MagickCore  6.9.12-58
Convert, Edit, Or Compose Bitmap Images
 All Data Structures
draw.c
1 /*
2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3 % %
4 % %
5 % %
6 % DDDD RRRR AAA W W %
7 % D D R R A A W W %
8 % D D RRRR AAAAA W W W %
9 % D D R RN A A WW WW %
10 % DDDD R R A A W W %
11 % %
12 % %
13 % MagickCore Image Drawing Methods %
14 % %
15 % %
16 % Software Design %
17 % Cristy %
18 % July 1998 %
19 % %
20 % %
21 % Copyright 1999-2021 ImageMagick Studio LLC, a non-profit organization %
22 % dedicated to making software imaging solutions freely available. %
23 % %
24 % You may not use this file except in compliance with the License. You may %
25 % obtain a copy of the License at %
26 % %
27 % https://imagemagick.org/script/license.php %
28 % %
29 % Unless required by applicable law or agreed to in writing, software %
30 % distributed under the License is distributed on an "AS IS" BASIS, %
31 % WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
32 % See the License for the specific language governing permissions and %
33 % limitations under the License. %
34 % %
35 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
36 %
37 % Bill Radcliffe of Corbis (www.corbis.com) contributed the polygon
38 % rendering code based on Paul Heckbert's "Concave Polygon Scan Conversion",
39 % Graphics Gems, 1990. Leonard Rosenthal and David Harr of Appligent
40 % (www.appligent.com) contributed the dash pattern, linecap stroking
41 % algorithm, and minor rendering improvements.
42 %
43 */
44 
45 /*
46  Include declarations.
47 */
48 #include "magick/studio.h"
49 #include "magick/annotate.h"
50 #include "magick/artifact.h"
51 #include "magick/blob.h"
52 #include "magick/cache.h"
53 #include "magick/cache-private.h"
54 #include "magick/cache-view.h"
55 #include "magick/channel.h"
56 #include "magick/color.h"
57 #include "magick/color-private.h"
58 #include "magick/colorspace.h"
59 #include "magick/colorspace-private.h"
60 #include "magick/composite.h"
61 #include "magick/composite-private.h"
62 #include "magick/constitute.h"
63 #include "magick/draw.h"
64 #include "magick/draw-private.h"
65 #include "magick/enhance.h"
66 #include "magick/exception.h"
67 #include "magick/exception-private.h"
68 #include "magick/gem.h"
69 #include "magick/geometry.h"
70 #include "magick/image-private.h"
71 #include "magick/list.h"
72 #include "magick/log.h"
73 #include "magick/memory-private.h"
74 #include "magick/monitor.h"
75 #include "magick/monitor-private.h"
76 #include "magick/option.h"
77 #include "magick/paint.h"
78 #include "magick/pixel-accessor.h"
79 #include "magick/pixel-private.h"
80 #include "magick/property.h"
81 #include "magick/resample.h"
82 #include "magick/resample-private.h"
83 #include "magick/resource_.h"
84 #include "magick/splay-tree.h"
85 #include "magick/string_.h"
86 #include "magick/string-private.h"
87 #include "magick/thread-private.h"
88 #include "magick/token.h"
89 #include "magick/transform.h"
90 #include "magick/utility.h"
91 
92 /*
93  Define declarations.
94 */
95 #define BezierQuantum 200
96 #define PrimitiveExtentPad 4296.0
97 #define MaxBezierCoordinates 67108864
98 #define ThrowPointExpectedException(image,token) \
99 { \
100  (void) ThrowMagickException(&(image)->exception,GetMagickModule(),DrawError, \
101  "NonconformingDrawingPrimitiveDefinition","`%s'",token); \
102  status=MagickFalse; \
103  break; \
104 }
105 
106 /*
107  Typedef declarations.
108 */
109 typedef struct _EdgeInfo
110 {
112  bounds;
113 
114  double
115  scanline;
116 
117  PointInfo
118  *points;
119 
120  size_t
121  number_points;
122 
123  ssize_t
124  direction;
125 
126  MagickBooleanType
127  ghostline;
128 
129  size_t
130  highwater;
131 } EdgeInfo;
132 
133 typedef struct _ElementInfo
134 {
135  double
136  cx,
137  cy,
138  major,
139  minor,
140  angle;
141 } ElementInfo;
142 
143 typedef struct _MVGInfo
144 {
146  **primitive_info;
147 
148  size_t
149  *extent;
150 
151  ssize_t
152  offset;
153 
154  PointInfo
155  point;
156 
158  *exception;
159 } MVGInfo;
160 
161 typedef struct _PolygonInfo
162 {
163  EdgeInfo
164  *edges;
165 
166  size_t
167  number_edges;
168 } PolygonInfo;
169 
170 typedef enum
171 {
172  MoveToCode,
173  OpenCode,
174  GhostlineCode,
175  LineToCode,
176  EndCode
177 } PathInfoCode;
178 
179 typedef struct _PathInfo
180 {
181  PointInfo
182  point;
183 
184  PathInfoCode
185  code;
186 } PathInfo;
187 
188 /*
189  Forward declarations.
190 */
191 static Image
192  *DrawClippingMask(Image *,const DrawInfo *,const char *,const char *,
193  ExceptionInfo *);
194 
195 static MagickBooleanType
196  DrawStrokePolygon(Image *,const DrawInfo *,const PrimitiveInfo *),
197  RenderMVGContent(Image *,const DrawInfo *,const size_t),
198  TraceArc(MVGInfo *,const PointInfo,const PointInfo,const PointInfo),
199  TraceArcPath(MVGInfo *,const PointInfo,const PointInfo,const PointInfo,
200  const double,const MagickBooleanType,const MagickBooleanType),
201  TraceBezier(MVGInfo *,const size_t),
202  TraceCircle(MVGInfo *,const PointInfo,const PointInfo),
203  TraceEllipse(MVGInfo *,const PointInfo,const PointInfo,const PointInfo),
204  TraceLine(PrimitiveInfo *,const PointInfo,const PointInfo),
205  TraceRectangle(PrimitiveInfo *,const PointInfo,const PointInfo),
206  TraceRoundRectangle(MVGInfo *,const PointInfo,const PointInfo,PointInfo),
207  TraceSquareLinecap(PrimitiveInfo *,const size_t,const double);
208 
209 static PrimitiveInfo
210  *TraceStrokePolygon(const DrawInfo *,const PrimitiveInfo *,ExceptionInfo *);
211 
212 static ssize_t
213  TracePath(Image *,MVGInfo *,const char *);
214 
215 /*
216 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
217 % %
218 % %
219 % %
220 % A c q u i r e D r a w I n f o %
221 % %
222 % %
223 % %
224 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
225 %
226 % AcquireDrawInfo() returns a DrawInfo structure properly initialized.
227 %
228 % The format of the AcquireDrawInfo method is:
229 %
230 % DrawInfo *AcquireDrawInfo(void)
231 %
232 */
233 MagickExport DrawInfo *AcquireDrawInfo(void)
234 {
235  DrawInfo
236  *draw_info;
237 
238  draw_info=(DrawInfo *) AcquireCriticalMemory(sizeof(*draw_info));
239  GetDrawInfo((ImageInfo *) NULL,draw_info);
240  return(draw_info);
241 }
242 
243 /*
244 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
245 % %
246 % %
247 % %
248 % C l o n e D r a w I n f o %
249 % %
250 % %
251 % %
252 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
253 %
254 % CloneDrawInfo() makes a copy of the given draw_info structure. If NULL
255 % is specified, a new DrawInfo structure is created initialized to default
256 % values.
257 %
258 % The format of the CloneDrawInfo method is:
259 %
260 % DrawInfo *CloneDrawInfo(const ImageInfo *image_info,
261 % const DrawInfo *draw_info)
262 %
263 % A description of each parameter follows:
264 %
265 % o image_info: the image info.
266 %
267 % o draw_info: the draw info.
268 %
269 */
270 MagickExport DrawInfo *CloneDrawInfo(const ImageInfo *image_info,
271  const DrawInfo *draw_info)
272 {
273  DrawInfo
274  *clone_info;
275 
276  clone_info=(DrawInfo *) AcquireCriticalMemory(sizeof(*clone_info));
277  GetDrawInfo(image_info,clone_info);
278  if (draw_info == (DrawInfo *) NULL)
279  return(clone_info);
280  if (draw_info->id != (char *) NULL)
281  (void) CloneString(&clone_info->id,draw_info->id);
282  if (draw_info->primitive != (char *) NULL)
283  (void) CloneString(&clone_info->primitive,draw_info->primitive);
284  if (draw_info->geometry != (char *) NULL)
285  (void) CloneString(&clone_info->geometry,draw_info->geometry);
286  clone_info->compliance=draw_info->compliance;
287  clone_info->viewbox=draw_info->viewbox;
288  clone_info->affine=draw_info->affine;
289  clone_info->gravity=draw_info->gravity;
290  clone_info->fill=draw_info->fill;
291  clone_info->stroke=draw_info->stroke;
292  clone_info->stroke_width=draw_info->stroke_width;
293  if (draw_info->fill_pattern != (Image *) NULL)
294  clone_info->fill_pattern=CloneImage(draw_info->fill_pattern,0,0,MagickTrue,
295  &draw_info->fill_pattern->exception);
296  else
297  if (draw_info->tile != (Image *) NULL)
298  clone_info->fill_pattern=CloneImage(draw_info->tile,0,0,MagickTrue,
299  &draw_info->tile->exception);
300  clone_info->tile=NewImageList(); /* tile is deprecated */
301  if (draw_info->stroke_pattern != (Image *) NULL)
302  clone_info->stroke_pattern=CloneImage(draw_info->stroke_pattern,0,0,
303  MagickTrue,&draw_info->stroke_pattern->exception);
304  clone_info->stroke_antialias=draw_info->stroke_antialias;
305  clone_info->text_antialias=draw_info->text_antialias;
306  clone_info->fill_rule=draw_info->fill_rule;
307  clone_info->linecap=draw_info->linecap;
308  clone_info->linejoin=draw_info->linejoin;
309  clone_info->miterlimit=draw_info->miterlimit;
310  clone_info->dash_offset=draw_info->dash_offset;
311  clone_info->decorate=draw_info->decorate;
312  clone_info->compose=draw_info->compose;
313  if (draw_info->text != (char *) NULL)
314  (void) CloneString(&clone_info->text,draw_info->text);
315  if (draw_info->font != (char *) NULL)
316  (void) CloneString(&clone_info->font,draw_info->font);
317  if (draw_info->metrics != (char *) NULL)
318  (void) CloneString(&clone_info->metrics,draw_info->metrics);
319  if (draw_info->family != (char *) NULL)
320  (void) CloneString(&clone_info->family,draw_info->family);
321  clone_info->style=draw_info->style;
322  clone_info->stretch=draw_info->stretch;
323  clone_info->weight=draw_info->weight;
324  if (draw_info->encoding != (char *) NULL)
325  (void) CloneString(&clone_info->encoding,draw_info->encoding);
326  clone_info->pointsize=draw_info->pointsize;
327  clone_info->kerning=draw_info->kerning;
328  clone_info->interline_spacing=draw_info->interline_spacing;
329  clone_info->interword_spacing=draw_info->interword_spacing;
330  clone_info->direction=draw_info->direction;
331  if (draw_info->density != (char *) NULL)
332  (void) CloneString(&clone_info->density,draw_info->density);
333  clone_info->align=draw_info->align;
334  clone_info->undercolor=draw_info->undercolor;
335  clone_info->border_color=draw_info->border_color;
336  if (draw_info->server_name != (char *) NULL)
337  (void) CloneString(&clone_info->server_name,draw_info->server_name);
338  if (draw_info->dash_pattern != (double *) NULL)
339  {
340  ssize_t
341  x;
342 
343  for (x=0; fabs(draw_info->dash_pattern[x]) >= MagickEpsilon; x++) ;
344  clone_info->dash_pattern=(double *) AcquireQuantumMemory((size_t) (2*x+2),
345  sizeof(*clone_info->dash_pattern));
346  if (clone_info->dash_pattern == (double *) NULL)
347  ThrowFatalException(ResourceLimitFatalError,
348  "UnableToAllocateDashPattern");
349  (void) memset(clone_info->dash_pattern,0,(size_t) (2*x+2)*
350  sizeof(*clone_info->dash_pattern));
351  (void) memcpy(clone_info->dash_pattern,draw_info->dash_pattern,(size_t)
352  (x+1)*sizeof(*clone_info->dash_pattern));
353  }
354  clone_info->gradient=draw_info->gradient;
355  if (draw_info->gradient.stops != (StopInfo *) NULL)
356  {
357  size_t
358  number_stops;
359 
360  number_stops=clone_info->gradient.number_stops;
361  clone_info->gradient.stops=(StopInfo *) AcquireQuantumMemory((size_t)
362  number_stops,sizeof(*clone_info->gradient.stops));
363  if (clone_info->gradient.stops == (StopInfo *) NULL)
364  ThrowFatalException(ResourceLimitFatalError,
365  "UnableToAllocateDashPattern");
366  (void) memcpy(clone_info->gradient.stops,draw_info->gradient.stops,
367  (size_t) number_stops*sizeof(*clone_info->gradient.stops));
368  }
369  clone_info->bounds=draw_info->bounds;
370  clone_info->fill_opacity=draw_info->fill_opacity;
371  clone_info->stroke_opacity=draw_info->stroke_opacity;
372  clone_info->element_reference=draw_info->element_reference;
373  clone_info->clip_path=draw_info->clip_path;
374  clone_info->clip_units=draw_info->clip_units;
375  if (draw_info->clip_mask != (char *) NULL)
376  (void) CloneString(&clone_info->clip_mask,draw_info->clip_mask);
377  if (draw_info->clipping_mask != (Image *) NULL)
378  clone_info->clipping_mask=CloneImage(draw_info->clipping_mask,0,0,
379  MagickTrue,&draw_info->clipping_mask->exception);
380  if (draw_info->composite_mask != (Image *) NULL)
381  clone_info->composite_mask=CloneImage(draw_info->composite_mask,0,0,
382  MagickTrue,&draw_info->composite_mask->exception);
383  clone_info->render=draw_info->render;
384  clone_info->debug=draw_info->debug;
385  return(clone_info);
386 }
387 
388 /*
389 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
390 % %
391 % %
392 % %
393 + C o n v e r t P a t h T o P o l y g o n %
394 % %
395 % %
396 % %
397 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
398 %
399 % ConvertPathToPolygon() converts a path to the more efficient sorted
400 % rendering form.
401 %
402 % The format of the ConvertPathToPolygon method is:
403 %
404 % PolygonInfo *ConvertPathToPolygon(const PathInfo *path_info,
405 % ExceptionInfo *exception)
406 %
407 % A description of each parameter follows:
408 %
409 % o ConvertPathToPolygon() returns the path in a more efficient sorted
410 % rendering form of type PolygonInfo.
411 %
412 % o draw_info: Specifies a pointer to an DrawInfo structure.
413 %
414 % o path_info: Specifies a pointer to an PathInfo structure.
415 %
416 % o exception: return any errors or warnings in this structure.
417 %
418 */
419 
420 static PolygonInfo *DestroyPolygonInfo(PolygonInfo *polygon_info)
421 {
422  ssize_t
423  i;
424 
425  if (polygon_info->edges != (EdgeInfo *) NULL)
426  {
427  for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
428  if (polygon_info->edges[i].points != (PointInfo *) NULL)
429  polygon_info->edges[i].points=(PointInfo *)
430  RelinquishMagickMemory(polygon_info->edges[i].points);
431  polygon_info->edges=(EdgeInfo *) RelinquishMagickMemory(
432  polygon_info->edges);
433  }
434  return((PolygonInfo *) RelinquishMagickMemory(polygon_info));
435 }
436 
437 #if defined(__cplusplus) || defined(c_plusplus)
438 extern "C" {
439 #endif
440 
441 static int DrawCompareEdges(const void *p_edge,const void *q_edge)
442 {
443 #define DrawCompareEdge(p,q) \
444 { \
445  if (((p)-(q)) < 0.0) \
446  return(-1); \
447  if (((p)-(q)) > 0.0) \
448  return(1); \
449 }
450 
451  const PointInfo
452  *p,
453  *q;
454 
455  /*
456  Edge sorting for right-handed coordinate system.
457  */
458  p=((const EdgeInfo *) p_edge)->points;
459  q=((const EdgeInfo *) q_edge)->points;
460  DrawCompareEdge(p[0].y,q[0].y);
461  DrawCompareEdge(p[0].x,q[0].x);
462  DrawCompareEdge((p[1].x-p[0].x)*(q[1].y-q[0].y),(p[1].y-p[0].y)*
463  (q[1].x-q[0].x));
464  DrawCompareEdge(p[1].y,q[1].y);
465  DrawCompareEdge(p[1].x,q[1].x);
466  return(0);
467 }
468 
469 #if defined(__cplusplus) || defined(c_plusplus)
470 }
471 #endif
472 
473 static void LogPolygonInfo(const PolygonInfo *polygon_info)
474 {
475  EdgeInfo
476  *p;
477 
478  ssize_t
479  i,
480  j;
481 
482  (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin active-edge");
483  p=polygon_info->edges;
484  for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
485  {
486  (void) LogMagickEvent(DrawEvent,GetMagickModule()," edge %.20g:",
487  (double) i);
488  (void) LogMagickEvent(DrawEvent,GetMagickModule()," direction: %s",
489  p->direction != MagickFalse ? "down" : "up");
490  (void) LogMagickEvent(DrawEvent,GetMagickModule()," ghostline: %s",
491  p->ghostline != MagickFalse ? "transparent" : "opaque");
492  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
493  " bounds: %g,%g - %g,%g",p->bounds.x1,p->bounds.y1,
494  p->bounds.x2,p->bounds.y2);
495  for (j=0; j < (ssize_t) p->number_points; j++)
496  (void) LogMagickEvent(DrawEvent,GetMagickModule()," %g,%g",
497  p->points[j].x,p->points[j].y);
498  p++;
499  }
500  (void) LogMagickEvent(DrawEvent,GetMagickModule()," end active-edge");
501 }
502 
503 static void ReversePoints(PointInfo *points,const size_t number_points)
504 {
505  PointInfo
506  point;
507 
508  ssize_t
509  i;
510 
511  for (i=0; i < (ssize_t) (number_points >> 1); i++)
512  {
513  point=points[i];
514  points[i]=points[number_points-(i+1)];
515  points[number_points-(i+1)]=point;
516  }
517 }
518 
519 static PolygonInfo *ConvertPathToPolygon(const PathInfo *path_info,
520  ExceptionInfo *exception)
521 {
522  long
523  direction,
524  next_direction;
525 
526  PointInfo
527  point,
528  *points;
529 
531  *polygon_info;
532 
534  bounds;
535 
536  ssize_t
537  i,
538  n;
539 
540  MagickBooleanType
541  ghostline;
542 
543  size_t
544  edge,
545  number_edges,
546  number_points;
547 
548  /*
549  Convert a path to the more efficient sorted rendering form.
550  */
551  polygon_info=(PolygonInfo *) AcquireMagickMemory(sizeof(*polygon_info));
552  if (polygon_info == (PolygonInfo *) NULL)
553  {
554  (void) ThrowMagickException(exception,GetMagickModule(),
555  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
556  return((PolygonInfo *) NULL);
557  }
558  number_edges=16;
559  polygon_info->edges=(EdgeInfo *) AcquireQuantumMemory(number_edges,
560  sizeof(*polygon_info->edges));
561  if (polygon_info->edges == (EdgeInfo *) NULL)
562  {
563  (void) ThrowMagickException(exception,GetMagickModule(),
564  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
565  return(DestroyPolygonInfo(polygon_info));
566  }
567  (void) memset(polygon_info->edges,0,number_edges*
568  sizeof(*polygon_info->edges));
569  direction=0;
570  edge=0;
571  ghostline=MagickFalse;
572  n=0;
573  number_points=0;
574  points=(PointInfo *) NULL;
575  (void) memset(&point,0,sizeof(point));
576  (void) memset(&bounds,0,sizeof(bounds));
577  polygon_info->edges[edge].number_points=(size_t) n;
578  polygon_info->edges[edge].scanline=0.0;
579  polygon_info->edges[edge].highwater=0;
580  polygon_info->edges[edge].ghostline=ghostline;
581  polygon_info->edges[edge].direction=(ssize_t) direction;
582  polygon_info->edges[edge].points=points;
583  polygon_info->edges[edge].bounds=bounds;
584  polygon_info->number_edges=0;
585  for (i=0; path_info[i].code != EndCode; i++)
586  {
587  if ((path_info[i].code == MoveToCode) || (path_info[i].code == OpenCode) ||
588  (path_info[i].code == GhostlineCode))
589  {
590  /*
591  Move to.
592  */
593  if ((points != (PointInfo *) NULL) && (n >= 2))
594  {
595  if (edge == number_edges)
596  {
597  number_edges<<=1;
598  polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(
599  polygon_info->edges,(size_t) number_edges,
600  sizeof(*polygon_info->edges));
601  if (polygon_info->edges == (EdgeInfo *) NULL)
602  {
603  (void) ThrowMagickException(exception,GetMagickModule(),
604  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
605  points=(PointInfo *) RelinquishMagickMemory(points);
606  return(DestroyPolygonInfo(polygon_info));
607  }
608  }
609  polygon_info->edges[edge].number_points=(size_t) n;
610  polygon_info->edges[edge].scanline=(-1.0);
611  polygon_info->edges[edge].highwater=0;
612  polygon_info->edges[edge].ghostline=ghostline;
613  polygon_info->edges[edge].direction=(ssize_t) (direction > 0);
614  if (direction < 0)
615  ReversePoints(points,(size_t) n);
616  polygon_info->edges[edge].points=points;
617  polygon_info->edges[edge].bounds=bounds;
618  polygon_info->edges[edge].bounds.y1=points[0].y;
619  polygon_info->edges[edge].bounds.y2=points[n-1].y;
620  points=(PointInfo *) NULL;
621  ghostline=MagickFalse;
622  edge++;
623  polygon_info->number_edges=edge;
624  }
625  if (points == (PointInfo *) NULL)
626  {
627  number_points=16;
628  points=(PointInfo *) AcquireQuantumMemory((size_t) number_points,
629  sizeof(*points));
630  if (points == (PointInfo *) NULL)
631  {
632  (void) ThrowMagickException(exception,GetMagickModule(),
633  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
634  return(DestroyPolygonInfo(polygon_info));
635  }
636  }
637  ghostline=path_info[i].code == GhostlineCode ? MagickTrue : MagickFalse;
638  point=path_info[i].point;
639  points[0]=point;
640  bounds.x1=point.x;
641  bounds.x2=point.x;
642  direction=0;
643  n=1;
644  continue;
645  }
646  /*
647  Line to.
648  */
649  next_direction=((path_info[i].point.y > point.y) ||
650  ((fabs(path_info[i].point.y-point.y) < MagickEpsilon) &&
651  (path_info[i].point.x > point.x))) ? 1 : -1;
652  if ((points != (PointInfo *) NULL) && (direction != 0) &&
653  (direction != next_direction))
654  {
655  /*
656  New edge.
657  */
658  point=points[n-1];
659  if (edge == number_edges)
660  {
661  number_edges<<=1;
662  polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(
663  polygon_info->edges,(size_t) number_edges,
664  sizeof(*polygon_info->edges));
665  if (polygon_info->edges == (EdgeInfo *) NULL)
666  {
667  (void) ThrowMagickException(exception,GetMagickModule(),
668  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
669  points=(PointInfo *) RelinquishMagickMemory(points);
670  return(DestroyPolygonInfo(polygon_info));
671  }
672  }
673  polygon_info->edges[edge].number_points=(size_t) n;
674  polygon_info->edges[edge].scanline=(-1.0);
675  polygon_info->edges[edge].highwater=0;
676  polygon_info->edges[edge].ghostline=ghostline;
677  polygon_info->edges[edge].direction=(ssize_t) (direction > 0);
678  if (direction < 0)
679  ReversePoints(points,(size_t) n);
680  polygon_info->edges[edge].points=points;
681  polygon_info->edges[edge].bounds=bounds;
682  polygon_info->edges[edge].bounds.y1=points[0].y;
683  polygon_info->edges[edge].bounds.y2=points[n-1].y;
684  polygon_info->number_edges=edge+1;
685  points=(PointInfo *) NULL;
686  number_points=16;
687  points=(PointInfo *) AcquireQuantumMemory((size_t) number_points,
688  sizeof(*points));
689  if (points == (PointInfo *) NULL)
690  {
691  (void) ThrowMagickException(exception,GetMagickModule(),
692  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
693  return(DestroyPolygonInfo(polygon_info));
694  }
695  n=1;
696  ghostline=MagickFalse;
697  points[0]=point;
698  bounds.x1=point.x;
699  bounds.x2=point.x;
700  edge++;
701  }
702  direction=next_direction;
703  if (points == (PointInfo *) NULL)
704  continue;
705  if (n == (ssize_t) number_points)
706  {
707  number_points<<=1;
708  points=(PointInfo *) ResizeQuantumMemory(points,(size_t) number_points,
709  sizeof(*points));
710  if (points == (PointInfo *) NULL)
711  {
712  (void) ThrowMagickException(exception,GetMagickModule(),
713  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
714  return(DestroyPolygonInfo(polygon_info));
715  }
716  }
717  point=path_info[i].point;
718  points[n]=point;
719  if (point.x < bounds.x1)
720  bounds.x1=point.x;
721  if (point.x > bounds.x2)
722  bounds.x2=point.x;
723  n++;
724  }
725  if (points != (PointInfo *) NULL)
726  {
727  if (n < 2)
728  points=(PointInfo *) RelinquishMagickMemory(points);
729  else
730  {
731  if (edge == number_edges)
732  {
733  number_edges<<=1;
734  polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(
735  polygon_info->edges,(size_t) number_edges,
736  sizeof(*polygon_info->edges));
737  if (polygon_info->edges == (EdgeInfo *) NULL)
738  {
739  (void) ThrowMagickException(exception,GetMagickModule(),
740  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
741  return(DestroyPolygonInfo(polygon_info));
742  }
743  }
744  polygon_info->edges[edge].number_points=(size_t) n;
745  polygon_info->edges[edge].scanline=(-1.0);
746  polygon_info->edges[edge].highwater=0;
747  polygon_info->edges[edge].ghostline=ghostline;
748  polygon_info->edges[edge].direction=(ssize_t) (direction > 0);
749  if (direction < 0)
750  ReversePoints(points,(size_t) n);
751  polygon_info->edges[edge].points=points;
752  polygon_info->edges[edge].bounds=bounds;
753  polygon_info->edges[edge].bounds.y1=points[0].y;
754  polygon_info->edges[edge].bounds.y2=points[n-1].y;
755  points=(PointInfo *) NULL;
756  ghostline=MagickFalse;
757  edge++;
758  polygon_info->number_edges=edge;
759  }
760  }
761  polygon_info->number_edges=edge;
762  polygon_info->number_edges=edge;
763  polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(polygon_info->edges,
764  polygon_info->number_edges,sizeof(*polygon_info->edges));
765  if (polygon_info->edges == (EdgeInfo *) NULL)
766  {
767  (void) ThrowMagickException(exception,GetMagickModule(),
768  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
769  return(DestroyPolygonInfo(polygon_info));
770  }
771  for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
772  {
773  EdgeInfo
774  *edge_info;
775 
776  edge_info=polygon_info->edges+i;
777  edge_info->points=(PointInfo *) ResizeQuantumMemory(edge_info->points,
778  edge_info->number_points,sizeof(*edge_info->points));
779  if (edge_info->points == (PointInfo *) NULL)
780  {
781  (void) ThrowMagickException(exception,GetMagickModule(),
782  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
783  return(DestroyPolygonInfo(polygon_info));
784  }
785  }
786  qsort(polygon_info->edges,(size_t) polygon_info->number_edges,
787  sizeof(*polygon_info->edges),DrawCompareEdges);
788  if ((GetLogEventMask() & DrawEvent) != 0)
789  LogPolygonInfo(polygon_info);
790  return(polygon_info);
791 }
792 
793 /*
794 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
795 % %
796 % %
797 % %
798 + C o n v e r t P r i m i t i v e T o P a t h %
799 % %
800 % %
801 % %
802 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
803 %
804 % ConvertPrimitiveToPath() converts a PrimitiveInfo structure into a vector
805 % path structure.
806 %
807 % The format of the ConvertPrimitiveToPath method is:
808 %
809 % PathInfo *ConvertPrimitiveToPath(const DrawInfo *draw_info,
810 % const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
811 %
812 % A description of each parameter follows:
813 %
814 % o ConvertPrimitiveToPath() returns a vector path structure of type
815 % PathInfo.
816 %
817 % o draw_info: a structure of type DrawInfo.
818 %
819 % o primitive_info: Specifies a pointer to an PrimitiveInfo structure.
820 %
821 %
822 */
823 
824 static void LogPathInfo(const PathInfo *path_info)
825 {
826  const PathInfo
827  *p;
828 
829  (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin vector-path");
830  for (p=path_info; p->code != EndCode; p++)
831  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
832  " %g,%g %s",p->point.x,p->point.y,p->code == GhostlineCode ?
833  "moveto ghostline" : p->code == OpenCode ? "moveto open" :
834  p->code == MoveToCode ? "moveto" : p->code == LineToCode ? "lineto" :
835  "?");
836  (void) LogMagickEvent(DrawEvent,GetMagickModule()," end vector-path");
837 }
838 
839 static PathInfo *ConvertPrimitiveToPath(
840  const DrawInfo *magick_unused(draw_info),const PrimitiveInfo *primitive_info,
841  ExceptionInfo *exception)
842 {
843  MagickBooleanType
844  closed_subpath;
845 
846  PathInfo
847  *path_info;
848 
849  PathInfoCode
850  code;
851 
852  PointInfo
853  p,
854  q;
855 
856  ssize_t
857  i,
858  n;
859 
860  ssize_t
861  coordinates,
862  start;
863 
864  magick_unreferenced(draw_info);
865 
866  /*
867  Converts a PrimitiveInfo structure into a vector path structure.
868  */
869  switch (primitive_info->primitive)
870  {
871  case PointPrimitive:
872  case ColorPrimitive:
873  case MattePrimitive:
874  case TextPrimitive:
875  case ImagePrimitive:
876  return((PathInfo *) NULL);
877  default:
878  break;
879  }
880  for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++) ;
881  path_info=(PathInfo *) AcquireQuantumMemory((size_t) (3UL*i+1UL),
882  sizeof(*path_info));
883  if (path_info == (PathInfo *) NULL)
884  {
885  (void) ThrowMagickException(exception,GetMagickModule(),
886  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
887  return((PathInfo *) NULL);
888  }
889  coordinates=0;
890  closed_subpath=MagickFalse;
891  n=0;
892  p.x=(-1.0);
893  p.y=(-1.0);
894  q.x=(-1.0);
895  q.y=(-1.0);
896  start=0;
897  for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
898  {
899  code=LineToCode;
900  if (coordinates <= 0)
901  {
902  /*
903  New subpath.
904  */
905  coordinates=(ssize_t) primitive_info[i].coordinates;
906  p=primitive_info[i].point;
907  start=n;
908  code=MoveToCode;
909  closed_subpath=primitive_info[i].closed_subpath;
910  }
911  coordinates--;
912  if ((code == MoveToCode) || (coordinates <= 0) ||
913  (fabs(q.x-primitive_info[i].point.x) >= MagickEpsilon) ||
914  (fabs(q.y-primitive_info[i].point.y) >= MagickEpsilon))
915  {
916  /*
917  Eliminate duplicate points.
918  */
919  path_info[n].code=code;
920  path_info[n].point=primitive_info[i].point;
921  q=primitive_info[i].point;
922  n++;
923  }
924  if (coordinates > 0)
925  continue; /* next point in current subpath */
926  if (closed_subpath != MagickFalse)
927  {
928  closed_subpath=MagickFalse;
929  continue;
930  }
931  /*
932  Mark the p point as open if the subpath is not closed.
933  */
934  path_info[start].code=OpenCode;
935  path_info[n].code=GhostlineCode;
936  path_info[n].point=primitive_info[i].point;
937  n++;
938  path_info[n].code=LineToCode;
939  path_info[n].point=p;
940  n++;
941  }
942  path_info[n].code=EndCode;
943  path_info[n].point.x=0.0;
944  path_info[n].point.y=0.0;
945  if (IsEventLogging() != MagickFalse)
946  LogPathInfo(path_info);
947  path_info=(PathInfo *) ResizeQuantumMemory(path_info,(size_t) (n+1),
948  sizeof(*path_info));
949  return(path_info);
950 }
951 
952 /*
953 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
954 % %
955 % %
956 % %
957 % D e s t r o y D r a w I n f o %
958 % %
959 % %
960 % %
961 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
962 %
963 % DestroyDrawInfo() deallocates memory associated with an DrawInfo structure.
964 %
965 % The format of the DestroyDrawInfo method is:
966 %
967 % DrawInfo *DestroyDrawInfo(DrawInfo *draw_info)
968 %
969 % A description of each parameter follows:
970 %
971 % o draw_info: the draw info.
