MagickCore  7.0.8
Convert, Edit, Or Compose Bitmap Images
draw.c
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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 1999-2018 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 "MagickCore/studio.h"
49 #include "MagickCore/annotate.h"
50 #include "MagickCore/artifact.h"
51 #include "MagickCore/blob.h"
52 #include "MagickCore/cache.h"
54 #include "MagickCore/cache-view.h"
55 #include "MagickCore/channel.h"
56 #include "MagickCore/color.h"
58 #include "MagickCore/composite.h"
60 #include "MagickCore/constitute.h"
61 #include "MagickCore/draw.h"
63 #include "MagickCore/enhance.h"
64 #include "MagickCore/exception.h"
66 #include "MagickCore/gem.h"
67 #include "MagickCore/geometry.h"
69 #include "MagickCore/list.h"
70 #include "MagickCore/log.h"
72 #include "MagickCore/monitor.h"
74 #include "MagickCore/option.h"
75 #include "MagickCore/paint.h"
78 #include "MagickCore/property.h"
79 #include "MagickCore/resample.h"
81 #include "MagickCore/resource_.h"
82 #include "MagickCore/splay-tree.h"
83 #include "MagickCore/string_.h"
86 #include "MagickCore/token.h"
88 #include "MagickCore/utility.h"
89 
90 /*
91  Define declarations.
92 */
93 #define BezierQuantum 200
94 #define PrimitiveExtentPad 128
95 #define MaxBezierCoordinates 4194304
96 #define ThrowPointExpectedException(token,exception) \
97 { \
98  (void) ThrowMagickException(exception,GetMagickModule(),DrawError, \
99  "NonconformingDrawingPrimitiveDefinition","`%s'",token); \
100  status=MagickFalse; \
101  break; \
102 }
103 
104 /*
105  Typedef declarations.
106 */
107 typedef struct _EdgeInfo
108 {
111 
112  double
114 
115  PointInfo
117 
118  size_t
120 
121  ssize_t
123 
126 
127  size_t
129 } EdgeInfo;
130 
131 typedef struct _ElementInfo
132 {
133  double
134  cx,
135  cy,
136  major,
137  minor,
138  angle;
139 } ElementInfo;
140 
141 typedef struct _MVGInfo
142 {
145 
146  size_t
148 
149  ssize_t
151 
152  PointInfo
154 
157 } MVGInfo;
158 
159 typedef struct _PolygonInfo
160 {
161  EdgeInfo
163 
164  size_t
166 } PolygonInfo;
167 
168 typedef enum
169 {
175 } PathInfoCode;
176 
177 typedef struct _PathInfo
178 {
179  PointInfo
181 
184 } PathInfo;
185 
186 /*
187  Forward declarations.
188 */
189 static Image
190  *DrawClippingMask(Image *,const DrawInfo *,const char *,const char *,
191  ExceptionInfo *);
192 
193 static MagickBooleanType
194  DrawStrokePolygon(Image *,const DrawInfo *,const PrimitiveInfo *,
195  ExceptionInfo *),
196  RenderMVGContent(Image *,const DrawInfo *,const size_t,ExceptionInfo *),
197  TraceArc(MVGInfo *,const PointInfo,const PointInfo,const PointInfo),
198  TraceArcPath(MVGInfo *,const PointInfo,const PointInfo,const PointInfo,
199  const double,const MagickBooleanType,const MagickBooleanType),
200  TraceBezier(MVGInfo *,const size_t),
201  TraceCircle(MVGInfo *,const PointInfo,const PointInfo),
202  TraceEllipse(MVGInfo *,const PointInfo,const PointInfo,const PointInfo),
206  TraceSquareLinecap(PrimitiveInfo *,const size_t,const double);
207 
208 static PrimitiveInfo
209  *TraceStrokePolygon(const Image *,const DrawInfo *,const PrimitiveInfo *);
210 
211 static size_t
212  TracePath(MVGInfo *,const char *,ExceptionInfo *);
213 
214 /*
215 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
216 % %
217 % %
218 % %
219 % A c q u i r e D r a w I n f o %
220 % %
221 % %
222 % %
223 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
224 %
225 % AcquireDrawInfo() returns a DrawInfo structure properly initialized.
226 %
227 % The format of the AcquireDrawInfo method is:
228 %
229 % DrawInfo *AcquireDrawInfo(void)
230 %
231 */
233 {
234  DrawInfo
235  *draw_info;
236 
237  draw_info=(DrawInfo *) AcquireCriticalMemory(sizeof(*draw_info));
238  GetDrawInfo((ImageInfo *) NULL,draw_info);
239  return(draw_info);
240 }
241 
242 /*
243 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
244 % %
245 % %
246 % %
247 % C l o n e D r a w I n f o %
248 % %
249 % %
250 % %
251 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
252 %
253 % CloneDrawInfo() makes a copy of the given draw_info structure. If NULL
254 % is specified, a new DrawInfo structure is created initialized to default
255 % values.
256 %
257 % The format of the CloneDrawInfo method is:
258 %
259 % DrawInfo *CloneDrawInfo(const ImageInfo *image_info,
260 % const DrawInfo *draw_info)
261 %
262 % A description of each parameter follows:
263 %
264 % o image_info: the image info.
265 %
266 % o draw_info: the draw info.
267 %
268 */
270  const DrawInfo *draw_info)
271 {
272  DrawInfo
273  *clone_info;
274 
276  *exception;
277 
278  clone_info=(DrawInfo *) AcquireCriticalMemory(sizeof(*clone_info));
279  GetDrawInfo(image_info,clone_info);
280  if (draw_info == (DrawInfo *) NULL)
281  return(clone_info);
282  exception=AcquireExceptionInfo();
283  if (draw_info->primitive != (char *) NULL)
284  (void) CloneString(&clone_info->primitive,draw_info->primitive);
285  if (draw_info->geometry != (char *) NULL)
286  (void) CloneString(&clone_info->geometry,draw_info->geometry);
287  clone_info->compliance=draw_info->compliance;
288  clone_info->viewbox=draw_info->viewbox;
289  clone_info->affine=draw_info->affine;
290  clone_info->gravity=draw_info->gravity;
291  clone_info->fill=draw_info->fill;
292  clone_info->stroke=draw_info->stroke;
293  clone_info->stroke_width=draw_info->stroke_width;
294  if (draw_info->fill_pattern != (Image *) NULL)
295  clone_info->fill_pattern=CloneImage(draw_info->fill_pattern,0,0,MagickTrue,
296  exception);
297  if (draw_info->stroke_pattern != (Image *) NULL)
298  clone_info->stroke_pattern=CloneImage(draw_info->stroke_pattern,0,0,
299  MagickTrue,exception);
300  clone_info->stroke_antialias=draw_info->stroke_antialias;
301  clone_info->text_antialias=draw_info->text_antialias;
302  clone_info->fill_rule=draw_info->fill_rule;
303  clone_info->linecap=draw_info->linecap;
304  clone_info->linejoin=draw_info->linejoin;
305  clone_info->miterlimit=draw_info->miterlimit;
306  clone_info->dash_offset=draw_info->dash_offset;
307  clone_info->decorate=draw_info->decorate;
308  clone_info->compose=draw_info->compose;
309  if (draw_info->text != (char *) NULL)
310  (void) CloneString(&clone_info->text,draw_info->text);
311  if (draw_info->font != (char *) NULL)
312  (void) CloneString(&clone_info->font,draw_info->font);
313  if (draw_info->metrics != (char *) NULL)
314  (void) CloneString(&clone_info->metrics,draw_info->metrics);
315  if (draw_info->family != (char *) NULL)
316  (void) CloneString(&clone_info->family,draw_info->family);
317  clone_info->style=draw_info->style;
318  clone_info->stretch=draw_info->stretch;
319  clone_info->weight=draw_info->weight;
320  if (draw_info->encoding != (char *) NULL)
321  (void) CloneString(&clone_info->encoding,draw_info->encoding);
322  clone_info->pointsize=draw_info->pointsize;
323  clone_info->kerning=draw_info->kerning;
324  clone_info->interline_spacing=draw_info->interline_spacing;
325  clone_info->interword_spacing=draw_info->interword_spacing;
326  clone_info->direction=draw_info->direction;
327  if (draw_info->density != (char *) NULL)
328  (void) CloneString(&clone_info->density,draw_info->density);
329  clone_info->align=draw_info->align;
330  clone_info->undercolor=draw_info->undercolor;
331  clone_info->border_color=draw_info->border_color;
332  if (draw_info->server_name != (char *) NULL)
333  (void) CloneString(&clone_info->server_name,draw_info->server_name);
334  if (draw_info->dash_pattern != (double *) NULL)
335  {
336  register ssize_t
337  x;
338 
339  for (x=0; fabs(draw_info->dash_pattern[x]) >= MagickEpsilon; x++) ;
340  clone_info->dash_pattern=(double *) AcquireQuantumMemory((size_t) (x+4),
341  sizeof(*clone_info->dash_pattern));
342  if (clone_info->dash_pattern == (double *) NULL)
344  "UnableToAllocateDashPattern");
345  (void) memcpy(clone_info->dash_pattern,draw_info->dash_pattern,(size_t)
346  (x+4)*sizeof(*clone_info->dash_pattern));
347  }
348  clone_info->gradient=draw_info->gradient;
349  if (draw_info->gradient.stops != (StopInfo *) NULL)
350  {
351  size_t
352  number_stops;
353 
354  number_stops=clone_info->gradient.number_stops;
355  clone_info->gradient.stops=(StopInfo *) AcquireQuantumMemory((size_t)
356  number_stops,sizeof(*clone_info->gradient.stops));
357  if (clone_info->gradient.stops == (StopInfo *) NULL)
359  "UnableToAllocateDashPattern");
360  (void) memcpy(clone_info->gradient.stops,draw_info->gradient.stops,
361  (size_t) number_stops*sizeof(*clone_info->gradient.stops));
362  }
363  clone_info->bounds=draw_info->bounds;
364  clone_info->fill_alpha=draw_info->fill_alpha;
365  clone_info->stroke_alpha=draw_info->stroke_alpha;
366  clone_info->element_reference=draw_info->element_reference;
367  clone_info->clip_path=draw_info->clip_path;
368  clone_info->clip_units=draw_info->clip_units;
369  if (draw_info->clip_mask != (char *) NULL)
370  (void) CloneString(&clone_info->clip_mask,draw_info->clip_mask);
371  if (draw_info->clipping_mask != (Image *) NULL)
372  clone_info->clipping_mask=CloneImage(draw_info->clipping_mask,0,0,
373  MagickTrue,exception);
374  if (draw_info->composite_mask != (Image *) NULL)
375  clone_info->composite_mask=CloneImage(draw_info->composite_mask,0,0,
376  MagickTrue,exception);
377  clone_info->render=draw_info->render;
378  clone_info->debug=IsEventLogging();
379  exception=DestroyExceptionInfo(exception);
380  return(clone_info);
381 }
382 
383 /*
384 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
385 % %
386 % %
387 % %
388 + C o n v e r t P a t h T o P o l y g o n %
389 % %
390 % %
391 % %
392 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
393 %
394 % ConvertPathToPolygon() converts a path to the more efficient sorted
395 % rendering form.
396 %
397 % The format of the ConvertPathToPolygon method is:
398 %
399 % PolygonInfo *ConvertPathToPolygon(const PathInfo *path_info)
400 %
401 % A description of each parameter follows:
402 %
403 % o Method ConvertPathToPolygon returns the path in a more efficient sorted
404 % rendering form of type PolygonInfo.
405 %
406 % o draw_info: Specifies a pointer to an DrawInfo structure.
407 %
408 % o path_info: Specifies a pointer to an PathInfo structure.
409 %
410 %
411 */
412 
413 #if defined(__cplusplus) || defined(c_plusplus)
414 extern "C" {
415 #endif
416 
417 static int DrawCompareEdges(const void *p_edge,const void *q_edge)
418 {
419 #define DrawCompareEdge(p,q) \
420 { \
421  if (((p)-(q)) < 0.0) \
422  return(-1); \
423  if (((p)-(q)) > 0.0) \
424  return(1); \
425 }
426 
427  register const PointInfo
428  *p,
429  *q;
430 
431  /*
432  Edge sorting for right-handed coordinate system.
433  */
434  p=((const EdgeInfo *) p_edge)->points;
435  q=((const EdgeInfo *) q_edge)->points;
436  DrawCompareEdge(p[0].y,q[0].y);
437  DrawCompareEdge(p[0].x,q[0].x);
438  DrawCompareEdge((p[1].x-p[0].x)*(q[1].y-q[0].y),(p[1].y-p[0].y)*
439  (q[1].x-q[0].x));
440  DrawCompareEdge(p[1].y,q[1].y);
441  DrawCompareEdge(p[1].x,q[1].x);
442  return(0);
443 }
444 
445 #if defined(__cplusplus) || defined(c_plusplus)
446 }
447 #endif
448 
449 static void LogPolygonInfo(const PolygonInfo *polygon_info)
450 {
451  register EdgeInfo
452  *p;
453 
454  register ssize_t
455  i,
456  j;
457 
458  (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin active-edge");
459  p=polygon_info->edges;
460  for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
461  {
462  (void) LogMagickEvent(DrawEvent,GetMagickModule()," edge %.20g:",
463  (double) i);
464  (void) LogMagickEvent(DrawEvent,GetMagickModule()," direction: %s",
465  p->direction != MagickFalse ? "down" : "up");
466  (void) LogMagickEvent(DrawEvent,GetMagickModule()," ghostline: %s",
467  p->ghostline != MagickFalse ? "transparent" : "opaque");
469  " bounds: %g,%g - %g,%g",p->bounds.x1,p->bounds.y1,
470  p->bounds.x2,p->bounds.y2);
471  for (j=0; j < (ssize_t) p->number_points; j++)
472  (void) LogMagickEvent(DrawEvent,GetMagickModule()," %g,%g",
473  p->points[j].x,p->points[j].y);
474  p++;
475  }
476  (void) LogMagickEvent(DrawEvent,GetMagickModule()," end active-edge");
477 }
478 
479 static void ReversePoints(PointInfo *points,const size_t number_points)
480 {
481  PointInfo
482  point;
483 
484  register ssize_t
485  i;
486 
487  for (i=0; i < (ssize_t) (number_points >> 1); i++)
488  {
489  point=points[i];
490  points[i]=points[number_points-(i+1)];
491  points[number_points-(i+1)]=point;
492  }
493 }
494 
495 static PolygonInfo *ConvertPathToPolygon(const PathInfo *path_info)
496 {
497  long
498  direction,
499  next_direction;
500 
501  PointInfo
502  point,
503  *points;
504 
506  *polygon_info;
507 
509  bounds;
510 
511  register ssize_t
512  i,
513  n;
514 
516  ghostline;
517 
518  size_t
519  edge,
520  number_edges,
521  number_points;
522 
523  /*
524  Convert a path to the more efficient sorted rendering form.
525  */
526  polygon_info=(PolygonInfo *) AcquireMagickMemory(sizeof(*polygon_info));
527  if (polygon_info == (PolygonInfo *) NULL)
528  return((PolygonInfo *) NULL);
529  number_edges=16;
530  polygon_info->edges=(EdgeInfo *) AcquireQuantumMemory(number_edges,
531  sizeof(*polygon_info->edges));
532  if (polygon_info->edges == (EdgeInfo *) NULL)
533  return((PolygonInfo *) NULL);
534  (void) memset(polygon_info->edges,0,number_edges*
535  sizeof(*polygon_info->edges));
536  direction=0;
537  edge=0;
538  ghostline=MagickFalse;
539  n=0;
540  number_points=0;
541  points=(PointInfo *) NULL;
542  (void) memset(&point,0,sizeof(point));
543  (void) memset(&bounds,0,sizeof(bounds));
544  polygon_info->edges[edge].number_points=(size_t) n;
545  polygon_info->edges[edge].scanline=0.0;
546  polygon_info->edges[edge].highwater=0;
547  polygon_info->edges[edge].ghostline=ghostline;
548  polygon_info->edges[edge].direction=(ssize_t) direction;
549  polygon_info->edges[edge].points=points;
550  polygon_info->edges[edge].bounds=bounds;
551  polygon_info->number_edges=0;
552  for (i=0; path_info[i].code != EndCode; i++)
553  {
554  if ((path_info[i].code == MoveToCode) || (path_info[i].code == OpenCode) ||
555  (path_info[i].code == GhostlineCode))
556  {
557  /*
558  Move to.
559  */
560  if ((points != (PointInfo *) NULL) && (n >= 2))
561  {
562  if (edge == number_edges)
563  {
564  number_edges<<=1;
565  polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(
566  polygon_info->edges,(size_t) number_edges,
567  sizeof(*polygon_info->edges));
568  if (polygon_info->edges == (EdgeInfo *) NULL)
569  return((PolygonInfo *) NULL);
570  }
571  polygon_info->edges[edge].number_points=(size_t) n;
572  polygon_info->edges[edge].scanline=(-1.0);
573  polygon_info->edges[edge].highwater=0;
574  polygon_info->edges[edge].ghostline=ghostline;
575  polygon_info->edges[edge].direction=(ssize_t) (direction > 0);
576  if (direction < 0)
577  ReversePoints(points,(size_t) n);
578  polygon_info->edges[edge].points=points;
579  polygon_info->edges[edge].bounds=bounds;
580  polygon_info->edges[edge].bounds.y1=points[0].y;
581  polygon_info->edges[edge].bounds.y2=points[n-1].y;
582  points=(PointInfo *) NULL;
583  ghostline=MagickFalse;
584  edge++;
585  }
586  if (points == (PointInfo *) NULL)
587  {
588  number_points=16;
589  points=(PointInfo *) AcquireQuantumMemory((size_t) number_points,
590  sizeof(*points));
591  if (points == (PointInfo *) NULL)
592  return((PolygonInfo *) NULL);
593  }
594  ghostline=path_info[i].code == GhostlineCode ? MagickTrue : MagickFalse;
595  point=path_info[i].point;
596  points[0]=point;
597  bounds.x1=point.x;
598  bounds.x2=point.x;
599  direction=0;
600  n=1;
601  continue;
602  }
603  /*
604  Line to.
605  */
606  next_direction=((path_info[i].point.y > point.y) ||
607  ((fabs(path_info[i].point.y-point.y) < MagickEpsilon) &&
608  (path_info[i].point.x > point.x))) ? 1 : -1;
609  if ((points != (PointInfo *) NULL) && (direction != 0) &&
610  (direction != next_direction))