972 %
973 */
974 MagickExport DrawInfo *DestroyDrawInfo(DrawInfo *draw_info)
975 {
976  assert(draw_info != (DrawInfo *) NULL);
977  assert(draw_info->signature == MagickCoreSignature);
978  if (IsEventLogging() != MagickFalse)
979  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
980  if (draw_info->id != (char *) NULL)
981  draw_info->id=DestroyString(draw_info->id);
982  if (draw_info->primitive != (char *) NULL)
983  draw_info->primitive=DestroyString(draw_info->primitive);
984  if (draw_info->text != (char *) NULL)
985  draw_info->text=DestroyString(draw_info->text);
986  if (draw_info->geometry != (char *) NULL)
987  draw_info->geometry=DestroyString(draw_info->geometry);
988  if (draw_info->tile != (Image *) NULL)
989  draw_info->tile=DestroyImage(draw_info->tile);
990  if (draw_info->fill_pattern != (Image *) NULL)
991  draw_info->fill_pattern=DestroyImage(draw_info->fill_pattern);
992  if (draw_info->stroke_pattern != (Image *) NULL)
993  draw_info->stroke_pattern=DestroyImage(draw_info->stroke_pattern);
994  if (draw_info->font != (char *) NULL)
995  draw_info->font=DestroyString(draw_info->font);
996  if (draw_info->metrics != (char *) NULL)
997  draw_info->metrics=DestroyString(draw_info->metrics);
998  if (draw_info->family != (char *) NULL)
999  draw_info->family=DestroyString(draw_info->family);
1000  if (draw_info->encoding != (char *) NULL)
1001  draw_info->encoding=DestroyString(draw_info->encoding);
1002  if (draw_info->density != (char *) NULL)
1003  draw_info->density=DestroyString(draw_info->density);
1004  if (draw_info->server_name != (char *) NULL)
1005  draw_info->server_name=(char *)
1006  RelinquishMagickMemory(draw_info->server_name);
1007  if (draw_info->dash_pattern != (double *) NULL)
1008  draw_info->dash_pattern=(double *) RelinquishMagickMemory(
1009  draw_info->dash_pattern);
1010  if (draw_info->gradient.stops != (StopInfo *) NULL)
1011  draw_info->gradient.stops=(StopInfo *) RelinquishMagickMemory(
1012  draw_info->gradient.stops);
1013  if (draw_info->clip_mask != (char *) NULL)
1014  draw_info->clip_mask=DestroyString(draw_info->clip_mask);
1015  if (draw_info->clipping_mask != (Image *) NULL)
1016  draw_info->clipping_mask=DestroyImage(draw_info->clipping_mask);
1017  if (draw_info->composite_mask != (Image *) NULL)
1018  draw_info->composite_mask=DestroyImage(draw_info->composite_mask);
1019  draw_info->signature=(~MagickCoreSignature);
1020  draw_info=(DrawInfo *) RelinquishMagickMemory(draw_info);
1021  return(draw_info);
1022 }
1023 
1024 /*
1025 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1026 % %
1027 % %
1028 % %
1029 % D r a w A f f i n e I m a g e %
1030 % %
1031 % %
1032 % %
1033 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1034 %
1035 % DrawAffineImage() composites the source over the destination image as
1036 % dictated by the affine transform.
1037 %
1038 % The format of the DrawAffineImage method is:
1039 %
1040 % MagickBooleanType DrawAffineImage(Image *image,const Image *source,
1041 % const AffineMatrix *affine)
1042 %
1043 % A description of each parameter follows:
1044 %
1045 % o image: the image.
1046 %
1047 % o source: the source image.
1048 %
1049 % o affine: the affine transform.
1050 %
1051 */
1052 
1053 static SegmentInfo AffineEdge(const Image *image,const AffineMatrix *affine,
1054  const double y,const SegmentInfo *edge)
1055 {
1056  double
1057  intercept,
1058  z;
1059 
1060  double
1061  x;
1062 
1063  SegmentInfo
1064  inverse_edge;
1065 
1066  /*
1067  Determine left and right edges.
1068  */
1069  inverse_edge.x1=edge->x1;
1070  inverse_edge.y1=edge->y1;
1071  inverse_edge.x2=edge->x2;
1072  inverse_edge.y2=edge->y2;
1073  z=affine->ry*y+affine->tx;
1074  if (affine->sx >= MagickEpsilon)
1075  {
1076  intercept=(-z/affine->sx);
1077  x=intercept;
1078  if (x > inverse_edge.x1)
1079  inverse_edge.x1=x;
1080  intercept=(-z+(double) image->columns)/affine->sx;
1081  x=intercept;
1082  if (x < inverse_edge.x2)
1083  inverse_edge.x2=x;
1084  }
1085  else
1086  if (affine->sx < -MagickEpsilon)
1087  {
1088  intercept=(-z+(double) image->columns)/affine->sx;
1089  x=intercept;
1090  if (x > inverse_edge.x1)
1091  inverse_edge.x1=x;
1092  intercept=(-z/affine->sx);
1093  x=intercept;
1094  if (x < inverse_edge.x2)
1095  inverse_edge.x2=x;
1096  }
1097  else
1098  if ((z < 0.0) || ((size_t) floor(z+0.5) >= image->columns))
1099  {
1100  inverse_edge.x2=edge->x1;
1101  return(inverse_edge);
1102  }
1103  /*
1104  Determine top and bottom edges.
1105  */
1106  z=affine->sy*y+affine->ty;
1107  if (affine->rx >= MagickEpsilon)
1108  {
1109  intercept=(-z/affine->rx);
1110  x=intercept;
1111  if (x > inverse_edge.x1)
1112  inverse_edge.x1=x;
1113  intercept=(-z+(double) image->rows)/affine->rx;
1114  x=intercept;
1115  if (x < inverse_edge.x2)
1116  inverse_edge.x2=x;
1117  }
1118  else
1119  if (affine->rx < -MagickEpsilon)
1120  {
1121  intercept=(-z+(double) image->rows)/affine->rx;
1122  x=intercept;
1123  if (x > inverse_edge.x1)
1124  inverse_edge.x1=x;
1125  intercept=(-z/affine->rx);
1126  x=intercept;
1127  if (x < inverse_edge.x2)
1128  inverse_edge.x2=x;
1129  }
1130  else
1131  if ((z < 0.0) || ((size_t) floor(z+0.5) >= image->rows))
1132  {
1133  inverse_edge.x2=edge->x2;
1134  return(inverse_edge);
1135  }
1136  return(inverse_edge);
1137 }
1138 
1139 static AffineMatrix InverseAffineMatrix(const AffineMatrix *affine)
1140 {
1141  AffineMatrix
1142  inverse_affine;
1143 
1144  double
1145  determinant;
1146 
1147  determinant=PerceptibleReciprocal(affine->sx*affine->sy-affine->rx*
1148  affine->ry);
1149  inverse_affine.sx=determinant*affine->sy;
1150  inverse_affine.rx=determinant*(-affine->rx);
1151  inverse_affine.ry=determinant*(-affine->ry);
1152  inverse_affine.sy=determinant*affine->sx;
1153  inverse_affine.tx=(-affine->tx)*inverse_affine.sx-affine->ty*
1154  inverse_affine.ry;
1155  inverse_affine.ty=(-affine->tx)*inverse_affine.rx-affine->ty*
1156  inverse_affine.sy;
1157  return(inverse_affine);
1158 }
1159 
1160 MagickExport MagickBooleanType DrawAffineImage(Image *image,
1161  const Image *source,const AffineMatrix *affine)
1162 {
1163  AffineMatrix
1164  inverse_affine;
1165 
1166  CacheView
1167  *image_view,
1168  *source_view;
1169 
1171  *exception;
1172 
1173  MagickBooleanType
1174  status;
1175 
1177  zero;
1178 
1179  PointInfo
1180  extent[4],
1181  min,
1182  max,
1183  point;
1184 
1185  ssize_t
1186  i;
1187 
1188  SegmentInfo
1189  edge;
1190 
1191  ssize_t
1192  start,
1193  stop,
1194  y;
1195 
1196  /*
1197  Determine bounding box.
1198  */
1199  assert(image != (Image *) NULL);
1200  assert(image->signature == MagickCoreSignature);
1201  assert(source != (const Image *) NULL);
1202  assert(source->signature == MagickCoreSignature);
1203  if (IsEventLogging() != MagickFalse)
1204  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1205  assert(affine != (AffineMatrix *) NULL);
1206  extent[0].x=0.0;
1207  extent[0].y=0.0;
1208  extent[1].x=(double) source->columns-1.0;
1209  extent[1].y=0.0;
1210  extent[2].x=(double) source->columns-1.0;
1211  extent[2].y=(double) source->rows-1.0;
1212  extent[3].x=0.0;
1213  extent[3].y=(double) source->rows-1.0;
1214  for (i=0; i < 4; i++)
1215  {
1216  point=extent[i];
1217  extent[i].x=point.x*affine->sx+point.y*affine->ry+affine->tx;
1218  extent[i].y=point.x*affine->rx+point.y*affine->sy+affine->ty;
1219  }
1220  min=extent[0];
1221  max=extent[0];
1222  for (i=1; i < 4; i++)
1223  {
1224  if (min.x > extent[i].x)
1225  min.x=extent[i].x;
1226  if (min.y > extent[i].y)
1227  min.y=extent[i].y;
1228  if (max.x < extent[i].x)
1229  max.x=extent[i].x;
1230  if (max.y < extent[i].y)
1231  max.y=extent[i].y;
1232  }
1233  /*
1234  Affine transform image.
1235  */
1236  if (SetImageStorageClass(image,DirectClass) == MagickFalse)
1237  return(MagickFalse);
1238  status=MagickTrue;
1239  edge.x1=MagickMax(min.x,0.0);
1240  edge.y1=MagickMax(min.y,0.0);
1241  edge.x2=MagickMin(max.x,(double) image->columns-1.0);
1242  edge.y2=MagickMin(max.y,(double) image->rows-1.0);
1243  inverse_affine=InverseAffineMatrix(affine);
1244  GetMagickPixelPacket(image,&zero);
1245  exception=(&image->exception);
1246  start=CastDoubleToLong(ceil(edge.y1-0.5));
1247  stop=CastDoubleToLong(floor(edge.y2+0.5));
1248  source_view=AcquireVirtualCacheView(source,exception);
1249  image_view=AcquireAuthenticCacheView(image,exception);
1250 #if defined(MAGICKCORE_OPENMP_SUPPORT)
1251  #pragma omp parallel for schedule(static) shared(status) \
1252  magick_number_threads(source,image,stop-start,1)
1253 #endif
1254  for (y=start; y <= stop; y++)
1255  {
1257  composite,
1258  pixel;
1259 
1260  PointInfo
1261  point;
1262 
1263  IndexPacket
1264  *magick_restrict indexes;
1265 
1266  ssize_t
1267  x;
1268 
1269  PixelPacket
1270  *magick_restrict q;
1271 
1272  SegmentInfo
1273  inverse_edge;
1274 
1275  ssize_t
1276  x_offset;
1277 
1278  if (status == MagickFalse)
1279  continue;
1280  inverse_edge=AffineEdge(source,&inverse_affine,(double) y,&edge);
1281  if (inverse_edge.x2 < inverse_edge.x1)
1282  continue;
1283  q=GetCacheViewAuthenticPixels(image_view,CastDoubleToLong(
1284  ceil(inverse_edge.x1-0.5)),y,(size_t) CastDoubleToLong(floor(
1285  inverse_edge.x2+0.5)-ceil(inverse_edge.x1-0.5)+1),1,exception);
1286  if (q == (PixelPacket *) NULL)
1287  continue;
1288  indexes=GetCacheViewAuthenticIndexQueue(image_view);
1289  pixel=zero;
1290  composite=zero;
1291  x_offset=0;
1292  for (x=CastDoubleToLong(ceil(inverse_edge.x1-0.5));
1293  x <= CastDoubleToLong(floor(inverse_edge.x2+0.5)); x++)
1294  {
1295  point.x=(double) x*inverse_affine.sx+y*inverse_affine.ry+
1296  inverse_affine.tx;
1297  point.y=(double) x*inverse_affine.rx+y*inverse_affine.sy+
1298  inverse_affine.ty;
1299  status=InterpolateMagickPixelPacket(source,source_view,
1300  UndefinedInterpolatePixel,point.x,point.y,&pixel,exception);
1301  if (status == MagickFalse)
1302  break;
1303  SetMagickPixelPacket(image,q,indexes+x_offset,&composite);
1304  MagickPixelCompositeOver(&pixel,pixel.opacity,&composite,
1305  composite.opacity,&composite);
1306  SetPixelPacket(image,&composite,q,indexes+x_offset);
1307  x_offset++;
1308  q++;
1309  }
1310  if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
1311  status=MagickFalse;
1312  }
1313  source_view=DestroyCacheView(source_view);
1314  image_view=DestroyCacheView(image_view);
1315  return(status);
1316 }
1317 
1318 /*
1319 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1320 % %
1321 % %
1322 % %
1323 + D r a w B o u n d i n g R e c t a n g l e s %
1324 % %
1325 % %
1326 % %
1327 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1328 %
1329 % DrawBoundingRectangles() draws the bounding rectangles on the image. This
1330 % is only useful for developers debugging the rendering algorithm.
1331 %
1332 % The format of the DrawBoundingRectangles method is:
1333 %
1334 % MagickBooleanType DrawBoundingRectangles(Image *image,
1335 % const DrawInfo *draw_info,PolygonInfo *polygon_info)
1336 %
1337 % A description of each parameter follows:
1338 %
1339 % o image: the image.
1340 %
1341 % o draw_info: the draw info.
1342 %
1343 % o polygon_info: Specifies a pointer to a PolygonInfo structure.
1344 %
1345 */
1346 
1347 static MagickBooleanType DrawBoundingRectangles(Image *image,
1348  const DrawInfo *draw_info,const PolygonInfo *polygon_info)
1349 {
1350  double
1351  mid;
1352 
1353  DrawInfo
1354  *clone_info;
1355 
1356  MagickStatusType
1357  status;
1358 
1359  PointInfo
1360  end,
1361  resolution,
1362  start;
1363 
1365  primitive_info[6];
1366 
1367  ssize_t
1368  i;
1369 
1370  SegmentInfo
1371  bounds;
1372 
1373  ssize_t
1374  coordinates;
1375 
1376  (void) memset(primitive_info,0,sizeof(primitive_info));
1377  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1378  status=QueryColorDatabase("#0000",&clone_info->fill,&image->exception);
1379  if (status == MagickFalse)
1380  {
1381  clone_info=DestroyDrawInfo(clone_info);
1382  return(MagickFalse);
1383  }
1384  resolution.x=96.0;
1385  resolution.y=96.0;
1386  if (clone_info->density != (char *) NULL)
1387  {
1388  GeometryInfo
1389  geometry_info;
1390 
1391  MagickStatusType
1392  flags;
1393 
1394  flags=ParseGeometry(clone_info->density,&geometry_info);
1395  if ((flags & RhoValue) != 0)
1396  resolution.x=geometry_info.rho;
1397  resolution.y=resolution.x;
1398  if ((flags & SigmaValue) != 0)
1399  resolution.y=geometry_info.sigma;
1400  }
1401  mid=(resolution.x/96.0)*ExpandAffine(&clone_info->affine)*
1402  clone_info->stroke_width/2.0;
1403  bounds.x1=0.0;
1404  bounds.y1=0.0;
1405  bounds.x2=0.0;
1406  bounds.y2=0.0;
1407  if (polygon_info != (PolygonInfo *) NULL)
1408  {
1409  bounds=polygon_info->edges[0].bounds;
1410  for (i=1; i < (ssize_t) polygon_info->number_edges; i++)
1411  {
1412  if (polygon_info->edges[i].bounds.x1 < (double) bounds.x1)
1413  bounds.x1=polygon_info->edges[i].bounds.x1;
1414  if (polygon_info->edges[i].bounds.y1 < (double) bounds.y1)
1415  bounds.y1=polygon_info->edges[i].bounds.y1;
1416  if (polygon_info->edges[i].bounds.x2 > (double) bounds.x2)
1417  bounds.x2=polygon_info->edges[i].bounds.x2;
1418  if (polygon_info->edges[i].bounds.y2 > (double) bounds.y2)
1419  bounds.y2=polygon_info->edges[i].bounds.y2;
1420  }
1421  bounds.x1-=mid;
1422  bounds.x1=bounds.x1 < 0.0 ? 0.0 : bounds.x1 >= (double)
1423  image->columns ? (double) image->columns-1 : bounds.x1;
1424  bounds.y1-=mid;
1425  bounds.y1=bounds.y1 < 0.0 ? 0.0 : bounds.y1 >= (double)
1426  image->rows ? (double) image->rows-1 : bounds.y1;
1427  bounds.x2+=mid;
1428  bounds.x2=bounds.x2 < 0.0 ? 0.0 : bounds.x2 >= (double)
1429  image->columns ? (double) image->columns-1 : bounds.x2;
1430  bounds.y2+=mid;
1431  bounds.y2=bounds.y2 < 0.0 ? 0.0 : bounds.y2 >= (double)
1432  image->rows ? (double) image->rows-1 : bounds.y2;
1433  for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
1434  {
1435  if (polygon_info->edges[i].direction != 0)
1436  status=QueryColorDatabase("#f00",&clone_info->stroke,
1437  &image->exception);
1438  else
1439  status=QueryColorDatabase("#0f0",&clone_info->stroke,
1440  &image->exception);
1441  if (status == MagickFalse)
1442  break;
1443  start.x=(double) (polygon_info->edges[i].bounds.x1-mid);
1444  start.y=(double) (polygon_info->edges[i].bounds.y1-mid);
1445  end.x=(double) (polygon_info->edges[i].bounds.x2+mid);
1446  end.y=(double) (polygon_info->edges[i].bounds.y2+mid);
1447  primitive_info[0].primitive=RectanglePrimitive;
1448  status&=TraceRectangle(primitive_info,start,end);
1449  primitive_info[0].method=ReplaceMethod;
1450  coordinates=(ssize_t) primitive_info[0].coordinates;
1451  primitive_info[coordinates].primitive=UndefinedPrimitive;
1452  status=DrawPrimitive(image,clone_info,primitive_info);
1453  if (status == MagickFalse)
1454  break;
1455  }
1456  if (i < (ssize_t) polygon_info->number_edges)
1457  {
1458  clone_info=DestroyDrawInfo(clone_info);
1459  return(status == 0 ? MagickFalse : MagickTrue);
1460  }
1461  }
1462  status=QueryColorDatabase("#00f",&clone_info->stroke,&image->exception);
1463  if (status == MagickFalse)
1464  {
1465  clone_info=DestroyDrawInfo(clone_info);
1466  return(MagickFalse);
1467  }
1468  start.x=(double) (bounds.x1-mid);
1469  start.y=(double) (bounds.y1-mid);
1470  end.x=(double) (bounds.x2+mid);
1471  end.y=(double) (bounds.y2+mid);
1472  primitive_info[0].primitive=RectanglePrimitive;
1473  status&=TraceRectangle(primitive_info,start,end);
1474  primitive_info[0].method=ReplaceMethod;
1475  coordinates=(ssize_t) primitive_info[0].coordinates;
1476  primitive_info[coordinates].primitive=UndefinedPrimitive;
1477  status=DrawPrimitive(image,clone_info,primitive_info);
1478  clone_info=DestroyDrawInfo(clone_info);
1479  return(status == 0 ? MagickFalse : MagickTrue);
1480 }
1481 
1482 /*
1483 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1484 % %
1485 % %
1486 % %
1487 % D r a w C l i p P a t h %
1488 % %
1489 % %
1490 % %
1491 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1492 %
1493 % DrawClipPath() draws the clip path on the image mask.
1494 %
1495 % The format of the DrawClipPath method is:
1496 %
1497 % MagickBooleanType DrawClipPath(Image *image,const DrawInfo *draw_info,
1498 % const char *id)
1499 %
1500 % A description of each parameter follows:
1501 %
1502 % o image: the image.
1503 %
1504 % o draw_info: the draw info.
1505 %
1506 % o id: the clip path id.
1507 %
1508 */
1509 MagickExport MagickBooleanType DrawClipPath(Image *image,
1510  const DrawInfo *draw_info,const char *id)
1511 {
1512  const char
1513  *clip_path;
1514 
1515  Image
1516  *clipping_mask;
1517 
1518  MagickBooleanType
1519  status;
1520 
1521  clip_path=GetImageArtifact(image,id);
1522  if (clip_path == (const char *) NULL)
1523  return(MagickFalse);
1524  clipping_mask=DrawClippingMask(image,draw_info,draw_info->clip_mask,clip_path,
1525  &image->exception);
1526  if (clipping_mask == (Image *) NULL)
1527  return(MagickFalse);
1528  status=SetImageClipMask(image,clipping_mask);
1529  clipping_mask=DestroyImage(clipping_mask);
1530  return(status);
1531 }
1532 
1533 /*
1534 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1535 % %
1536 % %
1537 % %
1538 % D r a w C l i p p i n g M a s k %
1539 % %
1540 % %
1541 % %
1542 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1543 %
1544 % DrawClippingMask() draws the clip path and returns it as an image clipping
1545 % mask.
1546 %
1547 % The format of the DrawClippingMask method is:
1548 %
1549 % Image *DrawClippingMask(Image *image,const DrawInfo *draw_info,
1550 % const char *id,const char *clip_path,ExceptionInfo *exception)
1551 %
1552 % A description of each parameter follows:
1553 %
1554 % o image: the image.
1555 %
1556 % o draw_info: the draw info.
1557 %
1558 % o id: the clip path id.
1559 %
1560 % o clip_path: the clip path.
1561 %
1562 % o exception: return any errors or warnings in this structure.
1563 %
1564 */
1565 static Image *DrawClippingMask(Image *image,const DrawInfo *draw_info,
1566  const char *id,const char *clip_path,ExceptionInfo *exception)
1567 {
1568  DrawInfo
1569  *clone_info;
1570 
1571  Image
1572  *clip_mask;
1573 
1574  MagickStatusType
1575  status;
1576 
1577  /*
1578  Draw a clip path.
1579  */
1580  assert(image != (Image *) NULL);
1581  assert(image->signature == MagickCoreSignature);
1582  assert(draw_info != (const DrawInfo *) NULL);
1583  if (IsEventLogging() != MagickFalse)
1584  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1585  clip_mask=AcquireImage((const ImageInfo *) NULL);
1586  status=SetImageExtent(clip_mask,image->columns,image->rows);
1587  if (status == MagickFalse)
1588  return(DestroyImage(clip_mask));
1589  status=SetImageClipMask(image,(Image *) NULL);
1590  status=QueryColorCompliance("#0000",AllCompliance,
1591  &clip_mask->background_color,exception);
1592  clip_mask->background_color.opacity=(Quantum) TransparentOpacity;
1593  status=SetImageBackgroundColor(clip_mask);
1594  if (draw_info->debug != MagickFalse)
1595  (void) LogMagickEvent(DrawEvent,GetMagickModule(),"\nbegin clip-path %s",
1596  id);
1597  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1598  (void) CloneString(&clone_info->primitive,clip_path);
1599  status=QueryColorCompliance("#ffffff",AllCompliance,&clone_info->fill,
1600  exception);
1601  if (clone_info->clip_mask != (char *) NULL)
1602  clone_info->clip_mask=DestroyString(clone_info->clip_mask);
1603  (void) QueryColorCompliance("#00000000",AllCompliance,&clone_info->stroke,
1604  exception);
1605  clone_info->stroke_width=0.0;
1606  clone_info->opacity=OpaqueOpacity;
1607  clone_info->clip_path=MagickTrue;
1608  status=RenderMVGContent(clip_mask,clone_info,0);
1609  clone_info=DestroyDrawInfo(clone_info);
1610  status&=SeparateImageChannel(clip_mask,TrueAlphaChannel);
1611  if (draw_info->compliance != SVGCompliance)
1612  status&=NegateImage(clip_mask,MagickFalse);
1613  if (status == MagickFalse)
1614  clip_mask=DestroyImage(clip_mask);
1615  if (draw_info->debug != MagickFalse)
1616  (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end clip-path");
1617  return(clip_mask);
1618 }
1619 
1620 /*
1621 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1622 % %
1623 % %
1624 % %
1625 % D r a w C o m p o s i t e M a s k %
1626 % %
1627 % %
1628 % %
1629 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1630 %
1631 % DrawCompositeMask() draws the mask path and returns it as an image mask.
1632 %
1633 % The format of the DrawCompositeMask method is:
1634 %
1635 % Image *DrawCompositeMask(Image *image,const DrawInfo *draw_info,
1636 % const char *id,const char *mask_path,ExceptionInfo *exception)
1637 %
1638 % A description of each parameter follows:
1639 %
1640 % o image: the image.
1641 %
1642 % o draw_info: the draw info.
1643 %
1644 % o id: the mask path id.
1645 %
1646 % o mask_path: the mask path.
1647 %
1648 % o exception: return any errors or warnings in this structure.
1649 %
1650 */
1651 static Image *DrawCompositeMask(Image *image,const DrawInfo *draw_info,
1652  const char *id,const char *mask_path,ExceptionInfo *exception)
1653 {
1654  Image
1655  *composite_mask;
1656 
1657  DrawInfo
1658  *clone_info;
1659 
1660  MagickStatusType
1661  status;
1662 
1663  /*
1664  Draw a mask path.
1665  */
1666  assert(image != (Image *) NULL);
1667  assert(image->signature == MagickCoreSignature);
1668  assert(draw_info != (const DrawInfo *) NULL);
1669  if (IsEventLogging() != MagickFalse)
1670  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1671  composite_mask=AcquireImage((const ImageInfo *) NULL);
1672  status=SetImageExtent(composite_mask,image->columns,image->rows);
1673  if (status == MagickFalse)
1674  return(DestroyImage(composite_mask));
1675  status=SetImageMask(image,(Image *) NULL);
1676  status=QueryColorCompliance("#0000",AllCompliance,
1677  &composite_mask->background_color,exception);
1678  composite_mask->background_color.opacity=(Quantum) TransparentOpacity;
1679  (void) SetImageBackgroundColor(composite_mask);
1680  if (draw_info->debug != MagickFalse)
1681  (void) LogMagickEvent(DrawEvent,GetMagickModule(),"\nbegin mask-path %s",
1682  id);
1683  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1684  (void) CloneString(&clone_info->primitive,mask_path);
1685  status=QueryColorCompliance("#ffffff",AllCompliance,&clone_info->fill,
1686  exception);
1687  status=QueryColorCompliance("#00000000",AllCompliance,&clone_info->stroke,
1688  exception);
1689  clone_info->stroke_width=0.0;
1690  clone_info->opacity=OpaqueOpacity;
1691  status=RenderMVGContent(composite_mask,clone_info,0);
1692  clone_info=DestroyDrawInfo(clone_info);
1693  status&=SeparateImageChannel(composite_mask,TrueAlphaChannel);
1694  status&=NegateImage(composite_mask,MagickFalse);
1695  if (status == MagickFalse)
1696  composite_mask=DestroyImage(composite_mask);
1697  if (draw_info->debug != MagickFalse)
1698  (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end mask-path");
1699  return(composite_mask);
1700 }
1701 
1702 /*
1703 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1704 % %
1705 % %
1706 % %
1707 + D r a w D a s h P o l y g o n %
1708 % %
1709 % %
1710 % %
1711 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1712 %
1713 % DrawDashPolygon() draws a dashed polygon (line, rectangle, ellipse) on the
1714 % image while respecting the dash offset and dash pattern attributes.
1715 %
1716 % The format of the DrawDashPolygon method is:
1717 %
1718 % MagickBooleanType DrawDashPolygon(const DrawInfo *draw_info,
1719 % const PrimitiveInfo *primitive_info,Image *image)
1720 %
1721 % A description of each parameter follows:
1722 %
1723 % o draw_info: the draw info.
1724 %
1725 % o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
1726 %
1727 % o image: the image.
1728 %
1729 %
1730 */
1731 static MagickBooleanType DrawDashPolygon(const DrawInfo *draw_info,
1732  const PrimitiveInfo *primitive_info,Image *image)
1733 {
1734  double
1735  dx,
1736  dy,
1737  length,
1738  maximum_length,
1739  offset,
1740  scale,
1741  total_length;
1742 
1743  DrawInfo
1744  *clone_info;
1745 
1746  MagickStatusType
1747  status;
1748 
1750  *dash_polygon;
1751 
1752  ssize_t
1753  i;
1754 
1755  size_t
1756  number_vertices;
1757 
1758  ssize_t
1759  j,
1760  n;
1761 
1762  assert(draw_info != (const DrawInfo *) NULL);
1763  if (draw_info->debug != MagickFalse)
1764  (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin draw-dash");
1765  for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++) ;
1766  number_vertices=(size_t) i;
1767  dash_polygon=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
1768  (2UL*number_vertices+32UL),sizeof(*dash_polygon));
1769  if (dash_polygon == (PrimitiveInfo *) NULL)
1770  {
1771  (void) ThrowMagickException(&image->exception,GetMagickModule(),
1772  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
1773  return(MagickFalse);
1774  }
1775  (void) memset(dash_polygon,0,(2UL*number_vertices+32UL)*
1776  sizeof(*dash_polygon));
1777  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1778  clone_info->miterlimit=0;
1779  dash_polygon[0]=primitive_info[0];
1780  scale=ExpandAffine(&draw_info->affine);
1781  length=scale*draw_info->dash_pattern[0];
1782  offset=fabs(draw_info->dash_offset) >= MagickEpsilon ?
1783  scale*draw_info->dash_offset : 0.0;
1784  j=1;
1785  for (n=0; offset > 0.0; j=0)
1786  {
1787  if (draw_info->dash_pattern[n] <= 0.0)
1788  break;
1789  length=scale*(draw_info->dash_pattern[n]+(n == 0 ? -0.5 : 0.5));
1790  if (offset > length)
1791  {
1792  offset-=length;
1793  n++;
1794  length=scale*draw_info->dash_pattern[n];
1795  continue;
1796  }
1797  if (offset < length)
1798  {
1799  length-=offset;
1800  offset=0.0;
1801  break;
1802  }
1803  offset=0.0;
1804  n++;
1805  }
1806  status=MagickTrue;
1807  maximum_length=0.0;
1808  total_length=0.0;
1809  for (i=1; (i < (ssize_t) number_vertices) && (length >= 0.0); i++)
1810  {
1811  dx=primitive_info[i].point.x-primitive_info[i-1].point.x;
1812  dy=primitive_info[i].point.y-primitive_info[i-1].point.y;
1813  maximum_length=hypot(dx,dy);
1814  if (maximum_length > (double) (MaxBezierCoordinates >> 2))
1815  continue;
1816  if (fabs(length) < MagickEpsilon)
1817  {
1818  if (fabs(draw_info->dash_pattern[n]) >= MagickEpsilon)
1819  n++;
1820  if (fabs(draw_info->dash_pattern[n]) < MagickEpsilon)
1821  n=0;
1822  length=scale*draw_info->dash_pattern[n];
1823  }
1824  for (total_length=0.0; (length >= 0.0) && (maximum_length >= (total_length+length)); )
1825  {
1826  total_length+=length;
1827  if ((n & 0x01) != 0)
1828  {
1829  dash_polygon[0]=primitive_info[0];
1830  dash_polygon[0].point.x=(double) (primitive_info[i-1].point.x+dx*
1831  total_length*PerceptibleReciprocal(maximum_length));
1832  dash_polygon[0].point.y=(double) (primitive_info[i-1].point.y+dy*
1833  total_length*PerceptibleReciprocal(maximum_length));
1834  j=1;
1835  }
1836  else
1837  {
1838  if ((j+1) > (ssize_t) number_vertices)
1839  break;
1840  dash_polygon[j]=primitive_info[i-1];
1841  dash_polygon[j].point.x=(double) (primitive_info[i-1].point.x+dx*
1842  total_length*PerceptibleReciprocal(maximum_length));
1843  dash_polygon[j].point.y=(double) (primitive_info[i-1].point.y+dy*
1844  total_length*PerceptibleReciprocal(maximum_length));
1845  dash_polygon[j].coordinates=1;
1846  j++;
1847  dash_polygon[0].coordinates=(size_t) j;
1848  dash_polygon[j].primitive=UndefinedPrimitive;
1849  status&=DrawStrokePolygon(image,clone_info,dash_polygon);
1850  if (status == MagickFalse)
1851  break;
1852  }
1853  if (fabs(draw_info->dash_pattern[n]) >= MagickEpsilon)
1854  n++;
1855  if (fabs(draw_info->dash_pattern[n]) < MagickEpsilon)
1856  n=0;
1857  length=scale*draw_info->dash_pattern[n];
1858  }
1859  length-=(maximum_length-total_length);
1860  if ((n & 0x01) != 0)
1861  continue;
1862  dash_polygon[j]=primitive_info[i];
1863  dash_polygon[j].coordinates=1;
1864  j++;
1865  }
1866  if ((status != MagickFalse) && (total_length < maximum_length) &&
1867  ((n & 0x01) == 0) && (j > 1))
1868  {
1869  dash_polygon[j]=primitive_info[i-1];
1870  dash_polygon[j].point.x+=MagickEpsilon;
1871  dash_polygon[j].point.y+=MagickEpsilon;
1872  dash_polygon[j].coordinates=1;
1873  j++;
1874  dash_polygon[0].coordinates=(size_t) j;
1875  dash_polygon[j].primitive=UndefinedPrimitive;
1876  status&=DrawStrokePolygon(image,clone_info,dash_polygon);
1877  }
1878  dash_polygon=(PrimitiveInfo *) RelinquishMagickMemory(dash_polygon);
1879  clone_info=DestroyDrawInfo(clone_info);
1880  if (draw_info->debug != MagickFalse)
1881  (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-dash");
1882  return(status != 0 ? MagickTrue : MagickFalse);
1883 }
1884 
1885 /*
1886 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1887 % %
1888 % %
1889 % %
1890 % D r a w G r a d i e n t I m a g e %
1891 % %
1892 % %
1893 % %
1894 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1895 %
1896 % DrawGradientImage() draws a linear gradient on the image.
1897 %
1898 % The format of the DrawGradientImage method is:
1899 %
1900 % MagickBooleanType DrawGradientImage(Image *image,
1901 % const DrawInfo *draw_info)
1902 %
1903 % A description of each parameter follows:
1904 %
1905 % o image: the image.
1906 %
1907 % o draw_info: the draw info.