611  {
612  /*
613  New edge.
614  */
615  point=points[n-1];
616  if (edge == number_edges)
617  {
618  number_edges<<=1;
619  polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(
620  polygon_info->edges,(size_t) number_edges,
621  sizeof(*polygon_info->edges));
622  if (polygon_info->edges == (EdgeInfo *) NULL)
623  return((PolygonInfo *) NULL);
624  }
625  polygon_info->edges[edge].number_points=(size_t) n;
626  polygon_info->edges[edge].scanline=(-1.0);
627  polygon_info->edges[edge].highwater=0;
628  polygon_info->edges[edge].ghostline=ghostline;
629  polygon_info->edges[edge].direction=(ssize_t) (direction > 0);
630  if (direction < 0)
631  ReversePoints(points,(size_t) n);
632  polygon_info->edges[edge].points=points;
633  polygon_info->edges[edge].bounds=bounds;
634  polygon_info->edges[edge].bounds.y1=points[0].y;
635  polygon_info->edges[edge].bounds.y2=points[n-1].y;
636  number_points=16;
637  points=(PointInfo *) AcquireQuantumMemory((size_t) number_points,
638  sizeof(*points));
639  if (points == (PointInfo *) NULL)
640  return((PolygonInfo *) NULL);
641  n=1;
642  ghostline=MagickFalse;
643  points[0]=point;
644  bounds.x1=point.x;
645  bounds.x2=point.x;
646  edge++;
647  }
648  direction=next_direction;
649  if (points == (PointInfo *) NULL)
650  continue;
651  if (n == (ssize_t) number_points)
652  {
653  number_points<<=1;
654  points=(PointInfo *) ResizeQuantumMemory(points,(size_t) number_points,
655  sizeof(*points));
656  if (points == (PointInfo *) NULL)
657  return((PolygonInfo *) NULL);
658  }
659  point=path_info[i].point;
660  points[n]=point;
661  if (point.x < bounds.x1)
662  bounds.x1=point.x;
663  if (point.x > bounds.x2)
664  bounds.x2=point.x;
665  n++;
666  }
667  if (points != (PointInfo *) NULL)
668  {
669  if (n < 2)
670  points=(PointInfo *) RelinquishMagickMemory(points);
671  else
672  {
673  if (edge == number_edges)
674  {
675  number_edges<<=1;
676  polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(
677  polygon_info->edges,(size_t) number_edges,
678  sizeof(*polygon_info->edges));
679  if (polygon_info->edges == (EdgeInfo *) NULL)
680  return((PolygonInfo *) NULL);
681  }
682  polygon_info->edges[edge].number_points=(size_t) n;
683  polygon_info->edges[edge].scanline=(-1.0);
684  polygon_info->edges[edge].highwater=0;
685  polygon_info->edges[edge].ghostline=ghostline;
686  polygon_info->edges[edge].direction=(ssize_t) (direction > 0);
687  if (direction < 0)
688  ReversePoints(points,(size_t) n);
689  polygon_info->edges[edge].points=points;
690  polygon_info->edges[edge].bounds=bounds;
691  polygon_info->edges[edge].bounds.y1=points[0].y;
692  polygon_info->edges[edge].bounds.y2=points[n-1].y;
693  ghostline=MagickFalse;
694  edge++;
695  }
696  }
697  polygon_info->number_edges=edge;
698  qsort(polygon_info->edges,(size_t) polygon_info->number_edges,
699  sizeof(*polygon_info->edges),DrawCompareEdges);
700  if (IsEventLogging() != MagickFalse)
701  LogPolygonInfo(polygon_info);
702  return(polygon_info);
703 }
704 
705 /*
706 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
707 % %
708 % %
709 % %
710 + C o n v e r t P r i m i t i v e T o P a t h %
711 % %
712 % %
713 % %
714 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
715 %
716 % ConvertPrimitiveToPath() converts a PrimitiveInfo structure into a vector
717 % path structure.
718 %
719 % The format of the ConvertPrimitiveToPath method is:
720 %
721 % PathInfo *ConvertPrimitiveToPath(const DrawInfo *draw_info,
722 % const PrimitiveInfo *primitive_info)
723 %
724 % A description of each parameter follows:
725 %
726 % o Method ConvertPrimitiveToPath returns a vector path structure of type
727 % PathInfo.
728 %
729 % o draw_info: a structure of type DrawInfo.
730 %
731 % o primitive_info: Specifies a pointer to an PrimitiveInfo structure.
732 %
733 %
734 */
735 
736 static void LogPathInfo(const PathInfo *path_info)
737 {
738  register const PathInfo
739  *p;
740 
741  (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin vector-path");
742  for (p=path_info; p->code != EndCode; p++)
744  " %g,%g %s",p->point.x,p->point.y,p->code == GhostlineCode ?
745  "moveto ghostline" : p->code == OpenCode ? "moveto open" :
746  p->code == MoveToCode ? "moveto" : p->code == LineToCode ? "lineto" :
747  "?");
748  (void) LogMagickEvent(DrawEvent,GetMagickModule()," end vector-path");
749 }
750 
751 static PathInfo *ConvertPrimitiveToPath(const PrimitiveInfo *primitive_info)
752 {
754  closed_subpath;
755 
756  PathInfo
757  *path_info;
758 
760  code;
761 
762  PointInfo
763  p,
764  q;
765 
766  register ssize_t
767  i,
768  n;
769 
770  ssize_t
771  coordinates,
772  start;
773 
774  /*
775  Converts a PrimitiveInfo structure into a vector path structure.
776  */
777  switch (primitive_info->primitive)
778  {
779  case AlphaPrimitive:
780  case ColorPrimitive:
781  case ImagePrimitive:
782  case PointPrimitive:
783  case TextPrimitive:
784  return((PathInfo *) NULL);
785  default:
786  break;
787  }
788  for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++) ;
789  path_info=(PathInfo *) AcquireQuantumMemory((size_t) (3UL*i+1UL),
790  sizeof(*path_info));
791  if (path_info == (PathInfo *) NULL)
792  return((PathInfo *) NULL);
793  coordinates=0;
794  closed_subpath=MagickFalse;
795  n=0;
796  p.x=(-1.0);
797  p.y=(-1.0);
798  q.x=(-1.0);
799  q.y=(-1.0);
800  start=0;
801  for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
802  {
803  code=LineToCode;
804  if (coordinates <= 0)
805  {
806  /*
807  New subpath.
808  */
809  coordinates=(ssize_t) primitive_info[i].coordinates;
810  p=primitive_info[i].point;
811  start=n;
812  code=MoveToCode;
813  closed_subpath=primitive_info[i].closed_subpath;
814  }
815  coordinates--;
816  if ((code == MoveToCode) || (coordinates <= 0) ||
817  (fabs(q.x-primitive_info[i].point.x) >= MagickEpsilon) ||
818  (fabs(q.y-primitive_info[i].point.y) >= MagickEpsilon))
819  {
820  /*
821  Eliminate duplicate points.
822  */
823  path_info[n].code=code;
824  path_info[n].point=primitive_info[i].point;
825  q=primitive_info[i].point;
826  n++;
827  }
828  if (coordinates > 0)
829  continue; /* next point in current subpath */
830  if (closed_subpath != MagickFalse)
831  {
832  closed_subpath=MagickFalse;
833  continue;
834  }
835  /*
836  Mark the p point as open if the subpath is not closed.
837  */
838  path_info[start].code=OpenCode;
839  path_info[n].code=GhostlineCode;
840  path_info[n].point=primitive_info[i].point;
841  n++;
842  path_info[n].code=LineToCode;
843  path_info[n].point=p;
844  n++;
845  }
846  path_info[n].code=EndCode;
847  path_info[n].point.x=0.0;
848  path_info[n].point.y=0.0;
849  if (IsEventLogging() != MagickFalse)
850  LogPathInfo(path_info);
851  path_info=(PathInfo *) ResizeQuantumMemory(path_info,(size_t) (n+1),
852  sizeof(*path_info));
853  return(path_info);
854 }
855 
856 /*
857 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
858 % %
859 % %
860 % %
861 % D e s t r o y D r a w I n f o %
862 % %
863 % %
864 % %
865 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
866 %
867 % DestroyDrawInfo() deallocates memory associated with an DrawInfo structure.
868 %
869 % The format of the DestroyDrawInfo method is:
870 %
871 % DrawInfo *DestroyDrawInfo(DrawInfo *draw_info)
872 %
873 % A description of each parameter follows:
874 %
875 % o draw_info: the draw info.
876 %
877 */
879 {
880  assert(draw_info != (DrawInfo *) NULL);
881  if (draw_info->debug != MagickFalse)
882  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
883  assert(draw_info->signature == MagickCoreSignature);
884  if (draw_info->primitive != (char *) NULL)
885  draw_info->primitive=DestroyString(draw_info->primitive);
886  if (draw_info->text != (char *) NULL)
887  draw_info->text=DestroyString(draw_info->text);
888  if (draw_info->geometry != (char *) NULL)
889  draw_info->geometry=DestroyString(draw_info->geometry);
890  if (draw_info->fill_pattern != (Image *) NULL)
891  draw_info->fill_pattern=DestroyImage(draw_info->fill_pattern);
892  if (draw_info->stroke_pattern != (Image *) NULL)
893  draw_info->stroke_pattern=DestroyImage(draw_info->stroke_pattern);
894  if (draw_info->font != (char *) NULL)
895  draw_info->font=DestroyString(draw_info->font);
896  if (draw_info->metrics != (char *) NULL)
897  draw_info->metrics=DestroyString(draw_info->metrics);
898  if (draw_info->family != (char *) NULL)
899  draw_info->family=DestroyString(draw_info->family);
900  if (draw_info->encoding != (char *) NULL)
901  draw_info->encoding=DestroyString(draw_info->encoding);
902  if (draw_info->density != (char *) NULL)
903  draw_info->density=DestroyString(draw_info->density);
904  if (draw_info->server_name != (char *) NULL)
905  draw_info->server_name=(char *)
907  if (draw_info->dash_pattern != (double *) NULL)
908  draw_info->dash_pattern=(double *) RelinquishMagickMemory(
909  draw_info->dash_pattern);
910  if (draw_info->gradient.stops != (StopInfo *) NULL)
912  draw_info->gradient.stops);
913  if (draw_info->clip_mask != (char *) NULL)
914  draw_info->clip_mask=DestroyString(draw_info->clip_mask);
915  if (draw_info->clipping_mask != (Image *) NULL)
916  draw_info->clipping_mask=DestroyImage(draw_info->clipping_mask);
917  if (draw_info->composite_mask != (Image *) NULL)
918  draw_info->composite_mask=DestroyImage(draw_info->composite_mask);
919  draw_info->signature=(~MagickCoreSignature);
920  draw_info=(DrawInfo *) RelinquishMagickMemory(draw_info);
921  return(draw_info);
922 }
923 
924 /*
925 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
926 % %
927 % %
928 % %
929 + D e s t r o y E d g e %
930 % %
931 % %
932 % %
933 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
934 %
935 % DestroyEdge() destroys the specified polygon edge.
936 %
937 % The format of the DestroyEdge method is:
938 %
939 % ssize_t DestroyEdge(PolygonInfo *polygon_info,const int edge)
940 %
941 % A description of each parameter follows:
942 %
943 % o polygon_info: Specifies a pointer to an PolygonInfo structure.
944 %
945 % o edge: the polygon edge number to destroy.
946 %
947 */
948 static size_t DestroyEdge(PolygonInfo *polygon_info,
949  const size_t edge)
950 {
951  assert(edge < polygon_info->number_edges);
952  polygon_info->edges[edge].points=(PointInfo *) RelinquishMagickMemory(
953  polygon_info->edges[edge].points);
954  polygon_info->number_edges--;
955  if (edge < polygon_info->number_edges)
956  (void) memmove(polygon_info->edges+edge,polygon_info->edges+edge+1,
957  (size_t) (polygon_info->number_edges-edge)*sizeof(*polygon_info->edges));
958  return(polygon_info->number_edges);
959 }
960 
961 /*
962 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
963 % %
964 % %
965 % %
966 + D e s t r o y P o l y g o n I n f o %
967 % %
968 % %
969 % %
970 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
971 %
972 % DestroyPolygonInfo() destroys the PolygonInfo data structure.
973 %
974 % The format of the DestroyPolygonInfo method is:
975 %
976 % PolygonInfo *DestroyPolygonInfo(PolygonInfo *polygon_info)
977 %
978 % A description of each parameter follows:
979 %
980 % o polygon_info: Specifies a pointer to an PolygonInfo structure.
981 %
982 */
984 {
985  register ssize_t
986  i;
987 
988  for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
989  polygon_info->edges[i].points=(PointInfo *)
990  RelinquishMagickMemory(polygon_info->edges[i].points);
991  polygon_info->edges=(EdgeInfo *) RelinquishMagickMemory(polygon_info->edges);
992  return((PolygonInfo *) RelinquishMagickMemory(polygon_info));
993 }
994 
995 /*
996 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
997 % %
998 % %
999 % %
1000 % D r a w A f f i n e I m a g e %
1001 % %
1002 % %
1003 % %
1004 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1005 %
1006 % DrawAffineImage() composites the source over the destination image as
1007 % dictated by the affine transform.
1008 %
1009 % The format of the DrawAffineImage method is:
1010 %
1011 % MagickBooleanType DrawAffineImage(Image *image,const Image *source,
1012 % const AffineMatrix *affine,ExceptionInfo *exception)
1013 %
1014 % A description of each parameter follows:
1015 %
1016 % o image: the image.
1017 %
1018 % o source: the source image.
1019 %
1020 % o affine: the affine transform.
1021 %
1022 % o exception: return any errors or warnings in this structure.
1023 %
1024 */
1025 
1026 static SegmentInfo AffineEdge(const Image *image,const AffineMatrix *affine,
1027  const double y,const SegmentInfo *edge)
1028 {
1029  double
1030  intercept,
1031  z;
1032 
1033  register double
1034  x;
1035 
1036  SegmentInfo
1037  inverse_edge;
1038 
1039  /*
1040  Determine left and right edges.
1041  */
1042  inverse_edge.x1=edge->x1;
1043  inverse_edge.y1=edge->y1;
1044  inverse_edge.x2=edge->x2;
1045  inverse_edge.y2=edge->y2;
1046  z=affine->ry*y+affine->tx;
1047  if (affine->sx >= MagickEpsilon)
1048  {
1049  intercept=(-z/affine->sx);
1050  x=intercept;
1051  if (x > inverse_edge.x1)
1052  inverse_edge.x1=x;
1053  intercept=(-z+(double) image->columns)/affine->sx;
1054  x=intercept;
1055  if (x < inverse_edge.x2)
1056  inverse_edge.x2=x;
1057  }
1058  else
1059  if (affine->sx < -MagickEpsilon)
1060  {
1061  intercept=(-z+(double) image->columns)/affine->sx;
1062  x=intercept;
1063  if (x > inverse_edge.x1)
1064  inverse_edge.x1=x;
1065  intercept=(-z/affine->sx);
1066  x=intercept;
1067  if (x < inverse_edge.x2)
1068  inverse_edge.x2=x;
1069  }
1070  else
1071  if ((z < 0.0) || ((size_t) floor(z+0.5) >= image->columns))
1072  {
1073  inverse_edge.x2=edge->x1;
1074  return(inverse_edge);
1075  }
1076  /*
1077  Determine top and bottom edges.
1078  */
1079  z=affine->sy*y+affine->ty;
1080  if (affine->rx >= MagickEpsilon)
1081  {
1082  intercept=(-z/affine->rx);
1083  x=intercept;
1084  if (x > inverse_edge.x1)
1085  inverse_edge.x1=x;
1086  intercept=(-z+(double) image->rows)/affine->rx;
1087  x=intercept;
1088  if (x < inverse_edge.x2)
1089  inverse_edge.x2=x;
1090  }
1091  else
1092  if (affine->rx < -MagickEpsilon)
1093  {
1094  intercept=(-z+(double) image->rows)/affine->rx;
1095  x=intercept;
1096  if (x > inverse_edge.x1)
1097  inverse_edge.x1=x;
1098  intercept=(-z/affine->rx);
1099  x=intercept;
1100  if (x < inverse_edge.x2)
1101  inverse_edge.x2=x;
1102  }
1103  else
1104  if ((z < 0.0) || ((size_t) floor(z+0.5) >= image->rows))
1105  {
1106  inverse_edge.x2=edge->x2;
1107  return(inverse_edge);
1108  }
1109  return(inverse_edge);
1110 }
1111 
1113 {
1114  AffineMatrix
1115  inverse_affine;
1116 
1117  double
1118  determinant;
1119 
1120  determinant=PerceptibleReciprocal(affine->sx*affine->sy-affine->rx*
1121  affine->ry);
1122  inverse_affine.sx=determinant*affine->sy;
1123  inverse_affine.rx=determinant*(-affine->rx);
1124  inverse_affine.ry=determinant*(-affine->ry);
1125  inverse_affine.sy=determinant*affine->sx;
1126  inverse_affine.tx=(-affine->tx)*inverse_affine.sx-affine->ty*
1127  inverse_affine.ry;
1128  inverse_affine.ty=(-affine->tx)*inverse_affine.rx-affine->ty*
1129  inverse_affine.sy;
1130  return(inverse_affine);
1131 }
1132 
1134  const Image *source,const AffineMatrix *affine,ExceptionInfo *exception)
1135 {
1136  AffineMatrix
1137  inverse_affine;
1138 
1139  CacheView
1140  *image_view,
1141  *source_view;
1142 
1144  status;
1145 
1146  PixelInfo
1147  zero;
1148 
1149  PointInfo
1150  extent[4],
1151  min,
1152  max;
1153 
1154  register ssize_t
1155  i;
1156 
1157  SegmentInfo
1158  edge;
1159 
1160  ssize_t
1161  start,
1162  stop,
1163  y;
1164 
1165  /*
1166  Determine bounding box.
1167  */
1168  assert(image != (Image *) NULL);
1169  assert(image->signature == MagickCoreSignature);
1170  if (image->debug != MagickFalse)
1171  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1172  assert(source != (const Image *) NULL);
1173  assert(source->signature == MagickCoreSignature);
1174  assert(affine != (AffineMatrix *) NULL);
1175  extent[0].x=0.0;
1176  extent[0].y=0.0;
1177  extent[1].x=(double) source->columns-1.0;
1178  extent[1].y=0.0;
1179  extent[2].x=(double) source->columns-1.0;
1180  extent[2].y=(double) source->rows-1.0;
1181  extent[3].x=0.0;
1182  extent[3].y=(double) source->rows-1.0;
1183  for (i=0; i < 4; i++)
1184  {
1185  PointInfo
1186  point;
1187 
1188  point=extent[i];
1189  extent[i].x=point.x*affine->sx+point.y*affine->ry+affine->tx;
1190  extent[i].y=point.x*affine->rx+point.y*affine->sy+affine->ty;
1191  }
1192  min=extent[0];
1193  max=extent[0];
1194  for (i=1; i < 4; i++)
1195  {
1196  if (min.x > extent[i].x)
1197  min.x=extent[i].x;
1198  if (min.y > extent[i].y)
1199  min.y=extent[i].y;
1200  if (max.x < extent[i].x)
1201  max.x=extent[i].x;
1202  if (max.y < extent[i].y)
1203  max.y=extent[i].y;
1204  }
1205  /*
1206  Affine transform image.
1207  */
1208  if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
1209  return(MagickFalse);
1210  status=MagickTrue;
1211  edge.x1=MagickMax(min.x,0.0);
1212  edge.y1=MagickMax(min.y,0.0);
1213  edge.x2=MagickMin(max.x,(double) image->columns-1.0);
1214  edge.y2=MagickMin(max.y,(double) image->rows-1.0);
1215  inverse_affine=InverseAffineMatrix(affine);
1216  GetPixelInfo(image,&zero);
1217  start=(ssize_t) ceil(edge.y1-0.5);
1218  stop=(ssize_t) floor(edge.y2+0.5);
1219  source_view=AcquireVirtualCacheView(source,exception);
1220  image_view=AcquireAuthenticCacheView(image,exception);
1221 #if defined(MAGICKCORE_OPENMP_SUPPORT)
1222  #pragma omp parallel for schedule(static) shared(status) \
1223  magick_number_threads(source,image,stop-start,1)
1224 #endif
1225  for (y=start; y <= stop; y++)
1226  {
1227  PixelInfo
1228  composite,
1229  pixel;
1230 
1231  PointInfo
1232  point;
1233 
1234  register ssize_t
1235  x;
1236 
1237  register Quantum
1238  *magick_restrict q;
1239 
1240  SegmentInfo
1241  inverse_edge;
1242 
1243  ssize_t
1244  x_offset;
1245 
1246  inverse_edge=AffineEdge(source,&inverse_affine,(double) y,&edge);
1247  if (inverse_edge.x2 < inverse_edge.x1)
1248  continue;
1249  q=GetCacheViewAuthenticPixels(image_view,(ssize_t) ceil(inverse_edge.x1-
1250  0.5),y,(size_t) (floor(inverse_edge.x2+0.5)-ceil(inverse_edge.x1-0.5)+1),
1251  1,exception);
1252  if (q == (Quantum *) NULL)
1253  continue;
1254  pixel=zero;
1255  composite=zero;
1256  x_offset=0;
1257  for (x=(ssize_t) ceil(inverse_edge.x1-0.5); x <= (ssize_t) floor(inverse_edge.x2+0.5); x++)
1258  {
1259  point.x=(double) x*inverse_affine.sx+y*inverse_affine.ry+
1260  inverse_affine.tx;
1261  point.y=(double) x*inverse_affine.rx+y*inverse_affine.sy+
1262  inverse_affine.ty;
1263  status=InterpolatePixelInfo(source,source_view,UndefinedInterpolatePixel,
1264  point.x,point.y,&pixel,exception);
1265  if (status == MagickFalse)
1266  break;
1267  GetPixelInfoPixel(image,q,&composite);
1268  CompositePixelInfoOver(&pixel,pixel.alpha,&composite,composite.alpha,
1269  &composite);
1270  SetPixelViaPixelInfo(image,&composite,q);
1271  x_offset++;
1272  q+=GetPixelChannels(image);
1273  }
1274  if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
1275  status=MagickFalse;
1276  }
1277  source_view=DestroyCacheView(source_view);
1278  image_view=DestroyCacheView(image_view);
1279  return(status);
1280 }
1281 
1282 /*
1283 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1284 % %
1285 % %
1286 % %
1287 + D r a w B o u n d i n g R e c t a n g l e s %
1288 % %
1289 % %
1290 % %
1291 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1292 %
1293 % DrawBoundingRectangles() draws the bounding rectangles on the image. This
1294 % is only useful for developers debugging the rendering algorithm.
1295 %
1296 % The format of the DrawBoundingRectangles method is:
1297 %
1298 % MagickBooleanType DrawBoundingRectangles(Image *image,
1299 % const DrawInfo *draw_info,PolygonInfo *polygon_info,
1300 % ExceptionInfo *exception)
1301 %
1302 % A description of each parameter follows:
1303 %
1304 % o image: the image.
1305 %
1306 % o draw_info: the draw info.
1307 %
1308 % o polygon_info: Specifies a pointer to a PolygonInfo structure.
1309 %
1310 % o exception: return any errors or warnings in this structure.
1311 %
1312 */
1313 
1314 static inline double SaneStrokeWidth(const Image *image,
1315  const DrawInfo *draw_info)
1316 {
1317  return(MagickMin((double) draw_info->stroke_width,
1318  (2.0*sqrt(2.0)+MagickEpsilon)*MagickMax(image->columns,image->rows)));
1319 }
1320 
1322  const DrawInfo *draw_info,const PolygonInfo *polygon_info,
1323  ExceptionInfo *exception)
1324 {
1325  double
1326  mid;
1327 
1328  DrawInfo
1329  *clone_info;
1330 
1332  status;
1333 
1334  PointInfo
1335  end,
1336  resolution,
1337  start;
1338 
1340  primitive_info[6];
1341 
1342  register ssize_t
1343  i;
1344 
1345  SegmentInfo
1346  bounds;
1347 
1348  ssize_t
1349  coordinates;
1350 
1351  (void) memset(primitive_info,0,sizeof(primitive_info));
1352  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1353  status=QueryColorCompliance("#000F",AllCompliance,&clone_info->fill,
1354  exception);
1355  if (status == MagickFalse)
1356  {
1357  clone_info=DestroyDrawInfo(clone_info);
1358  return(status);
1359  }
1360  resolution.x=96.0;
1361  resolution.y=96.0;
1362  if (clone_info->density != (char *) NULL)
1363  {
1364  GeometryInfo
1365  geometry_info;
1366 
1368  flags;
1369 
1370  flags=ParseGeometry(clone_info->density,&geometry_info);
1371  resolution.x=geometry_info.rho;
1372  resolution.y=geometry_info.sigma;
1373  if ((flags & SigmaValue) == MagickFalse)
1374  resolution.y=resolution.x;
1375  }
1376  mid=(resolution.x/96.0)*ExpandAffine(&clone_info->affine)*
1377  SaneStrokeWidth(image,clone_info)/2.0;
1378  bounds.x1=0.0;
1379  bounds.y1=0.0;
1380  bounds.x2=0.0;
1381  bounds.y2=0.0;
1382  if (polygon_info != (PolygonInfo *) NULL)
1383  {
1384  bounds=polygon_info->edges[0].bounds;
1385  for (i=1; i < (ssize_t) polygon_info->number_edges; i++)
1386  {
1387  if (polygon_info->edges[i].bounds.x1 < (double) bounds.x1)
1388  bounds.x1=polygon_info->edges[i].bounds.x1;
1389  if (polygon_info->edges[i].bounds.y1 < (double) bounds.y1)
1390  bounds.y1=polygon_info->edges[i].bounds.y1;
1391  if (polygon_info->edges[i].bounds.x2 > (double) bounds.x2)
1392  bounds.x2=polygon_info->edges[i].bounds.x2;
1393  if (polygon_info->edges[i].bounds.y2 > (double) bounds.y2)
1394  bounds.y2=polygon_info->edges[i].bounds.y2;
1395  }
1396  bounds.x1-=mid;
1397  bounds.x1=bounds.x1 < 0.0 ? 0.0 : bounds.x1 >= (double)
1398  image->columns ? (double) image->columns-1 : bounds.x1;
1399  bounds.y1-=mid;
1400  bounds.y1=bounds.y1 < 0.0 ? 0.0 : bounds.y1 >= (double)
1401  image->rows ? (double) image->rows-1 : bounds.y1;
1402  bounds.x2+=mid;
1403  bounds.x2=bounds.x2 < 0.0 ? 0.0 : bounds.x2 >= (double)
1404  image->columns ? (double) image->columns-1 : bounds.x2;
1405  bounds.y2+=mid;
1406  bounds.y2=bounds.y2 < 0.0 ? 0.0 : bounds.y2 >= (double)
1407  image->rows ? (double) image->rows-1 : bounds.y2;
1408  for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
1409  {
1410  if (polygon_info->edges[i].direction != 0)
1411  status=QueryColorCompliance("#f00",AllCompliance,&clone_info->stroke,
1412  exception);
1413  else
1414  status=QueryColorCompliance("#0f0",AllCompliance,&clone_info->stroke,
1415  exception);
1416  if (status == MagickFalse)
1417  break;
1418  start.x=(double) (polygon_info->edges[i].bounds.x1-mid);
1419  start.y=(double) (polygon_info->edges[i].bounds.y1-mid);
1420  end.x=(double) (polygon_info->edges[i].bounds.x2+mid);
1421  end.y=(double) (polygon_info->edges[i].bounds.y2+mid);
1422  primitive_info[0].primitive=RectanglePrimitive;
1423  status&=TraceRectangle(primitive_info,start,end);
1424  primitive_info[0].method=ReplaceMethod;
1425  coordinates=(ssize_t) primitive_info[0].coordinates;
1426  primitive_info[coordinates].primitive=UndefinedPrimitive;
1427  status=DrawPrimitive(image,clone_info,primitive_info,exception);
1428  if (status == MagickFalse)
1429  break;
1430  }
1431  if (i < (ssize_t) polygon_info->number_edges)
1432  {
1433  clone_info=DestroyDrawInfo(clone_info);
1434  return(status);
1435  }
1436  }
1437  status=QueryColorCompliance("#00f",AllCompliance,&clone_info->stroke,
1438  exception);
1439  if (status == MagickFalse)
1440  {
1441  clone_info=DestroyDrawInfo(clone_info);
1442  return(status);
1443  }
1444  start.x=(double) (bounds.x1-mid);
1445  start.y=(double) (bounds.y1-mid);
1446  end.x=(double) (bounds.x2+mid);
1447  end.y=(double) (bounds.y2+mid);
1448  primitive_info[0].primitive=RectanglePrimitive;
1449  status&=TraceRectangle(primitive_info,start,end);
1450  primitive_info[0].method=ReplaceMethod;
1451  coordinates=(ssize_t) primitive_info[0].coordinates;
1452  primitive_info[coordinates].primitive=UndefinedPrimitive;
1453  status=DrawPrimitive(image,clone_info,primitive_info,exception);
1454  clone_info=DestroyDrawInfo(clone_info);
1455  return(status);
1456 }
1457 
1458 /*
1459 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1460 % %
1461 % %
1462 % %
1463 % D r a w C l i p P a t h %
1464 % %
1465 % %
1466 % %
1467 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1468 %
1469 % DrawClipPath() draws the clip path on the image mask.
1470 %
1471 % The format of the DrawClipPath method is:
1472 %
1473 % MagickBooleanType DrawClipPath(Image *image,const DrawInfo *draw_info,
1474 % const char *id,ExceptionInfo *exception)
1475 %
1476 % A description of each parameter follows:
1477 %
1478 % o image: the image.
1479 %
1480 % o draw_info: the draw info.
1481 %
1482 % o id: the clip path id.
1483 %
1484 % o exception: return any errors or warnings in this structure.
1485 %
1486 */
1488  const DrawInfo *draw_info,const char *id,ExceptionInfo *exception)
1489 {
1490  const char
1491  *clip_path;
1492 
1493  Image
1494  *clipping_mask;
1495 
1497  status;
1498 
1499  clip_path=GetImageArtifact(image,id);
1500  if (clip_path == (const char *) NULL)
1501  return(MagickFalse);
1502  clipping_mask=DrawClippingMask(image,draw_info,draw_info->clip_mask,clip_path,
1503  exception);
1504  if (clipping_mask == (Image *) NULL)
1505  return(MagickFalse);
1506  status=SetImageMask(image,WritePixelMask,clipping_mask,exception);
1507  clipping_mask=DestroyImage(clipping_mask);
1508  return(status);
1509 }
1510 
1511 /*
1512 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1513 % %
1514 % %
1515 % %
1516 % D r a w C l i p p i n g M a s k %
1517 % %
1518 % %
1519 % %
1520 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1521 %
1522 % DrawClippingMask() draws the clip path and returns it as an image clipping
1523 % mask.
1524 %
1525 % The format of the DrawClippingMask method is:
1526 %
1527 % Image *DrawClippingMask(Image *image,const DrawInfo *draw_info,
1528 % const char *id,const char *clip_path,ExceptionInfo *exception)
1529 %
1530 % A description of each parameter follows:
1531 %
1532 % o image: the image.
1533 %
1534 % o draw_info: the draw info.
1535 %
1536 % o id: the clip path id.
1537 %
1538 % o clip_path: the clip path.
1539 %
1540 % o exception: return any errors or warnings in this structure.
1541 %
1542 */
1543 static Image *DrawClippingMask(Image *image,const DrawInfo *draw_info,
1544  const char *id,const char *clip_path,ExceptionInfo *exception)
1545 {
1546  DrawInfo
1547  *clone_info;
1548 
1549  Image
1550  *clip_mask,
1551  *separate_mask;
1552 
1554  status;
1555 
1556  /*
1557  Draw a clip path.
1558  */
1559  assert(image != (Image *) NULL);
1560  assert(image->signature == MagickCoreSignature);
1561  if (image->debug != MagickFalse)
1562  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1563  assert(draw_info != (const DrawInfo *) NULL);
1564  clip_mask=AcquireImage((const ImageInfo *) NULL,exception);
1565  status=SetImageExtent(clip_mask,image->columns,image->rows,exception);
1566  if (status == MagickFalse)
1567  return(DestroyImage(clip_mask));
1568  status=SetImageMask(clip_mask,WritePixelMask,(Image *) NULL,exception);
1569  status=QueryColorCompliance("#0000",AllCompliance,
1570  &clip_mask->background_color,exception);
1573  status=SetImageBackgroundColor(clip_mask,exception);
1574  if (image->debug != MagickFalse)
1575  (void) LogMagickEvent(DrawEvent,GetMagickModule(),"\nbegin clip-path %s",
1576  id);
1577  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1578  (void) CloneString(&clone_info->primitive,clip_path);
1579  status=QueryColorCompliance("#ffffff",AllCompliance,&clone_info->fill,
1580  exception);
1581  if (clone_info->clip_mask != (char *) NULL)
1582  clone_info->clip_mask=DestroyString(clone_info->clip_mask);
1583  status=QueryColorCompliance("#00000000",AllCompliance,&clone_info->stroke,
1584  exception);
1585  clone_info->stroke_width=0.0;
1586  clone_info->alpha=OpaqueAlpha;
1587  clone_info->clip_path=MagickTrue;
1588  status=RenderMVGContent(clip_mask,clone_info,1,exception);
1589  clone_info=DestroyDrawInfo(clone_info);
1590  separate_mask=SeparateImage(clip_mask,AlphaChannel,exception);
1591  if (separate_mask != (Image *) NULL)
1592  {
1593  clip_mask=DestroyImage(clip_mask);
1594  clip_mask=separate_mask;
1595  status=NegateImage(clip_mask,MagickFalse,exception);
1596  if (status == MagickFalse)
1597  clip_mask=DestroyImage(clip_mask);
1598  }
1599  if (image->debug != MagickFalse)
1600  (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end clip-path");
1601  return(clip_mask);
1602 }
1603 
1604 /*
1605 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1606 % %
1607 % %
1608 % %
1609 % D r a w C o m p o s i t e M a s k %
1610 % %
1611 % %
1612 % %
1613 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1614 %
1615 % DrawCompositeMask() draws the mask path and returns it as an image mask.
1616 %
1617 % The format of the DrawCompositeMask method is:
1618 %
1619 % Image *DrawCompositeMask(Image *image,const DrawInfo *draw_info,
1620 % const char *id,const char *mask_path,ExceptionInfo *exception)
1621 %
1622 % A description of each parameter follows:
1623 %
1624 % o image: the image.
1625 %
1626 % o draw_info: the draw info.
1627 %
1628 % o id: the mask path id.
1629 %
1630 % o mask_path: the mask path.
1631 %
1632 % o exception: return any errors or warnings in this structure.
1633 %
1634 */
1635 static Image *DrawCompositeMask(Image *image,const DrawInfo *draw_info,
1636  const char *id,const char *mask_path,ExceptionInfo *exception)
1637 {
1638  Image
1639  *composite_mask,
1640  *separate_mask;
1641 
1642  DrawInfo
1643  *clone_info;
1644 
1646  status;
1647 
1648  /*
1649  Draw a mask path.
1650  */
1651  assert(image != (Image *) NULL);
1652  assert(image->signature == MagickCoreSignature);
1653  if (image->debug != MagickFalse)
1654  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1655  assert(draw_info != (const DrawInfo *) NULL);
1656  composite_mask=AcquireImage((const ImageInfo *) NULL,exception);
1657  status=SetImageExtent(composite_mask,image->columns,image->rows,exception);
1658  if (status == MagickFalse)
1659  return(DestroyImage(composite_mask));
1660  status=SetImageMask(composite_mask,CompositePixelMask,(Image *) NULL,
1661  exception);
1662  status=QueryColorCompliance("#0000",AllCompliance,
1663  &composite_mask->background_color,exception);
1666  (void) SetImageBackgroundColor(composite_mask,exception);
1667  if (image->debug != MagickFalse)
1668  (void) LogMagickEvent(DrawEvent,GetMagickModule(),"\nbegin mask-path %s",
1669  id);
1670  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1671  (void) CloneString(&clone_info->primitive,mask_path);
1672  status=QueryColorCompliance("#ffffff",AllCompliance,&clone_info->fill,
1673  exception);
1674  status=QueryColorCompliance("#00000000",AllCompliance,&clone_info->stroke,
1675  exception);
1676  clone_info->stroke_width=0.0;
1677  clone_info->alpha=OpaqueAlpha;
1678  status=RenderMVGContent(composite_mask,clone_info,1,exception);
1679  clone_info=DestroyDrawInfo(clone_info);
1680  separate_mask=SeparateImage(composite_mask,AlphaChannel,exception);
1681  if (separate_mask != (Image *) NULL)
1682  {
1683  composite_mask=DestroyImage(composite_mask);
1684  composite_mask=separate_mask;
1685  status=NegateImage(composite_mask,MagickFalse,exception);
1686  if (status == MagickFalse)
1687  composite_mask=DestroyImage(composite_mask);
1688  }
1689  if (image->debug != MagickFalse)
1690  (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end mask-path");
1691  return(composite_mask);
1692 }
1693 
1694 /*
1695 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1696 % %
1697 % %
1698 % %
1699 + D r a w D a s h P o l y g o n %
1700 % %
1701 % %
1702 % %
1703 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1704 %
1705 % DrawDashPolygon() draws a dashed polygon (line, rectangle, ellipse) on the
1706 % image while respecting the dash offset and dash pattern attributes.
1707 %
1708 % The format of the DrawDashPolygon method is:
1709 %
1710 % MagickBooleanType DrawDashPolygon(const DrawInfo *draw_info,
1711 % const PrimitiveInfo *primitive_info,Image *image,
1712 % ExceptionInfo *exception)
1713 %
1714 % A description of each parameter follows:
1715 %
1716 % o draw_info: the draw info.
1717 %
1718 % o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
1719 %
1720 % o image: the image.
1721 %
1722 % o exception: return any errors or warnings in this structure.