1908 %
1909 */
1910 
1911 static inline double GetStopColorOffset(const GradientInfo *gradient,
1912  const ssize_t x,const ssize_t y)
1913 {
1914  switch (gradient->type)
1915  {
1916  case UndefinedGradient:
1917  case LinearGradient:
1918  {
1919  double
1920  gamma,
1921  length,
1922  offset,
1923  scale;
1924 
1925  PointInfo
1926  p,
1927  q;
1928 
1929  const SegmentInfo
1930  *gradient_vector;
1931 
1932  gradient_vector=(&gradient->gradient_vector);
1933  p.x=gradient_vector->x2-gradient_vector->x1;
1934  p.y=gradient_vector->y2-gradient_vector->y1;
1935  q.x=(double) x-gradient_vector->x1;
1936  q.y=(double) y-gradient_vector->y1;
1937  length=sqrt(q.x*q.x+q.y*q.y);
1938  gamma=sqrt(p.x*p.x+p.y*p.y)*length;
1939  gamma=PerceptibleReciprocal(gamma);
1940  scale=p.x*q.x+p.y*q.y;
1941  offset=gamma*scale*length;
1942  return(offset);
1943  }
1944  case RadialGradient:
1945  {
1946  PointInfo
1947  v;
1948 
1949  if (gradient->spread == RepeatSpread)
1950  {
1951  v.x=(double) x-gradient->center.x;
1952  v.y=(double) y-gradient->center.y;
1953  return(sqrt(v.x*v.x+v.y*v.y));
1954  }
1955  v.x=(double) (((x-gradient->center.x)*cos(DegreesToRadians(
1956  gradient->angle)))+((y-gradient->center.y)*sin(DegreesToRadians(
1957  gradient->angle))))*PerceptibleReciprocal(gradient->radii.x);
1958  v.y=(double) (((x-gradient->center.x)*sin(DegreesToRadians(
1959  gradient->angle)))-((y-gradient->center.y)*cos(DegreesToRadians(
1960  gradient->angle))))*PerceptibleReciprocal(gradient->radii.y);
1961  return(sqrt(v.x*v.x+v.y*v.y));
1962  }
1963  }
1964  return(0.0);
1965 }
1966 
1967 MagickExport MagickBooleanType DrawGradientImage(Image *image,
1968  const DrawInfo *draw_info)
1969 {
1970  CacheView
1971  *image_view;
1972 
1973  const GradientInfo
1974  *gradient;
1975 
1976  const SegmentInfo
1977  *gradient_vector;
1978 
1979  double
1980  length;
1981 
1983  *exception;
1984 
1985  MagickBooleanType
1986  status;
1987 
1989  zero;
1990 
1991  PointInfo
1992  point;
1993 
1995  bounding_box;
1996 
1997  ssize_t
1998  y;
1999 
2000  /*
2001  Draw linear or radial gradient on image.
2002  */
2003  assert(image != (Image *) NULL);
2004  assert(image->signature == MagickCoreSignature);
2005  assert(draw_info != (const DrawInfo *) NULL);
2006  if (IsEventLogging() != MagickFalse)
2007  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2008  gradient=(&draw_info->gradient);
2009  gradient_vector=(&gradient->gradient_vector);
2010  point.x=gradient_vector->x2-gradient_vector->x1;
2011  point.y=gradient_vector->y2-gradient_vector->y1;
2012  length=sqrt(point.x*point.x+point.y*point.y);
2013  bounding_box=gradient->bounding_box;
2014  status=MagickTrue;
2015  exception=(&image->exception);
2016  GetMagickPixelPacket(image,&zero);
2017  image_view=AcquireAuthenticCacheView(image,exception);
2018 #if defined(MAGICKCORE_OPENMP_SUPPORT)
2019  #pragma omp parallel for schedule(static) shared(status) \
2020  magick_number_threads(image,image,bounding_box.height-bounding_box.y,1)
2021 #endif
2022  for (y=bounding_box.y; y < (ssize_t) bounding_box.height; y++)
2023  {
2024  double
2025  alpha,
2026  offset;
2027 
2029  composite,
2030  pixel;
2031 
2032  IndexPacket
2033  *magick_restrict indexes;
2034 
2035  ssize_t
2036  i,
2037  x;
2038 
2039  PixelPacket
2040  *magick_restrict q;
2041 
2042  ssize_t
2043  j;
2044 
2045  if (status == MagickFalse)
2046  continue;
2047  q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
2048  if (q == (PixelPacket *) NULL)
2049  {
2050  status=MagickFalse;
2051  continue;
2052  }
2053  indexes=GetCacheViewAuthenticIndexQueue(image_view);
2054  pixel=zero;
2055  composite=zero;
2056  offset=GetStopColorOffset(gradient,0,y);
2057  if (gradient->type != RadialGradient)
2058  offset*=PerceptibleReciprocal(length);
2059  for (x=bounding_box.x; x < (ssize_t) bounding_box.width; x++)
2060  {
2061  SetMagickPixelPacket(image,q,indexes+x,&pixel);
2062  switch (gradient->spread)
2063  {
2064  case UndefinedSpread:
2065  case PadSpread:
2066  {
2067  if ((x != CastDoubleToLong(ceil(gradient_vector->x1-0.5))) ||
2068  (y != CastDoubleToLong(ceil(gradient_vector->y1-0.5))))
2069  {
2070  offset=GetStopColorOffset(gradient,x,y);
2071  if (gradient->type != RadialGradient)
2072  offset*=PerceptibleReciprocal(length);
2073  }
2074  for (i=0; i < (ssize_t) gradient->number_stops; i++)
2075  if (offset < gradient->stops[i].offset)
2076  break;
2077  if ((offset < 0.0) || (i == 0))
2078  composite=gradient->stops[0].color;
2079  else
2080  if ((offset > 1.0) || (i == (ssize_t) gradient->number_stops))
2081  composite=gradient->stops[gradient->number_stops-1].color;
2082  else
2083  {
2084  j=i;
2085  i--;
2086  alpha=(offset-gradient->stops[i].offset)/
2087  (gradient->stops[j].offset-gradient->stops[i].offset);
2088  MagickPixelCompositeBlend(&gradient->stops[i].color,1.0-alpha,
2089  &gradient->stops[j].color,alpha,&composite);
2090  }
2091  break;
2092  }
2093  case ReflectSpread:
2094  {
2095  if ((x != CastDoubleToLong(ceil(gradient_vector->x1-0.5))) ||
2096  (y != CastDoubleToLong(ceil(gradient_vector->y1-0.5))))
2097  {
2098  offset=GetStopColorOffset(gradient,x,y);
2099  if (gradient->type != RadialGradient)
2100  offset*=PerceptibleReciprocal(length);
2101  }
2102  if (offset < 0.0)
2103  offset=(-offset);
2104  if ((ssize_t) fmod(offset,2.0) == 0)
2105  offset=fmod(offset,1.0);
2106  else
2107  offset=1.0-fmod(offset,1.0);
2108  for (i=0; i < (ssize_t) gradient->number_stops; i++)
2109  if (offset < gradient->stops[i].offset)
2110  break;
2111  if (i == 0)
2112  composite=gradient->stops[0].color;
2113  else
2114  if (i == (ssize_t) gradient->number_stops)
2115  composite=gradient->stops[gradient->number_stops-1].color;
2116  else
2117  {
2118  j=i;
2119  i--;
2120  alpha=(offset-gradient->stops[i].offset)/
2121  (gradient->stops[j].offset-gradient->stops[i].offset);
2122  MagickPixelCompositeBlend(&gradient->stops[i].color,1.0-alpha,
2123  &gradient->stops[j].color,alpha,&composite);
2124  }
2125  break;
2126  }
2127  case RepeatSpread:
2128  {
2129  double
2130  repeat;
2131 
2132  MagickBooleanType
2133  antialias;
2134 
2135  antialias=MagickFalse;
2136  repeat=0.0;
2137  if ((x != CastDoubleToLong(ceil(gradient_vector->x1-0.5))) ||
2138  (y != CastDoubleToLong(ceil(gradient_vector->y1-0.5))))
2139  {
2140  offset=GetStopColorOffset(gradient,x,y);
2141  if (gradient->type == LinearGradient)
2142  {
2143  repeat=fmod(offset,length);
2144  if (repeat < 0.0)
2145  repeat=length-fmod(-repeat,length);
2146  else
2147  repeat=fmod(offset,length);
2148  antialias=(repeat < length) && ((repeat+1.0) > length) ?
2149  MagickTrue : MagickFalse;
2150  offset=PerceptibleReciprocal(length)*repeat;
2151  }
2152  else
2153  {
2154  repeat=fmod(offset,(double) gradient->radius);
2155  if (repeat < 0.0)
2156  repeat=gradient->radius-fmod(-repeat,
2157  (double) gradient->radius);
2158  else
2159  repeat=fmod(offset,(double) gradient->radius);
2160  antialias=repeat+1.0 > gradient->radius ? MagickTrue :
2161  MagickFalse;
2162  offset=repeat*PerceptibleReciprocal(gradient->radius);
2163  }
2164  }
2165  for (i=0; i < (ssize_t) gradient->number_stops; i++)
2166  if (offset < gradient->stops[i].offset)
2167  break;
2168  if (i == 0)
2169  composite=gradient->stops[0].color;
2170  else
2171  if (i == (ssize_t) gradient->number_stops)
2172  composite=gradient->stops[gradient->number_stops-1].color;
2173  else
2174  {
2175  j=i;
2176  i--;
2177  alpha=(offset-gradient->stops[i].offset)/
2178  (gradient->stops[j].offset-gradient->stops[i].offset);
2179  if (antialias != MagickFalse)
2180  {
2181  if (gradient->type == LinearGradient)
2182  alpha=length-repeat;
2183  else
2184  alpha=gradient->radius-repeat;
2185  i=0;
2186  j=(ssize_t) gradient->number_stops-1L;
2187  }
2188  MagickPixelCompositeBlend(&gradient->stops[i].color,1.0-alpha,
2189  &gradient->stops[j].color,alpha,&composite);
2190  }
2191  break;
2192  }
2193  }
2194  MagickPixelCompositeOver(&composite,composite.opacity,&pixel,
2195  pixel.opacity,&pixel);
2196  SetPixelPacket(image,&pixel,q,indexes+x);
2197  q++;
2198  }
2199  if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
2200  status=MagickFalse;
2201  }
2202  image_view=DestroyCacheView(image_view);
2203  return(status);
2204 }
2205 
2206 /*
2207 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2208 % %
2209 % %
2210 % %
2211 % D r a w I m a g e %
2212 % %
2213 % %
2214 % %
2215 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2216 %
2217 % DrawImage() draws a graphic primitive on your image. The primitive
2218 % may be represented as a string or filename. Precede the filename with an
2219 % "at" sign (@) and the contents of the file are drawn on the image. You
2220 % can affect how text is drawn by setting one or more members of the draw
2221 % info structure.
2222 %
2223 % The format of the DrawImage method is:
2224 %
2225 % MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info)
2226 %
2227 % A description of each parameter follows:
2228 %
2229 % o image: the image.
2230 %
2231 % o draw_info: the draw info.
2232 %
2233 */
2234 
2235 static MagickBooleanType CheckPrimitiveExtent(MVGInfo *mvg_info,
2236  const double pad)
2237 {
2238  char
2239  **text = (char **) NULL;
2240 
2241  double
2242  extent;
2243 
2244  size_t
2245  quantum;
2246 
2247  ssize_t
2248  i;
2249 
2250  /*
2251  Check if there is enough storage for drawing primitives.
2252  */
2253  quantum=sizeof(**mvg_info->primitive_info);
2254  extent=(double) mvg_info->offset+pad+(PrimitiveExtentPad+1)*quantum;
2255  if (extent <= (double) *mvg_info->extent)
2256  return(MagickTrue);
2257  if ((extent >= (double) MAGICK_SSIZE_MAX) || (IsNaN(extent) != 0))
2258  return(MagickFalse);
2259  if (mvg_info->offset > 0)
2260  {
2261  text=(char **) AcquireQuantumMemory(mvg_info->offset,sizeof(*text));
2262  if (text == (char **) NULL)
2263  return(MagickFalse);
2264  for (i=0; i < mvg_info->offset; i++)
2265  text[i]=(*mvg_info->primitive_info)[i].text;
2266  }
2267  *mvg_info->primitive_info=(PrimitiveInfo *) ResizeQuantumMemory(
2268  *mvg_info->primitive_info,(size_t) (extent+1),quantum);
2269  if (*mvg_info->primitive_info != (PrimitiveInfo *) NULL)
2270  {
2271  if (text != (char **) NULL)
2272  text=(char **) RelinquishMagickMemory(text);
2273  *mvg_info->extent=(size_t) extent;
2274  for (i=mvg_info->offset+1; i <= (ssize_t) extent; i++)
2275  {
2276  (*mvg_info->primitive_info)[i].primitive=UndefinedPrimitive;
2277  (*mvg_info->primitive_info)[i].text=(char *) NULL;
2278  }
2279  return(MagickTrue);
2280  }
2281  /*
2282  Reallocation failed, allocate a primitive to facilitate unwinding.
2283  */
2284  if (text != (char **) NULL)
2285  {
2286  for (i=0; i < mvg_info->offset; i++)
2287  if (text[i] != (char *) NULL)
2288  text[i]=DestroyString(text[i]);
2289  text=(char **) RelinquishMagickMemory(text);
2290  }
2291  (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
2292  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
2293  *mvg_info->primitive_info=(PrimitiveInfo *) AcquireCriticalMemory((size_t)
2294  (PrimitiveExtentPad+1)*quantum);
2295  (void) memset(*mvg_info->primitive_info,0,(size_t) ((PrimitiveExtentPad+1)*
2296  quantum));
2297  *mvg_info->extent=1;
2298  mvg_info->offset=0;
2299  return(MagickFalse);
2300 }
2301 
2302 static inline double GetDrawValue(const char *magick_restrict string,
2303  char **magick_restrict sentinal)
2304 {
2305  char
2306  **magick_restrict q;
2307 
2308  double
2309  value;
2310 
2311  q=sentinal;
2312  value=InterpretLocaleValue(string,q);
2313  sentinal=q;
2314  return(value);
2315 }
2316 
2317 static int MVGMacroCompare(const void *target,const void *source)
2318 {
2319  const char
2320  *p,
2321  *q;
2322 
2323  p=(const char *) target;
2324  q=(const char *) source;
2325  return(strcmp(p,q));
2326 }
2327 
2328 static SplayTreeInfo *GetMVGMacros(const char *primitive)
2329 {
2330  char
2331  *macro,
2332  *token;
2333 
2334  const char
2335  *q;
2336 
2337  size_t
2338  extent;
2339 
2341  *macros;
2342 
2343  /*
2344  Scan graphic primitives for definitions and classes.
2345  */
2346  if (primitive == (const char *) NULL)
2347  return((SplayTreeInfo *) NULL);
2348  macros=NewSplayTree(MVGMacroCompare,RelinquishMagickMemory,
2349  RelinquishMagickMemory);
2350  macro=AcquireString(primitive);
2351  token=AcquireString(primitive);
2352  extent=strlen(token)+MagickPathExtent;
2353  for (q=primitive; *q != '\0'; )
2354  {
2355  if (GetNextToken(q,&q,extent,token) < 1)
2356  break;
2357  if (*token == '\0')
2358  break;
2359  if (LocaleCompare("push",token) == 0)
2360  {
2361  const char
2362  *end,
2363  *start;
2364 
2365  (void) GetNextToken(q,&q,extent,token);
2366  if (*q == '"')
2367  {
2368  char
2369  name[MagickPathExtent];
2370 
2371  const char
2372  *p;
2373 
2374  ssize_t
2375  n;
2376 
2377  /*
2378  Named macro (e.g. push graphic-context "wheel").
2379  */
2380  (void) GetNextToken(q,&q,extent,token);
2381  start=q;
2382  end=q;
2383  (void) CopyMagickString(name,token,MagickPathExtent);
2384  n=1;
2385  for (p=q; *p != '\0'; )
2386  {
2387  if (GetNextToken(p,&p,extent,token) < 1)
2388  break;
2389  if (*token == '\0')
2390  break;
2391  if (LocaleCompare(token,"pop") == 0)
2392  {
2393  end=p-strlen(token)-1;
2394  n--;
2395  }
2396  if (LocaleCompare(token,"push") == 0)
2397  n++;
2398  if ((n == 0) && (end > start))
2399  {
2400  /*
2401  Extract macro.
2402  */
2403  (void) GetNextToken(p,&p,extent,token);
2404  (void) CopyMagickString(macro,start,(size_t) (end-start));
2405  (void) AddValueToSplayTree(macros,ConstantString(name),
2406  ConstantString(macro));
2407  break;
2408  }
2409  }
2410  }
2411  }
2412  }
2413  token=DestroyString(token);
2414  macro=DestroyString(macro);
2415  return(macros);
2416 }
2417 
2418 static inline MagickBooleanType IsPoint(const char *point)
2419 {
2420  char
2421  *p;
2422 
2423  double
2424  value;
2425 
2426  value=GetDrawValue(point,&p);
2427  return((fabs(value) < MagickEpsilon) && (p == point) ? MagickFalse :
2428  MagickTrue);
2429 }
2430 
2431 static inline MagickBooleanType TracePoint(PrimitiveInfo *primitive_info,
2432  const PointInfo point)
2433 {
2434  primitive_info->coordinates=1;
2435  primitive_info->closed_subpath=MagickFalse;
2436  primitive_info->point=point;
2437  return(MagickTrue);
2438 }
2439 
2440 static MagickBooleanType RenderMVGContent(Image *image,
2441  const DrawInfo *draw_info,const size_t depth)
2442 {
2443 #define RenderImageTag "Render/Image"
2444 
2445  AffineMatrix
2446  affine,
2447  current;
2448 
2449  char
2450  key[2*MaxTextExtent],
2451  keyword[MaxTextExtent],
2452  geometry[MaxTextExtent],
2453  name[MaxTextExtent],
2454  *next_token,
2455  pattern[MaxTextExtent],
2456  *primitive,
2457  *token;
2458 
2459  const char
2460  *q;
2461 
2462  double
2463  angle,
2464  coordinates,
2465  cursor,
2466  factor,
2467  primitive_extent;
2468 
2469  DrawInfo
2470  *clone_info,
2471  **graphic_context;
2472 
2473  MagickBooleanType
2474  proceed;
2475 
2476  MagickStatusType
2477  status;
2478 
2479  MVGInfo
2480  mvg_info;
2481 
2482  PointInfo
2483  point;
2484 
2485  PixelPacket
2486  start_color;
2487 
2489  *primitive_info;
2490 
2491  PrimitiveType
2492  primitive_type;
2493 
2494  const char
2495  *p;
2496 
2497  ssize_t
2498  i,
2499  x;
2500 
2501  SegmentInfo
2502  bounds;
2503 
2504  size_t
2505  extent,
2506  number_points;
2507 
2509  *macros;
2510 
2511  ssize_t
2512  defsDepth,
2513  j,
2514  k,
2515  n,
2516  symbolDepth;
2517 
2518  TypeMetric
2519  metrics;
2520 
2521  assert(image != (Image *) NULL);
2522  assert(image->signature == MagickCoreSignature);
2523  assert(draw_info != (DrawInfo *) NULL);
2524  assert(draw_info->signature == MagickCoreSignature);
2525  if (IsEventLogging() != MagickFalse)
2526  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2527  if (depth > MagickMaxRecursionDepth)
2528  ThrowBinaryImageException(DrawError,"VectorGraphicsNestedTooDeeply",
2529  image->filename);
2530  if ((draw_info->primitive == (char *) NULL) ||
2531  (*draw_info->primitive == '\0'))
2532  return(MagickFalse);
2533  if (draw_info->debug != MagickFalse)
2534  (void) LogMagickEvent(DrawEvent,GetMagickModule(),"begin draw-image");
2535  if (SetImageStorageClass(image,DirectClass) == MagickFalse)
2536  return(MagickFalse);
2537  if (image->matte == MagickFalse)
2538  {
2539  status=SetImageAlphaChannel(image,OpaqueAlphaChannel);
2540  if (status == MagickFalse)
2541  return(MagickFalse);
2542  }
2543  primitive=(char *) NULL;
2544  if ((*draw_info->primitive == '@') && (strlen(draw_info->primitive) > 1) &&
2545  (*(draw_info->primitive+1) != '-') && (depth == 0))
2546  primitive=FileToString(draw_info->primitive+1,~0UL,&image->exception);
2547  else
2548  primitive=AcquireString(draw_info->primitive);
2549  if (primitive == (char *) NULL)
2550  return(MagickFalse);
2551  primitive_extent=(double) strlen(primitive);
2552  (void) SetImageArtifact(image,"mvg:vector-graphics",primitive);
2553  n=0;
2554  /*
2555  Allocate primitive info memory.
2556  */
2557  graphic_context=(DrawInfo **) AcquireMagickMemory(sizeof(*graphic_context));
2558  if (graphic_context == (DrawInfo **) NULL)
2559  {
2560  primitive=DestroyString(primitive);
2561  ThrowBinaryImageException(ResourceLimitError,"MemoryAllocationFailed",
2562  image->filename);
2563  }
2564  number_points=(size_t) PrimitiveExtentPad;
2565  primitive_info=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
2566  (number_points+1),sizeof(*primitive_info));
2567  if (primitive_info == (PrimitiveInfo *) NULL)
2568  {
2569  primitive=DestroyString(primitive);
2570  for ( ; n >= 0; n--)
2571  graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
2572  graphic_context=(DrawInfo **) RelinquishMagickMemory(graphic_context);
2573  ThrowBinaryImageException(ResourceLimitError,"MemoryAllocationFailed",
2574  image->filename);
2575  }
2576  (void) memset(primitive_info,0,(size_t) (number_points+1)*
2577  sizeof(*primitive_info));
2578  (void) memset(&mvg_info,0,sizeof(mvg_info));
2579  mvg_info.primitive_info=(&primitive_info);
2580  mvg_info.extent=(&number_points);
2581  mvg_info.exception=(&image->exception);
2582  graphic_context[n]=CloneDrawInfo((ImageInfo *) NULL,draw_info);
2583  graphic_context[n]->viewbox=image->page;
2584  if ((image->page.width == 0) || (image->page.height == 0))
2585  {
2586  graphic_context[n]->viewbox.width=image->columns;
2587  graphic_context[n]->viewbox.height=image->rows;
2588  }
2589  token=AcquireString(primitive);
2590  extent=strlen(token)+MaxTextExtent;
2591  cursor=0.0;
2592  defsDepth=0;
2593  symbolDepth=0;
2594  macros=GetMVGMacros(primitive);
2595  status=QueryColorDatabase("#000000",&start_color,&image->exception);
2596  for (q=primitive; *q != '\0'; )
2597  {
2598  /*
2599  Interpret graphic primitive.
2600  */
2601  if (GetNextToken(q,&q,MaxTextExtent,keyword) < 1)
2602  break;
2603  if (*keyword == '\0')
2604  break;
2605  if (*keyword == '#')
2606  {
2607  /*
2608  Comment.
2609  */
2610  while ((*q != '\n') && (*q != '\0'))
2611  q++;
2612  continue;
2613  }
2614  p=q-strlen(keyword)-1;
2615  primitive_type=UndefinedPrimitive;
2616  current=graphic_context[n]->affine;
2617  GetAffineMatrix(&affine);
2618  *token='\0';
2619  switch (*keyword)
2620  {
2621  case ';':
2622  break;
2623  case 'a':
2624  case 'A':
2625  {
2626  if (LocaleCompare("affine",keyword) == 0)
2627  {
2628  (void) GetNextToken(q,&q,extent,token);
2629  affine.sx=GetDrawValue(token,&next_token);
2630  if (token == next_token)
2631  ThrowPointExpectedException(image,token);
2632  (void) GetNextToken(q,&q,extent,token);
2633  if (*token == ',')
2634  (void) GetNextToken(q,&q,extent,token);
2635  affine.rx=GetDrawValue(token,&next_token);
2636  if (token == next_token)
2637  ThrowPointExpectedException(image,token);
2638  (void) GetNextToken(q,&q,extent,token);
2639  if (*token == ',')
2640  (void) GetNextToken(q,&q,extent,token);
2641  affine.ry=GetDrawValue(token,&next_token);
2642  if (token == next_token)
2643  ThrowPointExpectedException(image,token);
2644  (void) GetNextToken(q,&q,extent,token);
2645  if (*token == ',')
2646  (void) GetNextToken(q,&q,extent,token);
2647  affine.sy=GetDrawValue(token,&next_token);
2648  if (token == next_token)
2649  ThrowPointExpectedException(image,token);
2650  (void) GetNextToken(q,&q,extent,token);
2651  if (*token == ',')
2652  (void) GetNextToken(q,&q,extent,token);
2653  affine.tx=GetDrawValue(token,&next_token);
2654  if (token == next_token)
2655  ThrowPointExpectedException(image,token);
2656  (void) GetNextToken(q,&q,extent,token);
2657  if (*token == ',')
2658  (void) GetNextToken(q,&q,extent,token);
2659  affine.ty=GetDrawValue(token,&next_token);
2660  if (token == next_token)
2661  ThrowPointExpectedException(image,token);
2662  break;
2663  }
2664  if (LocaleCompare("arc",keyword) == 0)
2665  {
2666  primitive_type=ArcPrimitive;
2667  break;
2668  }
2669  status=MagickFalse;
2670  break;
2671  }
2672  case 'b':
2673  case 'B':
2674  {
2675  if (LocaleCompare("bezier",keyword) == 0)
2676  {
2677  primitive_type=BezierPrimitive;
2678  break;
2679  }
2680  if (LocaleCompare("border-color",keyword) == 0)
2681  {
2682  (void) GetNextToken(q,&q,extent,token);
2683  status&=QueryColorDatabase(token,&graphic_context[n]->border_color,
2684  &image->exception);
2685  break;
2686  }
2687  status=MagickFalse;
2688  break;
2689  }
2690  case 'c':
2691  case 'C':
2692  {
2693  if (LocaleCompare("class",keyword) == 0)
2694  {
2695  const char
2696  *mvg_class;
2697 
2698  (void) GetNextToken(q,&q,extent,token);
2699  if (*token == '\0')
2700  {
2701  status=MagickFalse;
2702  break;
2703  }
2704  if (LocaleCompare(token,graphic_context[n]->id) == 0)
2705  break;
2706  mvg_class=(const char *) GetValueFromSplayTree(macros,token);
2707  if ((graphic_context[n]->render != MagickFalse) &&
2708  (mvg_class != (const char *) NULL) && (p > primitive))
2709  {
2710  char
2711  *elements;
2712 
2713  ssize_t
2714  offset;
2715 
2716  /*
2717  Inject class elements in stream.
2718  */
2719  offset=(ssize_t) (p-primitive);
2720  elements=AcquireString(primitive);
2721  elements[offset]='\0';
2722  (void) ConcatenateString(&elements,mvg_class);
2723  (void) ConcatenateString(&elements,"\n");
2724  (void) ConcatenateString(&elements,q);
2725  primitive=DestroyString(primitive);
2726  primitive=elements;
2727  q=primitive+offset;
2728  }
2729  break;
2730  }
2731  if (LocaleCompare("clip-path",keyword) == 0)
2732  {
2733  const char
2734  *clip_path;
2735 
2736  /*
2737  Take a node from within the MVG document, and duplicate it here.
2738  */
2739  (void) GetNextToken(q,&q,extent,token);
2740  if (*token == '\0')
2741  {
2742  status=MagickFalse;
2743  break;
2744  }
2745  (void) CloneString(&graphic_context[n]->clip_mask,token);
2746  clip_path=(const char *) GetValueFromSplayTree(macros,token);
2747  if (clip_path != (const char *) NULL)
2748  {
2749  if (graphic_context[n]->clipping_mask != (Image *) NULL)
2750  graphic_context[n]->clipping_mask=
2751  DestroyImage(graphic_context[n]->clipping_mask);
2752  graphic_context[n]->clipping_mask=DrawClippingMask(image,
2753  graphic_context[n],token,clip_path,&image->exception);
2754  if (graphic_context[n]->compliance != SVGCompliance)
2755  {
2756  const char
2757  *clip_path;
2758 
2759  clip_path=(const char *) GetValueFromSplayTree(macros,
2760  graphic_context[n]->clip_mask);
2761  if (clip_path != (const char *) NULL)
2762  (void) SetImageArtifact(image,
2763  graphic_context[n]->clip_mask,clip_path);
2764  status&=DrawClipPath(image,graphic_context[n],
2765  graphic_context[n]->clip_mask);
2766  }
2767  }
2768  break;
2769  }
2770  if (LocaleCompare("clip-rule",keyword) == 0)
2771  {
2772  ssize_t
2773  fill_rule;
2774 
2775  (void) GetNextToken(q,&q,extent,token);
2776  fill_rule=ParseCommandOption(MagickFillRuleOptions,MagickFalse,
2777  token);
2778  if (fill_rule == -1)
2779  {
2780  status=MagickFalse;
2781  break;
2782  }
2783  graphic_context[n]->fill_rule=(FillRule) fill_rule;
2784  break;
2785  }
2786  if (LocaleCompare("clip-units",keyword) == 0)
2787  {
2788  ssize_t
2789  clip_units;
2790 
2791  (void) GetNextToken(q,&q,extent,token);
2792  clip_units=ParseCommandOption(MagickClipPathOptions,MagickFalse,
2793  token);
2794  if (clip_units == -1)
2795  {
2796  status=MagickFalse;
2797  break;
2798  }
2799  graphic_context[n]->clip_units=(ClipPathUnits) clip_units;
2800  if (clip_units == ObjectBoundingBox)
2801  {
2802  GetAffineMatrix(&current);
2803  affine.sx=draw_info->bounds.x2;
2804  affine.sy=draw_info->bounds.y2;
2805  affine.tx=draw_info->bounds.x1;
2806  affine.ty=draw_info->bounds.y1;
2807  break;
2808  }
2809  break;
2810  }
2811  if (LocaleCompare("circle",keyword) == 0)
2812  {
2813  primitive_type=CirclePrimitive;
2814  break;
2815  }
2816  if (LocaleCompare("color",keyword) == 0)
2817  {
2818  primitive_type=ColorPrimitive;
2819  break;
2820  }
2821  if (LocaleCompare("compliance",keyword) == 0)
2822  {
2823  /*
2824  MVG compliance associates a clipping mask with an image; SVG
2825  compliance associates a clipping mask with a graphics context.