1723 %
1724 */
1726  const PrimitiveInfo *primitive_info,Image *image,ExceptionInfo *exception)
1727 {
1728  double
1729  length,
1730  maximum_length,
1731  offset,
1732  scale,
1733  total_length;
1734 
1735  DrawInfo
1736  *clone_info;
1737 
1739  status;
1740 
1742  *dash_polygon;
1743 
1744  register double
1745  dx,
1746  dy;
1747 
1748  register ssize_t
1749  i;
1750 
1751  size_t
1752  number_vertices;
1753 
1754  ssize_t
1755  j,
1756  n;
1757 
1758  assert(draw_info != (const DrawInfo *) NULL);
1759  if (image->debug != MagickFalse)
1760  (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin draw-dash");
1761  for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++) ;
1762  number_vertices=(size_t) i;
1763  dash_polygon=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
1764  (2UL*number_vertices+32UL),sizeof(*dash_polygon));
1765  if (dash_polygon == (PrimitiveInfo *) NULL)
1766  return(MagickFalse);
1767  (void) memset(dash_polygon,0,(2UL*number_vertices+32UL)*
1768  sizeof(*dash_polygon));
1769  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1770  clone_info->miterlimit=0;
1771  dash_polygon[0]=primitive_info[0];
1772  scale=ExpandAffine(&draw_info->affine);
1773  length=scale*draw_info->dash_pattern[0];
1774  offset=fabs(draw_info->dash_offset) >= MagickEpsilon ?
1775  scale*draw_info->dash_offset : 0.0;
1776  j=1;
1777  for (n=0; offset > 0.0; j=0)
1778  {
1779  if (draw_info->dash_pattern[n] <= 0.0)
1780  break;
1781  length=scale*(draw_info->dash_pattern[n]+(n == 0 ? -0.5 : 0.5));
1782  if (offset > length)
1783  {
1784  offset-=length;
1785  n++;
1786  length=scale*draw_info->dash_pattern[n];
1787  continue;
1788  }
1789  if (offset < length)
1790  {
1791  length-=offset;
1792  offset=0.0;
1793  break;
1794  }
1795  offset=0.0;
1796  n++;
1797  }
1798  status=MagickTrue;
1799  maximum_length=0.0;
1800  total_length=0.0;
1801  for (i=1; (i < (ssize_t) number_vertices) && (length >= 0.0); i++)
1802  {
1803  dx=primitive_info[i].point.x-primitive_info[i-1].point.x;
1804  dy=primitive_info[i].point.y-primitive_info[i-1].point.y;
1805  maximum_length=hypot(dx,dy);
1806  if (maximum_length > MaxBezierCoordinates)
1807  break;
1808  if (fabs(length) < MagickEpsilon)
1809  {
1810  n++;
1811  if (fabs(draw_info->dash_pattern[n]) < MagickEpsilon)
1812  n=0;
1813  length=scale*draw_info->dash_pattern[n];
1814  }
1815  for (total_length=0.0; (length >= 0.0) && (maximum_length >= (total_length+length)); )
1816  {
1817  total_length+=length;
1818  if ((n & 0x01) != 0)
1819  {
1820  dash_polygon[0]=primitive_info[0];
1821  dash_polygon[0].point.x=(double) (primitive_info[i-1].point.x+dx*
1822  total_length*PerceptibleReciprocal(maximum_length));
1823  dash_polygon[0].point.y=(double) (primitive_info[i-1].point.y+dy*
1824  total_length*PerceptibleReciprocal(maximum_length));
1825  j=1;
1826  }
1827  else
1828  {
1829  if ((j+1) > (ssize_t) number_vertices)
1830  break;
1831  dash_polygon[j]=primitive_info[i-1];
1832  dash_polygon[j].point.x=(double) (primitive_info[i-1].point.x+dx*
1833  total_length*PerceptibleReciprocal(maximum_length));
1834  dash_polygon[j].point.y=(double) (primitive_info[i-1].point.y+dy*
1835  total_length*PerceptibleReciprocal(maximum_length));
1836  dash_polygon[j].coordinates=1;
1837  j++;
1838  dash_polygon[0].coordinates=(size_t) j;
1839  dash_polygon[j].primitive=UndefinedPrimitive;
1840  status&=DrawStrokePolygon(image,clone_info,dash_polygon,exception);
1841  }
1842  n++;
1843  if (fabs(draw_info->dash_pattern[n]) < MagickEpsilon)
1844  n=0;
1845  length=scale*draw_info->dash_pattern[n];
1846  }
1847  length-=(maximum_length-total_length);
1848  if ((n & 0x01) != 0)
1849  continue;
1850  dash_polygon[j]=primitive_info[i];
1851  dash_polygon[j].coordinates=1;
1852  j++;
1853  }
1854  if ((total_length < maximum_length) && ((n & 0x01) == 0) && (j > 1))
1855  {
1856  dash_polygon[j]=primitive_info[i-1];
1857  dash_polygon[j].point.x+=MagickEpsilon;
1858  dash_polygon[j].point.y+=MagickEpsilon;
1859  dash_polygon[j].coordinates=1;
1860  j++;
1861  dash_polygon[0].coordinates=(size_t) j;
1862  dash_polygon[j].primitive=UndefinedPrimitive;
1863  status&=DrawStrokePolygon(image,clone_info,dash_polygon,exception);
1864  }
1865  dash_polygon=(PrimitiveInfo *) RelinquishMagickMemory(dash_polygon);
1866  clone_info=DestroyDrawInfo(clone_info);
1867  if (image->debug != MagickFalse)
1868  (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-dash");
1869  return(status != 0 ? MagickTrue : MagickFalse);
1870 }
1871 
1872 /*
1873 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1874 % %
1875 % %
1876 % %
1877 % D r a w G r a d i e n t I m a g e %
1878 % %
1879 % %
1880 % %
1881 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1882 %
1883 % DrawGradientImage() draws a linear gradient on the image.
1884 %
1885 % The format of the DrawGradientImage method is:
1886 %
1887 % MagickBooleanType DrawGradientImage(Image *image,
1888 % const DrawInfo *draw_info,ExceptionInfo *exception)
1889 %
1890 % A description of each parameter follows:
1891 %
1892 % o image: the image.
1893 %
1894 % o draw_info: the draw info.
1895 %
1896 % o exception: return any errors or warnings in this structure.
1897 %
1898 */
1899 
1900 static inline double GetStopColorOffset(const GradientInfo *gradient,
1901  const ssize_t x,const ssize_t y)
1902 {
1903  switch (gradient->type)
1904  {
1905  case UndefinedGradient:
1906  case LinearGradient:
1907  {
1908  double
1909  gamma,
1910  length,
1911  offset,
1912  scale;
1913 
1914  PointInfo
1915  p,
1916  q;
1917 
1918  const SegmentInfo
1919  *gradient_vector;
1920 
1921  gradient_vector=(&gradient->gradient_vector);
1922  p.x=gradient_vector->x2-gradient_vector->x1;
1923  p.y=gradient_vector->y2-gradient_vector->y1;
1924  q.x=(double) x-gradient_vector->x1;
1925  q.y=(double) y-gradient_vector->y1;
1926  length=sqrt(q.x*q.x+q.y*q.y);
1927  gamma=sqrt(p.x*p.x+p.y*p.y)*length;
1928  gamma=PerceptibleReciprocal(gamma);
1929  scale=p.x*q.x+p.y*q.y;
1930  offset=gamma*scale*length;
1931  return(offset);
1932  }
1933  case RadialGradient:
1934  {
1935  PointInfo
1936  v;
1937 
1938  if (gradient->spread == RepeatSpread)
1939  {
1940  v.x=(double) x-gradient->center.x;
1941  v.y=(double) y-gradient->center.y;
1942  return(sqrt(v.x*v.x+v.y*v.y));
1943  }
1944  v.x=(double) (((x-gradient->center.x)*cos(DegreesToRadians(
1945  gradient->angle)))+((y-gradient->center.y)*sin(DegreesToRadians(
1946  gradient->angle))))*PerceptibleReciprocal(gradient->radii.x);
1947  v.y=(double) (((x-gradient->center.x)*sin(DegreesToRadians(
1948  gradient->angle)))-((y-gradient->center.y)*cos(DegreesToRadians(
1949  gradient->angle))))*PerceptibleReciprocal(gradient->radii.y);
1950  return(sqrt(v.x*v.x+v.y*v.y));
1951  }
1952  }
1953  return(0.0);
1954 }
1955 
1956 static int StopInfoCompare(const void *x,const void *y)
1957 {
1958  StopInfo
1959  *stop_1,
1960  *stop_2;
1961 
1962  stop_1=(StopInfo *) x;
1963  stop_2=(StopInfo *) y;
1964  if (stop_1->offset > stop_2->offset)
1965  return(1);
1966  if (fabs(stop_1->offset-stop_2->offset) <= MagickEpsilon)
1967  return(0);
1968  return(-1);
1969 }
1970 
1972  const DrawInfo *draw_info,ExceptionInfo *exception)
1973 {
1974  CacheView
1975  *image_view;
1976 
1977  const GradientInfo
1978  *gradient;
1979 
1980  const SegmentInfo
1981  *gradient_vector;
1982 
1983  double
1984  length;
1985 
1987  status;
1988 
1989  PixelInfo
1990  zero;
1991 
1992  PointInfo
1993  point;
1994 
1996  bounding_box;
1997 
1998  ssize_t
1999  y;
2000 
2001  /*
2002  Draw linear or radial gradient on image.
2003  */
2004  assert(image != (Image *) NULL);
2005  assert(image->signature == MagickCoreSignature);
2006  if (image->debug != MagickFalse)
2007  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2008  assert(draw_info != (const DrawInfo *) NULL);
2009  gradient=(&draw_info->gradient);
2010  qsort(gradient->stops,gradient->number_stops,sizeof(StopInfo),
2011  StopInfoCompare);
2012  gradient_vector=(&gradient->gradient_vector);
2013  point.x=gradient_vector->x2-gradient_vector->x1;
2014  point.y=gradient_vector->y2-gradient_vector->y1;
2015  length=sqrt(point.x*point.x+point.y*point.y);
2016  bounding_box=gradient->bounding_box;
2017  status=MagickTrue;
2018  GetPixelInfo(image,&zero);
2019  image_view=AcquireAuthenticCacheView(image,exception);
2020 #if defined(MAGICKCORE_OPENMP_SUPPORT)
2021  #pragma omp parallel for schedule(static) shared(status) \
2022  magick_number_threads(image,image,bounding_box.height-bounding_box.y,1)
2023 #endif
2024  for (y=bounding_box.y; y < (ssize_t) bounding_box.height; y++)
2025  {
2026  PixelInfo
2027  composite,
2028  pixel;
2029 
2030  double
2031  alpha,
2032  offset;
2033 
2034  register Quantum
2035  *magick_restrict q;
2036 
2037  register ssize_t
2038  i,
2039  x;
2040 
2041  ssize_t
2042  j;
2043 
2044  if (status == MagickFalse)
2045  continue;
2046  q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
2047  if (q == (Quantum *) NULL)
2048  {
2049  status=MagickFalse;
2050  continue;
2051  }
2052  pixel=zero;
2053  composite=zero;
2054  offset=GetStopColorOffset(gradient,0,y);
2055  if (gradient->type != RadialGradient)
2056  offset*=PerceptibleReciprocal(length);
2057  for (x=bounding_box.x; x < (ssize_t) bounding_box.width; x++)
2058  {
2059  GetPixelInfoPixel(image,q,&pixel);
2060  switch (gradient->spread)
2061  {
2062  case UndefinedSpread:
2063  case PadSpread:
2064  {
2065  if ((x != (ssize_t) ceil(gradient_vector->x1-0.5)) ||
2066  (y != (ssize_t) ceil(gradient_vector->y1-0.5)))
2067  {
2068  offset=GetStopColorOffset(gradient,x,y);
2069  if (gradient->type != RadialGradient)
2070  offset*=PerceptibleReciprocal(length);
2071  }
2072  for (i=0; i < (ssize_t) gradient->number_stops; i++)
2073  if (offset < gradient->stops[i].offset)
2074  break;
2075  if ((offset < 0.0) || (i == 0))
2076  composite=gradient->stops[0].color;
2077  else
2078  if ((offset > 1.0) || (i == (ssize_t) gradient->number_stops))
2079  composite=gradient->stops[gradient->number_stops-1].color;
2080  else
2081  {
2082  j=i;
2083  i--;
2084  alpha=(offset-gradient->stops[i].offset)/
2085  (gradient->stops[j].offset-gradient->stops[i].offset);
2086  CompositePixelInfoBlend(&gradient->stops[i].color,1.0-alpha,
2087  &gradient->stops[j].color,alpha,&composite);
2088  }
2089  break;
2090  }
2091  case ReflectSpread:
2092  {
2093  if ((x != (ssize_t) ceil(gradient_vector->x1-0.5)) ||
2094  (y != (ssize_t) ceil(gradient_vector->y1-0.5)))
2095  {
2096  offset=GetStopColorOffset(gradient,x,y);
2097  if (gradient->type != RadialGradient)
2098  offset*=PerceptibleReciprocal(length);
2099  }
2100  if (offset < 0.0)
2101  offset=(-offset);
2102  if ((ssize_t) fmod(offset,2.0) == 0)
2103  offset=fmod(offset,1.0);
2104  else
2105  offset=1.0-fmod(offset,1.0);
2106  for (i=0; i < (ssize_t) gradient->number_stops; i++)
2107  if (offset < gradient->stops[i].offset)
2108  break;
2109  if (i == 0)
2110  composite=gradient->stops[0].color;
2111  else
2112  if (i == (ssize_t) gradient->number_stops)
2113  composite=gradient->stops[gradient->number_stops-1].color;
2114  else
2115  {
2116  j=i;
2117  i--;
2118  alpha=(offset-gradient->stops[i].offset)/
2119  (gradient->stops[j].offset-gradient->stops[i].offset);
2120  CompositePixelInfoBlend(&gradient->stops[i].color,1.0-alpha,
2121  &gradient->stops[j].color,alpha,&composite);
2122  }
2123  break;
2124  }
2125  case RepeatSpread:
2126  {
2128  antialias;
2129 
2130  double
2131  repeat;
2132 
2133  antialias=MagickFalse;
2134  repeat=0.0;
2135  if ((x != (ssize_t) ceil(gradient_vector->x1-0.5)) ||
2136  (y != (ssize_t) ceil(gradient_vector->y1-0.5)))
2137  {
2138  offset=GetStopColorOffset(gradient,x,y);
2139  if (gradient->type == LinearGradient)
2140  {
2141  repeat=fmod(offset,length);
2142  if (repeat < 0.0)
2143  repeat=length-fmod(-repeat,length);
2144  else
2145  repeat=fmod(offset,length);
2146  antialias=(repeat < length) && ((repeat+1.0) > length) ?
2148  offset=PerceptibleReciprocal(length)*repeat;
2149  }
2150  else
2151  {
2152  repeat=fmod(offset,gradient->radius);
2153  if (repeat < 0.0)
2154  repeat=gradient->radius-fmod(-repeat,gradient->radius);
2155  else
2156  repeat=fmod(offset,gradient->radius);
2157  antialias=repeat+1.0 > gradient->radius ? MagickTrue :
2158  MagickFalse;
2159  offset=repeat/gradient->radius;
2160  }
2161  }
2162  for (i=0; i < (ssize_t) gradient->number_stops; i++)
2163  if (offset < gradient->stops[i].offset)
2164  break;
2165  if (i == 0)
2166  composite=gradient->stops[0].color;
2167  else
2168  if (i == (ssize_t) gradient->number_stops)
2169  composite=gradient->stops[gradient->number_stops-1].color;
2170  else
2171  {
2172  j=i;
2173  i--;
2174  alpha=(offset-gradient->stops[i].offset)/
2175  (gradient->stops[j].offset-gradient->stops[i].offset);
2176  if (antialias != MagickFalse)
2177  {
2178  if (gradient->type == LinearGradient)
2179  alpha=length-repeat;
2180  else
2181  alpha=gradient->radius-repeat;
2182  i=0;
2183  j=(ssize_t) gradient->number_stops-1L;
2184  }
2185  CompositePixelInfoBlend(&gradient->stops[i].color,1.0-alpha,
2186  &gradient->stops[j].color,alpha,&composite);
2187  }
2188  break;
2189  }
2190  }
2191  CompositePixelInfoOver(&composite,composite.alpha,&pixel,pixel.alpha,
2192  &pixel);
2193  SetPixelViaPixelInfo(image,&pixel,q);
2194  q+=GetPixelChannels(image);
2195  }
2196  if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
2197  status=MagickFalse;
2198  }
2199  image_view=DestroyCacheView(image_view);
2200  return(status);
2201 }
2202 
2203 /*
2204 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2205 % %
2206 % %
2207 % %
2208 % D r a w I m a g e %
2209 % %
2210 % %
2211 % %
2212 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2213 %
2214 % DrawImage() draws a graphic primitive on your image. The primitive
2215 % may be represented as a string or filename. Precede the filename with an
2216 % "at" sign (@) and the contents of the file are drawn on the image. You
2217 % can affect how text is drawn by setting one or more members of the draw
2218 % info structure.
2219 %
2220 % The format of the DrawImage method is:
2221 %
2222 % MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info,
2223 % ExceptionInfo *exception)
2224 %
2225 % A description of each parameter follows:
2226 %
2227 % o image: the image.
2228 %
2229 % o draw_info: the draw info.
2230 %
2231 % o exception: return any errors or warnings in this structure.
2232 %
2233 */
2234 
2236  const size_t pad)
2237 {
2238  double
2239  extent;
2240 
2241  size_t
2242  quantum;
2243 
2244  /*
2245  Check if there is enough storage for drawing pimitives.
2246  */
2247  extent=(double) mvg_info->offset+pad+PrimitiveExtentPad;
2248  quantum=sizeof(**mvg_info->primitive_info);
2249  if (((extent*quantum) < (double) SSIZE_MAX) &&
2250  ((extent*quantum) < (double) GetMaxMemoryRequest()))
2251  {
2252  if (extent <= (double) *mvg_info->extent)
2253  return(MagickTrue);
2254  *mvg_info->primitive_info=ResizeQuantumMemory(*mvg_info->primitive_info,
2255  (size_t) extent,quantum);
2256  if (*mvg_info->primitive_info != (PrimitiveInfo *) NULL)
2257  {
2258  *mvg_info->extent=(size_t) extent;
2259  return(MagickTrue);
2260  }
2261  }
2262  /*
2263  Reallocation failed, allocate a primitive to facilitate unwinding.
2264  */
2265  (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
2266  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
2267  if (*mvg_info->primitive_info != (PrimitiveInfo *) NULL)
2269  *mvg_info->primitive_info);
2271  (void) memset(*mvg_info->primitive_info,0,PrimitiveExtentPad*quantum);
2272  *mvg_info->extent=1;
2273  return(MagickFalse);
2274 }
2275 
2276 static SplayTreeInfo *GetMVGMacros(const char *primitive)
2277 {
2278  char
2279  *token;
2280 
2281  const char
2282  *q;
2283 
2284  size_t
2285  extent;
2286 
2288  *macros;
2289 
2290  /*
2291  Scan graphic primitives for definitions and classes.
2292  */
2293  if (primitive == (const char *) NULL)
2294  return((SplayTreeInfo *) NULL);
2297  token=AcquireString(primitive);
2298  extent=strlen(token)+MagickPathExtent;
2299  for (q=primitive; *q != '\0'; )
2300  {
2301  GetNextToken(q,&q,extent,token);
2302  if (*token == '\0')
2303  break;
2304  if (LocaleCompare("push",token) == 0)
2305  {
2306  register const char
2307  *end,
2308  *start;
2309 
2310  GetNextToken(q,&q,extent,token);
2311  if (*q == '"')
2312  {
2313  char
2314  name[MagickPathExtent];
2315 
2316  const char
2317  *p;
2318 
2319  ssize_t
2320  n;
2321 
2322  /*
2323  Named macro (e.g. push graphic-context "wheel").
2324  */
2325  GetNextToken(q,&q,extent,token);
2326  start=q;
2327  end=q;
2328  (void) CopyMagickString(name,token,MagickPathExtent);
2329  n=1;
2330  for (p=q; *p != '\0'; )
2331  {
2332  GetNextToken(p,&p,extent,token);
2333  if (*token == '\0')
2334  break;
2335  if (LocaleCompare(token,"pop") == 0)
2336  {
2337  end=p-strlen(token)-1;
2338  n--;
2339  }
2340  if (LocaleCompare(token,"push") == 0)
2341  n++;
2342  if ((n == 0) && (end > start))
2343  {
2344  char
2345  *macro;
2346 
2347  /*
2348  Extract macro.
2349  */
2350  GetNextToken(p,&p,extent,token);
2351  macro=AcquireString(start);
2352  macro[end-start]='\0';
2353  (void) AddValueToSplayTree(macros,ConstantString(name),
2354  ConstantString(macro));
2355  macro=DestroyString(macro);
2356  break;
2357  }
2358  }
2359  }
2360  }
2361  }
2362  token=DestroyString(token);
2363  return(macros);
2364 }
2365 
2366 static inline MagickBooleanType IsPoint(const char *point)
2367 {
2368  char
2369  *p;
2370 
2371  double
2372  value;
2373 
2374  value=StringToDouble(point,&p);
2375  return((fabs(value) < MagickEpsilon) && (p == point) ? MagickFalse :
2376  MagickTrue);
2377 }
2378 
2379 static inline MagickBooleanType TracePoint(PrimitiveInfo *primitive_info,
2380  const PointInfo point)
2381 {
2382  primitive_info->coordinates=1;
2383  primitive_info->closed_subpath=MagickFalse;
2384  primitive_info->point=point;
2385  return(MagickTrue);
2386 }
2387 
2389  const DrawInfo *draw_info,const size_t depth,ExceptionInfo *exception)
2390 {
2391 #define RenderImageTag "Render/Image"
2392 
2393  AffineMatrix
2394  affine,
2395  current;
2396 
2397  char
2398  keyword[MagickPathExtent],
2399  geometry[MagickPathExtent],
2400  *next_token,
2401  pattern[MagickPathExtent],
2402  *primitive,
2403  *token;
2404 
2405  const char
2406  *q;
2407 
2408  double
2409  angle,
2410  coordinates,
2411  cursor,
2412  factor,
2413  primitive_extent;
2414 
2415  DrawInfo
2416  *clone_info,
2417  **graphic_context;
2418 
2420  proceed;
2421 
2423  status;
2424 
2425  MVGInfo
2426  mvg_info;
2427 
2428  PointInfo
2429  point;
2430 
2432  *primitive_info;
2433 
2435  primitive_type;
2436 
2437  register const char
2438  *p;
2439 
2440  register ssize_t
2441  i,
2442  x;
2443 
2444  SegmentInfo
2445  bounds;
2446 
2447  size_t
2448  extent,
2449  number_points,
2450  number_stops;
2451 
2453  *macros;
2454 
2455  ssize_t
2456  defsDepth,
2457  j,
2458  k,
2459  n,
2460  symbolDepth;
2461 
2462  StopInfo
2463  *stops;
2464 
2465  TypeMetric
2466  metrics;
2467 
2468  assert(image != (Image *) NULL);
2469  assert(image->signature == MagickCoreSignature);
2470  if (image->debug != MagickFalse)
2471  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2472  assert(draw_info != (DrawInfo *) NULL);
2473  assert(draw_info->signature == MagickCoreSignature);
2474  if (image->debug != MagickFalse)
2475  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
2476  if (depth > MagickMaxRecursionDepth)
2477  ThrowBinaryException(DrawError,"VectorGraphicsNestedTooDeeply",
2478  image->filename);
2479  if ((draw_info->primitive == (char *) NULL) ||
2480  (*draw_info->primitive == '\0'))
2481  return(MagickFalse);
2482  if (image->debug != MagickFalse)
2483  (void) LogMagickEvent(DrawEvent,GetMagickModule(),"begin draw-image");
2484  if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
2485  return(MagickFalse);
2486  if (image->alpha_trait == UndefinedPixelTrait)
2487  {
2488  status=SetImageAlphaChannel(image,OpaqueAlphaChannel,exception);
2489  if (status == MagickFalse)
2490  return(status);
2491  }
2492  primitive=(char *) NULL;
2493  if (*draw_info->primitive != '@')
2494  primitive=AcquireString(draw_info->primitive);
2495  else
2496  if ((strlen(draw_info->primitive) > 1) &&
2497  (*(draw_info->primitive+1) != '-'))
2498  primitive=FileToString(draw_info->primitive+1,~0UL,exception);
2499  if (primitive == (char *) NULL)
2500  return(MagickFalse);
2501  primitive_extent=(double) strlen(primitive);
2502  (void) SetImageArtifact(image,"MVG",primitive);
2503  n=0;
2504  number_stops=0;
2505  stops=(StopInfo *) NULL;
2506  /*
2507  Allocate primitive info memory.
2508  */
2509  graphic_context=(DrawInfo **) AcquireMagickMemory(sizeof(*graphic_context));
2510  if (graphic_context == (DrawInfo **) NULL)
2511  {
2512  primitive=DestroyString(primitive);
2513  ThrowBinaryException(ResourceLimitError,"MemoryAllocationFailed",
2514  image->filename);
2515  }
2516  number_points=PrimitiveExtentPad;
2517  primitive_info=(PrimitiveInfo *) AcquireQuantumMemory((size_t) number_points,
2518  sizeof(*primitive_info));
2519  if (primitive_info == (PrimitiveInfo *) NULL)
2520  {
2521  primitive=DestroyString(primitive);
2522  for ( ; n >= 0; n--)
2523  graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
2524  graphic_context=(DrawInfo **) RelinquishMagickMemory(graphic_context);
2525  ThrowBinaryException(ResourceLimitError,"MemoryAllocationFailed",
2526  image->filename);
2527  }
2528  (void) memset(primitive_info,0,(size_t) number_points*
2529  sizeof(*primitive_info));
2530  mvg_info.primitive_info=(&primitive_info);
2531  mvg_info.extent=(&number_points);
2532  mvg_info.offset=0;
2533  mvg_info.exception=exception;
2534  graphic_context[n]=CloneDrawInfo((ImageInfo *) NULL,draw_info);
2535  graphic_context[n]->viewbox=image->page;
2536  if ((image->page.width == 0) || (image->page.height == 0))
2537  {
2538  graphic_context[n]->viewbox.width=image->columns;
2539  graphic_context[n]->viewbox.height=image->rows;
2540  }
2541  token=AcquireString(primitive);
2542  extent=strlen(token)+MagickPathExtent;
2543  defsDepth=0;
2544  symbolDepth=0;
2545  cursor=0.0;
2546  macros=GetMVGMacros(primitive);
2547  status=MagickTrue;
2548  for (q=primitive; *q != '\0'; )
2549  {
2550  /*
2551  Interpret graphic primitive.
2552  */
2553  GetNextToken(q,&q,MagickPathExtent,keyword);
2554  if (*keyword == '\0')
2555  break;
2556  if (*keyword == '#')
2557  {
2558  /*
2559  Comment.
2560  */
2561  while ((*q != '\n') && (*q != '\0'))
2562  q++;
2563  continue;
2564  }
2565  p=q-strlen(keyword)-1;
2566  primitive_type=UndefinedPrimitive;
2567  current=graphic_context[n]->affine;
2568  GetAffineMatrix(&affine);
2569  switch (*keyword)
2570  {
2571  case ';':
2572  break;
2573  case 'a':
2574  case 'A':
2575  {
2576  if (LocaleCompare("affine",keyword) == 0)
2577  {
2578  GetNextToken(q,&q,extent,token);
2579  affine.sx=StringToDouble(token,&next_token);
2580  if (token == next_token)
2581  ThrowPointExpectedException(token,exception);
2582  GetNextToken(q,&q,extent,token);
2583  if (*token == ',')
2584  GetNextToken(q,&q,extent,token);
2585  affine.rx=StringToDouble(token,&next_token);
2586  if (token == next_token)
2587  ThrowPointExpectedException(token,exception);
2588  GetNextToken(q,&q,extent,token);
2589  if (*token == ',')
2590  GetNextToken(q,&q,extent,token);
2591  affine.ry=StringToDouble(token,&next_token);
2592  if (token == next_token)
2593  ThrowPointExpectedException(token,exception);
2594  GetNextToken(q,&q,extent,token);
2595  if (*token == ',')
2596  GetNextToken(q,&q,extent,token);
2597  affine.sy=StringToDouble(token,&next_token);
2598  if (token == next_token)
2599  ThrowPointExpectedException(token,exception);
2600  GetNextToken(q,&q,extent,token);
2601  if (*token == ',')
2602  GetNextToken(q,&q,extent,token);
2603  affine.tx=StringToDouble(token,&next_token);
2604  if (token == next_token)
2605  ThrowPointExpectedException(token,exception);
2606  GetNextToken(q,&q,extent,token);
2607  if (*token == ',')
2608  GetNextToken(q,&q,extent,token);
2609  affine.ty=StringToDouble(token,&next_token);
2610  if (token == next_token)
2611  ThrowPointExpectedException(token,exception);
2612  break;
2613  }
2614  if (LocaleCompare("alpha",keyword) == 0)
2615  {
2616  primitive_type=AlphaPrimitive;
2617  break;
2618  }
2619  if (LocaleCompare("arc",keyword) == 0)
2620  {
2621  primitive_type=ArcPrimitive;
2622  break;
2623  }
2624  status=MagickFalse;
2625  break;
2626  }
2627  case 'b':
2628  case 'B':
2629  {
2630  if (LocaleCompare("bezier",keyword) == 0)
2631  {
2632  primitive_type=BezierPrimitive;
2633  break;
2634  }
2635  if (LocaleCompare("border-color",keyword) == 0)
2636  {
2637  GetNextToken(q,&q,extent,token);
2638  status&=QueryColorCompliance(token,AllCompliance,
2639  &graphic_context[n]->border_color,exception);
2640  break;
2641  }
2642  status=MagickFalse;
2643  break;
2644  }
2645  case 'c':
2646  case 'C':
2647  {
2648  if (LocaleCompare("class",keyword) == 0)
2649  {
2650  const char
2651  *mvg_class;
2652 
2653  GetNextToken(q,&q,extent,token);
2654  if (*token == '\0')
2655  {
2656  status=MagickFalse;
2657  break;
2658  }
2659  mvg_class=(const char *) GetValueFromSplayTree(macros,token);
2660  if (mvg_class != (const char *) NULL)
2661  {
2662  char
2663  *elements;
2664 
2665  ssize_t
2666  offset;
2667 
2668  /*
2669  Inject class elements in stream.
2670  */
2671  offset=(ssize_t) (p-primitive);
2672  elements=AcquireString(primitive);
2673  elements[offset]='\0';
2674  (void) ConcatenateString(&elements,mvg_class);
2675  (void) ConcatenateString(&elements,"\n");
2676  (void) ConcatenateString(&elements,q);
2677  primitive=DestroyString(primitive);
2678  primitive=elements;
2679  q=primitive+offset;
2680  }
2681  break;
2682  }
2683  if (LocaleCompare("clip-path",keyword) == 0)
2684  {
2685  const char
2686  *clip_path;
2687 
2688  /*
2689  Take a node from within the MVG document, and duplicate it here.
2690  */
2691  GetNextToken(q,&q,extent,token);
2692  if (*token == '\0')
2693  {
2694  status=MagickFalse;
2695  break;
2696  }
2697  (void) CloneString(&graphic_context[n]->clip_mask,token);
2698  clip_path=(const char *) GetValueFromSplayTree(macros,token);
2699  if (clip_path != (const char *) NULL)
2700  {
2701  if (graphic_context[n]->clipping_mask != (Image *) NULL)
2702  graphic_context[n]->clipping_mask=
2703  DestroyImage(graphic_context[n]->clipping_mask);
2704  graphic_context[n]->clipping_mask=DrawClippingMask(image,
2705  graphic_context[n],token,clip_path,exception);
2706  if (draw_info->compliance != SVGCompliance)
2707  status&=DrawClipPath(image,graphic_context[n],
2708  graphic_context[n]->clip_mask,exception);
2709  }
2710  break;
2711  }
2712  if (LocaleCompare("clip-rule",keyword) == 0)
2713  {
2714  ssize_t
2715  fill_rule;
2716 
2717  GetNextToken(q,&q,extent,token);
2719  token);
2720  if (fill_rule == -1)
2721  {
2722  status=MagickFalse;
2723  break;
2724  }
2725  graphic_context[n]->fill_rule=(FillRule) fill_rule;
2726  break;
2727  }
2728  if (LocaleCompare("clip-units",keyword) == 0)
2729  {
2730  ssize_t
2731  clip_units;
2732 
2733  GetNextToken(q,&q,extent,token);
2735  token);
2736  if (clip_units == -1)
2737  {
2738  status=MagickFalse;
2739  break;
2740  }
2741  graphic_context[n]->clip_units=(ClipPathUnits) clip_units;
2742  if (clip_units == ObjectBoundingBox)
2743  {
2744  GetAffineMatrix(&current);
2745  affine.sx=draw_info->bounds.x2;
2746  affine.sy=draw_info->bounds.y2;
2747  affine.tx=draw_info->bounds.x1;
2748  affine.ty=draw_info->bounds.y1;
2749  break;
2750  }
2751  break;
2752  }
2753  if (LocaleCompare("circle",keyword) == 0)
2754  {
2755  primitive_type=CirclePrimitive;
2756  break;
2757  }
2758  if (LocaleCompare("color",keyword) == 0)
2759  {
2760  primitive_type=ColorPrimitive;
2761  break;
2762  }
2763  if (LocaleCompare("compliance",keyword) == 0)
2764  {
2765  /*
2766  MVG compliance associates a clipping mask with an image; SVG
2767  compliance associates a clipping mask with a graphics context.
2768  */
2769  GetNextToken(q,&q,extent,token);
2770  graphic_context[n]->compliance=(ComplianceType) ParseCommandOption(
2772  break;
2773  }
2774  status=MagickFalse;
2775  break;
2776  }
2777  case 'd':
2778  case 'D':
2779  {
2780  if (LocaleCompare("decorate",keyword) == 0)
2781  {
2782  ssize_t
2783  decorate;
2784 
2785  GetNextToken(q,&q,extent,token);
2787  token);
2788  if (decorate == -1)
2789  {
2790  status=MagickFalse;
2791  break;
2792  }
2793  graphic_context[n]->decorate=(DecorationType) decorate;
2794  break;
2795  }
2796  if (LocaleCompare("density",keyword) == 0)
2797  {
2798  GetNextToken(q,&q,extent,token);
2799  (void) CloneString(&graphic_context[n]->density,token);
2800  break;
2801  }
2802  if (LocaleCompare("direction",keyword) == 0)
2803  {
2804  ssize_t
2805  direction;
2806 
2807  GetNextToken(q,&q,extent,token);
2809  token);
2810  if (direction == -1)
2811  status=MagickFalse;
2812  else
2813  graphic_context[n]->direction=(DirectionType) direction;
2814  break;
2815  }
2816  status=MagickFalse;
2817  break;
2818  }
2819  case 'e':
2820  case 'E':
2821  {
2822  if (LocaleCompare("ellipse",keyword) == 0)
2823  {
2824  primitive_type=EllipsePrimitive;
2825  break;
2826  }
2827  if (LocaleCompare("encoding",keyword) == 0)
2828  {
2829  GetNextToken(q,&q,extent,token);
2830  (void) CloneString(&graphic_context[n]->encoding,token);
2831  break;
2832  }
2833  status=MagickFalse;
2834  break;
2835  }
2836  case 'f':
2837  case 'F':
2838  {
2839  if (LocaleCompare("fill",keyword) == 0)
2840  {
2841  GetNextToken(q,&q,extent,token);
2842  if (graphic_context[n]->clip_path != MagickFalse)
2843  break;
2844  (void) FormatLocaleString(pattern,MagickPathExtent,"%s",token);
2845  if (GetImageArtifact(image,pattern) != (const char *) NULL)
2846  (void) DrawPatternPath(image,draw_info,token,
2847  &graphic_context[n]->fill_pattern,exception);
2848  else
2849  {
2850  status&=QueryColorCompliance(token,AllCompliance,
2851  &graphic_context[n]->fill,exception);
2852  if (graphic_context[n]->fill_alpha != OpaqueAlpha)
2853  graphic_context[n]->fill.alpha=graphic_context[n]->fill_alpha;
2854  }
2855  break;
2856  }
2857  if (LocaleCompare("fill-opacity",keyword) == 0)
2858  {
2859  double
2860  opacity;
2861 
2862  GetNextToken(q,&q,extent,token);
2863  if (graphic_context[n]->clip_path != MagickFalse)
2864  break;
2865  factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
2866  opacity=MagickMin(MagickMax(factor*
2867  StringToDouble(token,&next_token),0.0),1.0);
2868  if (token == next_token)
2869  ThrowPointExpectedException(token,exception);
2870  graphic_context[n]->fill_alpha*=opacity;
2871  if (graphic_context[n]->fill_alpha != OpaqueAlpha)
2872  graphic_context[n]->fill.alpha=graphic_context[n]->fill_alpha;
2873  break;
2874  }
2875  if (LocaleCompare("fill-rule",keyword) == 0)
2876  {
2877  ssize_t
2878  fill_rule;
2879 
2880  GetNextToken(q,&q,extent,token);
2882  token);
2883  if (fill_rule == -1)
2884  {
2885  status=MagickFalse;
2886  break;
2887  }
2888  graphic_context[n]->fill_rule=(FillRule) fill_rule;
2889  break;
2890  }
2891  if (LocaleCompare("font",keyword) == 0)
2892  {
2893  GetNextToken(q,&q,extent,token);
2894  (void) CloneString(&graphic_context[n]->font,token);
2895  if (LocaleCompare("none",token) == 0)
2896  graphic_context[n]->font=(char *) RelinquishMagickMemory(
2897  graphic_context[n]->font);
2898  break;
2899  }
2900  if (LocaleCompare("font-family",keyword) == 0)
2901  {
2902  GetNextToken(q,&q,extent,token);
2903  (void) CloneString(&graphic_context[n]->family,token);
2904  break;
2905  }
2906  if (LocaleCompare("font-size",keyword) == 0)
2907  {
2908  GetNextToken(q,&q,extent,token);
2909  graphic_context[n]->pointsize=StringToDouble(token,&next_token);
2910  if (token == next_token)
2911  ThrowPointExpectedException(token,exception);
2912  break;
2913  }
2914  if (LocaleCompare("font-stretch",keyword) == 0)
2915  {
2916  ssize_t
2917  stretch;
2918 
2919  GetNextToken(q,&q,extent,token);
2921  if (stretch == -1)
2922  {
2923  status=MagickFalse;
2924  break;
2925  }
2926  graphic_context[n]->stretch=(StretchType) stretch;
2927  break;
2928  }
2929  if (LocaleCompare("font-style",keyword) == 0)
2930  {
2931  ssize_t
2932  style;
2933 
2934  GetNextToken(q,&q,extent,token);
2936  if (style == -1)
2937  {
2938  status=MagickFalse;
2939  break;
2940  }
2941  graphic_context[n]->style=(StyleType) style;
2942  break;
2943  }
2944  if (LocaleCompare("font-weight",keyword) == 0)
2945  {
2946  ssize_t
2947  weight;
2948 
2949  GetNextToken(q,&q,extent,token);
2951  if (weight == -1)
2952  weight=(ssize_t) StringToUnsignedLong(token);
2953  graphic_context[n]->weight=(size_t) weight;
2954  break;
2955  }
2956  status=MagickFalse;
2957  break;
2958  }
2959  case 'g':
2960  case 'G':
2961  {
2962  if (LocaleCompare("gradient-units",keyword) == 0)
2963  {
2964  GetNextToken(q,&q,extent,token);
2965  break;
2966  }
2967  if (LocaleCompare("gravity",keyword) == 0)
2968  {
2969  ssize_t
2970  gravity;
2971 
2972  GetNextToken(q,&q,extent,token);
2974  if (gravity == -1)
2975  {
2976  status=MagickFalse;
2977  break;
2978  }
2979  graphic_context[n]->gravity=(GravityType) gravity;
2980  break;
2981  }
2982  status=MagickFalse;
2983  break;
2984  }
2985  case 'i':
2986  case 'I':
2987  {
2988  if (LocaleCompare("image",keyword) == 0)
2989  {
2990  ssize_t
2991  compose;
2992 
2993  primitive_type=ImagePrimitive;
2994  GetNextToken(q,&q,extent,token);
2996  if (compose == -1)
2997  {
2998  status=MagickFalse;
2999  break;
3000  }
3001  graphic_context[n]->compose=(CompositeOperator) compose;
3002  break;
3003  }
3004  if (LocaleCompare("interline-spacing",keyword) == 0)
3005  {
3006  GetNextToken(q,&q,extent,token);
3007  graphic_context[n]->interline_spacing=StringToDouble(token,
3008  &next_token);
3009  if (token == next_token)
3010  ThrowPointExpectedException(token,exception);
3011  break;
3012  }
3013  if (LocaleCompare("interword-spacing",keyword) == 0)
3014  {
3015  GetNextToken(q,&q,extent,token);
3016  graphic_context[n]->interword_spacing=StringToDouble(token,
3017  &next_token);
3018  if (token == next_token)
3019  ThrowPointExpectedException(token,exception);
3020  break;
3021  }
3022  status=MagickFalse;
3023  break;
3024  }
3025  case 'k':
3026  case 'K':
3027  {
3028  if (LocaleCompare("kerning",keyword) == 0)
3029  {
3030  GetNextToken(q,&q,extent,token);
3031  graphic_context[n]->kerning=StringToDouble(token,&next_token);
3032  if (token == next_token)
3033  ThrowPointExpectedException(token,exception);
3034  break;
3035  }
3036  status=MagickFalse;
3037  break;
3038  }
3039  case 'l':
3040  case 'L':
3041  {
3042  if (LocaleCompare("letter-spacing",keyword) == 0)
3043  {
3044  GetNextToken(q,&q,extent,token);
3045  clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
3046  clone_info->text=AcquireString(" ");
3047  status&=GetTypeMetrics(image,clone_info,&metrics,exception);
3048  graphic_context[n]->kerning=metrics.width*
3049  StringToDouble(token,&next_token);
3050  clone_info=DestroyDrawInfo(clone_info);
3051  if (token == next_token)
3052  ThrowPointExpectedException(token,exception);
3053  break;
3054  }
3055  if (LocaleCompare("line",keyword) == 0)
3056  {
3057  primitive_type=LinePrimitive;
3058  break;
3059  }
3060  status=MagickFalse;
3061  break;
3062  }
3063  case 'm':
3064  case 'M':
3065  {
3066  if (LocaleCompare("mask",keyword) == 0)
3067  {
3068  const char
3069  *mask_path;