2826  */
2827  (void) GetNextToken(q,&q,extent,token);
2828  graphic_context[n]->compliance=(ComplianceType) ParseCommandOption(
2829  MagickComplianceOptions,MagickFalse,token);
2830  break;
2831  }
2832  if (LocaleCompare("currentColor",keyword) == 0)
2833  {
2834  (void) GetNextToken(q,&q,extent,token);
2835  break;
2836  }
2837  status=MagickFalse;
2838  break;
2839  }
2840  case 'd':
2841  case 'D':
2842  {
2843  if (LocaleCompare("decorate",keyword) == 0)
2844  {
2845  ssize_t
2846  decorate;
2847 
2848  (void) GetNextToken(q,&q,extent,token);
2849  decorate=ParseCommandOption(MagickDecorateOptions,MagickFalse,
2850  token);
2851  if (decorate == -1)
2852  {
2853  status=MagickFalse;
2854  break;
2855  }
2856  graphic_context[n]->decorate=(DecorationType) decorate;
2857  break;
2858  }
2859  if (LocaleCompare("density",keyword) == 0)
2860  {
2861  (void) GetNextToken(q,&q,extent,token);
2862  (void) CloneString(&graphic_context[n]->density,token);
2863  break;
2864  }
2865  if (LocaleCompare("direction",keyword) == 0)
2866  {
2867  ssize_t
2868  direction;
2869 
2870  (void) GetNextToken(q,&q,extent,token);
2871  direction=ParseCommandOption(MagickDirectionOptions,MagickFalse,
2872  token);
2873  if (direction == -1)
2874  status=MagickFalse;
2875  else
2876  graphic_context[n]->direction=(DirectionType) direction;
2877  break;
2878  }
2879  status=MagickFalse;
2880  break;
2881  }
2882  case 'e':
2883  case 'E':
2884  {
2885  if (LocaleCompare("ellipse",keyword) == 0)
2886  {
2887  primitive_type=EllipsePrimitive;
2888  break;
2889  }
2890  if (LocaleCompare("encoding",keyword) == 0)
2891  {
2892  (void) GetNextToken(q,&q,extent,token);
2893  (void) CloneString(&graphic_context[n]->encoding,token);
2894  break;
2895  }
2896  status=MagickFalse;
2897  break;
2898  }
2899  case 'f':
2900  case 'F':
2901  {
2902  if (LocaleCompare("fill",keyword) == 0)
2903  {
2904  const char
2905  *mvg_class;
2906 
2907  (void) GetNextToken(q,&q,extent,token);
2908  if (graphic_context[n]->clip_path != MagickFalse)
2909  break;
2910  mvg_class=(const char *) GetValueFromSplayTree(macros,token);
2911  if (mvg_class != (const char *) NULL)
2912  {
2913  (void) DrawPatternPath(image,draw_info,mvg_class,
2914  &graphic_context[n]->fill_pattern);
2915  break;
2916  }
2917  (void) FormatLocaleString(pattern,MaxTextExtent,"%s",token);
2918  if (GetImageArtifact(image,pattern) != (const char *) NULL)
2919  {
2920  (void) DrawPatternPath(image,draw_info,token,
2921  &graphic_context[n]->fill_pattern);
2922  break;
2923  }
2924  status&=QueryColorDatabase(token,&graphic_context[n]->fill,
2925  &image->exception);
2926  if (graphic_context[n]->fill_opacity != OpaqueOpacity)
2927  graphic_context[n]->fill.opacity=ClampToQuantum(
2928  graphic_context[n]->fill_opacity);
2929  break;
2930  }
2931  if (LocaleCompare("fill-opacity",keyword) == 0)
2932  {
2933  double
2934  opacity;
2935 
2936  (void) GetNextToken(q,&q,extent,token);
2937  if (graphic_context[n]->clip_path != MagickFalse)
2938  break;
2939  factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
2940  opacity=MagickMin(MagickMax(factor*
2941  GetDrawValue(token,&next_token),0.0),1.0);
2942  if (token == next_token)
2943  ThrowPointExpectedException(image,token);
2944  if (graphic_context[n]->compliance == SVGCompliance)
2945  graphic_context[n]->fill_opacity*=(1.0-opacity);
2946  else
2947  graphic_context[n]->fill_opacity=(QuantumRange-
2948  graphic_context[n]->fill_opacity)*(1.0-opacity);
2949  if (graphic_context[n]->fill.opacity != TransparentOpacity)
2950  graphic_context[n]->fill.opacity=(Quantum)
2951  graphic_context[n]->fill_opacity;
2952  else
2953  graphic_context[n]->fill.opacity=ClampToQuantum(QuantumRange*
2954  (1.0-opacity));
2955  break;
2956  }
2957  if (LocaleCompare("fill-rule",keyword) == 0)
2958  {
2959  ssize_t
2960  fill_rule;
2961 
2962  (void) GetNextToken(q,&q,extent,token);
2963  fill_rule=ParseCommandOption(MagickFillRuleOptions,MagickFalse,
2964  token);
2965  if (fill_rule == -1)
2966  {
2967  status=MagickFalse;
2968  break;
2969  }
2970  graphic_context[n]->fill_rule=(FillRule) fill_rule;
2971  break;
2972  }
2973  if (LocaleCompare("font",keyword) == 0)
2974  {
2975  (void) GetNextToken(q,&q,extent,token);
2976  (void) CloneString(&graphic_context[n]->font,token);
2977  if (LocaleCompare("none",token) == 0)
2978  graphic_context[n]->font=(char *) RelinquishMagickMemory(
2979  graphic_context[n]->font);
2980  break;
2981  }
2982  if (LocaleCompare("font-family",keyword) == 0)
2983  {
2984  (void) GetNextToken(q,&q,extent,token);
2985  (void) CloneString(&graphic_context[n]->family,token);
2986  break;
2987  }
2988  if (LocaleCompare("font-size",keyword) == 0)
2989  {
2990  (void) GetNextToken(q,&q,extent,token);
2991  graphic_context[n]->pointsize=GetDrawValue(token,&next_token);
2992  if (token == next_token)
2993  ThrowPointExpectedException(image,token);
2994  break;
2995  }
2996  if (LocaleCompare("font-stretch",keyword) == 0)
2997  {
2998  ssize_t
2999  stretch;
3000 
3001  (void) GetNextToken(q,&q,extent,token);
3002  stretch=ParseCommandOption(MagickStretchOptions,MagickFalse,token);
3003  if (stretch == -1)
3004  {
3005  status=MagickFalse;
3006  break;
3007  }
3008  graphic_context[n]->stretch=(StretchType) stretch;
3009  break;
3010  }
3011  if (LocaleCompare("font-style",keyword) == 0)
3012  {
3013  ssize_t
3014  style;
3015 
3016  (void) GetNextToken(q,&q,extent,token);
3017  style=ParseCommandOption(MagickStyleOptions,MagickFalse,token);
3018  if (style == -1)
3019  {
3020  status=MagickFalse;
3021  break;
3022  }
3023  graphic_context[n]->style=(StyleType) style;
3024  break;
3025  }
3026  if (LocaleCompare("font-weight",keyword) == 0)
3027  {
3028  ssize_t
3029  weight;
3030 
3031  (void) GetNextToken(q,&q,extent,token);
3032  weight=ParseCommandOption(MagickWeightOptions,MagickFalse,token);
3033  if (weight == -1)
3034  weight=(ssize_t) StringToUnsignedLong(token);
3035  graphic_context[n]->weight=(size_t) weight;
3036  break;
3037  }
3038  status=MagickFalse;
3039  break;
3040  }
3041  case 'g':
3042  case 'G':
3043  {
3044  if (LocaleCompare("gradient-units",keyword) == 0)
3045  {
3046  (void) GetNextToken(q,&q,extent,token);
3047  break;
3048  }
3049  if (LocaleCompare("gravity",keyword) == 0)
3050  {
3051  ssize_t
3052  gravity;
3053 
3054  (void) GetNextToken(q,&q,extent,token);
3055  gravity=ParseCommandOption(MagickGravityOptions,MagickFalse,token);
3056  if (gravity == -1)
3057  {
3058  status=MagickFalse;
3059  break;
3060  }
3061  graphic_context[n]->gravity=(GravityType) gravity;
3062  break;
3063  }
3064  status=MagickFalse;
3065  break;
3066  }
3067  case 'i':
3068  case 'I':
3069  {
3070  if (LocaleCompare("image",keyword) == 0)
3071  {
3072  ssize_t
3073  compose;
3074 
3075  primitive_type=ImagePrimitive;
3076  (void) GetNextToken(q,&q,extent,token);
3077  compose=ParseCommandOption(MagickComposeOptions,MagickFalse,token);
3078  if (compose == -1)
3079  {
3080  status=MagickFalse;
3081  break;
3082  }
3083  graphic_context[n]->compose=(CompositeOperator) compose;
3084  break;
3085  }
3086  if (LocaleCompare("interline-spacing",keyword) == 0)
3087  {
3088  (void) GetNextToken(q,&q,extent,token);
3089  graphic_context[n]->interline_spacing=GetDrawValue(token,
3090  &next_token);
3091  if (token == next_token)
3092  ThrowPointExpectedException(image,token);
3093  break;
3094  }
3095  if (LocaleCompare("interword-spacing",keyword) == 0)
3096  {
3097  (void) GetNextToken(q,&q,extent,token);
3098  graphic_context[n]->interword_spacing=GetDrawValue(token,
3099  &next_token);
3100  if (token == next_token)
3101  ThrowPointExpectedException(image,token);
3102  break;
3103  }
3104  status=MagickFalse;
3105  break;
3106  }
3107  case 'k':
3108  case 'K':
3109  {
3110  if (LocaleCompare("kerning",keyword) == 0)
3111  {
3112  (void) GetNextToken(q,&q,extent,token);
3113  graphic_context[n]->kerning=GetDrawValue(token,&next_token);
3114  if (token == next_token)
3115  ThrowPointExpectedException(image,token);
3116  break;
3117  }
3118  status=MagickFalse;
3119  break;
3120  }
3121  case 'l':
3122  case 'L':
3123  {
3124  if (LocaleCompare("letter-spacing",keyword) == 0)
3125  {
3126  (void) GetNextToken(q,&q,extent,token);
3127  if (IsPoint(token) == MagickFalse)
3128  break;
3129  clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
3130  clone_info->text=AcquireString(" ");
3131  status&=GetTypeMetrics(image,clone_info,&metrics);
3132  graphic_context[n]->kerning=metrics.width*
3133  GetDrawValue(token,&next_token);
3134  clone_info=DestroyDrawInfo(clone_info);
3135  if (token == next_token)
3136  ThrowPointExpectedException(image,token);
3137  break;
3138  }
3139  if (LocaleCompare("line",keyword) == 0)
3140  {
3141  primitive_type=LinePrimitive;
3142  break;
3143  }
3144  status=MagickFalse;
3145  break;
3146  }
3147  case 'm':
3148  case 'M':
3149  {
3150  if (LocaleCompare("mask",keyword) == 0)
3151  {
3152  const char
3153  *mask_path;
3154 
3155  /*
3156  Take a node from within the MVG document, and duplicate it here.
3157  */
3158  (void) GetNextToken(q,&q,extent,token);
3159  mask_path=(const char *) GetValueFromSplayTree(macros,token);
3160  if (mask_path != (const char *) NULL)
3161  {
3162  if (graphic_context[n]->composite_mask != (Image *) NULL)
3163  graphic_context[n]->composite_mask=
3164  DestroyImage(graphic_context[n]->composite_mask);
3165  graphic_context[n]->composite_mask=DrawCompositeMask(image,
3166  graphic_context[n],token,mask_path,&image->exception);
3167  if (graphic_context[n]->compliance != SVGCompliance)
3168  status=SetImageMask(image,graphic_context[n]->composite_mask);
3169  }
3170  break;
3171  }
3172  if (LocaleCompare("matte",keyword) == 0)
3173  {
3174  primitive_type=MattePrimitive;
3175  break;
3176  }
3177  status=MagickFalse;
3178  break;
3179  }
3180  case 'o':
3181  case 'O':
3182  {
3183  if (LocaleCompare("offset",keyword) == 0)
3184  {
3185  (void) GetNextToken(q,&q,extent,token);
3186  break;
3187  }
3188  if (LocaleCompare("opacity",keyword) == 0)
3189  {
3190  double
3191  opacity;
3192 
3193  (void) GetNextToken(q,&q,extent,token);
3194  if (graphic_context[n]->clip_path != MagickFalse)
3195  break;
3196  factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3197  opacity=MagickMin(MagickMax(factor*
3198  GetDrawValue(token,&next_token),0.0),1.0);
3199  if (token == next_token)
3200  ThrowPointExpectedException(image,token);
3201  if (graphic_context[n]->compliance == SVGCompliance)
3202  {
3203  graphic_context[n]->fill_opacity*=(1.0-opacity);
3204  graphic_context[n]->stroke_opacity*=(1.0-opacity);
3205  }
3206  else
3207  {
3208  graphic_context[n]->fill_opacity=(QuantumRange-
3209  graphic_context[n]->fill_opacity)*(1.0-opacity);
3210  graphic_context[n]->stroke_opacity=(QuantumRange-
3211  graphic_context[n]->stroke_opacity)*(1.0-opacity);
3212  }
3213  break;
3214  }
3215  status=MagickFalse;
3216  break;
3217  }
3218  case 'p':
3219  case 'P':
3220  {
3221  if (LocaleCompare("path",keyword) == 0)
3222  {
3223  primitive_type=PathPrimitive;
3224  break;
3225  }
3226  if (LocaleCompare("point",keyword) == 0)
3227  {
3228  primitive_type=PointPrimitive;
3229  break;
3230  }
3231  if (LocaleCompare("polyline",keyword) == 0)
3232  {
3233  primitive_type=PolylinePrimitive;
3234  break;
3235  }
3236  if (LocaleCompare("polygon",keyword) == 0)
3237  {
3238  primitive_type=PolygonPrimitive;
3239  break;
3240  }
3241  if (LocaleCompare("pop",keyword) == 0)
3242  {
3243  if (GetNextToken(q,&q,extent,token) < 1)
3244  break;
3245  if (LocaleCompare("class",token) == 0)
3246  break;
3247  if (LocaleCompare("clip-path",token) == 0)
3248  break;
3249  if (LocaleCompare("defs",token) == 0)
3250  {
3251  defsDepth--;
3252  graphic_context[n]->render=defsDepth > 0 ? MagickFalse :
3253  MagickTrue;
3254  break;
3255  }
3256  if (LocaleCompare("gradient",token) == 0)
3257  break;
3258  if (LocaleCompare("graphic-context",token) == 0)
3259  {
3260  if (n <= 0)
3261  {
3262  (void) ThrowMagickException(&image->exception,
3263  GetMagickModule(),DrawError,
3264  "UnbalancedGraphicContextPushPop","`%s'",token);
3265  status=MagickFalse;
3266  n=0;
3267  break;
3268  }
3269  if ((graphic_context[n]->clip_mask != (char *) NULL) &&
3270  (graphic_context[n]->compliance != SVGCompliance))
3271  if (LocaleCompare(graphic_context[n]->clip_mask,
3272  graphic_context[n-1]->clip_mask) != 0)
3273  status=SetImageClipMask(image,(Image *) NULL);
3274  graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
3275  n--;
3276  break;
3277  }
3278  if (LocaleCompare("mask",token) == 0)
3279  break;
3280  if (LocaleCompare("pattern",token) == 0)
3281  break;
3282  if (LocaleCompare("symbol",token) == 0)
3283  {
3284  symbolDepth--;
3285  graphic_context[n]->render=symbolDepth > 0 ? MagickFalse :
3286  MagickTrue;
3287  break;
3288  }
3289  status=MagickFalse;
3290  break;
3291  }
3292  if (LocaleCompare("push",keyword) == 0)
3293  {
3294  if (GetNextToken(q,&q,extent,token) < 1)
3295  break;
3296  if (LocaleCompare("class",token) == 0)
3297  {
3298  /*
3299  Class context.
3300  */
3301  for (p=q; *q != '\0'; )
3302  {
3303  if (GetNextToken(q,&q,extent,token) < 1)
3304  break;
3305  if (LocaleCompare(token,"pop") != 0)
3306  continue;
3307  (void) GetNextToken(q,(const char **) NULL,extent,token);
3308  if (LocaleCompare(token,"class") != 0)
3309  continue;
3310  break;
3311  }
3312  (void) GetNextToken(q,&q,extent,token);
3313  break;
3314  }
3315  if (LocaleCompare("clip-path",token) == 0)
3316  {
3317  (void) GetNextToken(q,&q,extent,token);
3318  for (p=q; *q != '\0'; )
3319  {
3320  if (GetNextToken(q,&q,extent,token) < 1)
3321  break;
3322  if (LocaleCompare(token,"pop") != 0)
3323  continue;
3324  (void) GetNextToken(q,(const char **) NULL,extent,token);
3325  if (LocaleCompare(token,"clip-path") != 0)
3326  continue;
3327  break;
3328  }
3329  if ((q == (char *) NULL) || (p == (char *) NULL) || ((q-4) < p))
3330  {
3331  status=MagickFalse;
3332  break;
3333  }
3334  (void) GetNextToken(q,&q,extent,token);
3335  break;
3336  }
3337  if (LocaleCompare("defs",token) == 0)
3338  {
3339  defsDepth++;
3340  graphic_context[n]->render=defsDepth > 0 ? MagickFalse :
3341  MagickTrue;
3342  break;
3343  }
3344  if (LocaleCompare("gradient",token) == 0)
3345  {
3346  char
3347  key[2*MaxTextExtent],
3348  name[MaxTextExtent],
3349  type[MaxTextExtent];
3350 
3351  SegmentInfo
3352  segment;
3353 
3354  (void) GetNextToken(q,&q,extent,token);
3355  (void) CopyMagickString(name,token,MaxTextExtent);
3356  (void) GetNextToken(q,&q,extent,token);
3357  (void) CopyMagickString(type,token,MaxTextExtent);
3358  (void) GetNextToken(q,&q,extent,token);
3359  segment.x1=GetDrawValue(token,&next_token);
3360  if (token == next_token)
3361  ThrowPointExpectedException(image,token);
3362  (void) GetNextToken(q,&q,extent,token);
3363  if (*token == ',')
3364  (void) GetNextToken(q,&q,extent,token);
3365  segment.y1=GetDrawValue(token,&next_token);
3366  if (token == next_token)
3367  ThrowPointExpectedException(image,token);
3368  (void) GetNextToken(q,&q,extent,token);
3369  if (*token == ',')
3370  (void) GetNextToken(q,&q,extent,token);
3371  segment.x2=GetDrawValue(token,&next_token);
3372  if (token == next_token)
3373  ThrowPointExpectedException(image,token);
3374  (void) GetNextToken(q,&q,extent,token);
3375  if (*token == ',')
3376  (void) GetNextToken(q,&q,extent,token);
3377  segment.y2=GetDrawValue(token,&next_token);
3378  if (token == next_token)
3379  ThrowPointExpectedException(image,token);
3380  if (LocaleCompare(type,"radial") == 0)
3381  {
3382  (void) GetNextToken(q,&q,extent,token);
3383  if (*token == ',')
3384  (void) GetNextToken(q,&q,extent,token);
3385  }
3386  for (p=q; *q != '\0'; )
3387  {
3388  if (GetNextToken(q,&q,extent,token) < 1)
3389  break;
3390  if (LocaleCompare(token,"pop") != 0)
3391  continue;
3392  (void) GetNextToken(q,(const char **) NULL,extent,token);
3393  if (LocaleCompare(token,"gradient") != 0)
3394  continue;
3395  break;
3396  }
3397  if ((q == (char *) NULL) || (p == (char *) NULL) || ((q-4) < p))
3398  {
3399  status=MagickFalse;
3400  break;
3401  }
3402  (void) CopyMagickString(token,p,(size_t) (q-p-4+1));
3403  bounds.x1=graphic_context[n]->affine.sx*segment.x1+
3404  graphic_context[n]->affine.ry*segment.y1+
3405  graphic_context[n]->affine.tx;
3406  bounds.y1=graphic_context[n]->affine.rx*segment.x1+
3407  graphic_context[n]->affine.sy*segment.y1+
3408  graphic_context[n]->affine.ty;
3409  bounds.x2=graphic_context[n]->affine.sx*segment.x2+
3410  graphic_context[n]->affine.ry*segment.y2+
3411  graphic_context[n]->affine.tx;
3412  bounds.y2=graphic_context[n]->affine.rx*segment.x2+
3413  graphic_context[n]->affine.sy*segment.y2+
3414  graphic_context[n]->affine.ty;
3415  (void) FormatLocaleString(key,MaxTextExtent,"%s",name);
3416  (void) SetImageArtifact(image,key,token);
3417  (void) FormatLocaleString(key,MaxTextExtent,"%s-type",name);
3418  (void) SetImageArtifact(image,key,type);
3419  (void) FormatLocaleString(key,MaxTextExtent,"%s-geometry",name);
3420  (void) FormatLocaleString(geometry,MaxTextExtent,
3421  "%gx%g%+.15g%+.15g",
3422  MagickMax(fabs(bounds.x2-bounds.x1+1.0),1.0),
3423  MagickMax(fabs(bounds.y2-bounds.y1+1.0),1.0),
3424  bounds.x1,bounds.y1);
3425  (void) SetImageArtifact(image,key,geometry);
3426  (void) GetNextToken(q,&q,extent,token);
3427  break;
3428  }
3429  if (LocaleCompare("graphic-context",token) == 0)
3430  {
3431  n++;
3432  graphic_context=(DrawInfo **) ResizeQuantumMemory(
3433  graphic_context,(size_t) (n+1),sizeof(*graphic_context));
3434  if (graphic_context == (DrawInfo **) NULL)
3435  {
3436  (void) ThrowMagickException(&image->exception,
3437  GetMagickModule(),ResourceLimitError,
3438  "MemoryAllocationFailed","`%s'",image->filename);
3439  break;
3440  }
3441  graphic_context[n]=CloneDrawInfo((ImageInfo *) NULL,
3442  graphic_context[n-1]);
3443  if (*q == '"')
3444  {
3445  (void) GetNextToken(q,&q,extent,token);
3446  (void) CloneString(&graphic_context[n]->id,token);
3447  }
3448  break;
3449  }
3450  if (LocaleCompare("mask",token) == 0)
3451  {
3452  (void) GetNextToken(q,&q,extent,token);
3453  break;
3454  }
3455  if (LocaleCompare("pattern",token) == 0)
3456  {
3458  bounds;
3459 
3460  (void) GetNextToken(q,&q,extent,token);
3461  (void) CopyMagickString(name,token,MaxTextExtent);
3462  (void) GetNextToken(q,&q,extent,token);
3463  bounds.x=CastDoubleToLong(ceil(GetDrawValue(token,
3464  &next_token)-0.5));
3465  if (token == next_token)
3466  ThrowPointExpectedException(image,token);
3467  (void) GetNextToken(q,&q,extent,token);
3468  if (*token == ',')
3469  (void) GetNextToken(q,&q,extent,token);
3470  bounds.y=CastDoubleToLong(ceil(GetDrawValue(token,
3471  &next_token)-0.5));
3472  if (token == next_token)
3473  ThrowPointExpectedException(image,token);
3474  (void) GetNextToken(q,&q,extent,token);
3475  if (*token == ',')
3476  (void) GetNextToken(q,&q,extent,token);
3477  bounds.width=(size_t) floor(GetDrawValue(token,&next_token)+
3478  0.5);
3479  if (token == next_token)
3480  ThrowPointExpectedException(image,token);
3481  (void) GetNextToken(q,&q,extent,token);
3482  if (*token == ',')
3483  (void) GetNextToken(q,&q,extent,token);
3484  bounds.height=(size_t) floor(GetDrawValue(token,&next_token)+
3485  0.5);
3486  if (token == next_token)
3487  ThrowPointExpectedException(image,token);
3488  for (p=q; *q != '\0'; )
3489  {
3490  if (GetNextToken(q,&q,extent,token) < 1)
3491  break;
3492  if (LocaleCompare(token,"pop") != 0)
3493  continue;
3494  (void) GetNextToken(q,(const char **) NULL,extent,token);
3495  if (LocaleCompare(token,"pattern") != 0)
3496  continue;
3497  break;
3498  }
3499  if ((q == (char *) NULL) || (p == (char *) NULL) || ((q-4) < p))
3500  {
3501  status=MagickFalse;
3502  break;
3503  }
3504  (void) CopyMagickString(token,p,(size_t) (q-p-4+1));
3505  (void) FormatLocaleString(key,MaxTextExtent,"%s",name);
3506  (void) SetImageArtifact(image,key,token);
3507  (void) FormatLocaleString(key,MaxTextExtent,"%s-geometry",name);
3508  (void) FormatLocaleString(geometry,MaxTextExtent,
3509  "%.20gx%.20g%+.20g%+.20g",(double) bounds.width,(double)
3510  bounds.height,(double) bounds.x,(double) bounds.y);
3511  (void) SetImageArtifact(image,key,geometry);
3512  (void) GetNextToken(q,&q,extent,token);
3513  break;
3514  }
3515  if (LocaleCompare("symbol",token) == 0)
3516  {
3517  symbolDepth++;
3518  graphic_context[n]->render=symbolDepth > 0 ? MagickFalse :
3519  MagickTrue;
3520  break;
3521  }
3522  status=MagickFalse;
3523  break;
3524  }
3525  status=MagickFalse;
3526  break;
3527  }
3528  case 'r':
3529  case 'R':
3530  {
3531  if (LocaleCompare("rectangle",keyword) == 0)
3532  {
3533  primitive_type=RectanglePrimitive;
3534  break;
3535  }
3536  if (LocaleCompare("rotate",keyword) == 0)
3537  {
3538  (void) GetNextToken(q,&q,extent,token);
3539  angle=GetDrawValue(token,&next_token);
3540  if (token == next_token)
3541  ThrowPointExpectedException(image,token);
3542  affine.sx=cos(DegreesToRadians(fmod((double) angle,360.0)));
3543  affine.rx=sin(DegreesToRadians(fmod((double) angle,360.0)));
3544  affine.ry=(-sin(DegreesToRadians(fmod((double) angle,360.0))));
3545  affine.sy=cos(DegreesToRadians(fmod((double) angle,360.0)));
3546  break;
3547  }
3548  if (LocaleCompare("roundRectangle",keyword) == 0)
3549  {
3550  primitive_type=RoundRectanglePrimitive;
3551  break;
3552  }
3553  status=MagickFalse;
3554  break;
3555  }
3556  case 's':
3557  case 'S':
3558  {
3559  if (LocaleCompare("scale",keyword) == 0)
3560  {
3561  (void) GetNextToken(q,&q,extent,token);
3562  affine.sx=GetDrawValue(token,&next_token);
3563  if (token == next_token)
3564  ThrowPointExpectedException(image,token);
3565  (void) GetNextToken(q,&q,extent,token);
3566  if (*token == ',')
3567  (void) GetNextToken(q,&q,extent,token);
3568  affine.sy=GetDrawValue(token,&next_token);
3569  if (token == next_token)
3570  ThrowPointExpectedException(image,token);
3571  break;
3572  }
3573  if (LocaleCompare("skewX",keyword) == 0)
3574  {
3575  (void) GetNextToken(q,&q,extent,token);
3576  angle=GetDrawValue(token,&next_token);
3577  if (token == next_token)
3578  ThrowPointExpectedException(image,token);
3579  affine.ry=sin(DegreesToRadians(angle));
3580  break;
3581  }
3582  if (LocaleCompare("skewY",keyword) == 0)
3583  {
3584  (void) GetNextToken(q,&q,extent,token);
3585  angle=GetDrawValue(token,&next_token);
3586  if (token == next_token)
3587  ThrowPointExpectedException(image,token);
3588  affine.rx=(-tan(DegreesToRadians(angle)/2.0));
3589  break;
3590  }
3591  if (LocaleCompare("stop-color",keyword) == 0)
3592  {
3593  GradientType
3594  type;
3595 
3596  PixelPacket
3597  stop_color;
3598 
3599  (void) GetNextToken(q,&q,extent,token);
3600  status&=QueryColorDatabase(token,&stop_color,&image->exception);
3601  type=LinearGradient;
3602  if (draw_info->gradient.type == RadialGradient)
3603  type=RadialGradient;
3604  (void) GradientImage(image,type,PadSpread,&start_color,&stop_color);
3605  start_color=stop_color;
3606  (void) GetNextToken(q,&q,extent,token);
3607  break;
3608  }
3609  if (LocaleCompare("stroke",keyword) == 0)
3610  {
3611  const char
3612  *mvg_class;
3613 
3614  (void) GetNextToken(q,&q,extent,token);
3615  if (graphic_context[n]->clip_path != MagickFalse)
3616  break;
3617  mvg_class=(const char *) GetValueFromSplayTree(macros,token);
3618  if (mvg_class != (const char *) NULL)
3619  {
3620  (void) DrawPatternPath(image,draw_info,mvg_class,
3621  &graphic_context[n]->stroke_pattern);
3622  break;
3623  }
3624  (void) FormatLocaleString(pattern,MaxTextExtent,"%s",token);
3625  if (GetImageArtifact(image,pattern) != (const char *) NULL)
3626  {
3627  (void) DrawPatternPath(image,draw_info,token,
3628  &graphic_context[n]->stroke_pattern);
3629  break;
3630  }
3631  status&=QueryColorDatabase(token,&graphic_context[n]->stroke,
3632  &image->exception);
3633  if (graphic_context[n]->stroke_opacity != OpaqueOpacity)
3634  graphic_context[n]->stroke.opacity=ClampToQuantum(
3635  graphic_context[n]->stroke_opacity);
3636  break;
3637  }
3638  if (LocaleCompare("stroke-antialias",keyword) == 0)
3639  {
3640  (void) GetNextToken(q,&q,extent,token);
3641  graphic_context[n]->stroke_antialias=StringToLong(token) != 0 ?
3642  MagickTrue : MagickFalse;
3643  break;
3644  }
3645  if (LocaleCompare("stroke-dasharray",keyword) == 0)
3646  {
3647  if (graphic_context[n]->dash_pattern != (double *) NULL)
3648  graphic_context[n]->dash_pattern=(double *)
3649  RelinquishMagickMemory(graphic_context[n]->dash_pattern);
3650  if (IsPoint(q) != MagickFalse)
3651  {
3652  const char
3653  *p;
3654 
3655  p=q;
3656  (void) GetNextToken(p,&p,extent,token);
3657  if (*token == ',')
3658  (void) GetNextToken(p,&p,extent,token);
3659  for (x=0; IsPoint(token) != MagickFalse; x++)
3660  {
3661  (void) GetNextToken(p,&p,extent,token);
3662  if (*token == ',')
3663  (void) GetNextToken(p,&p,extent,token);
3664  }
3665  graphic_context[n]->dash_pattern=(double *)
3666  AcquireQuantumMemory((size_t) (2*x+2),
3667  sizeof(*graphic_context[n]->dash_pattern));
3668  if (graphic_context[n]->dash_pattern == (double *) NULL)
3669  {
3670  (void) ThrowMagickException(&image->exception,
3671  GetMagickModule(),ResourceLimitError,
3672  "MemoryAllocationFailed","`%s'",image->filename);
3673  status=MagickFalse;
3674  break;
3675  }
3676  (void) memset(graphic_context[n]->dash_pattern,0,(size_t)
3677  (2*x+2)*sizeof(*graphic_context[n]->dash_pattern));
3678  for (j=0; j < x; j++)
3679  {
3680  (void) GetNextToken(q,&q,extent,token);
3681  if (*token == ',')
3682  (void) GetNextToken(q,&q,extent,token);
3683  graphic_context[n]->dash_pattern[j]=GetDrawValue(token,
3684  &next_token);
3685  if (token == next_token)
3686  ThrowPointExpectedException(image,token);
3687  if (graphic_context[n]->dash_pattern[j] <= 0.0)
3688  status=MagickFalse;
3689  }
3690  if ((x & 0x01) != 0)
3691  for ( ; j < (2*x); j++)
3692  graphic_context[n]->dash_pattern[j]=
3693  graphic_context[n]->dash_pattern[j-x];
3694  graphic_context[n]->dash_pattern[j]=0.0;
3695  break;
3696  }
3697  (void) GetNextToken(q,&q,extent,token);
3698  break;
3699  }
3700  if (LocaleCompare("stroke-dashoffset",keyword) == 0)
3701  {
3702  (void) GetNextToken(q,&q,extent,token);
3703  graphic_context[n]->dash_offset=GetDrawValue(token,&next_token);
3704  if (token == next_token)
3705  ThrowPointExpectedException(image,token);
3706  break;
3707  }
3708  if (LocaleCompare("stroke-linecap",keyword) == 0)
3709  {
3710  ssize_t
3711  linecap;
3712 
3713  (void) GetNextToken(q,&q,extent,token);
3714  linecap=ParseCommandOption(MagickLineCapOptions,MagickFalse,token);
3715  if (linecap == -1)
3716  {
3717  status=MagickFalse;
3718  break;
3719  }
3720  graphic_context[n]->linecap=(LineCap) linecap;
3721  break;
3722  }
3723  if (LocaleCompare("stroke-linejoin",keyword) == 0)
3724  {
3725  ssize_t
3726  linejoin;
3727 
3728  (void) GetNextToken(q,&q,extent,token);
3729  linejoin=ParseCommandOption(MagickLineJoinOptions,MagickFalse,
3730  token);
3731  if (linejoin == -1)
3732  {
3733  status=MagickFalse;
3734  break;
3735  }
3736  graphic_context[n]->linejoin=(LineJoin) linejoin;
3737  break;
3738  }
3739  if (LocaleCompare("stroke-miterlimit",keyword) == 0)
3740  {
3741  (void) GetNextToken(q,&q,extent,token);
3742  graphic_context[n]->miterlimit=StringToUnsignedLong(token);
3743  break;
3744  }
3745  if (LocaleCompare("stroke-opacity",keyword) == 0)
3746  {
3747  double
3748  opacity;
3749 
3750  (void) GetNextToken(q,&q,extent,token);
3751  if (graphic_context[n]->clip_path != MagickFalse)
3752  break;
3753  factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3754  opacity=MagickMin(MagickMax(factor*
3755  GetDrawValue(token,&next_token),0.0),1.0);
3756  if (token == next_token)
3757  ThrowPointExpectedException(image,token);
3758  if (graphic_context[n]->compliance == SVGCompliance)
3759  graphic_context[n]->stroke_opacity*=(1.0-opacity);
3760  else
3761  graphic_context[n]->stroke_opacity=(QuantumRange-
3762  graphic_context[n]->stroke_opacity)*(1.0-opacity);
3763  if (graphic_context[n]->stroke.opacity != TransparentOpacity)
3764  graphic_context[n]->stroke.opacity=(Quantum)
3765  graphic_context[n]->stroke_opacity;
3766  else
3767  graphic_context[n]->stroke.opacity=ClampToQuantum(QuantumRange*
3768  opacity);
3769  break;
3770  }
3771  if (LocaleCompare("stroke-width",keyword) == 0)
3772  {
3773  (void) GetNextToken(q,&q,extent,token);
3774  if (graphic_context[n]->clip_path != MagickFalse)
3775  break;
3776  graphic_context[n]->stroke_width=GetDrawValue(token,&next_token);
3777  if (token == next_token)
3778  ThrowPointExpectedException(image,token);
3779  break;
3780  }
3781  status=MagickFalse;
3782  break;
3783  }
3784  case 't':
3785  case 'T':
3786  {
3787  if (LocaleCompare("text",keyword) == 0)
3788  {
3789  primitive_type=TextPrimitive;
3790  cursor=0.0;
3791  break;
3792  }
3793  if (LocaleCompare("text-align",keyword) == 0)
3794  {
3795  ssize_t
3796  align;
3797 
3798  (void) GetNextToken(q,&q,extent,token);
3799  align=ParseCommandOption(MagickAlignOptions,MagickFalse,token);
3800  if (align == -1)
3801  {
3802  status=MagickFalse;
3803  break;
3804  }
3805  graphic_context[n]->align=(AlignType) align;
3806  break;
3807  }
3808  if (LocaleCompare("text-anchor",keyword) == 0)
3809  {
3810  ssize_t
3811  align;
3812 
3813  (void) GetNextToken(q,&q,extent,token);
3814  align=ParseCommandOption(MagickAlignOptions,MagickFalse,token);
3815  if (align == -1)
3816  {
3817  status=MagickFalse;
3818  break;
3819  }
3820  graphic_context[n]->align=(AlignType) align;
3821  break;
3822  }
3823  if (LocaleCompare("text-antialias",keyword) == 0)
3824  {
3825  (void) GetNextToken(q,&q,extent,token);
3826  graphic_context[n]->text_antialias=StringToLong(token) != 0 ?