3070 
3071  /*
3072  Take a node from within the MVG document, and duplicate it here.
3073  */
3074  GetNextToken(q,&q,extent,token);
3075  mask_path=(const char *) GetValueFromSplayTree(macros,token);
3076  if (mask_path != (const char *) NULL)
3077  {
3078  if (graphic_context[n]->composite_mask != (Image *) NULL)
3079  graphic_context[n]->composite_mask=
3080  DestroyImage(graphic_context[n]->composite_mask);
3081  graphic_context[n]->composite_mask=DrawCompositeMask(image,
3082  graphic_context[n],token,mask_path,exception);
3083  if (draw_info->compliance != SVGCompliance)
3084  status=SetImageMask(image,CompositePixelMask,
3085  graphic_context[n]->composite_mask,exception);
3086  }
3087  break;
3088  }
3089  break;
3090  }
3091  case 'o':
3092  case 'O':
3093  {
3094  if (LocaleCompare("offset",keyword) == 0)
3095  {
3096  GetNextToken(q,&q,extent,token);
3097  break;
3098  }
3099  if (LocaleCompare("opacity",keyword) == 0)
3100  {
3101  double
3102  opacity;
3103 
3104  GetNextToken(q,&q,extent,token);
3105  if (graphic_context[n]->clip_path != MagickFalse)
3106  break;
3107  factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3108  opacity=MagickMin(MagickMax(factor*
3109  StringToDouble(token,&next_token),0.0),1.0);
3110  if (token == next_token)
3111  ThrowPointExpectedException(token,exception);
3112  graphic_context[n]->fill_alpha*=opacity;
3113  if (graphic_context[n]->fill_alpha != OpaqueAlpha)
3114  graphic_context[n]->fill.alpha=graphic_context[n]->fill_alpha;
3115  graphic_context[n]->stroke_alpha*=opacity;
3116  if (graphic_context[n]->stroke_alpha != OpaqueAlpha)
3117  graphic_context[n]->stroke.alpha=graphic_context[n]->stroke_alpha;
3118  break;
3119  }
3120  status=MagickFalse;
3121  break;
3122  }
3123  case 'p':
3124  case 'P':
3125  {
3126  if (LocaleCompare("path",keyword) == 0)
3127  {
3128  primitive_type=PathPrimitive;
3129  break;
3130  }
3131  if (LocaleCompare("point",keyword) == 0)
3132  {
3133  primitive_type=PointPrimitive;
3134  break;
3135  }
3136  if (LocaleCompare("polyline",keyword) == 0)
3137  {
3138  primitive_type=PolylinePrimitive;
3139  break;
3140  }
3141  if (LocaleCompare("polygon",keyword) == 0)
3142  {
3143  primitive_type=PolygonPrimitive;
3144  break;
3145  }
3146  if (LocaleCompare("pop",keyword) == 0)
3147  {
3148  GetNextToken(q,&q,extent,token);
3149  if (LocaleCompare("class",token) == 0)
3150  break;
3151  if (LocaleCompare("clip-path",token) == 0)
3152  break;
3153  if (LocaleCompare("defs",token) == 0)
3154  {
3155  defsDepth--;
3156  graphic_context[n]->render=defsDepth > 0 ? MagickFalse :
3157  MagickTrue;
3158  break;
3159  }
3160  if (LocaleCompare("gradient",token) == 0)
3161  break;
3162  if (LocaleCompare("graphic-context",token) == 0)
3163  {
3164  if (n <= 0)
3165  {
3166  (void) ThrowMagickException(exception,GetMagickModule(),
3167  DrawError,"UnbalancedGraphicContextPushPop","`%s'",token);
3168  status=MagickFalse;
3169  n=0;
3170  break;
3171  }
3172  if ((graphic_context[n]->clip_mask != (char *) NULL) &&
3173  (draw_info->compliance != SVGCompliance))
3174  if (LocaleCompare(graphic_context[n]->clip_mask,
3175  graphic_context[n-1]->clip_mask) != 0)
3176  status=SetImageMask(image,WritePixelMask,(Image *) NULL,
3177  exception);
3178  graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
3179  n--;
3180  break;
3181  }
3182  if (LocaleCompare("mask",token) == 0)
3183  break;
3184  if (LocaleCompare("pattern",token) == 0)
3185  break;
3186  if (LocaleCompare("symbol",token) == 0)
3187  {
3188  symbolDepth--;
3189  graphic_context[n]->render=symbolDepth > 0 ? MagickFalse :
3190  MagickTrue;
3191  break;
3192  }
3193  status=MagickFalse;
3194  break;
3195  }
3196  if (LocaleCompare("push",keyword) == 0)
3197  {
3198  GetNextToken(q,&q,extent,token);
3199  if (LocaleCompare("class",token) == 0)
3200  {
3201  /*
3202  Class context.
3203  */
3204  for (p=q; *q != '\0'; )
3205  {
3206  GetNextToken(q,&q,extent,token);
3207  if (LocaleCompare(token,"pop") != 0)
3208  continue;
3209  GetNextToken(q,(const char **) NULL,extent,token);
3210  if (LocaleCompare(token,"class") != 0)
3211  continue;
3212  break;
3213  }
3214  GetNextToken(q,&q,extent,token);
3215  break;
3216  }
3217  if (LocaleCompare("clip-path",token) == 0)
3218  {
3219  char
3220  name[MaxTextExtent];
3221 
3222  const char
3223  *clip_path;
3224 
3225  GetNextToken(q,&q,extent,token);
3226  (void) FormatLocaleString(name,MaxTextExtent,"%s",token);
3227  clip_path=(const char *) GetValueFromSplayTree(macros,name);
3228  if (clip_path != (const char *) NULL)
3229  (void) SetImageArtifact(image,name,clip_path);
3230  break;
3231  }
3232  if (LocaleCompare("defs",token) == 0)
3233  {
3234  defsDepth++;
3235  graphic_context[n]->render=defsDepth > 0 ? MagickFalse :
3236  MagickTrue;
3237  break;
3238  }
3239  if (LocaleCompare("gradient",token) == 0)
3240  {
3241  char
3242  key[2*MagickPathExtent],
3243  name[MagickPathExtent],
3244  type[MagickPathExtent];
3245 
3246  SegmentInfo
3247  segment;
3248 
3249  GetNextToken(q,&q,extent,token);
3250  (void) CopyMagickString(name,token,MagickPathExtent);
3251  GetNextToken(q,&q,extent,token);
3252  (void) CopyMagickString(type,token,MagickPathExtent);
3253  GetNextToken(q,&q,extent,token);
3254  segment.x1=StringToDouble(token,&next_token);
3255  if (token == next_token)
3256  ThrowPointExpectedException(token,exception);
3257  GetNextToken(q,&q,extent,token);
3258  if (*token == ',')
3259  GetNextToken(q,&q,extent,token);
3260  segment.y1=StringToDouble(token,&next_token);
3261  if (token == next_token)
3262  ThrowPointExpectedException(token,exception);
3263  GetNextToken(q,&q,extent,token);
3264  if (*token == ',')
3265  GetNextToken(q,&q,extent,token);
3266  segment.x2=StringToDouble(token,&next_token);
3267  if (token == next_token)
3268  ThrowPointExpectedException(token,exception);
3269  GetNextToken(q,&q,extent,token);
3270  if (*token == ',')
3271  GetNextToken(q,&q,extent,token);
3272  segment.y2=StringToDouble(token,&next_token);
3273  if (token == next_token)
3274  ThrowPointExpectedException(token,exception);
3275  if (LocaleCompare(type,"radial") == 0)
3276  {
3277  GetNextToken(q,&q,extent,token);
3278  if (*token == ',')
3279  GetNextToken(q,&q,extent,token);
3280  }
3281  for (p=q; *q != '\0'; )
3282  {
3283  GetNextToken(q,&q,extent,token);
3284  if (LocaleCompare(token,"pop") != 0)
3285  continue;
3286  GetNextToken(q,(const char **) NULL,extent,token);
3287  if (LocaleCompare(token,"gradient") != 0)
3288  continue;
3289  break;
3290  }
3291  if ((q == (char *) NULL) || (p == (char *) NULL) || ((q-4) < p))
3292  {
3293  status=MagickFalse;
3294  break;
3295  }
3296  (void) CopyMagickString(token,p,(size_t) (q-p-4+1));
3297  bounds.x1=graphic_context[n]->affine.sx*segment.x1+
3298  graphic_context[n]->affine.ry*segment.y1+
3299  graphic_context[n]->affine.tx;
3300  bounds.y1=graphic_context[n]->affine.rx*segment.x1+
3301  graphic_context[n]->affine.sy*segment.y1+
3302  graphic_context[n]->affine.ty;
3303  bounds.x2=graphic_context[n]->affine.sx*segment.x2+
3304  graphic_context[n]->affine.ry*segment.y2+
3305  graphic_context[n]->affine.tx;
3306  bounds.y2=graphic_context[n]->affine.rx*segment.x2+
3307  graphic_context[n]->affine.sy*segment.y2+
3308  graphic_context[n]->affine.ty;
3309  (void) FormatLocaleString(key,MagickPathExtent,"%s",name);
3310  (void) SetImageArtifact(image,key,token);
3311  (void) FormatLocaleString(key,MagickPathExtent,"%s-type",name);
3312  (void) SetImageArtifact(image,key,type);
3313  (void) FormatLocaleString(key,MagickPathExtent,"%s-geometry",
3314  name);
3315  (void) FormatLocaleString(geometry,MagickPathExtent,
3316  "%gx%g%+.15g%+.15g",
3317  MagickMax(fabs(bounds.x2-bounds.x1+1.0),1.0),
3318  MagickMax(fabs(bounds.y2-bounds.y1+1.0),1.0),
3319  bounds.x1,bounds.y1);
3320  (void) SetImageArtifact(image,key,geometry);
3321  GetNextToken(q,&q,extent,token);
3322  break;
3323  }
3324  if (LocaleCompare("graphic-context",token) == 0)
3325  {
3326  n++;
3327  graphic_context=(DrawInfo **) ResizeQuantumMemory(
3328  graphic_context,(size_t) (n+1),sizeof(*graphic_context));
3329  if (graphic_context == (DrawInfo **) NULL)
3330  {
3331  (void) ThrowMagickException(exception,GetMagickModule(),
3332  ResourceLimitError,"MemoryAllocationFailed","`%s'",
3333  image->filename);
3334  break;
3335  }
3336  graphic_context[n]=CloneDrawInfo((ImageInfo *) NULL,
3337  graphic_context[n-1]);
3338  if (*q == '"')
3339  GetNextToken(q,&q,extent,token);
3340  break;
3341  }
3342  if (LocaleCompare("mask",token) == 0)
3343  {
3344  GetNextToken(q,&q,extent,token);
3345  break;
3346  }
3347  if (LocaleCompare("pattern",token) == 0)
3348  {
3349  char
3350  key[2*MagickPathExtent],
3351  name[MagickPathExtent];
3352 
3354  bounds;
3355 
3356  GetNextToken(q,&q,extent,token);
3357  (void) CopyMagickString(name,token,MagickPathExtent);
3358  GetNextToken(q,&q,extent,token);
3359  bounds.x=(ssize_t) ceil(StringToDouble(token,&next_token)-0.5);
3360  if (token == next_token)
3361  ThrowPointExpectedException(token,exception);
3362  GetNextToken(q,&q,extent,token);
3363  if (*token == ',')
3364  GetNextToken(q,&q,extent,token);
3365  bounds.y=(ssize_t) ceil(StringToDouble(token,&next_token)-0.5);
3366  if (token == next_token)
3367  ThrowPointExpectedException(token,exception);
3368  GetNextToken(q,&q,extent,token);
3369  if (*token == ',')
3370  GetNextToken(q,&q,extent,token);
3371  bounds.width=(size_t) floor(StringToDouble(token,&next_token)+
3372  0.5);
3373  if (token == next_token)
3374  ThrowPointExpectedException(token,exception);
3375  GetNextToken(q,&q,extent,token);
3376  if (*token == ',')
3377  GetNextToken(q,&q,extent,token);
3378  bounds.height=(size_t) floor(StringToDouble(token,&next_token)+
3379  0.5);
3380  if (token == next_token)
3381  ThrowPointExpectedException(token,exception);
3382  for (p=q; *q != '\0'; )
3383  {
3384  GetNextToken(q,&q,extent,token);
3385  if (LocaleCompare(token,"pop") != 0)
3386  continue;
3387  GetNextToken(q,(const char **) NULL,extent,token);
3388  if (LocaleCompare(token,"pattern") != 0)
3389  continue;
3390  break;
3391  }
3392  if ((q == (char *) NULL) || (p == (char *) NULL) || ((q-4) < p))
3393  {
3394  status=MagickFalse;
3395  break;
3396  }
3397  (void) CopyMagickString(token,p,(size_t) (q-p-4+1));
3398  (void) FormatLocaleString(key,MagickPathExtent,"%s",name);
3399  (void) SetImageArtifact(image,key,token);
3400  (void) FormatLocaleString(key,MagickPathExtent,"%s-geometry",
3401  name);
3402  (void) FormatLocaleString(geometry,MagickPathExtent,
3403  "%.20gx%.20g%+.20g%+.20g",(double) bounds.width,(double)
3404  bounds.height,(double) bounds.x,(double) bounds.y);
3405  (void) SetImageArtifact(image,key,geometry);
3406  GetNextToken(q,&q,extent,token);
3407  break;
3408  }
3409  if (LocaleCompare("symbol",token) == 0)
3410  {
3411  symbolDepth++;
3412  graphic_context[n]->render=symbolDepth > 0 ? MagickFalse :
3413  MagickTrue;
3414  break;
3415  }
3416  status=MagickFalse;
3417  break;
3418  }
3419  status=MagickFalse;
3420  break;
3421  }
3422  case 'r':
3423  case 'R':
3424  {
3425  if (LocaleCompare("rectangle",keyword) == 0)
3426  {
3427  primitive_type=RectanglePrimitive;
3428  break;
3429  }
3430  if (LocaleCompare("rotate",keyword) == 0)
3431  {
3432  GetNextToken(q,&q,extent,token);
3433  angle=StringToDouble(token,&next_token);
3434  if (token == next_token)
3435  ThrowPointExpectedException(token,exception);
3436  affine.sx=cos(DegreesToRadians(fmod((double) angle,360.0)));
3437  affine.rx=sin(DegreesToRadians(fmod((double) angle,360.0)));
3438  affine.ry=(-sin(DegreesToRadians(fmod((double) angle,360.0))));
3439  affine.sy=cos(DegreesToRadians(fmod((double) angle,360.0)));
3440  break;
3441  }
3442  if (LocaleCompare("roundRectangle",keyword) == 0)
3443  {
3444  primitive_type=RoundRectanglePrimitive;
3445  break;
3446  }
3447  status=MagickFalse;
3448  break;
3449  }
3450  case 's':
3451  case 'S':
3452  {
3453  if (LocaleCompare("scale",keyword) == 0)
3454  {
3455  GetNextToken(q,&q,extent,token);
3456  affine.sx=StringToDouble(token,&next_token);
3457  if (token == next_token)
3458  ThrowPointExpectedException(token,exception);
3459  GetNextToken(q,&q,extent,token);
3460  if (*token == ',')
3461  GetNextToken(q,&q,extent,token);
3462  affine.sy=StringToDouble(token,&next_token);
3463  if (token == next_token)
3464  ThrowPointExpectedException(token,exception);
3465  break;
3466  }
3467  if (LocaleCompare("skewX",keyword) == 0)
3468  {
3469  GetNextToken(q,&q,extent,token);
3470  angle=StringToDouble(token,&next_token);
3471  if (token == next_token)
3472  ThrowPointExpectedException(token,exception);
3473  affine.ry=sin(DegreesToRadians(angle));
3474  break;
3475  }
3476  if (LocaleCompare("skewY",keyword) == 0)
3477  {
3478  GetNextToken(q,&q,extent,token);
3479  angle=StringToDouble(token,&next_token);
3480  if (token == next_token)
3481  ThrowPointExpectedException(token,exception);
3482  affine.rx=(-tan(DegreesToRadians(angle)/2.0));
3483  break;
3484  }
3485  if (LocaleCompare("stop-color",keyword) == 0)
3486  {
3487  PixelInfo
3488  stop_color;
3489 
3490  number_stops++;
3491  if (number_stops == 1)
3492  stops=(StopInfo *) AcquireQuantumMemory(2,sizeof(*stops));
3493  else
3494  if (number_stops > 2)
3495  stops=(StopInfo *) ResizeQuantumMemory(stops,number_stops,
3496  sizeof(*stops));
3497  if (stops == (StopInfo *) NULL)
3498  {
3499  (void) ThrowMagickException(exception,GetMagickModule(),
3500  ResourceLimitError,"MemoryAllocationFailed","`%s'",
3501  image->filename);
3502  break;
3503  }
3504  GetNextToken(q,&q,extent,token);
3505  status&=QueryColorCompliance(token,AllCompliance,&stop_color,
3506  exception);
3507  stops[number_stops-1].color=stop_color;
3508  GetNextToken(q,&q,extent,token);
3509  factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3510  stops[number_stops-1].offset=factor*StringToDouble(token,
3511  &next_token);
3512  if (token == next_token)
3513  ThrowPointExpectedException(token,exception);
3514  break;
3515  }
3516  if (LocaleCompare("stroke",keyword) == 0)
3517  {
3518  GetNextToken(q,&q,extent,token);
3519  if (graphic_context[n]->clip_path != MagickFalse)
3520  break;
3521  (void) FormatLocaleString(pattern,MagickPathExtent,"%s",token);
3522  if (GetImageArtifact(image,pattern) != (const char *) NULL)
3523  (void) DrawPatternPath(image,draw_info,token,
3524  &graphic_context[n]->stroke_pattern,exception);
3525  else
3526  {
3527  status&=QueryColorCompliance(token,AllCompliance,
3528  &graphic_context[n]->stroke,exception);
3529  if (graphic_context[n]->stroke_alpha != OpaqueAlpha)
3530  graphic_context[n]->stroke.alpha=
3531  graphic_context[n]->stroke_alpha;
3532  }
3533  break;
3534  }
3535  if (LocaleCompare("stroke-antialias",keyword) == 0)
3536  {
3537  GetNextToken(q,&q,extent,token);
3538  graphic_context[n]->stroke_antialias=StringToLong(token) != 0 ?