3827  MagickTrue : MagickFalse;
3828  break;
3829  }
3830  if (LocaleCompare("text-undercolor",keyword) == 0)
3831  {
3832  (void) GetNextToken(q,&q,extent,token);
3833  status&=QueryColorDatabase(token,&graphic_context[n]->undercolor,
3834  &image->exception);
3835  break;
3836  }
3837  if (LocaleCompare("translate",keyword) == 0)
3838  {
3839  (void) GetNextToken(q,&q,extent,token);
3840  affine.tx=GetDrawValue(token,&next_token);
3841  if (token == next_token)
3842  ThrowPointExpectedException(image,token);
3843  (void) GetNextToken(q,&q,extent,token);
3844  if (*token == ',')
3845  (void) GetNextToken(q,&q,extent,token);
3846  affine.ty=GetDrawValue(token,&next_token);
3847  if (token == next_token)
3848  ThrowPointExpectedException(image,token);
3849  break;
3850  }
3851  status=MagickFalse;
3852  break;
3853  }
3854  case 'u':
3855  case 'U':
3856  {
3857  if (LocaleCompare("use",keyword) == 0)
3858  {
3859  const char
3860  *use;
3861 
3862  /*
3863  Get a macro from the MVG document, and "use" it here.
3864  */
3865  (void) GetNextToken(q,&q,extent,token);
3866  use=(const char *) GetValueFromSplayTree(macros,token);
3867  if (use != (const char *) NULL)
3868  {
3869  clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
3870  (void) CloneString(&clone_info->primitive,use);
3871  status=RenderMVGContent(image,clone_info,depth+1);
3872  clone_info=DestroyDrawInfo(clone_info);
3873  }
3874  break;
3875  }
3876  status=MagickFalse;
3877  break;
3878  }
3879  case 'v':
3880  case 'V':
3881  {
3882  if (LocaleCompare("viewbox",keyword) == 0)
3883  {
3884  (void) GetNextToken(q,&q,extent,token);
3885  graphic_context[n]->viewbox.x=CastDoubleToLong(ceil(
3886  GetDrawValue(token,&next_token)-0.5));
3887  if (token == next_token)
3888  ThrowPointExpectedException(image,token);
3889  (void) GetNextToken(q,&q,extent,token);
3890  if (*token == ',')
3891  (void) GetNextToken(q,&q,extent,token);
3892  graphic_context[n]->viewbox.y=CastDoubleToLong(ceil(
3893  GetDrawValue(token,&next_token)-0.5));
3894  if (token == next_token)
3895  ThrowPointExpectedException(image,token);
3896  (void) GetNextToken(q,&q,extent,token);
3897  if (*token == ',')
3898  (void) GetNextToken(q,&q,extent,token);
3899  graphic_context[n]->viewbox.width=(size_t) floor(GetDrawValue(
3900  token,&next_token)+0.5);
3901  if (token == next_token)
3902  ThrowPointExpectedException(image,token);
3903  (void) GetNextToken(q,&q,extent,token);
3904  if (*token == ',')
3905  (void) GetNextToken(q,&q,extent,token);
3906  graphic_context[n]->viewbox.height=(size_t) floor(GetDrawValue(
3907  token,&next_token)+0.5);
3908  if (token == next_token)
3909  ThrowPointExpectedException(image,token);
3910  break;
3911  }
3912  status=MagickFalse;
3913  break;
3914  }
3915  case 'w':
3916  case 'W':
3917  {
3918  if (LocaleCompare("word-spacing",keyword) == 0)
3919  {
3920  (void) GetNextToken(q,&q,extent,token);
3921  graphic_context[n]->interword_spacing=GetDrawValue(token,
3922  &next_token);
3923  if (token == next_token)
3924  ThrowPointExpectedException(image,token);
3925  break;
3926  }
3927  status=MagickFalse;
3928  break;
3929  }
3930  default:
3931  {
3932  status=MagickFalse;
3933  break;
3934  }
3935  }
3936  if (status == MagickFalse)
3937  break;
3938  if ((fabs(affine.sx-1.0) >= MagickEpsilon) ||
3939  (fabs(affine.rx) >= MagickEpsilon) || (fabs(affine.ry) >= MagickEpsilon) ||
3940  (fabs(affine.sy-1.0) >= MagickEpsilon) ||
3941  (fabs(affine.tx) >= MagickEpsilon) || (fabs(affine.ty) >= MagickEpsilon))
3942  {
3943  graphic_context[n]->affine.sx=current.sx*affine.sx+current.ry*affine.rx;
3944  graphic_context[n]->affine.rx=current.rx*affine.sx+current.sy*affine.rx;
3945  graphic_context[n]->affine.ry=current.sx*affine.ry+current.ry*affine.sy;
3946  graphic_context[n]->affine.sy=current.rx*affine.ry+current.sy*affine.sy;
3947  graphic_context[n]->affine.tx=current.sx*affine.tx+current.ry*affine.ty+
3948  current.tx;
3949  graphic_context[n]->affine.ty=current.rx*affine.tx+current.sy*affine.ty+
3950  current.ty;
3951  }
3952  if (primitive_type == UndefinedPrimitive)
3953  {
3954  if ((draw_info->debug != MagickFalse) && (q > p))
3955  (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int)
3956  (q-p-1),p);
3957  continue;
3958  }
3959  /*
3960  Parse the primitive attributes.
3961  */
3962  for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
3963  if (primitive_info[i].text != (char *) NULL)
3964  primitive_info[i].text=DestroyString(primitive_info[i].text);
3965  i=0;
3966  mvg_info.offset=i;
3967  j=0;
3968  primitive_info[0].point.x=0.0;
3969  primitive_info[0].point.y=0.0;
3970  primitive_info[0].coordinates=0;
3971  primitive_info[0].method=FloodfillMethod;
3972  primitive_info[0].closed_subpath=MagickFalse;
3973  for (x=0; *q != '\0'; x++)
3974  {
3975  /*
3976  Define points.
3977  */
3978  if (IsPoint(q) == MagickFalse)
3979  break;
3980  (void) GetNextToken(q,&q,extent,token);
3981  point.x=GetDrawValue(token,&next_token);
3982  if (token == next_token)
3983  ThrowPointExpectedException(image,token);
3984  (void) GetNextToken(q,&q,extent,token);
3985  if (*token == ',')
3986  (void) GetNextToken(q,&q,extent,token);
3987  point.y=GetDrawValue(token,&next_token);
3988  if (token == next_token)
3989  ThrowPointExpectedException(image,token);
3990  (void) GetNextToken(q,(const char **) NULL,extent,token);
3991  if (*token == ',')
3992  (void) GetNextToken(q,&q,extent,token);
3993  primitive_info[i].primitive=primitive_type;
3994  primitive_info[i].point=point;
3995  primitive_info[i].coordinates=0;
3996  primitive_info[i].method=FloodfillMethod;
3997  primitive_info[i].closed_subpath=MagickFalse;
3998  i++;
3999  mvg_info.offset=i;
4000  if (i < (ssize_t) number_points)
4001  continue;
4002  status&=CheckPrimitiveExtent(&mvg_info,(double) number_points);
4003  primitive_info=(*mvg_info.primitive_info);
4004  }
4005  if (status == MagickFalse)
4006  break;
4007  if (primitive_info[j].text != (char *) NULL)
4008  primitive_info[j].text=DestroyString(primitive_info[j].text);
4009  primitive_info[j].primitive=primitive_type;
4010  primitive_info[j].coordinates=(size_t) x;
4011  primitive_info[j].method=FloodfillMethod;
4012  primitive_info[j].closed_subpath=MagickFalse;
4013  /*
4014  Circumscribe primitive within a circle.
4015  */
4016  bounds.x1=primitive_info[j].point.x;
4017  bounds.y1=primitive_info[j].point.y;
4018  bounds.x2=primitive_info[j].point.x;
4019  bounds.y2=primitive_info[j].point.y;
4020  for (k=1; k < (ssize_t) primitive_info[j].coordinates; k++)
4021  {
4022  point=primitive_info[j+k].point;
4023  if (point.x < bounds.x1)
4024  bounds.x1=point.x;
4025  if (point.y < bounds.y1)
4026  bounds.y1=point.y;
4027  if (point.x > bounds.x2)
4028  bounds.x2=point.x;
4029  if (point.y > bounds.y2)
4030  bounds.y2=point.y;
4031  }
4032  /*
4033  Speculate how many points our primitive might consume.
4034  */
4035  coordinates=(double) primitive_info[j].coordinates;
4036  switch (primitive_type)
4037  {
4038  case RectanglePrimitive:
4039  {
4040  coordinates*=5.0;
4041  break;
4042  }
4043  case RoundRectanglePrimitive:
4044  {
4045  double
4046  alpha,
4047  beta,
4048  radius;
4049 
4050  alpha=bounds.x2-bounds.x1;
4051  beta=bounds.y2-bounds.y1;
4052  radius=hypot(alpha,beta);
4053  coordinates*=5.0;
4054  coordinates+=2.0*((size_t) ceil((double) MagickPI*radius))+6.0*
4055  BezierQuantum+360.0;
4056  break;
4057  }
4058  case BezierPrimitive:
4059  {
4060  coordinates=(BezierQuantum*(double) primitive_info[j].coordinates);
4061  break;
4062  }
4063  case PathPrimitive:
4064  {
4065  char
4066  *s,
4067  *t;
4068 
4069  (void) GetNextToken(q,&q,extent,token);
4070  coordinates=1.0;
4071  t=token;
4072  for (s=token; *s != '\0'; s=t)
4073  {
4074  double
4075  value;
4076 
4077  value=GetDrawValue(s,&t);
4078  (void) value;
4079  if (s == t)
4080  {
4081  t++;
4082  continue;
4083  }
4084  coordinates++;
4085  }
4086  for (s=token; *s != '\0'; s++)
4087  if (strspn(s,"AaCcQqSsTt") != 0)
4088  coordinates+=(20.0*BezierQuantum)+360.0;
4089  break;
4090  }
4091  default:
4092  break;
4093  }
4094  if (status == MagickFalse)
4095  break;
4096  if (((size_t) (i+coordinates)) >= number_points)
4097  {
4098  /*
4099  Resize based on speculative points required by primitive.
4100  */
4101  number_points+=coordinates+1;
4102  if (number_points < (size_t) coordinates)
4103  {
4104  (void) ThrowMagickException(&image->exception,GetMagickModule(),
4105  ResourceLimitError,"MemoryAllocationFailed","`%s'",
4106  image->filename);
4107  break;
4108  }
4109  mvg_info.offset=i;
4110  status&=CheckPrimitiveExtent(&mvg_info,(double) number_points);
4111  primitive_info=(*mvg_info.primitive_info);
4112  }
4113  status&=CheckPrimitiveExtent(&mvg_info,PrimitiveExtentPad);
4114  primitive_info=(*mvg_info.primitive_info);
4115  if (status == MagickFalse)
4116  break;
4117  mvg_info.offset=j;
4118  switch (primitive_type)
4119  {
4120  case PointPrimitive:
4121  default:
4122  {
4123  if (primitive_info[j].coordinates != 1)
4124  {
4125  status=MagickFalse;
4126  break;
4127  }
4128  status&=TracePoint(primitive_info+j,primitive_info[j].point);
4129  primitive_info=(*mvg_info.primitive_info);
4130  i=(ssize_t) (j+primitive_info[j].coordinates);
4131  break;
4132  }
4133  case LinePrimitive:
4134  {
4135  if (primitive_info[j].coordinates != 2)
4136  {
4137  status=MagickFalse;
4138  break;
4139  }
4140  status&=TraceLine(primitive_info+j,primitive_info[j].point,
4141  primitive_info[j+1].point);
4142  primitive_info=(*mvg_info.primitive_info);
4143  i=(ssize_t) (j+primitive_info[j].coordinates);
4144  break;
4145  }
4146  case RectanglePrimitive:
4147  {
4148  if (primitive_info[j].coordinates != 2)
4149  {
4150  status=MagickFalse;
4151  break;
4152  }
4153  status&=TraceRectangle(primitive_info+j,primitive_info[j].point,
4154  primitive_info[j+1].point);
4155  primitive_info=(*mvg_info.primitive_info);
4156  i=(ssize_t) (j+primitive_info[j].coordinates);
4157  break;
4158  }
4159  case RoundRectanglePrimitive:
4160  {
4161  if (primitive_info[j].coordinates != 3)
4162  {
4163  status=MagickFalse;
4164  break;
4165  }
4166  if ((primitive_info[j+2].point.x < 0.0) ||
4167  (primitive_info[j+2].point.y < 0.0))
4168  {
4169  status=MagickFalse;
4170  break;
4171  }
4172  if ((primitive_info[j+1].point.x-primitive_info[j].point.x) < 0.0)
4173  {
4174  status=MagickFalse;
4175  break;
4176  }
4177  if ((primitive_info[j+1].point.y-primitive_info[j].point.y) < 0.0)
4178  {
4179  status=MagickFalse;
4180  break;
4181  }
4182  status&=TraceRoundRectangle(&mvg_info,primitive_info[j].point,
4183  primitive_info[j+1].point,primitive_info[j+2].point);
4184  primitive_info=(*mvg_info.primitive_info);
4185  i=(ssize_t) (j+primitive_info[j].coordinates);
4186  break;
4187  }
4188  case ArcPrimitive:
4189  {
4190  if (primitive_info[j].coordinates != 3)
4191  {
4192  status=MagickFalse;
4193  break;
4194  }
4195  status&=TraceArc(&mvg_info,primitive_info[j].point,
4196  primitive_info[j+1].point,primitive_info[j+2].point);
4197  primitive_info=(*mvg_info.primitive_info);
4198  i=(ssize_t) (j+primitive_info[j].coordinates);
4199  break;
4200  }
4201  case EllipsePrimitive:
4202  {
4203  if (primitive_info[j].coordinates != 3)
4204  {
4205  status=MagickFalse;
4206  break;
4207  }
4208  if ((primitive_info[j+1].point.x < 0.0) ||
4209  (primitive_info[j+1].point.y < 0.0))
4210  {
4211  status=MagickFalse;
4212  break;
4213  }
4214  status&=TraceEllipse(&mvg_info,primitive_info[j].point,
4215  primitive_info[j+1].point,primitive_info[j+2].point);
4216  primitive_info=(*mvg_info.primitive_info);
4217  i=(ssize_t) (j+primitive_info[j].coordinates);
4218  break;
4219  }
4220  case CirclePrimitive:
4221  {
4222  if (primitive_info[j].coordinates != 2)
4223  {
4224  status=MagickFalse;
4225  break;
4226  }
4227  status&=TraceCircle(&mvg_info,primitive_info[j].point,
4228  primitive_info[j+1].point);
4229  primitive_info=(*mvg_info.primitive_info);
4230  i=(ssize_t) (j+primitive_info[j].coordinates);
4231  break;
4232  }
4233  case PolylinePrimitive:
4234  {
4235  if (primitive_info[j].coordinates < 1)
4236  {
4237  status=MagickFalse;
4238  break;
4239  }
4240  break;
4241  }
4242  case PolygonPrimitive:
4243  {
4244  if (primitive_info[j].coordinates < 3)
4245  {
4246  status=MagickFalse;
4247  break;
4248  }
4249  primitive_info[i]=primitive_info[j];
4250  primitive_info[i].coordinates=0;
4251  primitive_info[j].coordinates++;
4252  primitive_info[j].closed_subpath=MagickTrue;
4253  i++;
4254  break;
4255  }
4256  case BezierPrimitive:
4257  {
4258  if (primitive_info[j].coordinates < 3)
4259  {
4260  status=MagickFalse;
4261  break;
4262  }
4263  status&=TraceBezier(&mvg_info,primitive_info[j].coordinates);
4264  primitive_info=(*mvg_info.primitive_info);
4265  i=(ssize_t) (j+primitive_info[j].coordinates);
4266  break;
4267  }
4268  case PathPrimitive:
4269  {
4270  coordinates=(double) TracePath(image,&mvg_info,token);
4271  primitive_info=(*mvg_info.primitive_info);
4272  if (coordinates < 0.0)
4273  {
4274  status=MagickFalse;
4275  break;
4276  }
4277  i=(ssize_t) (j+coordinates);
4278  break;
4279  }
4280  case ColorPrimitive:
4281  case MattePrimitive:
4282  {
4283  ssize_t
4284  method;
4285 
4286  if (primitive_info[j].coordinates != 1)
4287  {
4288  status=MagickFalse;
4289  break;
4290  }
4291  (void) GetNextToken(q,&q,extent,token);
4292  method=ParseCommandOption(MagickMethodOptions,MagickFalse,token);
4293  if (method == -1)
4294  {
4295  status=MagickFalse;
4296  break;
4297  }
4298  primitive_info[j].method=(PaintMethod) method;
4299  break;
4300  }
4301  case TextPrimitive:
4302  {
4303  char
4304  geometry[MagickPathExtent];
4305 
4306  if (primitive_info[j].coordinates != 1)
4307  {
4308  status=MagickFalse;
4309  break;
4310  }
4311  if (*token != ',')
4312  (void) GetNextToken(q,&q,extent,token);
4313  (void) CloneString(&primitive_info[j].text,token);
4314  /*
4315  Compute text cursor offset.
4316  */
4317  clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
4318  if ((fabs(mvg_info.point.x-primitive_info->point.x) < MagickEpsilon) &&
4319  (fabs(mvg_info.point.y-primitive_info->point.y) < MagickEpsilon))
4320  {
4321  mvg_info.point=primitive_info->point;
4322  primitive_info->point.x+=cursor;
4323  }
4324  else
4325  {
4326  mvg_info.point=primitive_info->point;
4327  cursor=0.0;
4328  }
4329  (void) FormatLocaleString(geometry,MagickPathExtent,"%+f%+f",
4330  primitive_info->point.x,primitive_info->point.y);
4331  clone_info->render=MagickFalse;
4332  clone_info->text=AcquireString(token);
4333  status&=GetTypeMetrics(image,clone_info,&metrics);
4334  clone_info=DestroyDrawInfo(clone_info);
4335  cursor+=metrics.width;
4336  if (graphic_context[n]->compliance != SVGCompliance)
4337  cursor=0.0;
4338  break;
4339  }
4340  case ImagePrimitive:
4341  {
4342  if (primitive_info[j].coordinates != 2)
4343  {
4344  status=MagickFalse;
4345  break;
4346  }
4347  (void) GetNextToken(q,&q,extent,token);
4348  (void) CloneString(&primitive_info[j].text,token);
4349  break;
4350  }
4351  }
4352  mvg_info.offset=i;
4353  if (status == 0)
4354  break;
4355  primitive_info[i].primitive=UndefinedPrimitive;
4356  if ((draw_info->debug != MagickFalse) && (q > p))
4357  (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int) (q-p),p);
4358  /*
4359  Sanity check.
4360  */
4361  status&=CheckPrimitiveExtent(&mvg_info,ExpandAffine(
4362  &graphic_context[n]->affine));
4363  primitive_info=(*mvg_info.primitive_info);
4364  if (status == 0)
4365  break;
4366  status&=CheckPrimitiveExtent(&mvg_info,(double)
4367  graphic_context[n]->stroke_width);
4368  primitive_info=(*mvg_info.primitive_info);
4369  if (status == 0)
4370  break;
4371  if (i == 0)
4372  continue;
4373  /*
4374  Transform points.
4375  */
4376  for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4377  {
4378  point=primitive_info[i].point;
4379  primitive_info[i].point.x=graphic_context[n]->affine.sx*point.x+
4380  graphic_context[n]->affine.ry*point.y+graphic_context[n]->affine.tx;
4381  primitive_info[i].point.y=graphic_context[n]->affine.rx*point.x+
4382  graphic_context[n]->affine.sy*point.y+graphic_context[n]->affine.ty;
4383  point=primitive_info[i].point;
4384  if (point.x < graphic_context[n]->bounds.x1)
4385  graphic_context[n]->bounds.x1=point.x;
4386  if (point.y < graphic_context[n]->bounds.y1)
4387  graphic_context[n]->bounds.y1=point.y;
4388  if (point.x > graphic_context[n]->bounds.x2)
4389  graphic_context[n]->bounds.x2=point.x;
4390  if (point.y > graphic_context[n]->bounds.y2)
4391  graphic_context[n]->bounds.y2=point.y;
4392  if (primitive_info[i].primitive == ImagePrimitive)
4393  break;
4394  if (i >= (ssize_t) number_points)
4395  ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
4396  }
4397  if (graphic_context[n]->render != MagickFalse)
4398  {
4399  if ((n != 0) && (graphic_context[n]->compliance != SVGCompliance) &&
4400  (graphic_context[n]->clip_mask != (char *) NULL) &&
4401  (LocaleCompare(graphic_context[n]->clip_mask,
4402  graphic_context[n-1]->clip_mask) != 0))
4403  {
4404  const char
4405  *clip_path;
4406 
4407  clip_path=(const char *) GetValueFromSplayTree(macros,
4408  graphic_context[n]->clip_mask);
4409  if (clip_path != (const char *) NULL)
4410  (void) SetImageArtifact(image,graphic_context[n]->clip_mask,
4411  clip_path);
4412  status&=DrawClipPath(image,graphic_context[n],
4413  graphic_context[n]->clip_mask);
4414  }
4415  status&=DrawPrimitive(image,graphic_context[n],primitive_info);
4416  }
4417  proceed=SetImageProgress(image,RenderImageTag,q-primitive,(MagickSizeType)
4418  primitive_extent);
4419  if (proceed == MagickFalse)
4420  break;
4421  if (status == 0)
4422  break;
4423  }
4424  if (draw_info->debug != MagickFalse)
4425  (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end draw-image");
4426  /*
4427  Relinquish resources.
4428  */
4429  macros=DestroySplayTree(macros);
4430  token=DestroyString(token);
4431  if (primitive_info != (PrimitiveInfo *) NULL)
4432  {
4433  for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4434  if (primitive_info[i].text != (char *) NULL)
4435  primitive_info[i].text=DestroyString(primitive_info[i].text);
4436  primitive_info=(PrimitiveInfo *) RelinquishMagickMemory(primitive_info);
4437  }
4438  primitive=DestroyString(primitive);
4439  for ( ; n >= 0; n--)
4440  graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
4441  graphic_context=(DrawInfo **) RelinquishMagickMemory(graphic_context);
4442  if (status == MagickFalse)
4443  ThrowBinaryImageException(DrawError,
4444  "NonconformingDrawingPrimitiveDefinition",keyword);
4445  return(status != 0 ? MagickTrue : MagickFalse);
4446 }
4447 
4448 MagickExport MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info)
4449 {
4450  return(RenderMVGContent(image,draw_info,0));
4451 }
4452 
4453 /*
4454 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4455 % %
4456 % %
4457 % %
4458 % D r a w P a t t e r n P a t h %
4459 % %
4460 % %
4461 % %
4462 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4463 %
4464 % DrawPatternPath() draws a pattern.
4465 %
4466 % The format of the DrawPatternPath method is:
4467 %
4468 % MagickBooleanType DrawPatternPath(Image *image,const DrawInfo *draw_info,
4469 % const char *name,Image **pattern)
4470 %
4471 % A description of each parameter follows:
4472 %
4473 % o image: the image.
4474 %
4475 % o draw_info: the draw info.
4476 %
4477 % o name: the pattern name.
4478 %
4479 % o image: the image.
4480 %
4481 */
4482 MagickExport MagickBooleanType DrawPatternPath(Image *image,
4483  const DrawInfo *draw_info,const char *name,Image **pattern)
4484 {
4485  char
4486  property[MaxTextExtent];
4487 
4488  const char
4489  *geometry,
4490  *path,
4491  *type;
4492 
4493  DrawInfo
4494  *clone_info;
4495 
4496  ImageInfo
4497  *image_info;
4498 
4499  MagickBooleanType
4500  status;
4501 
4502  assert(image != (Image *) NULL);
4503  assert(image->signature == MagickCoreSignature);
4504  assert(draw_info != (const DrawInfo *) NULL);
4505  if (IsEventLogging() != MagickFalse)
4506  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4507  assert(name != (const char *) NULL);
4508  (void) FormatLocaleString(property,MaxTextExtent,"%s",name);
4509  path=GetImageArtifact(image,property);
4510  if (path == (const char *) NULL)
4511  return(MagickFalse);
4512  (void) FormatLocaleString(property,MaxTextExtent,"%s-geometry",name);
4513  geometry=GetImageArtifact(image,property);
4514  if (geometry == (const char *) NULL)
4515  return(MagickFalse);
4516  if ((*pattern) != (Image *) NULL)
4517  *pattern=DestroyImage(*pattern);
4518  image_info=AcquireImageInfo();
4519  image_info->size=AcquireString(geometry);
4520  *pattern=AcquireImage(image_info);
4521  image_info=DestroyImageInfo(image_info);
4522  (void) QueryColorDatabase("#00000000",&(*pattern)->background_color,
4523  &image->exception);
4524  (void) SetImageBackgroundColor(*pattern);
4525  if (draw_info->debug != MagickFalse)
4526  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
4527  "begin pattern-path %s %s",name,geometry);
4528  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
4529  if (clone_info->fill_pattern != (Image *) NULL)
4530  clone_info->fill_pattern=DestroyImage(clone_info->fill_pattern);
4531  if (clone_info->stroke_pattern != (Image *) NULL)
4532  clone_info->stroke_pattern=DestroyImage(clone_info->stroke_pattern);
4533  (void) FormatLocaleString(property,MaxTextExtent,"%s-type",name);
4534  type=GetImageArtifact(image,property);
4535  if (type != (const char *) NULL)
4536  clone_info->gradient.type=(GradientType) ParseCommandOption(
4537  MagickGradientOptions,MagickFalse,type);
4538  (void) CloneString(&clone_info->primitive,path);
4539  status=RenderMVGContent(*pattern,clone_info,0);
4540  clone_info=DestroyDrawInfo(clone_info);
4541  if (draw_info->debug != MagickFalse)
4542  (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end pattern-path");
4543  return(status);
4544 }
4545 
4546 /*
4547 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4548 % %
4549 % %
4550 % %
4551 + D r a w P o l y g o n P r i m i t i v e %
4552 % %
4553 % %
4554 % %
4555 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4556 %
4557 % DrawPolygonPrimitive() draws a polygon on the image.
4558 %
4559 % The format of the DrawPolygonPrimitive method is:
4560 %
4561 % MagickBooleanType DrawPolygonPrimitive(Image *image,
4562 % const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
4563 %
4564 % A description of each parameter follows:
4565 %
4566 % o image: the image.
4567 %
4568 % o draw_info: the draw info.
4569 %
4570 % o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
4571 %
4572 */
4573 
4574 static PolygonInfo **DestroyPolygonTLS(PolygonInfo **polygon_info)
4575 {
4576  ssize_t
4577  i;
4578 
4579  assert(polygon_info != (PolygonInfo **) NULL);
4580  for (i=0; i < (ssize_t) GetMagickResourceLimit(ThreadResource); i++)
4581  if (polygon_info[i] != (PolygonInfo *) NULL)
4582  polygon_info[i]=DestroyPolygonInfo(polygon_info[i]);
4583  polygon_info=(PolygonInfo **) RelinquishMagickMemory(polygon_info);
4584  return(polygon_info);
4585 }
4586 
4587 static PolygonInfo **AcquirePolygonTLS(const DrawInfo *draw_info,
4588  const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
4589 {
4590  PathInfo
4591  *magick_restrict path_info;
4592 
4593  PolygonInfo
4594  **polygon_info;
4595 
4596  size_t
4597  number_threads;
4598 
4599  number_threads=(size_t) GetMagickResourceLimit(ThreadResource);
4600  polygon_info=(PolygonInfo **) AcquireQuantumMemory(number_threads,
4601  sizeof(*polygon_info));
4602  if (polygon_info == (PolygonInfo **) NULL)
4603  {
4604  (void) ThrowMagickException(exception,GetMagickModule(),
4605  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4606  return((PolygonInfo **) NULL);
4607  }
4608  (void) memset(polygon_info,0,number_threads*sizeof(*polygon_info));
4609  path_info=ConvertPrimitiveToPath(draw_info,primitive_info,exception);
4610  if (path_info == (PathInfo *) NULL)
4611  return(DestroyPolygonTLS(polygon_info));
4612  polygon_info[0]=ConvertPathToPolygon(path_info,exception);
4613  if (polygon_info[0] == (PolygonInfo *) NULL)
4614  {
4615  (void) ThrowMagickException(exception,GetMagickModule(),
4616  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4617  return(DestroyPolygonTLS(polygon_info));
4618  }
4619  path_info=(PathInfo *) RelinquishMagickMemory(path_info);
4620  return(polygon_info);
4621 }
4622 
4623 static MagickBooleanType AcquirePolygonEdgesTLS(PolygonInfo **polygon_info,
4624  const size_t number_threads,ExceptionInfo *exception)
4625 {
4626  ssize_t
4627  i;
4628 
4629  for (i=1; i < (ssize_t) number_threads; i++)
4630  {
4631  EdgeInfo
4632  *edge_info;
4633 
4634  ssize_t
4635  j;
4636 
4637  polygon_info[i]=(PolygonInfo *) AcquireMagickMemory(
4638  sizeof(*polygon_info[i]));
4639  if (polygon_info[i] == (PolygonInfo *) NULL)
4640  {
4641  (void) ThrowMagickException(exception,GetMagickModule(),
4642  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4643  return(MagickFalse);
4644  }
4645  polygon_info[i]->number_edges=0;
4646  edge_info=polygon_info[0]->edges;
4647  polygon_info[i]->edges=(EdgeInfo *) AcquireQuantumMemory(
4648  polygon_info[0]->number_edges,sizeof(*edge_info));
4649  if (polygon_info[i]->edges == (EdgeInfo *) NULL)
4650  {
4651  (void) ThrowMagickException(exception,GetMagickModule(),
4652  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4653  return(MagickFalse);
4654  }
4655  (void) memcpy(polygon_info[i]->edges,edge_info,
4656  polygon_info[0]->number_edges*sizeof(*edge_info));
4657  for (j=0; j < (ssize_t) polygon_info[i]->number_edges; j++)
4658  polygon_info[i]->edges[j].points=(PointInfo *) NULL;
4659  polygon_info[i]->number_edges=polygon_info[0]->number_edges;
4660  for (j=0; j < (ssize_t) polygon_info[i]->number_edges; j++)
4661  {
4662  edge_info=polygon_info[0]->edges+j;
4663  polygon_info[i]->edges[j].points=(PointInfo *) AcquireQuantumMemory(
4664  edge_info->number_points,sizeof(*edge_info));
4665  if (polygon_info[i]->edges[j].points == (PointInfo *) NULL)
4666  {
4667  (void) ThrowMagickException(exception,GetMagickModule(),
4668  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4669  return(MagickFalse);
4670  }
4671  (void) memcpy(polygon_info[i]->edges[j].points,edge_info->points,
4672  edge_info->number_points*sizeof(*edge_info->points));
4673  }
4674  }
4675  return(MagickTrue);
4676 }
4677 
4678 static size_t DestroyEdge(PolygonInfo *polygon_info,const ssize_t edge)
4679 {
4680  assert(edge < (ssize_t) polygon_info->number_edges);
4681  polygon_info->edges[edge].points=(PointInfo *) RelinquishMagickMemory(
4682  polygon_info->edges[edge].points);
4683  polygon_info->number_edges--;
4684  if (edge < (ssize_t) polygon_info->number_edges)
4685  (void) memmove(polygon_info->edges+edge,polygon_info->edges+edge+1,
4686  (size_t) (polygon_info->number_edges-edge)*sizeof(*polygon_info->edges));
4687  return(polygon_info->number_edges);
4688 }
4689 
4690 static double GetOpacityPixel(PolygonInfo *polygon_info,const double mid,
4691  const MagickBooleanType fill,const FillRule fill_rule,const ssize_t x,
4692  const ssize_t y,double *stroke_opacity)
4693 {
4694  double
4695  alpha,
4696  beta,
4697  distance,
4698  subpath_opacity;
4699 
4700  PointInfo
4701  delta;
4702 
4703  EdgeInfo
4704  *p;
4705 
4706  const PointInfo
4707  *q;
4708 
4709  ssize_t
4710  i;
4711 
4712  ssize_t
4713  j,
4714  winding_number;
4715 
4716  /*
4717  Compute fill & stroke opacity for this (x,y) point.
4718  */
4719  *stroke_opacity=0.0;
4720  subpath_opacity=0.0;
4721  p=polygon_info->edges;
4722  for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4723  {
4724  if ((double) y <= (p->bounds.y1-mid-0.5))
4725  break;
4726  if ((double) y > (p->bounds.y2+mid+0.5))
4727  {
4728  p--;
4729  (void) DestroyEdge(polygon_info,j--);
4730  continue;
4731  }
4732  if (((double) x <= (p->bounds.x1-mid-0.5)) ||
4733  ((double) x > (p->bounds.x2+mid+0.5)))
4734  continue;
4735  i=(ssize_t) MagickMax((double) p->highwater,1.0);
4736  for ( ; i < (ssize_t) p->number_points; i++)
4737  {
4738  if ((double) y <= (p->points[i-1].y-mid-0.5))
4739  break;
4740  if ((double) y > (p->points[i].y+mid+0.5))
4741  continue;
4742  if (p->scanline != (double) y)
4743  {
4744  p->scanline=(double) y;
4745  p->highwater=(size_t) i;
4746  }
4747  /*
4748  Compute distance between a point and an edge.
4749  */
4750  q=p->points+i-1;
4751  delta.x=(q+1)->x-q->x;
4752  delta.y=(q+1)->y-q->y;
4753  beta=delta.x*(x-q->x)+delta.y*(y-q->y);
4754  if (beta <= 0.0)
4755  {
4756  delta.x=(double) x-q->x;
4757  delta.y=(double) y-q->y;
4758  distance=delta.x*delta.x+delta.y*delta.y;
4759  }
4760  else
4761  {
4762  alpha=delta.x*delta.x+delta.y*delta.y;
4763  if (beta >= alpha)
4764  {
4765  delta.x=(double) x-(q+1)->x;
4766  delta.y=(double) y-(q+1)->y;
4767  distance=delta.x*delta.x+delta.y*delta.y;
4768  }
4769  else
4770  {
4771  alpha=PerceptibleReciprocal(alpha);
4772  beta=delta.x*(y-q->y)-delta.y*(x-q->x);
4773  distance=alpha*beta*beta;
4774  }
4775  }
4776  /*
4777  Compute stroke & subpath opacity.
4778  */
4779  beta=0.0;
4780  if (p->ghostline == MagickFalse)
4781  {
4782  alpha=mid+0.5;
4783  if ((*stroke_opacity < 1.0) &&
4784  (distance <= ((alpha+0.25)*(alpha+0.25))))
4785  {
4786  alpha=mid-0.5;
4787  if (distance <= ((alpha+0.25)*(alpha+0.25)))
4788  *stroke_opacity=1.0;
4789  else
4790  {
4791  beta=1.0;
4792  if (fabs(distance-1.0) >= MagickEpsilon)
4793  beta=sqrt((double) distance);
4794  alpha=beta-mid-0.5;
4795  if (*stroke_opacity < ((alpha-0.25)*(alpha-0.25)))
4796  *stroke_opacity=(alpha-0.25)*(alpha-0.25);
4797  }
4798  }
4799  }
4800  if ((fill == MagickFalse) || (distance > 1.0) || (subpath_opacity >= 1.0))
4801  continue;
4802  if (distance <= 0.0)
4803  {
4804  subpath_opacity=1.0;
4805  continue;
4806  }
4807  if (distance > 1.0)
4808  continue;
4809  if (fabs(beta) < MagickEpsilon)
4810  {
4811  beta=1.0;
4812  if (fabs(distance-1.0) >= MagickEpsilon)
4813  beta=sqrt(distance);
4814  }
4815  alpha=beta-1.0;
4816  if (subpath_opacity < (alpha*alpha))
4817  subpath_opacity=alpha*alpha;
4818  }
4819  }
4820  /*
4821  Compute fill opacity.
4822  */
4823  if (fill == MagickFalse)
4824  return(0.0);
4825  if (subpath_opacity >= 1.0)
4826  return(1.0);
4827  /*
4828  Determine winding number.
4829  */
4830  winding_number=0;
4831  p=polygon_info->edges;
4832  for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4833  {
4834  if ((double) y <= p->bounds.y1)
4835  break;
4836  if (((double) y > p->bounds.y2) || ((double) x <= p->bounds.x1))
4837  continue;
4838  if ((double) x > p->bounds.x2)
4839  {
4840  winding_number+=p->direction != 0 ? 1 : -1;
4841  continue;
4842  }
4843  i=(ssize_t) MagickMax((double) p->highwater,1.0);
4844  for ( ; i < (ssize_t) (p->number_points-1); i++)
4845  if ((double) y <= p->points[i].y)
4846  break;
4847  q=p->points+i-1;
4848  if ((((q+1)->x-q->x)*(y-q->y)) <= (((q+1)->y-q->y)*(x-q->x)))
4849  winding_number+=p->direction != 0 ? 1 : -1;
4850  }
4851  if (fill_rule != NonZeroRule)
4852  {
4853  if ((MagickAbsoluteValue(winding_number) & 0x01) != 0)
4854  return(1.0);
4855  }
4856  else
4857  if (MagickAbsoluteValue(winding_number) != 0)
4858  return(1.0);
4859  return(subpath_opacity);
4860 }
4861 
4862 static MagickBooleanType DrawPolygonPrimitive(Image *image,
4863  const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
4864 {
4865  typedef struct _ExtentInfo
4866  {
4867  ssize_t
4868  x1,
4869  y1,
4870  x2,
4871  y2;
4872  } ExtentInfo;
4873 
4874  CacheView
4875  *image_view;
4876 
4877  const char
4878  *artifact;
4879 
4880  double
4881  mid;
4882 
4884  *exception;
4885 
4886  ExtentInfo
4887  poly_extent;
4888 
4889  MagickBooleanType
4890  fill,
4891  status;
4892 
4893  PolygonInfo
4894  **magick_restrict polygon_info;
4895 
4896  EdgeInfo
4897  *p;
4898 
4899  SegmentInfo
4900  bounds;
4901 
4902  size_t
4903  number_threads = 1;
4904 
4905  ssize_t
4906  i,
4907  y;
4908 
4909  assert(image != (Image *) NULL);
4910  assert(image->signature == MagickCoreSignature);
4911  assert(draw_info != (DrawInfo *) NULL);
4912  assert(draw_info->signature == MagickCoreSignature);
4913  assert(primitive_info != (PrimitiveInfo *) NULL);
4914  if (IsEventLogging() != MagickFalse)
4915  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4916  if (primitive_info->coordinates <= 1)
4917  return(MagickTrue);
4918  /*
4919  Compute bounding box.
4920  */
4921  polygon_info=AcquirePolygonTLS(draw_info,primitive_info,&image->exception);
4922  if (polygon_info == (PolygonInfo **) NULL)
4923  return(MagickFalse);
4924  if (draw_info->debug != MagickFalse)
4925  (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin draw-polygon");
4926  fill=(primitive_info->method == FillToBorderMethod) ||
4927  (primitive_info->method == FloodfillMethod) ? MagickTrue : MagickFalse;
4928  mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
4929  bounds=polygon_info[0]->edges[0].bounds;
4930  artifact=GetImageArtifact(image,"draw:render-bounding-rectangles");
4931  if (IsStringTrue(artifact) != MagickFalse)
4932  (void) DrawBoundingRectangles(image,draw_info,polygon_info[0]);
4933  for (i=1; i < (ssize_t) polygon_info[0]->number_edges; i++)
4934  {
4935  p=polygon_info[0]->edges+i;
4936  if (p->bounds.x1 < bounds.x1)
4937  bounds.x1=p->bounds.x1;
4938  if (p->bounds.y1 < bounds.y1)
4939  bounds.y1=p->bounds.y1;
4940  if (p->bounds.x2 > bounds.x2)
4941  bounds.x2=p->bounds.x2;
4942  if (p->bounds.y2 > bounds.y2)
4943  bounds.y2=p->bounds.y2;
4944  }
4945  bounds.x1-=(mid+1.0);
4946  bounds.y1-=(mid+1.0);
4947  bounds.x2+=(mid+1.0);
4948  bounds.y2+=(mid+1.0);
4949  if ((bounds.x1 >= (double) image->columns) ||
4950  (bounds.y1 >= (double) image->rows) ||
4951  (bounds.x2 <= 0.0) || (bounds.y2 <= 0.0))
4952  {
4953  polygon_info=DestroyPolygonTLS(polygon_info);
4954  return(MagickTrue); /* virtual polygon */
4955  }
4956  bounds.x1=bounds.x1 < 0.0 ? 0.0 : bounds.x1 >= (double) image->columns-1.0 ?
4957  (double) image->columns-1.0 : bounds.x1;
4958  bounds.y1=bounds.y1 < 0.0 ? 0.0 : bounds.y1 >= (double) image->rows-1.0 ?
4959  (double) image->rows-1.0 : bounds.y1;
4960  bounds.x2=bounds.x2 < 0.0 ? 0.0 : bounds.x2 >= (double) image->columns-1.0 ?
4961  (double) image->columns-1.0 : bounds.x2;
4962  bounds.y2=bounds.y2 < 0.0 ? 0.0 : bounds.y2 >= (double) image->rows-1.0 ?
4963  (double) image->rows-1.0 : bounds.y2;
4964  poly_extent.x1=CastDoubleToLong(ceil(bounds.x1-0.5));
4965  poly_extent.y1=CastDoubleToLong(ceil(bounds.y1-0.5));
4966  poly_extent.x2=CastDoubleToLong(floor(bounds.x2+0.5));
4967  poly_extent.y2=CastDoubleToLong(floor(bounds.y2+0.5));
4968  number_threads=GetMagickNumberThreads(image,image,poly_extent.y2-
4969  poly_extent.y1+1,1);
4970  status=AcquirePolygonEdgesTLS(polygon_info,number_threads,&image->exception);
4971  if (status == MagickFalse)
4972  {
4973  polygon_info=DestroyPolygonTLS(polygon_info);
4974  return(status);
4975  }
4976  status=MagickTrue;
4977  exception=(&image->exception);
4978  image_view=AcquireAuthenticCacheView(image,exception);
4979  if ((primitive_info->coordinates == 1) ||
4980  (polygon_info[0]->number_edges == 0))
4981  {
4982  /*
4983  Draw point.
4984  */
4985 #if defined(MAGICKCORE_OPENMP_SUPPORT)
4986  #pragma omp parallel for schedule(static) shared(status) \
4987  num_threads(number_threads)
4988 #endif
4989  for (y=poly_extent.y1; y <= poly_extent.y2; y++)
4990  {
4991  MagickBooleanType
4992  sync;
4993 
4994  PixelPacket
4995  *magick_restrict q;
4996 
4997  ssize_t
4998  x;
4999 
5000  if (status == MagickFalse)
5001  continue;
5002  x=poly_extent.x1;
5003  q=GetCacheViewAuthenticPixels(image_view,x,y,(size_t) (poly_extent.x2-
5004  x+1),1,exception);
5005  if (q == (PixelPacket *) NULL)
5006  {
5007  status=MagickFalse;
5008  continue;
5009  }
5010  for ( ; x <= poly_extent.x2; x++)
5011  {
5012  if ((x == CastDoubleToLong(ceil(primitive_info->point.x-0.5))) &&
5013  (y == CastDoubleToLong(ceil(primitive_info->point.y-0.5))))
5014  (void) GetFillColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,q);
5015  q++;
5016  }
5017  sync=SyncCacheViewAuthenticPixels(image_view,exception);
5018  if (sync == MagickFalse)
5019  status=MagickFalse;
5020  }
5021  image_view=DestroyCacheView(image_view);
5022  polygon_info=DestroyPolygonTLS(polygon_info);
5023  if (draw_info->debug != MagickFalse)
5024  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5025  " end draw-polygon");
5026  return(status);
5027  }
5028  /*
5029  Draw polygon or line.
5030  */
5031  poly_extent.y1=CastDoubleToLong(ceil(bounds.y1-0.5));
5032  poly_extent.y2=CastDoubleToLong(floor(bounds.y2+0.5));
5033 #if defined(MAGICKCORE_OPENMP_SUPPORT)
5034  #pragma omp parallel for schedule(static) shared(status) \
5035  num_threads(number_threads)
5036 #endif
5037  for (y=poly_extent.y1; y <= poly_extent.y2; y++)
5038  {
5039  const int
5040  id = GetOpenMPThreadId();
5041 
5042  PixelPacket
5043  fill_color,
5044  stroke_color;
5045 
5046  PixelPacket
5047  *magick_restrict q;
5048 
5049  ssize_t
5050  x;
5051 
5052  if (status == MagickFalse)
5053  continue;
5054  q=GetCacheViewAuthenticPixels(image_view,poly_extent.x1,y,(size_t)
5055  (poly_extent.x2-poly_extent.x1+1),1,exception);
5056  if (q == (PixelPacket *) NULL)
5057  {
5058  status=MagickFalse;
5059  continue;
5060  }
5061  for (x=poly_extent.x1; x <= poly_extent.x2; x++)
5062  {
5063  double
5064  fill_opacity,
5065  stroke_opacity;
5066 
5067  /*
5068  Fill and/or stroke.
5069  */
5070  fill_opacity=GetOpacityPixel(polygon_info[id],mid,fill,
5071  draw_info->fill_rule,x,y,&stroke_opacity);
5072  if (draw_info->stroke_antialias == MagickFalse)
5073  {
5074  fill_opacity=fill_opacity > 0.5 ? 1.0 : 0.0;
5075  stroke_opacity=stroke_opacity > 0.5 ? 1.0 : 0.0;
5076  }
5077  (void) GetFillColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,
5078  &fill_color);
5079  fill_opacity=(double) (QuantumRange-fill_opacity*(QuantumRange-
5080  fill_color.opacity));
5081  MagickCompositeOver(&fill_color,(MagickRealType) fill_opacity,q,
5082  (MagickRealType) q->opacity,q);
5083  (void) GetStrokeColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,
5084  &stroke_color);
5085  stroke_opacity=(double) (QuantumRange-stroke_opacity*(QuantumRange-
5086  stroke_color.opacity));
5087  MagickCompositeOver(&stroke_color,(MagickRealType) stroke_opacity,q,
5088  (MagickRealType) q->opacity,q);
5089  q++;
5090  }
5091  if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
5092  status=MagickFalse;
5093  }
5094  image_view=DestroyCacheView(image_view);
5095  polygon_info=DestroyPolygonTLS(polygon_info);
5096  if (draw_info->debug != MagickFalse)
5097  (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-polygon");
5098  return(status);
5099 }
5100 
5101 /*
5102 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5103 % %
5104 % %
5105 % %
5106 % D r a w P r i m i t i v e %
5107 % %
5108 % %
5109 % %
5110 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5111 %
5112 % DrawPrimitive() draws a primitive (line, rectangle, ellipse) on the image.
5113 %
5114 % The format of the DrawPrimitive method is:
5115 %
5116 % MagickBooleanType DrawPrimitive(Image *image,const DrawInfo *draw_info,
5117 % PrimitiveInfo *primitive_info)
5118 %
5119 % A description of each parameter follows:
5120 %
5121 % o image: the image.
5122 %
5123 % o draw_info: the draw info.
5124 %
5125 % o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
5126 %
5127 */
5128 static void LogPrimitiveInfo(const PrimitiveInfo *primitive_info)
5129 {
5130  const char
5131  *methods[] =
5132  {
5133  "point",
5134  "replace",
5135  "floodfill",
5136  "filltoborder",
5137  "reset",
5138  "?"
5139  };
5140 
5141  PointInfo
5142  p,
5143  q,
5144  point;
5145 
5146  ssize_t
5147  i,
5148  x;
5149 
5150  ssize_t
5151  coordinates,
5152  y;
5153 
5154  x=CastDoubleToLong(ceil(primitive_info->point.x-0.5));
5155  y=CastDoubleToLong(ceil(primitive_info->point.y-0.5));
5156  switch (primitive_info->primitive)
5157  {
5158  case PointPrimitive:
5159  {
5160  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5161  "PointPrimitive %.20g,%.20g %s",(double) x,(double) y,
5162  methods[primitive_info->method]);
5163  return;
5164  }
5165  case ColorPrimitive:
5166  {
5167  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5168  "ColorPrimitive %.20g,%.20g %s",(double) x,(double) y,
5169  methods[primitive_info->method]);
5170  return;
5171  }
5172  case MattePrimitive:
5173  {
5174  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5175  "MattePrimitive %.20g,%.20g %s",(double) x,(double) y,
5176  methods[primitive_info->method]);
5177  return;
5178  }
5179  case TextPrimitive:
5180  {
5181  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5182  "TextPrimitive %.20g,%.20g",(double) x,(double) y);
5183  return;
5184  }
5185  case ImagePrimitive:
5186  {
5187  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5188  "ImagePrimitive %.20g,%.20g",(double) x,(double) y);
5189  return;
5190  }
5191  default:
5192  break;
5193  }
5194  coordinates=0;
5195  p=primitive_info[0].point;
5196  q.x=(-1.0);
5197  q.y=(-1.0);
5198  for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
5199  {
5200  point=primitive_info[i].point;
5201  if (coordinates <= 0)
5202  {
5203  coordinates=(ssize_t) primitive_info[i].coordinates;
5204  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5205  " begin open (%.20g)",(double) coordinates);
5206  p=point;
5207  }
5208  point=primitive_info[i].point;
5209  if ((fabs(q.x-point.x) >= MagickEpsilon) ||
5210  (fabs(q.y-point.y) >= MagickEpsilon))
5211  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5212  " %.20g: %.18g,%.18g",(double) coordinates,point.x,point.y);
5213  else
5214  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5215  " %.20g: %g %g (duplicate)",(double) coordinates,point.x,point.y);
5216  q=point;
5217  coordinates--;
5218  if (coordinates > 0)
5219  continue;
5220  if ((fabs(p.x-point.x) >= MagickEpsilon) ||
5221  (fabs(p.y-point.y) >= MagickEpsilon))
5222  (void) LogMagickEvent(DrawEvent,GetMagickModule()," end last (%.20g)",
5223  (double) coordinates);
5224  else
5225  (void) LogMagickEvent(DrawEvent,GetMagickModule()," end open (%.20g)",
5226  (double) coordinates);
5227  }
5228 }
5229 
5230 MagickExport MagickBooleanType DrawPrimitive(Image *image,
5231  const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5232 {
5233  CacheView
5234  *image_view;
5235 
5237  *exception;
5238 
5239  MagickStatusType
5240  status;
5241 
5242  ssize_t
5243  i,
5244  x;
5245 
5246  ssize_t
5247  y;
5248 
5249  if (draw_info->debug != MagickFalse)
5250  {
5251  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5252  " begin draw-primitive");
5253  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5254  " affine: %g,%g,%g,%g,%g,%g",draw_info->affine.sx,
5255  draw_info->affine.rx,draw_info->affine.ry,draw_info->affine.sy,
5256  draw_info->affine.tx,draw_info->affine.ty);
5257  }
5258  exception=(&image->exception);
5259  status=MagickTrue;
5260  if ((IsGrayColorspace(image->colorspace) != MagickFalse) &&
5261  ((IsPixelGray(&draw_info->fill) == MagickFalse) ||
5262  (IsPixelGray(&draw_info->stroke) == MagickFalse)))
5263  status=SetImageColorspace(image,sRGBColorspace);
5264  if (draw_info->compliance == SVGCompliance)
5265  {
5266  status&=SetImageClipMask(image,draw_info->clipping_mask);
5267  status&=SetImageMask(image,draw_info->composite_mask);
5268  }
5269  x=CastDoubleToLong(ceil(primitive_info->point.x-0.5));
5270  y=CastDoubleToLong(ceil(primitive_info->point.y-0.5));
5271  image_view=AcquireAuthenticCacheView(image,exception);
5272  switch (primitive_info->primitive)
5273  {
5274  case ColorPrimitive:
5275  {
5276  switch (primitive_info->method)
5277  {
5278  case PointMethod:
5279  default:
5280  {
5281  PixelPacket
5282  *q;
5283 
5284  q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5285  if (q == (PixelPacket *) NULL)
5286  break;
5287  (void) GetFillColor(draw_info,x,y,q);
5288  status&=SyncCacheViewAuthenticPixels(image_view,exception);
5289  break;
5290  }
5291  case ReplaceMethod:
5292  {
5293  PixelPacket
5294  target;
5295 
5296  status&=GetOneCacheViewVirtualPixel(image_view,x,y,&target,exception);
5297  for (y=0; y < (ssize_t) image->rows; y++)
5298  {
5299  PixelPacket
5300  *magick_restrict q;
5301 
5302  q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5303  exception);
5304  if (q == (PixelPacket *) NULL)
5305  break;
5306  for (x=0; x < (ssize_t) image->columns; x++)
5307  {
5308  if (IsColorSimilar(image,q,&target) == MagickFalse)
5309  {
5310  q++;
5311  continue;
5312  }
5313  (void) GetFillColor(draw_info,x,y,q);
5314  q++;
5315  }
5316  status&=SyncCacheViewAuthenticPixels(image_view,exception);
5317  if (status == MagickFalse)
5318  break;
5319  }
5320  break;
5321  }
5322  case FloodfillMethod:
5323  case FillToBorderMethod:
5324  {
5326  target;
5327 
5328  status&=GetOneVirtualMagickPixel(image,x,y,&target,exception);
5329  if (primitive_info->method == FillToBorderMethod)
5330  {
5331  target.red=(MagickRealType) draw_info->border_color.red;
5332  target.green=(MagickRealType) draw_info->border_color.green;
5333  target.blue=(MagickRealType) draw_info->border_color.blue;
5334  }
5335  status&=FloodfillPaintImage(image,DefaultChannels,draw_info,&target,x,
5336  y,primitive_info->method == FloodfillMethod ? MagickFalse :
5337  MagickTrue);
5338  break;
5339  }
5340  case ResetMethod:
5341  {
5342  for (y=0; y < (ssize_t) image->rows; y++)
5343  {
5344  PixelPacket
5345  *magick_restrict q;
5346 
5347  ssize_t
5348  x;
5349 
5350  q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5351  exception);
5352  if (q == (PixelPacket *) NULL)
5353  break;
5354  for (x=0; x < (ssize_t) image->columns; x++)
5355  {
5356  (void) GetFillColor(draw_info,x,y,q);
5357  q++;
5358  }
5359  status&=SyncCacheViewAuthenticPixels(image_view,exception);
5360  if (status == MagickFalse)
5361  break;
5362  }
5363  break;
5364  }
5365  }
5366  break;
5367  }
5368  case MattePrimitive:
5369  {
5370  if (image->matte == MagickFalse)
5371  status&=SetImageAlphaChannel(image,OpaqueAlphaChannel);
5372  switch (primitive_info->method)
5373  {
5374  case PointMethod:
5375  default:
5376  {
5377  PixelPacket
5378  pixel;
5379 
5380  PixelPacket
5381  *q;
5382 
5383  q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5384  if (q == (PixelPacket *) NULL)
5385  break;
5386  (void) GetFillColor(draw_info,x,y,&pixel);
5387  SetPixelOpacity(q,pixel.opacity);
5388  status&=SyncCacheViewAuthenticPixels(image_view,exception);
5389  break;
5390  }
5391  case ReplaceMethod:
5392  {
5393  PixelPacket
5394  pixel,
5395  target;
5396 
5397  status&=GetOneCacheViewVirtualPixel(image_view,x,y,&target,exception);
5398  for (y=0; y < (ssize_t) image->rows; y++)
5399  {
5400  PixelPacket
5401  *magick_restrict q;
5402 
5403  ssize_t
5404  x;
5405 
5406  q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5407  exception);
5408  if (q == (PixelPacket *) NULL)
5409  break;
5410  for (x=0; x < (ssize_t) image->columns; x++)
5411  {
5412  if (IsColorSimilar(image,q,&target) == MagickFalse)
5413  {
5414  q++;
5415  continue;
5416  }
5417  (void) GetFillColor(draw_info,x,y,&pixel);
5418  SetPixelOpacity(q,pixel.opacity);
5419  q++;
5420  }
5421  status&=SyncCacheViewAuthenticPixels(image_view,exception);
5422  if (status == MagickFalse)
5423  break;
5424  }
5425  break;
5426  }
5427  case FloodfillMethod:
5428  case FillToBorderMethod:
5429  {
5431  target;
5432 
5433  status&=GetOneVirtualMagickPixel(image,x,y,&target,exception);
5434  if (primitive_info->method == FillToBorderMethod)
5435  {
5436  target.red=(MagickRealType) draw_info->border_color.red;
5437  target.green=(MagickRealType) draw_info->border_color.green;
5438  target.blue=(MagickRealType) draw_info->border_color.blue;
5439  }
5440  status&=FloodfillPaintImage(image,OpacityChannel,draw_info,&target,x,
5441  y,primitive_info->method == FloodfillMethod ? MagickFalse :
5442  MagickTrue);
5443  break;
5444  }
5445  case ResetMethod:
5446  {
5447  PixelPacket
5448  pixel;
5449 
5450  for (y=0; y < (ssize_t) image->rows; y++)
5451  {
5452  PixelPacket
5453  *magick_restrict q;
5454 
5455  ssize_t
5456  x;
5457 
5458  q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5459  exception);
5460  if (q == (PixelPacket *) NULL)
5461  break;
5462  for (x=0; x < (ssize_t) image->columns; x++)
5463  {
5464  (void) GetFillColor(draw_info,x,y,&pixel);
5465  SetPixelOpacity(q,pixel.opacity);
5466  q++;
5467  }
5468  status&=SyncCacheViewAuthenticPixels(image_view,exception);
5469  if (status == MagickFalse)
5470  break;
5471  }
5472  break;
5473  }
5474  }
5475  break;
5476  }
5477  case ImagePrimitive:
5478  {
5479  AffineMatrix
5480  affine;
5481 
5482  char
5483  composite_geometry[MaxTextExtent];
5484 
5485  Image
5486  *composite_image,
5487  *composite_images;
5488 
5489  ImageInfo
5490  *clone_info;
5491 
5493  geometry;
5494 
5495  ssize_t
5496  x1,
5497  y1;
5498 
5499  if (primitive_info->text == (char *) NULL)
5500  break;
5501  clone_info=AcquireImageInfo();
5502  composite_images=(Image *) NULL;
5503  if (LocaleNCompare(primitive_info->text,"data:",5) == 0)
5504  composite_images=ReadInlineImage(clone_info,primitive_info->text,
5505  &image->exception);
5506  else
5507  if (*primitive_info->text != '\0')
5508  {
5509  MagickStatusType
5510  path_status;
5511 
5512  struct stat
5513  attributes;
5514 
5515  /*
5516  Read composite image.
5517  */
5518  (void) CopyMagickString(clone_info->filename,primitive_info->text,
5519  MagickPathExtent);
5520  (void) SetImageInfo(clone_info,1,exception);
5521  (void) CopyMagickString(clone_info->filename,primitive_info->text,
5522  MagickPathExtent);
5523  if (clone_info->size != (char *) NULL)
5524  clone_info->size=DestroyString(clone_info->size);
5525  if (clone_info->extract != (char *) NULL)
5526  clone_info->extract=DestroyString(clone_info->extract);
5527  path_status=GetPathAttributes(clone_info->filename,&attributes);
5528  if (path_status != MagickFalse)
5529  {
5530  if (S_ISCHR(attributes.st_mode) == 0)
5531  composite_images=ReadImage(clone_info,exception);
5532  else
5533  (void) ThrowMagickException(exception,GetMagickModule(),
5534  FileOpenError,"UnableToOpenFile","`%s'",
5535  clone_info->filename);
5536  }
5537  else
5538  if ((LocaleCompare(clone_info->magick,"ftp") != 0) &&
5539  (LocaleCompare(clone_info->magick,"http") != 0) &&
5540  (LocaleCompare(clone_info->magick,"https") != 0) &&
5541  (LocaleCompare(clone_info->magick,"vid") != 0))
5542  composite_images=ReadImage(clone_info,exception);
5543  else
5544  (void) ThrowMagickException(exception,GetMagickModule(),
5545  FileOpenError,"UnableToOpenFile","`%s'",clone_info->filename);
5546  }
5547  clone_info=DestroyImageInfo(clone_info);
5548  if (composite_images == (Image *) NULL)
5549  {
5550  status=0;
5551  break;
5552  }
5553  composite_image=RemoveFirstImageFromList(&composite_images);
5554  composite_images=DestroyImageList(composite_images);
5555  (void) SetImageProgressMonitor(composite_image,(MagickProgressMonitor)
5556  NULL,(void *) NULL);
5557  x1=CastDoubleToLong(ceil(primitive_info[1].point.x-0.5));
5558  y1=CastDoubleToLong(ceil(primitive_info[1].point.y-0.5));
5559  if (((x1 != 0L) && (x1 != (ssize_t) composite_image->columns)) ||
5560  ((y1 != 0L) && (y1 != (ssize_t) composite_image->rows)))
5561  {
5562  char
5563  geometry[MaxTextExtent];
5564 
5565  /*
5566  Resize image.
5567  */
5568  (void) FormatLocaleString(geometry,MaxTextExtent,"%gx%g!",
5569  primitive_info[1].point.x,primitive_info[1].point.y);
5570  composite_image->filter=image->filter;
5571  status&=TransformImage(&composite_image,(char *) NULL,geometry);
5572  }
5573  if (composite_image->matte == MagickFalse)
5574  status&=SetImageAlphaChannel(composite_image,OpaqueAlphaChannel);
5575  if (draw_info->opacity != OpaqueOpacity)
5576  status&=SetImageOpacity(composite_image,draw_info->opacity);
5577  SetGeometry(image,&geometry);
5578  image->gravity=draw_info->gravity;
5579  geometry.x=x;
5580  geometry.y=y;
5581  (void) FormatLocaleString(composite_geometry,MaxTextExtent,
5582  "%.20gx%.20g%+.20g%+.20g",(double) composite_image->columns,(double)
5583  composite_image->rows,(double) geometry.x,(double) geometry.y);
5584  (void) ParseGravityGeometry(image,composite_geometry,&geometry,
5585  &image->exception);
5586  affine=draw_info->affine;
5587  affine.tx=(double) geometry.x;
5588  affine.ty=(double) geometry.y;
5589  composite_image->interpolate=image->interpolate;
5590  if ((draw_info->compose == OverCompositeOp) ||
5591  (draw_info->compose == SrcOverCompositeOp))
5592  status&=DrawAffineImage(image,composite_image,&affine);
5593  else
5594  status&=CompositeImage(image,draw_info->compose,composite_image,
5595  geometry.x,geometry.y);
5596  composite_image=DestroyImage(composite_image);
5597  break;
5598  }
5599  case PointPrimitive:
5600  {
5601  PixelPacket
5602  fill_color;
5603 
5604  PixelPacket
5605  *q;
5606 
5607  if ((y < 0) || (y >= (ssize_t) image->rows))
5608  break;
5609  if ((x < 0) || (x >= (ssize_t) image->columns))
5610  break;
5611  q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5612  if (q == (PixelPacket *) NULL)
5613  break;
5614  (void) GetFillColor(draw_info,x,y,&fill_color);
5615  MagickCompositeOver(&fill_color,(MagickRealType) fill_color.opacity,q,
5616  (MagickRealType) q->opacity,q);
5617  status&=SyncCacheViewAuthenticPixels(image_view,exception);
5618  break;
5619  }
5620  case TextPrimitive:
5621  {
5622  char
5623  geometry[MaxTextExtent];
5624 
5625  DrawInfo
5626  *clone_info;
5627 
5628  if (primitive_info->text == (char *) NULL)
5629  break;
5630  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5631  (void) CloneString(&clone_info->text,primitive_info->text);
5632  (void) FormatLocaleString(geometry,MaxTextExtent,"%+f%+f",
5633  primitive_info->point.x,primitive_info->point.y);
5634  (void) CloneString(&clone_info->geometry,geometry);
5635  status&=AnnotateImage(image,clone_info);
5636  clone_info=DestroyDrawInfo(clone_info);
5637  break;
5638  }
5639  default:
5640  {
5641  double
5642  mid,
5643  scale;
5644 
5645  DrawInfo
5646  *clone_info;
5647 
5648  if (IsEventLogging() != MagickFalse)
5649  LogPrimitiveInfo(primitive_info);
5650  scale=ExpandAffine(&draw_info->affine);
5651  if ((draw_info->dash_pattern != (double *) NULL) &&
5652  (fabs(draw_info->dash_pattern[0]) >= MagickEpsilon) &&
5653  (fabs(scale*draw_info->stroke_width) >= MagickEpsilon) &&
5654  (draw_info->stroke.opacity != (Quantum) TransparentOpacity))
5655  {
5656  /*
5657  Draw dash polygon.
5658  */
5659  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5660  clone_info->stroke_width=0.0;
5661  clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5662  status&=DrawPolygonPrimitive(image,clone_info,primitive_info);
5663  clone_info=DestroyDrawInfo(clone_info);
5664  if (status != MagickFalse)
5665  status&=DrawDashPolygon(draw_info,primitive_info,image);
5666  break;
5667  }
5668  mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
5669  if ((mid > 1.0) &&
5670  ((draw_info->stroke.opacity != (Quantum) TransparentOpacity) ||
5671  (draw_info->stroke_pattern != (Image *) NULL)))
5672  {
5673  double
5674  x,
5675  y;
5676 
5677  MagickBooleanType
5678  closed_path;
5679 
5680  /*
5681  Draw strokes while respecting line cap/join attributes.
5682  */
5683  closed_path=primitive_info[0].closed_subpath;
5684  i=(ssize_t) primitive_info[0].coordinates;
5685  x=fabs(primitive_info[i-1].point.x-primitive_info[0].point.x);
5686  y=fabs(primitive_info[i-1].point.y-primitive_info[0].point.y);
5687  if ((x < MagickEpsilon) && (y < MagickEpsilon))
5688  closed_path=MagickTrue;
5689  if ((((draw_info->linecap == RoundCap) ||
5690  (closed_path != MagickFalse)) &&
5691  (draw_info->linejoin == RoundJoin)) ||
5692  (primitive_info[i].primitive != UndefinedPrimitive))
5693  {
5694  status&=DrawPolygonPrimitive(image,draw_info,primitive_info);
5695  break;
5696  }
5697  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5698  clone_info->stroke_width=0.0;
5699  clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5700  status&=DrawPolygonPrimitive(image,clone_info,primitive_info);
5701  clone_info=DestroyDrawInfo(clone_info);
5702  if (status != MagickFalse)
5703  status&=DrawStrokePolygon(image,draw_info,primitive_info);
5704  break;
5705  }
5706  status&=DrawPolygonPrimitive(image,draw_info,primitive_info);
5707  break;
5708  }
5709  }
5710  image_view=DestroyCacheView(image_view);
5711  if (draw_info->compliance == SVGCompliance)
5712  {
5713  status&=SetImageClipMask(image,(Image *) NULL);
5714  status&=SetImageMask(image,(Image *) NULL);
5715  }
5716  if (draw_info->debug != MagickFalse)
5717  (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-primitive");
5718  return(status != 0 ? MagickTrue : MagickFalse);
5719 }
5720 
5721 /*
5722 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5723 % %
5724 % %
5725 % %
5726 + D r a w S t r o k e P o l y g o n %
5727 % %
5728 % %
5729 % %
5730 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5731 %
5732 % DrawStrokePolygon() draws a stroked polygon (line, rectangle, ellipse) on
5733 % the image while respecting the line cap and join attributes.
5734 %
5735 % The format of the DrawStrokePolygon method is:
5736 %
5737 % MagickBooleanType DrawStrokePolygon(Image *image,
5738 % const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5739 %
5740 % A description of each parameter follows:
5741 %
5742 % o image: the image.
5743 %
5744 % o draw_info: the draw info.
5745 %
5746 % o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
5747 %
5748 %
5749 */
5750 
5751 static MagickBooleanType DrawRoundLinecap(Image *image,
5752  const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5753 {
5755  linecap[5];
5756 
5757  ssize_t
5758  i;
5759 
5760  for (i=0; i < 4; i++)
5761  linecap[i]=(*primitive_info);
5762  linecap[0].coordinates=4;
5763  linecap[1].point.x+=2.0*MagickEpsilon;
5764  linecap[2].point.x+=2.0*MagickEpsilon;
5765  linecap[2].point.y+=2.0*MagickEpsilon;
5766  linecap[3].point.y+=2.0*MagickEpsilon;
5767  linecap[4].primitive=UndefinedPrimitive;
5768  return(DrawPolygonPrimitive(image,draw_info,linecap));
5769 }
5770 
5771 static MagickBooleanType DrawStrokePolygon(Image *image,
5772  const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5773 {
5774  DrawInfo
5775  *clone_info;
5776 
5777  MagickBooleanType
5778  closed_path;
5779 
5780  MagickStatusType
5781  status;
5782 
5784  *stroke_polygon;
5785 
5786  const PrimitiveInfo
5787  *p,
5788  *q;
5789 
5790  /*
5791  Draw stroked polygon.
5792  */
5793  if (draw_info->debug != MagickFalse)
5794  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5795  " begin draw-stroke-polygon");
5796  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5797  clone_info->fill=draw_info->stroke;
5798  if (clone_info->fill_pattern != (Image *) NULL)
5799  clone_info->fill_pattern=DestroyImage(clone_info->fill_pattern);
5800  if (clone_info->stroke_pattern != (Image *) NULL)
5801  clone_info->fill_pattern=CloneImage(clone_info->stroke_pattern,0,0,
5802  MagickTrue,&clone_info->stroke_pattern->exception);
5803  clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5804  clone_info->stroke_width=0.0;
5805  clone_info->fill_rule=NonZeroRule;
5806  status=MagickTrue;
5807  for (p=primitive_info; p->primitive != UndefinedPrimitive; p+=p->coordinates)
5808  {
5809  if (p->coordinates == 1)
5810  continue;
5811  stroke_polygon=TraceStrokePolygon(draw_info,p,&image->exception);
5812  if (stroke_polygon == (PrimitiveInfo *) NULL)
5813  {
5814  status=0;
5815  break;
5816  }
5817  status&=DrawPolygonPrimitive(image,clone_info,stroke_polygon);
5818  stroke_polygon=(PrimitiveInfo *) RelinquishMagickMemory(stroke_polygon);
5819  if (status == 0)
5820  break;
5821  q=p+p->coordinates-1;
5822  closed_path=p->closed_subpath;
5823  if ((draw_info->linecap == RoundCap) && (closed_path == MagickFalse))
5824  {
5825  status&=DrawRoundLinecap(image,draw_info,p);
5826  status&=DrawRoundLinecap(image,draw_info,q);
5827  }
5828  }
5829  clone_info=DestroyDrawInfo(clone_info);
5830  if (draw_info->debug != MagickFalse)
5831  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5832  " end draw-stroke-polygon");
5833  return(status != 0 ? MagickTrue : MagickFalse);
5834 }
5835 
5836 /*
5837 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5838 % %
5839 % %
5840 % %
5841 % G e t A f f i n e M a t r i x %
5842 % %
5843 % %
5844 % %
5845 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5846 %
5847 % GetAffineMatrix() returns an AffineMatrix initialized to the identity
5848 % matrix.
5849 %
5850 % The format of the GetAffineMatrix method is:
5851 %
5852 % void GetAffineMatrix(AffineMatrix *affine_matrix)
5853 %
5854 % A description of each parameter follows:
5855 %
5856 % o affine_matrix: the affine matrix.