3540  break;
3541  }
3542  if (LocaleCompare("stroke-dasharray",keyword) == 0)
3543  {
3544  if (graphic_context[n]->dash_pattern != (double *) NULL)
3545  graphic_context[n]->dash_pattern=(double *)
3546  RelinquishMagickMemory(graphic_context[n]->dash_pattern);
3547  if (IsPoint(q) != MagickFalse)
3548  {
3549  const char
3550  *r;
3551 
3552  r=q;
3553  GetNextToken(r,&r,extent,token);
3554  if (*token == ',')
3555  GetNextToken(r,&r,extent,token);
3556  for (x=0; IsPoint(token) != MagickFalse; x++)
3557  {
3558  GetNextToken(r,&r,extent,token);
3559  if (*token == ',')
3560  GetNextToken(r,&r,extent,token);
3561  }
3562  graphic_context[n]->dash_pattern=(double *)
3563  AcquireQuantumMemory((size_t) (2*x+4),
3564  sizeof(*graphic_context[n]->dash_pattern));
3565  if (graphic_context[n]->dash_pattern == (double *) NULL)
3566  {
3567  (void) ThrowMagickException(exception,GetMagickModule(),
3568  ResourceLimitError,"MemoryAllocationFailed","`%s'",
3569  image->filename);
3570  status=MagickFalse;
3571  break;
3572  }
3573  (void) memset(graphic_context[n]->dash_pattern,0,(size_t)
3574  (2*x+4)*sizeof(*graphic_context[n]->dash_pattern));
3575  for (j=0; j < x; j++)
3576  {
3577  GetNextToken(q,&q,extent,token);
3578  if (*token == ',')
3579  GetNextToken(q,&q,extent,token);
3580  graphic_context[n]->dash_pattern[j]=StringToDouble(token,
3581  &next_token);
3582  if (token == next_token)
3583  ThrowPointExpectedException(token,exception);
3584  if (graphic_context[n]->dash_pattern[j] < 0.0)
3585  status=MagickFalse;
3586  }
3587  if ((x & 0x01) != 0)
3588  for ( ; j < (2*x); j++)
3589  graphic_context[n]->dash_pattern[j]=
3590  graphic_context[n]->dash_pattern[j-x];
3591  graphic_context[n]->dash_pattern[j]=0.0;
3592  break;
3593  }
3594  GetNextToken(q,&q,extent,token);
3595  break;
3596  }
3597  if (LocaleCompare("stroke-dashoffset",keyword) == 0)
3598  {
3599  GetNextToken(q,&q,extent,token);
3600  graphic_context[n]->dash_offset=StringToDouble(token,&next_token);
3601  if (token == next_token)
3602  ThrowPointExpectedException(token,exception);
3603  break;
3604  }
3605  if (LocaleCompare("stroke-linecap",keyword) == 0)
3606  {
3607  ssize_t
3608  linecap;
3609 
3610  GetNextToken(q,&q,extent,token);
3612  if (linecap == -1)
3613  {
3614  status=MagickFalse;
3615  break;
3616  }
3617  graphic_context[n]->linecap=(LineCap) linecap;
3618  break;
3619  }
3620  if (LocaleCompare("stroke-linejoin",keyword) == 0)
3621  {
3622  ssize_t
3623  linejoin;
3624 
3625  GetNextToken(q,&q,extent,token);
3627  token);
3628  if (linejoin == -1)
3629  {
3630  status=MagickFalse;
3631  break;
3632  }
3633  graphic_context[n]->linejoin=(LineJoin) linejoin;
3634  break;
3635  }
3636  if (LocaleCompare("stroke-miterlimit",keyword) == 0)
3637  {
3638  GetNextToken(q,&q,extent,token);
3639  graphic_context[n]->miterlimit=StringToUnsignedLong(token);
3640  break;
3641  }
3642  if (LocaleCompare("stroke-opacity",keyword) == 0)
3643  {
3644  double
3645  opacity;
3646 
3647  GetNextToken(q,&q,extent,token);
3648  if (graphic_context[n]->clip_path != MagickFalse)
3649  break;
3650  factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3651  opacity=MagickMin(MagickMax(factor*
3652  StringToDouble(token,&next_token),0.0),1.0);
3653  if (token == next_token)
3654  ThrowPointExpectedException(token,exception);
3655  graphic_context[n]->stroke_alpha*=opacity;
3656  if (graphic_context[n]->stroke_alpha != OpaqueAlpha)
3657  graphic_context[n]->stroke.alpha=graphic_context[n]->stroke_alpha;
3658  break;
3659  }
3660  if (LocaleCompare("stroke-width",keyword) == 0)
3661  {
3662  GetNextToken(q,&q,extent,token);
3663  if (graphic_context[n]->clip_path != MagickFalse)
3664  break;
3665  graphic_context[n]->stroke_width=StringToDouble(token,&next_token);
3666  if (token == next_token)
3667  ThrowPointExpectedException(token,exception);
3668  break;
3669  }
3670  status=MagickFalse;
3671  break;
3672  }
3673  case 't':
3674  case 'T':
3675  {
3676  if (LocaleCompare("text",keyword) == 0)
3677  {
3678  primitive_type=TextPrimitive;
3679  cursor=0.0;
3680  break;
3681  }
3682  if (LocaleCompare("text-align",keyword) == 0)
3683  {
3684  ssize_t
3685  align;
3686 
3687  GetNextToken(q,&q,extent,token);
3689  if (align == -1)
3690  {
3691  status=MagickFalse;
3692  break;
3693  }
3694  graphic_context[n]->align=(AlignType) align;
3695  break;
3696  }
3697  if (LocaleCompare("text-anchor",keyword) == 0)
3698  {
3699  ssize_t
3700  align;
3701 
3702  GetNextToken(q,&q,extent,token);
3704  if (align == -1)
3705  {
3706  status=MagickFalse;
3707  break;
3708  }
3709  graphic_context[n]->align=(AlignType) align;
3710  break;
3711  }
3712  if (LocaleCompare("text-antialias",keyword) == 0)
3713  {
3714  GetNextToken(q,&q,extent,token);
3715  graphic_context[n]->text_antialias=StringToLong(token) != 0 ?
3717  break;
3718  }
3719  if (LocaleCompare("text-undercolor",keyword) == 0)
3720  {
3721  GetNextToken(q,&q,extent,token);
3722  status&=QueryColorCompliance(token,AllCompliance,
3723  &graphic_context[n]->undercolor,exception);
3724  break;
3725  }
3726  if (LocaleCompare("translate",keyword) == 0)
3727  {
3728  GetNextToken(q,&q,extent,token);
3729  affine.tx=StringToDouble(token,&next_token);
3730  if (token == next_token)
3731  ThrowPointExpectedException(token,exception);
3732  GetNextToken(q,&q,extent,token);
3733  if (*token == ',')
3734  GetNextToken(q,&q,extent,token);
3735  affine.ty=StringToDouble(token,&next_token);
3736  if (token == next_token)
3737  ThrowPointExpectedException(token,exception);
3738  cursor=0.0;
3739  break;
3740  }
3741  status=MagickFalse;
3742  break;
3743  }
3744  case 'u':
3745  case 'U':
3746  {
3747  if (LocaleCompare("use",keyword) == 0)
3748  {
3749  const char
3750  *use;
3751 
3752  /*
3753  Get a macro from the MVG document, and "use" it here.
3754  */
3755  GetNextToken(q,&q,extent,token);
3756  use=(const char *) GetValueFromSplayTree(macros,token);
3757  if (use != (const char *) NULL)
3758  {
3759  clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
3760  (void) CloneString(&clone_info->primitive,use);
3761  status=RenderMVGContent(image,clone_info,depth+1,exception);
3762  clone_info=DestroyDrawInfo(clone_info);
3763  }
3764  break;
3765  }
3766  break;
3767  }
3768  case 'v':
3769  case 'V':
3770  {
3771  if (LocaleCompare("viewbox",keyword) == 0)
3772  {
3773  GetNextToken(q,&q,extent,token);
3774  graphic_context[n]->viewbox.x=(ssize_t) ceil(StringToDouble(token,
3775  &next_token)-0.5);
3776  if (token == next_token)
3777  ThrowPointExpectedException(token,exception);
3778  GetNextToken(q,&q,extent,token);
3779  if (*token == ',')
3780  GetNextToken(q,&q,extent,token);
3781  graphic_context[n]->viewbox.y=(ssize_t) ceil(StringToDouble(token,
3782  &next_token)-0.5);
3783  if (token == next_token)
3784  ThrowPointExpectedException(token,exception);
3785  GetNextToken(q,&q,extent,token);
3786  if (*token == ',')
3787  GetNextToken(q,&q,extent,token);
3788  graphic_context[n]->viewbox.width=(size_t) floor(StringToDouble(
3789  token,&next_token)+0.5);
3790  if (token == next_token)
3791  ThrowPointExpectedException(token,exception);
3792  GetNextToken(q,&q,extent,token);
3793  if (*token == ',')
3794  GetNextToken(q,&q,extent,token);
3795  graphic_context[n]->viewbox.height=(size_t) floor(StringToDouble(
3796  token,&next_token)+0.5);
3797  if (token == next_token)
3798  ThrowPointExpectedException(token,exception);
3799  break;
3800  }
3801  status=MagickFalse;
3802  break;
3803  }
3804  case 'w':
3805  case 'W':
3806  {
3807  if (LocaleCompare("word-spacing",keyword) == 0)
3808  {
3809  GetNextToken(q,&q,extent,token);
3810  graphic_context[n]->interword_spacing=StringToDouble(token,
3811  &next_token);
3812  if (token == next_token)
3813  ThrowPointExpectedException(token,exception);
3814  break;
3815  }
3816  status=MagickFalse;
3817  break;
3818  }
3819  default:
3820  {
3821  status=MagickFalse;
3822  break;
3823  }
3824  }
3825  if (status == MagickFalse)
3826  break;
3827  if ((fabs(affine.sx-1.0) >= MagickEpsilon) ||
3828  (fabs(affine.rx) >= MagickEpsilon) || (fabs(affine.ry) >= MagickEpsilon) ||
3829  (fabs(affine.sy-1.0) >= MagickEpsilon) ||
3830  (fabs(affine.tx) >= MagickEpsilon) || (fabs(affine.ty) >= MagickEpsilon))
3831  {
3832  graphic_context[n]->affine.sx=current.sx*affine.sx+current.ry*affine.rx;
3833  graphic_context[n]->affine.rx=current.rx*affine.sx+current.sy*affine.rx;
3834  graphic_context[n]->affine.ry=current.sx*affine.ry+current.ry*affine.sy;
3835  graphic_context[n]->affine.sy=current.rx*affine.ry+current.sy*affine.sy;
3836  graphic_context[n]->affine.tx=current.sx*affine.tx+current.ry*affine.ty+
3837  current.tx;
3838  graphic_context[n]->affine.ty=current.rx*affine.tx+current.sy*affine.ty+
3839  current.ty;
3840  }
3841  if (primitive_type == UndefinedPrimitive)
3842  {
3843  if (*q == '\0')
3844  {
3845  if (number_stops > 1)
3846  {
3847  GradientType
3848  type;
3849 
3850  type=LinearGradient;
3851  if (draw_info->gradient.type == RadialGradient)
3852  type=RadialGradient;
3853  (void) GradientImage(image,type,PadSpread,stops,number_stops,
3854  exception);
3855  }
3856  if (number_stops > 0)
3857  stops=(StopInfo *) RelinquishMagickMemory(stops);
3858  }
3859  if ((image->debug != MagickFalse) && (q > p))
3860  (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int)
3861  (q-p-1),p);
3862  continue;
3863  }
3864  /*
3865  Parse the primitive attributes.
3866  */
3867  i=0;
3868  mvg_info.offset=i;
3869  j=0;
3870  primitive_info[0].point.x=0.0;
3871  primitive_info[0].point.y=0.0;
3872  primitive_info[0].coordinates=0;
3873  primitive_info[0].method=FloodfillMethod;
3874  primitive_info[0].closed_subpath=MagickFalse;
3875  for (x=0; *q != '\0'; x++)
3876  {
3877  /*
3878  Define points.
3879  */
3880  if (IsPoint(q) == MagickFalse)
3881  break;
3882  GetNextToken(q,&q,extent,token);
3883  point.x=StringToDouble(token,&next_token);
3884  if (token == next_token)
3885  ThrowPointExpectedException(token,exception);
3886  GetNextToken(q,&q,extent,token);
3887  if (*token == ',')
3888  GetNextToken(q,&q,extent,token);
3889  point.y=StringToDouble(token,&next_token);
3890  if (token == next_token)
3891  ThrowPointExpectedException(token,exception);
3892  GetNextToken(q,(const char **) NULL,extent,token);
3893  if (*token == ',')
3894  GetNextToken(q,&q,extent,token);
3895  primitive_info[i].primitive=primitive_type;
3896  primitive_info[i].point=point;
3897  primitive_info[i].coordinates=0;
3898  primitive_info[i].method=FloodfillMethod;
3899  primitive_info[i].closed_subpath=MagickFalse;
3900  i++;
3901  mvg_info.offset=i;
3902  if (i < (ssize_t) number_points)
3903  continue;
3904  status&=CheckPrimitiveExtent(&mvg_info,number_points);
3905  }
3906  if (status == MagickFalse)
3907  break;
3908  primitive_info[j].primitive=primitive_type;
3909  primitive_info[j].coordinates=(size_t) x;
3910  primitive_info[j].method=FloodfillMethod;
3911  primitive_info[j].closed_subpath=MagickFalse;
3912  primitive_info[j].text=(char *) NULL;
3913  /*
3914  Circumscribe primitive within a circle.
3915  */
3916  bounds.x1=primitive_info[j].point.x;
3917  bounds.y1=primitive_info[j].point.y;
3918  bounds.x2=primitive_info[j].point.x;
3919  bounds.y2=primitive_info[j].point.y;
3920  for (k=1; k < (ssize_t) primitive_info[j].coordinates; k++)
3921  {
3922  point=primitive_info[j+k].point;
3923  if (point.x < bounds.x1)
3924  bounds.x1=point.x;
3925  if (point.y < bounds.y1)
3926  bounds.y1=point.y;
3927  if (point.x > bounds.x2)
3928  bounds.x2=point.x;
3929  if (point.y > bounds.y2)
3930  bounds.y2=point.y;