5857 %
5858 */
5859 MagickExport void GetAffineMatrix(AffineMatrix *affine_matrix)
5860 {
5861  assert(affine_matrix != (AffineMatrix *) NULL);
5862  if (IsEventLogging() != MagickFalse)
5863  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
5864  (void) memset(affine_matrix,0,sizeof(*affine_matrix));
5865  affine_matrix->sx=1.0;
5866  affine_matrix->sy=1.0;
5867 }
5868 
5869 /*
5870 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5871 % %
5872 % %
5873 % %
5874 + G e t D r a w I n f o %
5875 % %
5876 % %
5877 % %
5878 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5879 %
5880 % GetDrawInfo() initializes draw_info to default values from image_info.
5881 %
5882 % The format of the GetDrawInfo method is:
5883 %
5884 % void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info)
5885 %
5886 % A description of each parameter follows:
5887 %
5888 % o image_info: the image info..
5889 %
5890 % o draw_info: the draw info.
5891 %
5892 */
5893 MagickExport void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info)
5894 {
5895  char
5896  *next_token;
5897 
5898  const char
5899  *option;
5900 
5902  *exception;
5903 
5904  ImageInfo
5905  *clone_info;
5906 
5907  /*
5908  Initialize draw attributes.
5909  */
5910  assert(draw_info != (DrawInfo *) NULL);
5911  if (IsEventLogging() != MagickFalse)
5912  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
5913  (void) memset(draw_info,0,sizeof(*draw_info));
5914  clone_info=CloneImageInfo(image_info);
5915  GetAffineMatrix(&draw_info->affine);
5916  exception=AcquireExceptionInfo();
5917  (void) QueryColorDatabase("#000F",&draw_info->fill,exception);
5918  (void) QueryColorDatabase("#FFF0",&draw_info->stroke,exception);
5919  draw_info->stroke_antialias=clone_info->antialias;
5920  draw_info->stroke_width=1.0;
5921  draw_info->fill_rule=EvenOddRule;
5922  draw_info->opacity=OpaqueOpacity;
5923  draw_info->fill_opacity=OpaqueOpacity;
5924  draw_info->stroke_opacity=OpaqueOpacity;
5925  draw_info->linecap=ButtCap;
5926  draw_info->linejoin=MiterJoin;
5927  draw_info->miterlimit=10;
5928  draw_info->decorate=NoDecoration;
5929  if (clone_info->font != (char *) NULL)
5930  draw_info->font=AcquireString(clone_info->font);
5931  if (clone_info->density != (char *) NULL)
5932  draw_info->density=AcquireString(clone_info->density);
5933  draw_info->text_antialias=clone_info->antialias;
5934  draw_info->pointsize=12.0;
5935  if (fabs(clone_info->pointsize) >= MagickEpsilon)
5936  draw_info->pointsize=clone_info->pointsize;
5937  draw_info->undercolor.opacity=(Quantum) TransparentOpacity;
5938  draw_info->border_color=clone_info->border_color;
5939  draw_info->compose=OverCompositeOp;
5940  if (clone_info->server_name != (char *) NULL)
5941  draw_info->server_name=AcquireString(clone_info->server_name);
5942  draw_info->render=MagickTrue;
5943  draw_info->clip_path=MagickFalse;
5944  draw_info->debug=(GetLogEventMask() & (DrawEvent | AnnotateEvent)) != 0 ?
5945  MagickTrue : MagickFalse;
5946  option=GetImageOption(clone_info,"direction");
5947  if (option != (const char *) NULL)
5948  draw_info->direction=(DirectionType) ParseCommandOption(
5949  MagickDirectionOptions,MagickFalse,option);
5950  else
5951  draw_info->direction=UndefinedDirection;
5952  option=GetImageOption(clone_info,"encoding");
5953  if (option != (const char *) NULL)
5954  (void) CloneString(&draw_info->encoding,option);
5955  option=GetImageOption(clone_info,"family");
5956  if (option != (const char *) NULL)
5957  (void) CloneString(&draw_info->family,option);
5958  option=GetImageOption(clone_info,"fill");
5959  if (option != (const char *) NULL)
5960  (void) QueryColorDatabase(option,&draw_info->fill,exception);
5961  option=GetImageOption(clone_info,"gravity");
5962  if (option != (const char *) NULL)
5963  draw_info->gravity=(GravityType) ParseCommandOption(MagickGravityOptions,
5964  MagickFalse,option);
5965  option=GetImageOption(clone_info,"interline-spacing");
5966  if (option != (const char *) NULL)
5967  draw_info->interline_spacing=GetDrawValue(option,&next_token);
5968  option=GetImageOption(clone_info,"interword-spacing");
5969  if (option != (const char *) NULL)
5970  draw_info->interword_spacing=GetDrawValue(option,&next_token);
5971  option=GetImageOption(clone_info,"kerning");
5972  if (option != (const char *) NULL)
5973  draw_info->kerning=GetDrawValue(option,&next_token);
5974  option=GetImageOption(clone_info,"stroke");
5975  if (option != (const char *) NULL)
5976  (void) QueryColorDatabase(option,&draw_info->stroke,exception);
5977  option=GetImageOption(clone_info,"strokewidth");
5978  if (option != (const char *) NULL)
5979  draw_info->stroke_width=GetDrawValue(option,&next_token);
5980  option=GetImageOption(clone_info,"style");
5981  if (option != (const char *) NULL)
5982  draw_info->style=(StyleType) ParseCommandOption(MagickStyleOptions,
5983  MagickFalse,option);
5984  option=GetImageOption(clone_info,"undercolor");
5985  if (option != (const char *) NULL)
5986  (void) QueryColorDatabase(option,&draw_info->undercolor,exception);
5987  option=GetImageOption(clone_info,"weight");
5988  if (option != (const char *) NULL)
5989  {
5990  ssize_t
5991  weight;
5992 
5993  weight=ParseCommandOption(MagickWeightOptions,MagickFalse,option);
5994  if (weight == -1)
5995  weight=(ssize_t) StringToUnsignedLong(option);
5996  draw_info->weight=(size_t) weight;
5997  }
5998  exception=DestroyExceptionInfo(exception);
5999  draw_info->signature=MagickCoreSignature;
6000  clone_info=DestroyImageInfo(clone_info);
6001 }
6002 
6003 /*
6004 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6005 % %
6006 % %
6007 % %
6008 + P e r m u t a t e %
6009 % %
6010 % %
6011 % %
6012 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6013 %
6014 % Permutate() returns the permuation of the (n,k).
6015 %
6016 % The format of the Permutate method is:
6017 %
6018 % void Permutate(ssize_t n,ssize_t k)
6019 %
6020 % A description of each parameter follows:
6021 %
6022 % o n:
6023 %
6024 % o k:
6025 %
6026 %
6027 */
6028 static inline double Permutate(const ssize_t n,const ssize_t k)
6029 {
6030  double
6031  r;
6032 
6033  ssize_t
6034  i;
6035 
6036  r=1.0;
6037  for (i=k+1; i <= n; i++)
6038  r*=i;
6039  for (i=1; i <= (n-k); i++)
6040  r/=i;
6041  return(r);
6042 }
6043 
6044 /*
6045 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6046 % %
6047 % %
6048 % %
6049 + T r a c e P r i m i t i v e %
6050 % %
6051 % %
6052 % %
6053 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6054 %
6055 % TracePrimitive is a collection of methods for generating graphic
6056 % primitives such as arcs, ellipses, paths, etc.
6057 %
6058 */
6059 
6060 static MagickBooleanType TraceArc(MVGInfo *mvg_info,const PointInfo start,
6061  const PointInfo end,const PointInfo degrees)
6062 {
6063  PointInfo
6064  center,
6065  radius;
6066 
6067  center.x=0.5*(end.x+start.x);
6068  center.y=0.5*(end.y+start.y);
6069  radius.x=fabs(center.x-start.x);
6070  radius.y=fabs(center.y-start.y);
6071  return(TraceEllipse(mvg_info,center,radius,degrees));
6072 }
6073 
6074 static MagickBooleanType TraceArcPath(MVGInfo *mvg_info,const PointInfo start,
6075  const PointInfo end,const PointInfo arc,const double angle,
6076  const MagickBooleanType large_arc,const MagickBooleanType sweep)
6077 {
6078  double
6079  alpha,
6080  beta,
6081  delta,
6082  factor,
6083  gamma,
6084  theta;
6085 
6086  MagickStatusType
6087  status;
6088 
6089  PointInfo
6090  center,
6091  points[3],
6092  radii;
6093 
6094  double
6095  cosine,
6096  sine;
6097 
6099  *primitive_info;
6100 
6102  *p;
6103 
6104  ssize_t
6105  i;
6106 
6107  size_t
6108  arc_segments;
6109 
6110  ssize_t
6111  offset;
6112 
6113  offset=mvg_info->offset;
6114  primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6115  primitive_info->coordinates=0;
6116  if ((fabs(start.x-end.x) < MagickEpsilon) &&
6117  (fabs(start.y-end.y) < MagickEpsilon))
6118  return(TracePoint(primitive_info,end));
6119  radii.x=fabs(arc.x);
6120  radii.y=fabs(arc.y);
6121  if ((radii.x < MagickEpsilon) || (radii.y < MagickEpsilon))
6122  return(TraceLine(primitive_info,start,end));
6123  cosine=cos(DegreesToRadians(fmod((double) angle,360.0)));
6124  sine=sin(DegreesToRadians(fmod((double) angle,360.0)));
6125  center.x=(double) (cosine*(end.x-start.x)/2+sine*(end.y-start.y)/2);
6126  center.y=(double) (cosine*(end.y-start.y)/2-sine*(end.x-start.x)/2);
6127  delta=(center.x*center.x)/(radii.x*radii.x)+(center.y*center.y)/
6128  (radii.y*radii.y);
6129  if (delta < MagickEpsilon)
6130  return(TraceLine(primitive_info,start,end));
6131  if (delta > 1.0)
6132  {
6133  radii.x*=sqrt((double) delta);
6134  radii.y*=sqrt((double) delta);
6135  }
6136  points[0].x=(double) (cosine*start.x/radii.x+sine*start.y/radii.x);
6137  points[0].y=(double) (cosine*start.y/radii.y-sine*start.x/radii.y);
6138  points[1].x=(double) (cosine*end.x/radii.x+sine*end.y/radii.x);
6139  points[1].y=(double) (cosine*end.y/radii.y-sine*end.x/radii.y);
6140  alpha=points[1].x-points[0].x;
6141  beta=points[1].y-points[0].y;
6142  if (fabs(alpha*alpha+beta*beta) < MagickEpsilon)
6143  return(TraceLine(primitive_info,start,end));
6144  factor=PerceptibleReciprocal(alpha*alpha+beta*beta)-0.25;
6145  if (factor <= 0.0)
6146  factor=0.0;
6147  else
6148  {
6149  factor=sqrt((double) factor);
6150  if (sweep == large_arc)
6151  factor=(-factor);
6152  }
6153  center.x=(double) ((points[0].x+points[1].x)/2-factor*beta);
6154  center.y=(double) ((points[0].y+points[1].y)/2+factor*alpha);
6155  alpha=atan2(points[0].y-center.y,points[0].x-center.x);
6156  theta=atan2(points[1].y-center.y,points[1].x-center.x)-alpha;
6157  if ((theta < 0.0) && (sweep != MagickFalse))
6158  theta+=2.0*MagickPI;
6159  else
6160  if ((theta > 0.0) && (sweep == MagickFalse))
6161  theta-=2.0*MagickPI;
6162  arc_segments=(size_t) CastDoubleToLong(ceil(fabs((double) (theta/(0.5*
6163  MagickPI+MagickEpsilon)))));
6164  p=primitive_info;
6165  status=MagickTrue;
6166  for (i=0; i < (ssize_t) arc_segments; i++)
6167  {
6168  beta=0.5*((alpha+(i+1)*theta/arc_segments)-(alpha+i*theta/arc_segments));
6169  gamma=(8.0/3.0)*sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))*
6170  sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))/
6171  sin(fmod((double) beta,DegreesToRadians(360.0)));
6172  points[0].x=(double) (center.x+cos(fmod((double) (alpha+(double) i*theta/
6173  arc_segments),DegreesToRadians(360.0)))-gamma*sin(fmod((double) (alpha+
6174  (double) i*theta/arc_segments),DegreesToRadians(360.0))));
6175  points[0].y=(double) (center.y+sin(fmod((double) (alpha+(double) i*theta/
6176  arc_segments),DegreesToRadians(360.0)))+gamma*cos(fmod((double) (alpha+
6177  (double) i*theta/arc_segments),DegreesToRadians(360.0))));
6178  points[2].x=(double) (center.x+cos(fmod((double) (alpha+(double) (i+1)*
6179  theta/arc_segments),DegreesToRadians(360.0))));
6180  points[2].y=(double) (center.y+sin(fmod((double) (alpha+(double) (i+1)*
6181  theta/arc_segments),DegreesToRadians(360.0))));
6182  points[1].x=(double) (points[2].x+gamma*sin(fmod((double) (alpha+(double)
6183  (i+1)*theta/arc_segments),DegreesToRadians(360.0))));
6184  points[1].y=(double) (points[2].y-gamma*cos(fmod((double) (alpha+(double)
6185  (i+1)*theta/arc_segments),DegreesToRadians(360.0))));
6186  p->point.x=(p == primitive_info) ? start.x : (p-1)->point.x;
6187  p->point.y=(p == primitive_info) ? start.y : (p-1)->point.y;
6188  (p+1)->point.x=(double) (cosine*radii.x*points[0].x-sine*radii.y*
6189  points[0].y);
6190  (p+1)->point.y=(double) (sine*radii.x*points[0].x+cosine*radii.y*
6191  points[0].y);
6192  (p+2)->point.x=(double) (cosine*radii.x*points[1].x-sine*radii.y*
6193  points[1].y);
6194  (p+2)->point.y=(double) (sine*radii.x*points[1].x+cosine*radii.y*
6195  points[1].y);
6196  (p+3)->point.x=(double) (cosine*radii.x*points[2].x-sine*radii.y*
6197  points[2].y);
6198  (p+3)->point.y=(double) (sine*radii.x*points[2].x+cosine*radii.y*
6199  points[2].y);
6200  if (i == (ssize_t) (arc_segments-1))
6201  (p+3)->point=end;
6202  status&=TraceBezier(mvg_info,4);
6203  if (status == 0)
6204  break;
6205  p=(*mvg_info->primitive_info)+mvg_info->offset;
6206  mvg_info->offset+=p->coordinates;
6207  p+=p->coordinates;
6208  }
6209  if (status == 0)
6210  return(MagickFalse);
6211  mvg_info->offset=offset;
6212  primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6213  primitive_info->coordinates=(size_t) (p-primitive_info);
6214  primitive_info->closed_subpath=MagickFalse;
6215  for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6216  {
6217  p->primitive=primitive_info->primitive;
6218  p--;
6219  }
6220  return(MagickTrue);
6221 }
6222 
6223 static MagickBooleanType TraceBezier(MVGInfo *mvg_info,
6224  const size_t number_coordinates)
6225 {
6226  double
6227  alpha,
6228  *coefficients,
6229  weight;
6230 
6231  PointInfo
6232  end,
6233  point,
6234  *points;
6235 
6237  *primitive_info;
6238 
6240  *p;
6241 
6242  ssize_t
6243  i,
6244  j;
6245 
6246  size_t
6247  control_points,
6248  quantum;
6249 
6250  /*
6251  Allocate coefficients.
6252  */
6253  primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6254  quantum=number_coordinates;
6255  for (i=0; i < (ssize_t) number_coordinates; i++)
6256  {
6257  for (j=i+1; j < (ssize_t) number_coordinates; j++)
6258  {
6259  alpha=fabs(primitive_info[j].point.x-primitive_info[i].point.x);
6260  if (alpha > (double) MAGICK_SSIZE_MAX)
6261  {
6262  (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6263  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6264  return(MagickFalse);
6265  }
6266  if (alpha > (double) quantum)
6267  quantum=(size_t) alpha;
6268  alpha=fabs(primitive_info[j].point.y-primitive_info[i].point.y);
6269  if (alpha > (double) MAGICK_SSIZE_MAX)
6270  {
6271  (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6272  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6273  return(MagickFalse);
6274  }
6275  if (alpha > (double) quantum)
6276  quantum=(size_t) alpha;
6277  }
6278  }
6279  coefficients=(double *) AcquireQuantumMemory(number_coordinates,
6280  sizeof(*coefficients));
6281  quantum=MagickMin(quantum/number_coordinates,BezierQuantum);
6282  points=(PointInfo *) AcquireQuantumMemory(quantum,number_coordinates*
6283  sizeof(*points));
6284  if ((coefficients == (double *) NULL) || (points == (PointInfo *) NULL))
6285  {
6286  if (points != (PointInfo *) NULL)
6287  points=(PointInfo *) RelinquishMagickMemory(points);
6288  if (coefficients != (double *) NULL)
6289  coefficients=(double *) RelinquishMagickMemory(coefficients);
6290  (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6291  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6292  return(MagickFalse);
6293  }
6294  control_points=quantum*number_coordinates;
6295  if (CheckPrimitiveExtent(mvg_info,(double) control_points+1) == MagickFalse)
6296  {
6297  points=(PointInfo *) RelinquishMagickMemory(points);
6298  coefficients=(double *) RelinquishMagickMemory(coefficients);
6299  return(MagickFalse);
6300  }
6301  primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6302  /*
6303  Compute bezier points.
6304  */
6305  end=primitive_info[number_coordinates-1].point;
6306  for (i=0; i < (ssize_t) number_coordinates; i++)
6307  coefficients[i]=Permutate((ssize_t) number_coordinates-1,i);
6308  weight=0.0;
6309  for (i=0; i < (ssize_t) control_points; i++)
6310  {
6311  p=primitive_info;
6312  point.x=0.0;
6313  point.y=0.0;
6314  alpha=pow((double) (1.0-weight),(double) number_coordinates-1.0);
6315  for (j=0; j < (ssize_t) number_coordinates; j++)
6316  {
6317  point.x+=alpha*coefficients[j]*p->point.x;
6318  point.y+=alpha*coefficients[j]*p->point.y;
6319  alpha*=weight/(1.0-weight);
6320  p++;
6321  }
6322  points[i]=point;
6323  weight+=1.0/control_points;
6324  }
6325  /*
6326  Bezier curves are just short segmented polys.
6327  */
6328  p=primitive_info;
6329  for (i=0; i < (ssize_t) control_points; i++)
6330  {
6331  if (TracePoint(p,points[i]) == MagickFalse)
6332  {
6333  points=(PointInfo *) RelinquishMagickMemory(points);
6334  coefficients=(double *) RelinquishMagickMemory(coefficients);
6335  return(MagickFalse);
6336  }
6337  p+=p->coordinates;
6338  }
6339  if (TracePoint(p,end) == MagickFalse)
6340  {
6341  points=(PointInfo *) RelinquishMagickMemory(points);
6342  coefficients=(double *) RelinquishMagickMemory(coefficients);
6343  return(MagickFalse);
6344  }
6345  p+=p->coordinates;
6346  primitive_info->coordinates=(size_t) (p-primitive_info);
6347  primitive_info->closed_subpath=MagickFalse;
6348  for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6349  {
6350  p->primitive=primitive_info->primitive;
6351  p--;
6352  }
6353  points=(PointInfo *) RelinquishMagickMemory(points);
6354  coefficients=(double *) RelinquishMagickMemory(coefficients);
6355  return(MagickTrue);
6356 }
6357 
6358 static MagickBooleanType TraceCircle(MVGInfo *mvg_info,const PointInfo start,
6359  const PointInfo end)
6360 {
6361  double
6362  alpha,
6363  beta,
6364  radius;
6365 
6366  PointInfo
6367  offset,
6368  degrees;
6369 
6370  alpha=end.x-start.x;
6371  beta=end.y-start.y;
6372  radius=hypot((double) alpha,(double) beta);
6373  offset.x=(double) radius;
6374  offset.y=(double) radius;
6375  degrees.x=0.0;
6376  degrees.y=360.0;
6377  return(TraceEllipse(mvg_info,start,offset,degrees));
6378 }
6379 
6380 static MagickBooleanType TraceEllipse(MVGInfo *mvg_info,const PointInfo center,
6381  const PointInfo radii,const PointInfo arc)
6382 {
6383  double
6384  coordinates,
6385  delta,
6386  step,
6387  x,
6388  y;
6389 
6390  PointInfo
6391  angle,
6392  point;
6393 
6395  *primitive_info;
6396 
6398  *p;
6399 
6400  ssize_t
6401  i;
6402 
6403  /*
6404  Ellipses are just short segmented polys.
6405  */
6406  primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6407  primitive_info->coordinates=0;
6408  if ((fabs(radii.x) < MagickEpsilon) || (fabs(radii.y) < MagickEpsilon))
6409  return(MagickTrue);
6410  delta=2.0*PerceptibleReciprocal(MagickMax(radii.x,radii.y));
6411  step=MagickPI/8.0;
6412  if ((delta >= 0.0) && (delta < (MagickPI/8.0)))
6413  step=MagickPI/4.0/(MagickPI*PerceptibleReciprocal(delta)/2.0);
6414  angle.x=DegreesToRadians(arc.x);
6415  y=arc.y;
6416  while (y < arc.x)
6417  y+=360.0;
6418  angle.y=DegreesToRadians(y);
6419  coordinates=ceil((angle.y-angle.x)/step+1.0);
6420  if (CheckPrimitiveExtent(mvg_info,coordinates) == MagickFalse)
6421  return(MagickFalse);
6422  primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6423  for (p=primitive_info; angle.x < angle.y; angle.x+=step)
6424  {
6425  point.x=cos(fmod(angle.x,DegreesToRadians(360.0)))*radii.x+center.x;
6426  point.y=sin(fmod(angle.x,DegreesToRadians(360.0)))*radii.y+center.y;
6427  if (TracePoint(p,point) == MagickFalse)
6428  return(MagickFalse);
6429  p+=p->coordinates;
6430  }
6431  point.x=cos(fmod(angle.y,DegreesToRadians(360.0)))*radii.x+center.x;
6432  point.y=sin(fmod(angle.y,DegreesToRadians(360.0)))*radii.y+center.y;
6433  if (TracePoint(p,point) == MagickFalse)
6434  return(MagickFalse);
6435  p+=p->coordinates;
6436  primitive_info->coordinates=(size_t) (p-primitive_info);
6437  primitive_info->closed_subpath=MagickFalse;
6438  x=fabs(primitive_info[0].point.x-
6439  primitive_info[primitive_info->coordinates-1].point.x);
6440  y=fabs(primitive_info[0].point.y-
6441  primitive_info[primitive_info->coordinates-1].point.y);
6442  if ((x < MagickEpsilon) && (y < MagickEpsilon))
6443  primitive_info->closed_subpath=MagickTrue;
6444  for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6445  {
6446  p->primitive=primitive_info->primitive;
6447  p--;
6448  }
6449  return(MagickTrue);
6450 }
6451 
6452 static MagickBooleanType TraceLine(PrimitiveInfo *primitive_info,
6453  const PointInfo start,const PointInfo end)
6454 {
6455  if (TracePoint(primitive_info,start) == MagickFalse)
6456  return(MagickFalse);
6457  if ((fabs(start.x-end.x) < MagickEpsilon) &&
6458  (fabs(start.y-end.y) < MagickEpsilon))
6459  {
6460  primitive_info->primitive=PointPrimitive;
6461  primitive_info->coordinates=1;
6462  return(MagickTrue);
6463  }
6464  if (TracePoint(primitive_info+1,end) == MagickFalse)
6465  return(MagickFalse);
6466  (primitive_info+1)->primitive=primitive_info->primitive;
6467  primitive_info->coordinates=2;
6468  primitive_info->closed_subpath=MagickFalse;
6469  return(MagickTrue);
6470 }
6471 
6472 static ssize_t TracePath(Image *image,MVGInfo *mvg_info,const char *path)
6473 {
6474  char
6475  *next_token,
6476  token[MaxTextExtent] = "";
6477 
6478  const char
6479  *p;
6480 
6481  double
6482  x,
6483  y;
6484 
6485  int
6486  attribute,
6487  last_attribute;
6488 
6489  MagickStatusType
6490  status;
6491 
6492  PointInfo
6493  end = {0.0, 0.0},
6494  points[4] = { {0.0, 0.0}, {0.0, 0.0}, {0.0, 0.0}, {0.0, 0.0} },
6495  point = {0.0, 0.0},
6496  start = {0.0, 0.0};
6497 
6499  *primitive_info;
6500 
6501  PrimitiveType
6502  primitive_type;
6503 
6505  *q;
6506 
6507  ssize_t
6508  i;
6509 
6510  size_t
6511  number_coordinates,
6512  z_count;
6513 
6514  ssize_t
6515  subpath_offset;
6516 
6517  subpath_offset=mvg_info->offset;
6518  primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6519  status=MagickTrue;
6520  attribute=0;
6521  number_coordinates=0;
6522  z_count=0;
6523  *token='\0';
6524  primitive_type=primitive_info->primitive;
6525  q=primitive_info;
6526  for (p=path; *p != '\0'; )
6527  {
6528  if (status == MagickFalse)
6529  break;
6530  while (isspace((int) ((unsigned char) *p)) != 0)
6531  p++;
6532  if (*p == '\0')
6533  break;
6534  last_attribute=attribute;
6535  attribute=(int) (*p++);
6536  switch (attribute)
6537  {
6538  case 'a':
6539  case 'A':
6540  {
6541  double
6542  angle = 0.0;
6543 
6544  MagickBooleanType
6545  large_arc = MagickFalse,
6546  sweep = MagickFalse;
6547 
6548  PointInfo
6549  arc = {0.0, 0.0};
6550 
6551  /*
6552  Elliptical arc.
6553  */
6554  do
6555  {
6556  (void) GetNextToken(p,&p,MaxTextExtent,token);
6557  if (*token == ',')
6558  (void) GetNextToken(p,&p,MaxTextExtent,token);
6559  arc.x=GetDrawValue(token,&next_token);
6560  if (token == next_token)
6561  ThrowPointExpectedException(image,token);
6562  (void) GetNextToken(p,&p,MaxTextExtent,token);
6563  if (*token == ',')
6564  (void) GetNextToken(p,&p,MaxTextExtent,token);
6565  arc.y=GetDrawValue(token,&next_token);
6566  if (token == next_token)
6567  ThrowPointExpectedException(image,token);
6568  (void) GetNextToken(p,&p,MaxTextExtent,token);
6569  if (*token == ',')
6570  (void) GetNextToken(p,&p,MaxTextExtent,token);
6571  angle=GetDrawValue(token,&next_token);
6572  if (token == next_token)
6573  ThrowPointExpectedException(image,token);
6574  (void) GetNextToken(p,&p,MaxTextExtent,token);
6575  if (*token == ',')
6576  (void) GetNextToken(p,&p,MaxTextExtent,token);
6577  large_arc=StringToLong(token) != 0 ? MagickTrue : MagickFalse;
6578  (void) GetNextToken(p,&p,MaxTextExtent,token);
6579  if (*token == ',')
6580  (void) GetNextToken(p,&p,MaxTextExtent,token);
6581  sweep=StringToLong(token) != 0 ? MagickTrue : MagickFalse;
6582  if (*token == ',')
6583  (void) GetNextToken(p,&p,MaxTextExtent,token);
6584  (void) GetNextToken(p,&p,MaxTextExtent,token);
6585  if (*token == ',')
6586  (void) GetNextToken(p,&p,MaxTextExtent,token);
6587  x=GetDrawValue(token,&next_token);
6588  if (token == next_token)
6589  ThrowPointExpectedException(image,token);
6590  (void) GetNextToken(p,&p,MaxTextExtent,token);
6591  if (*token == ',')
6592  (void) GetNextToken(p,&p,MaxTextExtent,token);
6593  y=GetDrawValue(token,&next_token);
6594  if (token == next_token)
6595  ThrowPointExpectedException(image,token);
6596  end.x=(double) (attribute == (int) 'A' ? x : point.x+x);
6597  end.y=(double) (attribute == (int) 'A' ? y : point.y+y);
6598  status&=TraceArcPath(mvg_info,point,end,arc,angle,large_arc,sweep);
6599  q=(*mvg_info->primitive_info)+mvg_info->offset;
6600  mvg_info->offset+=q->coordinates;
6601  q+=q->coordinates;
6602  point=end;
6603  while (isspace((int) ((unsigned char) *p)) != 0)
6604  p++;
6605  if (*p == ',')
6606  p++;
6607  } while (IsPoint(p) != MagickFalse);
6608  break;
6609  }
6610  case 'c':
6611  case 'C':
6612  {
6613  /*
6614  Cubic Bézier curve.
6615  */
6616  do
6617  {
6618  points[0]=point;
6619  for (i=1; i < 4; i++)
6620  {
6621  (void) GetNextToken(p,&p,MaxTextExtent,token);
6622  if (*token == ',')
6623  (void) GetNextToken(p,&p,MaxTextExtent,token);
6624  x=GetDrawValue(token,&next_token);
6625  if (token == next_token)
6626  ThrowPointExpectedException(image,token);
6627  (void) GetNextToken(p,&p,MaxTextExtent,token);
6628  if (*token == ',')
6629  (void) GetNextToken(p,&p,MaxTextExtent,token);
6630  y=GetDrawValue(token,&next_token);
6631  if (token == next_token)
6632  ThrowPointExpectedException(image,token);
6633  end.x=(double) (attribute == (int) 'C' ? x : point.x+x);
6634  end.y=(double) (attribute == (int) 'C' ? y : point.y+y);
6635  points[i]=end;
6636  }
6637  for (i=0; i < 4; i++)
6638  (q+i)->point=points[i];
6639  if (TraceBezier(mvg_info,4) == MagickFalse)
6640  return(-1);
6641  q=(*mvg_info->primitive_info)+mvg_info->offset;
6642  mvg_info->offset+=q->coordinates;
6643  q+=q->coordinates;
6644  point=end;
6645  while (isspace((int) ((unsigned char) *p)) != 0)
6646  p++;
6647  if (*p == ',')
6648  p++;
6649  } while (IsPoint(p) != MagickFalse);
6650  break;
6651  }
6652  case 'H':
6653  case 'h':
6654  {
6655  do
6656  {
6657  (void) GetNextToken(p,&p,MaxTextExtent,token);
6658  if (*token == ',')
6659  (void) GetNextToken(p,&p,MaxTextExtent,token);
6660  x=GetDrawValue(token,&next_token);
6661  if (token == next_token)
6662  ThrowPointExpectedException(image,token);
6663  point.x=(double) (attribute == (int) 'H' ? x: point.x+x);
6664  if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6665  return(-1);
6666  q=(*mvg_info->primitive_info)+mvg_info->offset;
6667  if (TracePoint(q,point) == MagickFalse)
6668  return(-1);
6669  mvg_info->offset+=q->coordinates;
6670  q+=q->coordinates;
6671  while (isspace((int) ((unsigned char) *p)) != 0)
6672  p++;
6673  if (*p == ',')
6674  p++;
6675  } while (IsPoint(p) != MagickFalse);
6676  break;
6677  }
6678  case 'l':
6679  case 'L':
6680  {
6681  /*
6682  Line to.
6683  */
6684  do
6685  {
6686  (void) GetNextToken(p,&p,MaxTextExtent,token);
6687  if (*token == ',')
6688  (void) GetNextToken(p,&p,MaxTextExtent,token);
6689  x=GetDrawValue(token,&next_token);
6690  if (token == next_token)
6691  ThrowPointExpectedException(image,token);
6692  (void) GetNextToken(p,&p,MaxTextExtent,token);
6693  if (*token == ',')
6694  (void) GetNextToken(p,&p,MaxTextExtent,token);
6695  y=GetDrawValue(token,&next_token);
6696  if (token == next_token)
6697  ThrowPointExpectedException(image,token);
6698  point.x=(double) (attribute == (int) 'L' ? x : point.x+x);
6699  point.y=(double) (attribute == (int) 'L' ? y : point.y+y);
6700  if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6701  return(-1);
6702  q=(*mvg_info->primitive_info)+mvg_info->offset;
6703  if (TracePoint(q,point) == MagickFalse)
6704  return(-1);
6705  mvg_info->offset+=q->coordinates;
6706  q+=q->coordinates;
6707  while (isspace((int) ((unsigned char) *p)) != 0)
6708  p++;
6709  if (*p == ',')
6710  p++;
6711  } while (IsPoint(p) != MagickFalse);
6712  break;
6713  }
6714  case 'M':
6715  case 'm':
6716  {
6717  /*
6718  Move to.
6719  */
6720  if (mvg_info->offset != subpath_offset)
6721  {
6722  primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6723  primitive_info->coordinates=(size_t) (q-primitive_info);
6724  number_coordinates+=primitive_info->coordinates;
6725  primitive_info=q;
6726  subpath_offset=mvg_info->offset;
6727  }
6728  i=0;
6729  do
6730  {
6731  (void) GetNextToken(p,&p,MaxTextExtent,token);
6732  if (*token == ',')
6733  (void) GetNextToken(p,&p,MaxTextExtent,token);
6734  x=GetDrawValue(token,&next_token);
6735  if (token == next_token)
6736  ThrowPointExpectedException(image,token);
6737  (void) GetNextToken(p,&p,MaxTextExtent,token);
6738  if (*token == ',')
6739  (void) GetNextToken(p,&p,MaxTextExtent,token);
6740  y=GetDrawValue(token,&next_token);
6741  if (token == next_token)
6742  ThrowPointExpectedException(image,token);
6743  point.x=(double) (attribute == (int) 'M' ? x : point.x+x);
6744  point.y=(double) (attribute == (int) 'M' ? y : point.y+y);
6745  if (i == 0)
6746  start=point;
6747  i++;
6748  if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6749  return(-1);
6750  q=(*mvg_info->primitive_info)+mvg_info->offset;
6751  if (TracePoint(q,point) == MagickFalse)
6752  return(-1);
6753  mvg_info->offset+=q->coordinates;
6754  q+=q->coordinates;
6755  while (isspace((int) ((unsigned char) *p)) != 0)
6756  p++;
6757  if (*p == ',')
6758  p++;
6759  } while (IsPoint(p) != MagickFalse);
6760  break;
6761  }
6762  case 'q':
6763  case 'Q':
6764  {
6765  /*
6766  Quadratic Bézier curve.
6767  */
6768  do
6769  {
6770  points[0]=point;
6771  for (i=1; i < 3; i++)
6772  {
6773  (void) GetNextToken(p,&p,MaxTextExtent,token);
6774  if (*token == ',')
6775  (void) GetNextToken(p,&p,MaxTextExtent,token);
6776  x=GetDrawValue(token,&next_token);
6777  if (token == next_token)
6778  ThrowPointExpectedException(image,token);
6779  (void) GetNextToken(p,&p,MaxTextExtent,token);
6780  if (*token == ',')
6781  (void) GetNextToken(p,&p,MaxTextExtent,token);
6782  y=GetDrawValue(token,&next_token);
6783  if (token == next_token)
6784  ThrowPointExpectedException(image,token);
6785  if (*p == ',')
6786  p++;
6787  end.x=(double) (attribute == (int) 'Q' ? x : point.x+x);
6788  end.y=(double) (attribute == (int) 'Q' ? y : point.y+y);
6789  points[i]=end;
6790  }
6791  for (i=0; i < 3; i++)
6792  (q+i)->point=points[i];
6793  if (TraceBezier(mvg_info,3) == MagickFalse)
6794  return(-1);
6795  q=(*mvg_info->primitive_info)+mvg_info->offset;
6796  mvg_info->offset+=q->coordinates;
6797  q+=q->coordinates;
6798  point=end;
6799  while (isspace((int) ((unsigned char) *p)) != 0)
6800  p++;
6801  if (*p == ',')
6802  p++;
6803  } while (IsPoint(p) != MagickFalse);
6804  break;
6805  }
6806  case 's':
6807  case 'S':
6808  {
6809  /*
6810  Cubic Bézier curve.
6811  */
6812  do
6813  {
6814  points[0]=points[3];
6815  points[1].x=2.0*points[3].x-points[2].x;
6816  points[1].y=2.0*points[3].y-points[2].y;
6817  for (i=2; i < 4; i++)
6818  {
6819  (void) GetNextToken(p,&p,MaxTextExtent,token);
6820  if (*token == ',')
6821  (void) GetNextToken(p,&p,MaxTextExtent,token);
6822  x=GetDrawValue(token,&next_token);
6823  if (token == next_token)
6824  ThrowPointExpectedException(image,token);
6825  (void) GetNextToken(p,&p,MaxTextExtent,token);
6826  if (*token == ',')
6827  (void) GetNextToken(p,&p,MaxTextExtent,token);
6828  y=GetDrawValue(token,&next_token);
6829  if (token == next_token)
6830  ThrowPointExpectedException(image,token);
6831  if (*p == ',')
6832  p++;
6833  end.x=(double) (attribute == (int) 'S' ? x : point.x+x);
6834  end.y=(double) (attribute == (int) 'S' ? y : point.y+y);
6835  points[i]=end;
6836  }
6837  if (strchr("CcSs",last_attribute) == (char *) NULL)
6838  {
6839  points[0]=point;
6840  points[1]=point;
6841  }
6842  for (i=0; i < 4; i++)
6843  (q+i)->point=points[i];
6844  if (TraceBezier(mvg_info,4) == MagickFalse)
6845  return(-1);
6846  q=(*mvg_info->primitive_info)+mvg_info->offset;
6847  mvg_info->offset+=q->coordinates;
6848  q+=q->coordinates;
6849  point=end;
6850  last_attribute=attribute;
6851  while (isspace((int) ((unsigned char) *p)) != 0)
6852  p++;
6853  if (*p == ',')
6854  p++;
6855  } while (IsPoint(p) != MagickFalse);
6856  break;
6857  }
6858  case 't':
6859  case 'T':
6860  {
6861  /*
6862  Quadratic Bézier curve.
6863  */
6864  do
6865  {
6866  points[0]=points[2];
6867  points[1].x=2.0*points[2].x-points[1].x;
6868  points[1].y=2.0*points[2].y-points[1].y;
6869  for (i=2; i < 3; i++)
6870  {
6871  (void) GetNextToken(p,&p,MaxTextExtent,token);
6872  if (*token == ',')
6873  (void) GetNextToken(p,&p,MaxTextExtent,token);
6874  x=GetDrawValue(token,&next_token);
6875  if (token == next_token)
6876  ThrowPointExpectedException(image,token);
6877  (void) GetNextToken(p,&p,MaxTextExtent,token);
6878  if (*token == ',')
6879  (void) GetNextToken(p,&p,MaxTextExtent,token);
6880  y=GetDrawValue(token,&next_token);
6881  if (token == next_token)
6882  ThrowPointExpectedException(image,token);
6883  end.x=(double) (attribute == (int) 'T' ? x : point.x+x);
6884  end.y=(double) (attribute == (int) 'T' ? y : point.y+y);
6885  points[i]=end;
6886  }
6887  if (status == MagickFalse)
6888  break;
6889  if (strchr("QqTt",last_attribute) == (char *) NULL)
6890  {
6891  points[0]=point;
6892  points[1]=point;
6893  }
6894  for (i=0; i < 3; i++)
6895  (q+i)->point=points[i];
6896  if (TraceBezier(mvg_info,3) == MagickFalse)
6897  return(-1);
6898  q=(*mvg_info->primitive_info)+mvg_info->offset;
6899  mvg_info->offset+=q->coordinates;
6900  q+=q->coordinates;
6901  point=end;
6902  last_attribute=attribute;
6903  while (isspace((int) ((unsigned char) *p)) != 0)
6904  p++;
6905  if (*p == ',')
6906  p++;
6907  } while (IsPoint(p) != MagickFalse);
6908  break;
6909  }
6910  case 'v':
6911  case 'V':
6912  {
6913  /*
6914  Line to.
6915  */
6916  do
6917  {
6918  (void) GetNextToken(p,&p,MaxTextExtent,token);
6919  if (*token == ',')
6920  (void) GetNextToken(p,&p,MaxTextExtent,token);
6921  y=GetDrawValue(token,&next_token);
6922  if (token == next_token)
6923  ThrowPointExpectedException(image,token);
6924  point.y=(double) (attribute == (int) 'V' ? y : point.y+y);
6925  if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6926  return(-1);
6927  q=(*mvg_info->primitive_info)+mvg_info->offset;
6928  if (TracePoint(q,point) == MagickFalse)
6929  return(-1);
6930  mvg_info->offset+=q->coordinates;
6931  q+=q->coordinates;
6932  while (isspace((int) ((unsigned char) *p)) != 0)
6933  p++;
6934  if (*p == ',')
6935  p++;
6936  } while (IsPoint(p) != MagickFalse);
6937  break;
6938  }
6939  case 'z':
6940  case 'Z':
6941  {
6942  /*
6943  Close path.
6944  */
6945  point=start;
6946  if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6947  return(-1);
6948  q=(*mvg_info->primitive_info)+mvg_info->offset;
6949  if (TracePoint(q,point) == MagickFalse)
6950  return(-1);
6951  mvg_info->offset+=q->coordinates;
6952  q+=q->coordinates;
6953  primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6954  primitive_info->coordinates=(size_t) (q-primitive_info);
6955  primitive_info->closed_subpath=MagickTrue;
6956  number_coordinates+=primitive_info->coordinates;
6957  primitive_info=q;
6958  subpath_offset=mvg_info->offset;
6959  z_count++;
6960  break;
6961  }
6962  default:
6963  {
6964  ThrowPointExpectedException(image,token);
6965  break;
6966  }
6967  }
6968  }
6969  if (status == MagickFalse)
6970  return(-1);
6971  primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6972  primitive_info->coordinates=(size_t) (q-primitive_info);
6973  number_coordinates+=primitive_info->coordinates;
6974  for (i=0; i < (ssize_t) number_coordinates; i++)
6975  {
6976  q--;
6977  q->primitive=primitive_type;
6978  if (z_count > 1)
6979  q->method=FillToBorderMethod;
6980  }
6981  q=primitive_info;
6982  return((ssize_t) number_coordinates);
6983 }
6984 
6985 static MagickBooleanType TraceRectangle(PrimitiveInfo *primitive_info,
6986  const PointInfo start,const PointInfo end)
6987 {
6988  PointInfo
6989  point;
6990 
6992  *p;
6993 
6994  ssize_t
6995  i;
6996 
6997  p=primitive_info;
6998  if (TracePoint(p,start) == MagickFalse)
6999  return(MagickFalse);
7000  p+=p->coordinates;
7001  point.x=start.x;
7002  point.y=end.y;
7003  if (TracePoint(p,point) == MagickFalse)
7004  return(MagickFalse);
7005  p+=p->coordinates;
7006  if (TracePoint(p,end) == MagickFalse)
7007  return(MagickFalse);
7008  p+=p->coordinates;
7009  point.x=end.x;
7010  point.y=start.y;
7011  if (TracePoint(p,point) == MagickFalse)
7012  return(MagickFalse);
7013  p+=p->coordinates;
7014  if (TracePoint(p,start) == MagickFalse)
7015  return(MagickFalse);
7016  p+=p->coordinates;
7017  primitive_info->coordinates=(size_t) (p-primitive_info);
7018  primitive_info->closed_subpath=MagickTrue;
7019  for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
7020  {
7021  p->primitive=primitive_info->primitive;
7022  p--;
7023  }
7024  return(MagickTrue);
7025 }
7026 
7027 static MagickBooleanType TraceRoundRectangle(MVGInfo *mvg_info,
7028  const PointInfo start,const PointInfo end,PointInfo arc)
7029 {
7030  PointInfo
7031  degrees,
7032  point,
7033  segment;
7034 
7036  *primitive_info;
7037 
7039  *p;
7040 
7041  ssize_t
7042  i;
7043 
7044  ssize_t
7045  offset;
7046 
7047  offset=mvg_info->offset;
7048  segment.x=fabs(end.x-start.x);
7049  segment.y=fabs(end.y-start.y);
7050  if ((segment.x < MagickEpsilon) || (segment.y < MagickEpsilon))
7051  {
7052  (*mvg_info->primitive_info+mvg_info->offset)->coordinates=0;
7053  return(MagickTrue);
7054  }
7055  if (arc.x > (0.5*segment.x))
7056  arc.x=0.5*segment.x;
7057  if (arc.y > (0.5*segment.y))
7058  arc.y=0.5*segment.y;
7059  point.x=start.x+segment.x-arc.x;
7060  point.y=start.y+arc.y;
7061  degrees.x=270.0;
7062  degrees.y=360.0;
7063  if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7064  return(MagickFalse);
7065  p=(*mvg_info->primitive_info)+mvg_info->offset;
7066  mvg_info->offset+=p->coordinates;
7067  point.x=start.x+segment.x-arc.x;
7068  point.y=start.y+segment.y-arc.y;
7069  degrees.x=0.0;
7070  degrees.y=90.0;
7071  if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7072  return(MagickFalse);
7073  p=(*mvg_info->primitive_info)+mvg_info->offset;
7074  mvg_info->offset+=p->coordinates;
7075  point.x=start.x+arc.x;
7076  point.y=start.y+segment.y-arc.y;
7077  degrees.x=90.0;
7078  degrees.y=180.0;
7079  if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7080  return(MagickFalse);
7081  p=(*mvg_info->primitive_info)+mvg_info->offset;
7082  mvg_info->offset+=p->coordinates;
7083  point.x=start.x+arc.x;
7084  point.y=start.y+arc.y;
7085  degrees.x=180.0;
7086  degrees.y=270.0;
7087  if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7088  return(MagickFalse);
7089  p=(*mvg_info->primitive_info)+mvg_info->offset;
7090  mvg_info->offset+=p->coordinates;
7091  if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
7092  return(MagickFalse);
7093  p=(*mvg_info->primitive_info)+mvg_info->offset;
7094  if (TracePoint(p,(*mvg_info->primitive_info+offset)->point) == MagickFalse)
7095  return(MagickFalse);
7096  p+=p->coordinates;
7097  mvg_info->offset=offset;
7098  primitive_info=(*mvg_info->primitive_info)+offset;
7099  primitive_info->coordinates=(size_t) (p-primitive_info);
7100  primitive_info->closed_subpath=MagickTrue;
7101  for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
7102  {
7103  p->primitive=primitive_info->primitive;
7104  p--;
7105  }
7106  return(MagickTrue);
7107 }
7108 
7109 static MagickBooleanType TraceSquareLinecap(PrimitiveInfo *primitive_info,
7110  const size_t number_vertices,const double offset)
7111 {
7112  double
7113  distance;
7114 
7115  double
7116  dx,
7117  dy;
7118 
7119  ssize_t
7120  i;
7121 
7122  ssize_t
7123  j;
7124 
7125  dx=0.0;
7126  dy=0.0;
7127  for (i=1; i < (ssize_t) number_vertices; i++)
7128  {
7129  dx=primitive_info[0].point.x-primitive_info[i].point.x;
7130  dy=primitive_info[0].point.y-primitive_info[i].point.y;
7131  if ((fabs((double) dx) >= MagickEpsilon) ||
7132  (fabs((double) dy) >= MagickEpsilon))
7133  break;
7134  }
7135  if (i == (ssize_t) number_vertices)
7136  i=(ssize_t) number_vertices-1L;
7137  distance=hypot((double) dx,(double) dy);
7138  primitive_info[0].point.x=(double) (primitive_info[i].point.x+
7139  dx*(distance+offset)/distance);
7140  primitive_info[0].point.y=(double) (primitive_info[i].point.y+
7141  dy*(distance+offset)/distance);
7142  for (j=(ssize_t) number_vertices-2; j >= 0; j--)
7143  {
7144  dx=primitive_info[number_vertices-1].point.x-primitive_info[j].point.x;
7145  dy=primitive_info[number_vertices-1].point.y-primitive_info[j].point.y;
7146  if ((fabs((double) dx) >= MagickEpsilon) ||
7147  (fabs((double) dy) >= MagickEpsilon))
7148  break;
7149  }
7150  distance=hypot((double) dx,(double) dy);
7151  primitive_info[number_vertices-1].point.x=(double) (primitive_info[j].point.x+
7152  dx*(distance+offset)/distance);
7153  primitive_info[number_vertices-1].point.y=(double) (primitive_info[j].point.y+
7154  dy*(distance+offset)/distance);
7155  return(MagickTrue);
7156 }
7157 
7158 static PrimitiveInfo *TraceStrokePolygon(const DrawInfo *draw_info,
7159  const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
7160 {
7161 #define MaxStrokePad (6*BezierQuantum+360)
7162 #define CheckPathExtent(pad_p,pad_q) \
7163 { \
7164  if ((pad_p) > MaxBezierCoordinates) \
7165  stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7166  else \
7167  if ((ssize_t) (p+(pad_p)) >= (ssize_t) extent_p) \
7168  { \
7169  if (~extent_p < (pad_p)) \
7170  stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7171  else \
7172  { \
7173  extent_p+=(pad_p); \
7174  stroke_p=(PointInfo *) ResizeQuantumMemory(stroke_p,extent_p+ \
7175  MaxStrokePad,sizeof(*stroke_p)); \
7176  } \
7177  } \
7178  if ((pad_q) > MaxBezierCoordinates) \
7179  stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7180  else \
7181  if ((ssize_t) (q+(pad_q)) >= (ssize_t) extent_q) \
7182  { \
7183  if (~extent_q < (pad_q)) \
7184  stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7185  else \
7186  { \
7187  extent_q+=(pad_q); \
7188  stroke_q=(PointInfo *) ResizeQuantumMemory(stroke_q,extent_q+ \
7189  MaxStrokePad,sizeof(*stroke_q)); \
7190  } \
7191  } \
7192  if ((stroke_p == (PointInfo *) NULL) || (stroke_q == (PointInfo *) NULL)) \
7193  { \
7194  if (stroke_p != (PointInfo *) NULL) \
7195  stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7196  if (stroke_q != (PointInfo *) NULL) \
7197  stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7198  polygon_primitive=(PrimitiveInfo *) \
7199  RelinquishMagickMemory(polygon_primitive); \
7200  (void) ThrowMagickException(exception,GetMagickModule(), \
7201  ResourceLimitError,"MemoryAllocationFailed","`%s'",""); \
7202  return((PrimitiveInfo *) NULL); \
7203  } \
7204 }
7205 
7206  typedef struct _StrokeSegment
7207  {
7208  double
7209  p,
7210  q;
7211  } StrokeSegment;
7212 
7213  double
7214  delta_theta,
7215  dot_product,
7216  mid,
7217  miterlimit;
7218 
7219  MagickBooleanType
7220  closed_path;
7221 
7222  PointInfo
7223  box_p[5],
7224  box_q[5],
7225  center,
7226  offset,
7227  *stroke_p,
7228  *stroke_q;
7229 
7231  *polygon_primitive,
7232  *stroke_polygon;
7233 
7234  ssize_t
7235  i;
7236 
7237  size_t
7238  arc_segments,
7239  extent_p,
7240  extent_q,
7241  number_vertices;
7242 
7243  ssize_t
7244  j,
7245  n,
7246  p,
7247  q;
7248 
7249  StrokeSegment
7250  dx = {0.0, 0.0},
7251  dy = {0.0, 0.0},
7252  inverse_slope = {0.0, 0.0},
7253  slope = {0.0, 0.0},
7254  theta = {0.0, 0.0};
7255 
7256  /*
7257  Allocate paths.
7258  */
7259  number_vertices=primitive_info->coordinates;
7260  polygon_primitive=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
7261  number_vertices+2UL,sizeof(*polygon_primitive));
7262  if (polygon_primitive == (PrimitiveInfo *) NULL)
7263  {
7264  (void) ThrowMagickException(exception,GetMagickModule(),
7265  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7266  return((PrimitiveInfo *) NULL);
7267  }
7268  (void) memcpy(polygon_primitive,primitive_info,(size_t) number_vertices*
7269  sizeof(*polygon_primitive));
7270  offset.x=primitive_info[number_vertices-1].point.x-primitive_info[0].point.x;
7271  offset.y=primitive_info[number_vertices-1].point.y-primitive_info[0].point.y;
7272  closed_path=(fabs(offset.x) < MagickEpsilon) &&
7273  (fabs(offset.y) < MagickEpsilon) ? MagickTrue : MagickFalse;
7274  if (((draw_info->linejoin == RoundJoin) ||
7275  (draw_info->linejoin == MiterJoin)) && (closed_path != MagickFalse))
7276  {
7277  polygon_primitive[number_vertices]=primitive_info[1];
7278  number_vertices++;
7279  }
7280  polygon_primitive[number_vertices].primitive=UndefinedPrimitive;
7281  /*
7282  Compute the slope for the first line segment, p.
7283  */
7284  dx.p=0.0;
7285  dy.p=0.0;
7286  for (n=1; n < (ssize_t) number_vertices; n++)
7287  {
7288  dx.p=polygon_primitive[n].point.x-polygon_primitive[0].point.x;
7289  dy.p=polygon_primitive[n].point.y-polygon_primitive[0].point.y;
7290  if ((fabs(dx.p) >= MagickEpsilon) || (fabs(dy.p) >= MagickEpsilon))
7291  break;
7292  }
7293  if (n == (ssize_t) number_vertices)
7294  {
7295  if ((draw_info->linecap != RoundCap) || (closed_path != MagickFalse))
7296  {
7297  /*
7298  Zero length subpath.
7299  */
7300  stroke_polygon=(PrimitiveInfo *) AcquireCriticalMemory(
7301  sizeof(*stroke_polygon));
7302  stroke_polygon[0]=polygon_primitive[0];
7303  stroke_polygon[0].coordinates=0;
7304  polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(
7305  polygon_primitive);
7306  return(stroke_polygon);
7307  }
7308  n=(ssize_t) number_vertices-1L;
7309  }
7310  extent_p=2*number_vertices;
7311  extent_q=2*number_vertices;
7312  stroke_p=(PointInfo *) AcquireQuantumMemory((size_t) extent_p+MaxStrokePad,
7313  sizeof(*stroke_p));
7314  stroke_q=(PointInfo *) AcquireQuantumMemory((size_t) extent_q+MaxStrokePad,
7315  sizeof(*stroke_q));
7316  if ((stroke_p == (PointInfo *) NULL) || (stroke_q == (PointInfo *) NULL))
7317  {
7318  if (stroke_p != (PointInfo *) NULL)
7319  stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7320  if (stroke_q != (PointInfo *) NULL)
7321  stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7322  polygon_primitive=(PrimitiveInfo *)
7323  RelinquishMagickMemory(polygon_primitive);
7324  (void) ThrowMagickException(exception,GetMagickModule(),
7325  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7326  return((PrimitiveInfo *) NULL);
7327  }
7328  slope.p=0.0;
7329  inverse_slope.p=0.0;
7330  if (fabs(dx.p) < MagickEpsilon)
7331  {
7332  if (dx.p >= 0.0)
7333  slope.p=dy.p < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7334  else
7335  slope.p=dy.p < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7336  }
7337  else
7338  if (fabs(dy.p) < MagickEpsilon)
7339  {
7340  if (dy.p >= 0.0)
7341  inverse_slope.p=dx.p < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7342  else
7343  inverse_slope.p=dx.p < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7344  }
7345  else
7346  {
7347  slope.p=dy.p/dx.p;
7348  inverse_slope.p=(-1.0*PerceptibleReciprocal(slope.p));
7349  }
7350  mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
7351  miterlimit=(double) (draw_info->miterlimit*draw_info->miterlimit*mid*mid);
7352  if ((draw_info->linecap == SquareCap) && (closed_path == MagickFalse))
7353  (void) TraceSquareLinecap(polygon_primitive,number_vertices,mid);
7354  offset.x=sqrt((double) (mid*mid/(inverse_slope.p*inverse_slope.p+1.0)));
7355  offset.y=(double) (offset.x*inverse_slope.p);
7356  if ((dy.p*offset.x-dx.p*offset.y) > 0.0)
7357  {
7358  box_p[0].x=polygon_primitive[0].point.x-offset.x;
7359  box_p[0].y=polygon_primitive[0].point.y-offset.x*inverse_slope.p;
7360  box_p[1].x=polygon_primitive[n].point.x-offset.x;
7361  box_p[1].y=polygon_primitive[n].point.y-offset.x*inverse_slope.p;
7362  box_q[0].x=polygon_primitive[0].point.x+offset.x;
7363  box_q[0].y=polygon_primitive[0].point.y+offset.x*inverse_slope.p;
7364  box_q[1].x=polygon_primitive[n].point.x+offset.x;
7365  box_q[1].y=polygon_primitive[n].point.y+offset.x*inverse_slope.p;
7366  }
7367  else
7368  {
7369  box_p[0].x=polygon_primitive[0].point.x+offset.x;
7370  box_p[0].y=polygon_primitive[0].point.y+offset.y;
7371  box_p[1].x=polygon_primitive[n].point.x+offset.x;
7372  box_p[1].y=polygon_primitive[n].point.y+offset.y;
7373  box_q[0].x=polygon_primitive[0].point.x-offset.x;
7374  box_q[0].y=polygon_primitive[0].point.y-offset.y;
7375  box_q[1].x=polygon_primitive[n].point.x-offset.x;
7376  box_q[1].y=polygon_primitive[n].point.y-offset.y;
7377  }
7378  /*
7379  Create strokes for the line join attribute: bevel, miter, round.
7380  */
7381  p=0;
7382  q=0;
7383  stroke_q[p++]=box_q[0];
7384  stroke_p[q++]=box_p[0];
7385  for (i=(ssize_t) n+1; i < (ssize_t) number_vertices; i++)
7386  {
7387  /*
7388  Compute the slope for this line segment, q.
7389  */
7390  dx.q=polygon_primitive[i].point.x-polygon_primitive[n].point.x;
7391  dy.q=polygon_primitive[i].point.y-polygon_primitive[n].point.y;
7392  dot_product=dx.q*dx.q+dy.q*dy.q;
7393  if (dot_product < 0.25)
7394  continue;
7395  slope.q=0.0;
7396  inverse_slope.q=0.0;
7397  if (fabs(dx.q) < MagickEpsilon)
7398  {
7399  if (dx.q >= 0.0)
7400  slope.q=dy.q < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7401  else
7402  slope.q=dy.q < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7403  }
7404  else
7405  if (fabs(dy.q) < MagickEpsilon)
7406  {
7407  if (dy.q >= 0.0)
7408  inverse_slope.q=dx.q < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7409  else
7410  inverse_slope.q=dx.q < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7411  }
7412  else
7413  {
7414  slope.q=dy.q/dx.q;
7415  inverse_slope.q=(-1.0*PerceptibleReciprocal(slope.q));
7416  }
7417  offset.x=sqrt((double) (mid*mid/(inverse_slope.q*inverse_slope.q+1.0)));
7418  offset.y=(double) (offset.x*inverse_slope.q);
7419  dot_product=dy.q*offset.x-dx.q*offset.y;
7420  if (dot_product > 0.0)
7421  {
7422  box_p[2].x=polygon_primitive[n].point.x-offset.x;
7423  box_p[2].y=polygon_primitive[n].point.y-offset.y;
7424  box_p[3].x=polygon_primitive[i].point.x-offset.x;
7425  box_p[3].y=polygon_primitive[i].point.y-offset.y;
7426  box_q[2].x=polygon_primitive[n].point.x+offset.x;
7427  box_q[2].y=polygon_primitive[n].point.y+offset.y;
7428  box_q[3].x=polygon_primitive[i].point.x+offset.x;
7429  box_q[3].y=polygon_primitive[i].point.y+offset.y;
7430  }
7431  else
7432  {
7433  box_p[2].x=polygon_primitive[n].point.x+offset.x;
7434  box_p[2].y=polygon_primitive[n].point.y+offset.y;
7435  box_p[3].x=polygon_primitive[i].point.x+offset.x;
7436  box_p[3].y=polygon_primitive[i].point.y+offset.y;
7437  box_q[2].x=polygon_primitive[n].point.x-offset.x;
7438  box_q[2].y=polygon_primitive[n].point.y-offset.y;
7439  box_q[3].x=polygon_primitive[i].point.x-offset.x;
7440  box_q[3].y=polygon_primitive[i].point.y-offset.y;
7441  }
7442  if (fabs((double) (slope.p-slope.q)) < MagickEpsilon)
7443  {
7444  box_p[4]=box_p[1];
7445  box_q[4]=box_q[1];
7446  }
7447  else
7448  {
7449  box_p[4].x=(double) ((slope.p*box_p[0].x-box_p[0].y-slope.q*box_p[3].x+
7450  box_p[3].y)/(slope.p-slope.q));
7451  box_p[4].y=(double) (slope.p*(box_p[4].x-box_p[0].x)+box_p[0].y);
7452  box_q[4].x=(double) ((slope.p*box_q[0].x-box_q[0].y-slope.q*box_q[3].x+
7453  box_q[3].y)/(slope.p-slope.q));
7454  box_q[4].y=(double) (slope.p*(box_q[4].x-box_q[0].x)+box_q[0].y);
7455  }
7456  CheckPathExtent(MaxStrokePad,MaxStrokePad);
7457  dot_product=dx.q*dy.p-dx.p*dy.q;
7458  if (dot_product <= 0.0)
7459  switch (draw_info->linejoin)
7460  {
7461  case BevelJoin:
7462  {
7463  stroke_q[q++]=box_q[1];
7464  stroke_q[q++]=box_q[2];
7465  dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7466  (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7467  if (dot_product <= miterlimit)
7468  stroke_p[p++]=box_p[4];
7469  else
7470  {
7471  stroke_p[p++]=box_p[1];
7472  stroke_p[p++]=box_p[2];
7473  }
7474  break;
7475  }
7476  case MiterJoin:
7477  {
7478  dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7479  (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7480  if (dot_product <= miterlimit)
7481  {
7482  stroke_q[q++]=box_q[4];
7483  stroke_p[p++]=box_p[4];
7484  }
7485  else
7486  {
7487  stroke_q[q++]=box_q[1];
7488  stroke_q[q++]=box_q[2];
7489  stroke_p[p++]=box_p[1];
7490  stroke_p[p++]=box_p[2];
7491  }
7492  break;
7493  }
7494  case RoundJoin:
7495  {
7496  dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7497  (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7498  if (dot_product <= miterlimit)
7499  stroke_p[p++]=box_p[4];
7500  else
7501  {
7502  stroke_p[p++]=box_p[1];
7503  stroke_p[p++]=box_p[2];
7504  }
7505  center=polygon_primitive[n].point;
7506  theta.p=atan2(box_q[1].y-center.y,box_q[1].x-center.x);
7507  theta.q=atan2(box_q[2].y-center.y,box_q[2].x-center.x);
7508  if (theta.q < theta.p)
7509  theta.q+=2.0*MagickPI;
7510  arc_segments=(size_t) CastDoubleToLong(ceil((double) ((theta.q-
7511  theta.p)/(2.0*sqrt(PerceptibleReciprocal(mid))))));
7512  CheckPathExtent(MaxStrokePad,arc_segments+MaxStrokePad);
7513  stroke_q[q].x=box_q[1].x;
7514  stroke_q[q].y=box_q[1].y;
7515  q++;
7516  for (j=1; j < (ssize_t) arc_segments; j++)
7517  {
7518  delta_theta=(double) (j*(theta.q-theta.p)/arc_segments);
7519  stroke_q[q].x=(double) (center.x+mid*cos(fmod((double)
7520  (theta.p+delta_theta),DegreesToRadians(360.0))));
7521  stroke_q[q].y=(double) (center.y+mid*sin(fmod((double)
7522  (theta.p+delta_theta),DegreesToRadians(360.0))));
7523  q++;
7524  }
7525  stroke_q[q++]=box_q[2];
7526  break;
7527  }
7528  default:
7529  break;
7530  }
7531  else
7532  switch (draw_info->linejoin)
7533  {
7534  case BevelJoin:
7535  {
7536  stroke_p[p++]=box_p[1];
7537  stroke_p[p++]=box_p[2];
7538  dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7539  (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7540  if (dot_product <= miterlimit)
7541  stroke_q[q++]=box_q[4];
7542  else
7543  {
7544  stroke_q[q++]=box_q[1];
7545  stroke_q[q++]=box_q[2];
7546  }
7547  break;
7548  }
7549  case MiterJoin:
7550  {
7551  dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7552  (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7553  if (dot_product <= miterlimit)
7554  {
7555  stroke_q[q++]=box_q[4];
7556  stroke_p[p++]=box_p[4];
7557  }
7558  else
7559  {
7560  stroke_q[q++]=box_q[1];
7561  stroke_q[q++]=box_q[2];
7562  stroke_p[p++]=box_p[1];
7563  stroke_p[p++]=box_p[2];
7564  }
7565  break;
7566  }
7567  case RoundJoin:
7568  {
7569  dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7570  (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7571  if (dot_product <= miterlimit)
7572  stroke_q[q++]=box_q[4];
7573  else
7574  {
7575  stroke_q[q++]=box_q[1];
7576  stroke_q[q++]=box_q[2];
7577  }
7578  center=polygon_primitive[n].point;
7579  theta.p=atan2(box_p[1].y-center.y,box_p[1].x-center.x);
7580  theta.q=atan2(box_p[2].y-center.y,box_p[2].x-center.x);
7581  if (theta.p < theta.q)
7582  theta.p+=2.0*MagickPI;
7583  arc_segments=(size_t) CastDoubleToLong(ceil((double) ((theta.p-
7584  theta.q)/(2.0*sqrt((double) (PerceptibleReciprocal(mid)))))));
7585  CheckPathExtent(arc_segments+MaxStrokePad,MaxStrokePad);
7586  stroke_p[p++]=box_p[1];
7587  for (j=1; j < (ssize_t) arc_segments; j++)
7588  {
7589  delta_theta=(double) (j*(theta.q-theta.p)/arc_segments);
7590  stroke_p[p].x=(double) (center.x+mid*cos(fmod((double)
7591  (theta.p+delta_theta),DegreesToRadians(360.0))));
7592  stroke_p[p].y=(double) (center.y+mid*sin(fmod((double)
7593  (theta.p+delta_theta),DegreesToRadians(360.0))));
7594  p++;
7595  }
7596  stroke_p[p++]=box_p[2];
7597  break;
7598  }
7599  default:
7600  break;
7601  }
7602  slope.p=slope.q;
7603  inverse_slope.p=inverse_slope.q;
7604  box_p[0]=box_p[2];
7605  box_p[1]=box_p[3];
7606  box_q[0]=box_q[2];
7607  box_q[1]=box_q[3];
7608  dx.p=dx.q;
7609  dy.p=dy.q;
7610  n=i;
7611  }
7612  stroke_p[p++]=box_p[1];
7613  stroke_q[q++]=box_q[1];
7614  /*
7615  Trace stroked polygon.
7616  */
7617  stroke_polygon=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
7618  (p+q+2UL*closed_path+2UL),sizeof(*stroke_polygon));
7619  if (stroke_polygon == (PrimitiveInfo *) NULL)
7620  {
7621  (void) ThrowMagickException(exception,GetMagickModule(),
7622  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7623  stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7624  stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7625  polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(
7626  polygon_primitive);
7627  return(stroke_polygon);
7628  }
7629  for (i=0; i < (ssize_t) p; i++)
7630  {
7631  stroke_polygon[i]=polygon_primitive[0];
7632  stroke_polygon[i].point=stroke_p[i];
7633  }
7634  if (closed_path != MagickFalse)
7635  {
7636  stroke_polygon[i]=polygon_primitive[0];
7637  stroke_polygon[i].point=stroke_polygon[0].point;
7638  i++;
7639  }
7640  for ( ; i < (ssize_t) (p+q+closed_path); i++)
7641  {
7642  stroke_polygon[i]=polygon_primitive[0];
7643  stroke_polygon[i].point=stroke_q[p+q+closed_path-(i+1)];
7644  }
7645  if (closed_path != MagickFalse)
7646  {
7647  stroke_polygon[i]=polygon_primitive[0];
7648  stroke_polygon[i].point=stroke_polygon[p+closed_path].point;
7649  i++;
7650  }
7651  stroke_polygon[i]=polygon_primitive[0];
7652  stroke_polygon[i].point=stroke_polygon[0].point;
7653  i++;
7654  stroke_polygon[i].primitive=UndefinedPrimitive;
7655  stroke_polygon[0].coordinates=(size_t) (p+q+2*closed_path+1);
7656  stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7657  stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7658  polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(polygon_primitive);
7659  return(stroke_polygon);
7660 }
Definition: draw.c:143
Definition: image.h:152