3931  }
3932  /*
3933  Speculate how many points our primitive might consume.
3934  */
3935  coordinates=(double) primitive_info[j].coordinates;
3936  switch (primitive_type)
3937  {
3938  case RectanglePrimitive:
3939  {
3940  coordinates*=5.0;
3941  break;
3942  }
3944  {
3945  double
3946  alpha,
3947  beta,
3948  radius;
3949 
3950  alpha=bounds.x2-bounds.x1;
3951  beta=bounds.y2-bounds.y1;
3952  radius=hypot((double) alpha,(double) beta);
3953  coordinates*=5.0;
3954  coordinates+=2.0*((size_t) ceil((double) MagickPI*radius))+6.0*
3955  BezierQuantum+360.0;
3956  break;
3957  }
3958  case BezierPrimitive:
3959  {
3960  coordinates=(double) (BezierQuantum*primitive_info[j].coordinates);
3961  if (primitive_info[j].coordinates > (107*BezierQuantum))
3962  {
3963  (void) ThrowMagickException(exception,GetMagickModule(),DrawError,
3964  "TooManyBezierCoordinates","`%s'",token);
3965  status=MagickFalse;
3966  break;
3967  }
3968  break;
3969  }
3970  case PathPrimitive:
3971  {
3972  char
3973  *s,
3974  *t;
3975 
3976  GetNextToken(q,&q,extent,token);
3977  coordinates=1.0;
3978  t=token;
3979  for (s=token; *s != '\0'; s=t)
3980  {
3981  double
3982  value;
3983 
3984  value=StringToDouble(s,&t);
3985  (void) value;
3986  if (s == t)
3987  {
3988  t++;
3989  continue;
3990  }
3991  coordinates++;
3992  }
3993  for (s=token; *s != '\0'; s++)
3994  if (strspn(s,"AaCcQqSsTt") != 0)
3995  coordinates+=(20.0*BezierQuantum)+360.0;
3996  break;
3997  }
3998  case CirclePrimitive:
3999  case ArcPrimitive:
4000  case EllipsePrimitive:
4001  {
4002  double
4003  alpha,
4004  beta,
4005  radius;
4006 
4007  alpha=bounds.x2-bounds.x1;
4008  beta=bounds.y2-bounds.y1;
4009  radius=hypot(alpha,beta);
4010  coordinates=2.0*(ceil(MagickPI*radius))+6.0*BezierQuantum+360.0;
4011  if (coordinates > (MaxBezierCoordinates/4))
4012  {
4013  (void) ThrowMagickException(exception,GetMagickModule(),DrawError,
4014  "TooManyBezierCoordinates","`%s'",token);
4015  status=MagickFalse;
4016  }
4017  break;
4018  }
4019  default:
4020  break;
4021  }
4022  if (coordinates > MaxBezierCoordinates)
4023  {
4024  (void) ThrowMagickException(exception,GetMagickModule(),
4025  ResourceLimitError,"MemoryAllocationFailed","`%s'",token);
4026  status=MagickFalse;
4027  }
4028  if (status == MagickFalse)
4029  break;
4030  if (((size_t) (i+coordinates)) >= number_points)
4031  {
4032  /*
4033  Resize based on speculative points required by primitive.
4034  */
4035  number_points+=coordinates+1;
4036  if (number_points < (size_t) coordinates)
4037  {
4038  (void) ThrowMagickException(exception,GetMagickModule(),
4039  ResourceLimitError,"MemoryAllocationFailed","`%s'",
4040  image->filename);
4041  break;
4042  }
4043  mvg_info.offset=i;
4044  status&=CheckPrimitiveExtent(&mvg_info,number_points);
4045  }
4046  status&=CheckPrimitiveExtent(&mvg_info,PrimitiveExtentPad);
4047  if (status == MagickFalse)
4048  break;
4049  mvg_info.offset=j;
4050  switch (primitive_type)
4051  {
4052  case PointPrimitive:
4053  default:
4054  {
4055  if (primitive_info[j].coordinates != 1)
4056  {
4057  status=MagickFalse;
4058  break;
4059  }
4060  status&=TracePoint(primitive_info+j,primitive_info[j].point);
4061  i=(ssize_t) (j+primitive_info[j].coordinates);
4062  break;
4063  }
4064  case LinePrimitive:
4065  {
4066  if (primitive_info[j].coordinates != 2)
4067  {
4068  status=MagickFalse;
4069  break;
4070  }
4071  status&=TraceLine(primitive_info+j,primitive_info[j].point,
4072  primitive_info[j+1].point);
4073  i=(ssize_t) (j+primitive_info[j].coordinates);
4074  break;
4075  }
4076  case RectanglePrimitive:
4077  {
4078  if (primitive_info[j].coordinates != 2)
4079  {
4080  status=MagickFalse;
4081  break;
4082  }
4083  status&=TraceRectangle(primitive_info+j,primitive_info[j].point,
4084  primitive_info[j+1].point);
4085  i=(ssize_t) (j+primitive_info[j].coordinates);
4086  break;
4087  }
4089  {
4090  if (primitive_info[j].coordinates != 3)
4091  {
4092  status=MagickFalse;
4093  break;
4094  }
4095  if ((primitive_info[j+2].point.x < 0.0) ||
4096  (primitive_info[j+2].point.y < 0.0))
4097  {
4098  status=MagickFalse;
4099  break;
4100  }
4101  if ((primitive_info[j+1].point.x-primitive_info[j].point.x) < 0.0)
4102  {
4103  status=MagickFalse;
4104  break;
4105  }
4106  if ((primitive_info[j+1].point.y-primitive_info[j].point.y) < 0.0)
4107  {
4108  status=MagickFalse;
4109  break;
4110  }
4111  status&=TraceRoundRectangle(&mvg_info,primitive_info[j].point,
4112  primitive_info[j+1].point,primitive_info[j+2].point);
4113  i=(ssize_t) (j+primitive_info[j].coordinates);
4114  break;
4115  }
4116  case ArcPrimitive:
4117  {
4118  if (primitive_info[j].coordinates != 3)
4119  {
4120  primitive_type=UndefinedPrimitive;
4121  break;
4122  }
4123  status&=TraceArc(&mvg_info,primitive_info[j].point,
4124  primitive_info[j+1].point,primitive_info[j+2].point);
4125  i=(ssize_t) (j+primitive_info[j].coordinates);
4126  break;
4127  }
4128  case EllipsePrimitive:
4129  {
4130  if (primitive_info[j].coordinates != 3)
4131  {
4132  status=MagickFalse;
4133  break;
4134  }
4135  if ((primitive_info[j+1].point.x < 0.0) ||
4136  (primitive_info[j+1].point.y < 0.0))
4137  {
4138  status=MagickFalse;
4139  break;
4140  }
4141  status&=TraceEllipse(&mvg_info,primitive_info[j].point,
4142  primitive_info[j+1].point,primitive_info[j+2].point);
4143  i=(ssize_t) (j+primitive_info[j].coordinates);
4144  break;
4145  }
4146  case CirclePrimitive:
4147  {
4148  if (primitive_info[j].coordinates != 2)
4149  {
4150  status=MagickFalse;
4151  break;
4152  }
4153  status&=TraceCircle(&mvg_info,primitive_info[j].point,
4154  primitive_info[j+1].point);
4155  i=(ssize_t) (j+primitive_info[j].coordinates);
4156  break;
4157  }
4158  case PolylinePrimitive:
4159  {
4160  if (primitive_info[j].coordinates < 1)
4161  {
4162  status=MagickFalse;
4163  break;
4164  }
4165  break;
4166  }
4167  case PolygonPrimitive:
4168  {
4169  if (primitive_info[j].coordinates < 3)
4170  {
4171  status=MagickFalse;
4172  break;
4173  }
4174  primitive_info[i]=primitive_info[j];
4175  primitive_info[i].coordinates=0;
4176  primitive_info[j].coordinates++;
4177  primitive_info[j].closed_subpath=MagickTrue;
4178  i++;
4179  break;
4180  }
4181  case BezierPrimitive:
4182  {
4183  if (primitive_info[j].coordinates < 3)
4184  {
4185  status=MagickFalse;
4186  break;
4187  }
4188  status&=TraceBezier(&mvg_info,primitive_info[j].coordinates);
4189  i=(ssize_t) (j+primitive_info[j].coordinates);
4190  break;
4191  }
4192  case PathPrimitive:
4193  {
4194  coordinates=(double) TracePath(&mvg_info,token,exception);
4195  if (coordinates == 0.0)
4196  {
4197  status=MagickFalse;
4198  break;
4199  }
4200  i=(ssize_t) (j+coordinates);
4201  break;
4202  }
4203  case AlphaPrimitive:
4204  case ColorPrimitive:
4205  {
4206  ssize_t
4207  method;
4208 
4209  if (primitive_info[j].coordinates != 1)
4210  {
4211  status=MagickFalse;
4212  break;
4213  }
4214  GetNextToken(q,&q,extent,token);
4216  if (method == -1)
4217  {
4218  status=MagickFalse;
4219  break;
4220  }
4221  primitive_info[j].method=(PaintMethod) method;
4222  break;
4223  }
4224  case TextPrimitive:
4225  {
4226  char
4227  geometry[MagickPathExtent];
4228 
4229  if (primitive_info[j].coordinates != 1)
4230  {
4231  status=MagickFalse;
4232  break;
4233  }
4234  if (*token != ',')
4235  GetNextToken(q,&q,extent,token);
4236  (void) CloneString(&primitive_info[j].text,token);
4237  /*
4238  Compute text cursor offset.
4239  */
4240  clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
4241  if ((fabs(mvg_info.point.x-primitive_info->point.x) < MagickEpsilon) &&
4242  (fabs(mvg_info.point.y-primitive_info->point.y) < MagickEpsilon))
4243  {
4244  mvg_info.point=primitive_info->point;
4245  primitive_info->point.x+=cursor;
4246  }
4247  else
4248  {
4249  mvg_info.point=primitive_info->point;
4250  cursor=0.0;
4251  }
4252  (void) FormatLocaleString(geometry,MagickPathExtent,"%+f%+f",
4253  primitive_info->point.x,primitive_info->point.y);
4254  clone_info->render=MagickFalse;
4255  clone_info->text=AcquireString(token);
4256  status&=GetTypeMetrics(image,clone_info,&metrics,exception);
4257  clone_info=DestroyDrawInfo(clone_info);
4258  cursor+=metrics.width;
4259  break;
4260  }
4261  case ImagePrimitive:
4262  {
4263  if (primitive_info[j].coordinates != 2)
4264  {
4265  status=MagickFalse;
4266  break;
4267  }
4268  GetNextToken(q,&q,extent,token);
4269  (void) CloneString(&primitive_info[j].text,token);
4270  break;
4271  }
4272  }
4273  mvg_info.offset=i;
4274  if ((image->debug != MagickFalse) && (q > p))
4275  (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int) (q-p-1),
4276  p);
4277  if (status == MagickFalse)
4278  break;
4279  primitive_info[i].primitive=UndefinedPrimitive;
4280  if (i == 0)
4281  continue;
4282  /*
4283  Transform points.
4284  */
4285  for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4286  {
4287  point=primitive_info[i].point;
4288  primitive_info[i].point.x=graphic_context[n]->affine.sx*point.x+
4289  graphic_context[n]->affine.ry*point.y+graphic_context[n]->affine.tx;
4290  primitive_info[i].point.y=graphic_context[n]->affine.rx*point.x+
4291  graphic_context[n]->affine.sy*point.y+graphic_context[n]->affine.ty;
4292  point=primitive_info[i].point;
4293  if (point.x < graphic_context[n]->bounds.x1)
4294  graphic_context[n]->bounds.x1=point.x;
4295  if (point.y < graphic_context[n]->bounds.y1)
4296  graphic_context[n]->bounds.y1=point.y;
4297  if (point.x > graphic_context[n]->bounds.x2)
4298  graphic_context[n]->bounds.x2=point.x;
4299  if (point.y > graphic_context[n]->bounds.y2)
4300  graphic_context[n]->bounds.y2=point.y;
4301  if (primitive_info[i].primitive == ImagePrimitive)
4302  break;
4303  if (i >= (ssize_t) number_points)
4304  ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
4305  }
4306  if (graphic_context[n]->render != MagickFalse)
4307  {
4308  if ((n != 0) && (draw_info->compliance != SVGCompliance) &&
4309  (graphic_context[n]->clip_mask != (char *) NULL) &&
4310  (LocaleCompare(graphic_context[n]->clip_mask,
4311  graphic_context[n-1]->clip_mask) != 0))
4312  status&=DrawClipPath(image,graphic_context[n],
4313  graphic_context[n]->clip_mask,exception);
4314  status&=DrawPrimitive(image,graphic_context[n],primitive_info,
4315  exception);
4316  }
4317  proceed=SetImageProgress(image,RenderImageTag,q-primitive,(MagickSizeType)
4318  primitive_extent);
4319  if (proceed == MagickFalse)
4320  break;
4321  if (status == 0)
4322  break;
4323  }
4324  if (image->debug != MagickFalse)
4325  (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end draw-image");
4326  /*
4327  Relinquish resources.
4328  */
4329  macros=DestroySplayTree(macros);
4330  token=DestroyString(token);
4331  if (primitive_info != (PrimitiveInfo *) NULL)
4332  {
4333  for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4334  if ((primitive_info[i].primitive == TextPrimitive) ||
4335  (primitive_info[i].primitive == ImagePrimitive))
4336  if (primitive_info[i].text != (char *) NULL)
4337  primitive_info[i].text=DestroyString(primitive_info[i].text);
4338  primitive_info=(PrimitiveInfo *) RelinquishMagickMemory(primitive_info);
4339  }
4340  primitive=DestroyString(primitive);
4341  if (stops != (StopInfo *) NULL)
4342  stops=(StopInfo *) RelinquishMagickMemory(stops);
4343  for ( ; n >= 0; n--)
4344  graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
4345  graphic_context=(DrawInfo **) RelinquishMagickMemory(graphic_context);
4346  if (status == MagickFalse)
4347  ThrowBinaryException(DrawError,"NonconformingDrawingPrimitiveDefinition",
4348  keyword);
4349  return(status != 0 ? MagickTrue : MagickFalse);
4350 }
4351 
4353  ExceptionInfo *exception)
4354 {
4355  return(RenderMVGContent(image,draw_info,1,exception));
4356 }
4357 
4358 /*
4359 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4360 % %
4361 % %
4362 % %
4363 % D r a w P a t t e r n P a t h %
4364 % %
4365 % %
4366 % %
4367 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4368 %
4369 % DrawPatternPath() draws a pattern.
4370 %
4371 % The format of the DrawPatternPath method is:
4372 %
4373 % MagickBooleanType DrawPatternPath(Image *image,const DrawInfo *draw_info,
4374 % const char *name,Image **pattern,ExceptionInfo *exception)
4375 %
4376 % A description of each parameter follows:
4377 %
4378 % o image: the image.
4379 %
4380 % o draw_info: the draw info.
4381 %
4382 % o name: the pattern name.
4383 %
4384 % o image: the image.
4385 %
4386 % o exception: return any errors or warnings in this structure.
4387 %
4388 */
4390  const DrawInfo *draw_info,const char *name,Image **pattern,
4391  ExceptionInfo *exception)
4392 {
4393  char
4394  property[MagickPathExtent];
4395 
4396  const char
4397  *geometry,
4398  *path,
4399  *type;
4400 
4401  DrawInfo
4402  *clone_info;
4403 
4404  ImageInfo
4405  *image_info;
4406 
4408  status;
4409 
4410  assert(image != (Image *) NULL);
4411  assert(image->signature == MagickCoreSignature);
4412  if (image->debug != MagickFalse)
4413  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4414  assert(draw_info != (const DrawInfo *) NULL);
4415  assert(name != (const char *) NULL);
4416  (void) FormatLocaleString(property,MagickPathExtent,"%s",name);
4417  path=GetImageArtifact(image,property);
4418  if (path == (const char *) NULL)
4419  return(MagickFalse);
4420  (void) FormatLocaleString(property,MagickPathExtent,"%s-geometry",name);
4421  geometry=GetImageArtifact(image,property);
4422  if (geometry == (const char *) NULL)
4423  return(MagickFalse);
4424  if ((*pattern) != (Image *) NULL)
4425  *pattern=DestroyImage(*pattern);
4426  image_info=AcquireImageInfo();
4427  image_info->size=AcquireString(geometry);
4428  *pattern=AcquireImage(image_info,exception);
4429  image_info=DestroyImageInfo(image_info);
4430  (void) QueryColorCompliance("#000000ff",AllCompliance,
4431  &(*pattern)->background_color,exception);
4432  (void) SetImageBackgroundColor(*pattern,exception);
4433  if (image->debug != MagickFalse)
4435  "begin pattern-path %s %s",name,geometry);
4436  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
4437  clone_info->fill_pattern=NewImageList();
4438  clone_info->stroke_pattern=NewImageList();
4439  (void) FormatLocaleString(property,MagickPathExtent,"%s-type",name);
4440  type=GetImageArtifact(image,property);
4441  if (type != (const char *) NULL)
4444  (void) CloneString(&clone_info->primitive,path);
4445  status=RenderMVGContent(*pattern,clone_info,1,exception);
4446  clone_info=DestroyDrawInfo(clone_info);
4447  if (image->debug != MagickFalse)
4448  (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end pattern-path");
4449  return(status);
4450 }
4451 
4452 /*
4453 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4454 % %
4455 % %
4456 % %
4457 + D r a w P o l y g o n P r i m i t i v e %
4458 % %
4459 % %
4460 % %
4461 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4462 %
4463 % DrawPolygonPrimitive() draws a polygon on the image.
4464 %
4465 % The format of the DrawPolygonPrimitive method is:
4466 %
4467 % MagickBooleanType DrawPolygonPrimitive(Image *image,
4468 % const DrawInfo *draw_info,const PrimitiveInfo *primitive_info,
4469 % ExceptionInfo *exception)
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 primitive_info: Specifies a pointer to a PrimitiveInfo structure.
4478 %
4479 % o exception: return any errors or warnings in this structure.
4480 %
4481 */
4482 
4484 {
4485  register ssize_t
4486  i;
4487 
4488  assert(polygon_info != (PolygonInfo **) NULL);
4489  for (i=0; i < (ssize_t) GetMagickResourceLimit(ThreadResource); i++)
4490  if (polygon_info[i] != (PolygonInfo *) NULL)
4491  polygon_info[i]=DestroyPolygonInfo(polygon_info[i]);
4492  polygon_info=(PolygonInfo **) RelinquishMagickMemory(polygon_info);
4493  return(polygon_info);
4494 }
4495 
4497  const PrimitiveInfo *primitive_info)
4498 {
4499  PathInfo
4500  *magick_restrict path_info;
4501 
4502  PolygonInfo
4503  **polygon_info;
4504 
4505  register ssize_t
4506  i;
4507 
4508  size_t
4509  number_threads;
4510 
4511  number_threads=(size_t) GetMagickResourceLimit(ThreadResource);
4512  polygon_info=(PolygonInfo **) AcquireQuantumMemory(number_threads,
4513  sizeof(*polygon_info));
4514  if (polygon_info == (PolygonInfo **) NULL)
4515  return((PolygonInfo **) NULL);
4516  (void) memset(polygon_info,0,number_threads*sizeof(*polygon_info));
4517  path_info=ConvertPrimitiveToPath(primitive_info);
4518  if (path_info == (PathInfo *) NULL)
4519  return(DestroyPolygonThreadSet(polygon_info));
4520  for (i=0; i < (ssize_t) number_threads; i++)
4521  {
4522  polygon_info[i]=ConvertPathToPolygon(path_info);
4523  if (polygon_info[i] == (PolygonInfo *) NULL)
4524  return(DestroyPolygonThreadSet(polygon_info));
4525  }
4526  path_info=(PathInfo *) RelinquishMagickMemory(path_info);
4527  return(polygon_info);
4528 }
4529 
4530 static double GetFillAlpha(PolygonInfo *polygon_info,const double mid,
4531  const MagickBooleanType fill,const FillRule fill_rule,const ssize_t x,
4532  const ssize_t y,double *stroke_alpha)
4533 {
4534  double
4535  alpha,
4536  beta,
4537  distance,
4538  subpath_alpha;
4539 
4540  PointInfo
4541  delta;
4542 
4543  register const PointInfo
4544  *q;
4545 
4546  register EdgeInfo
4547  *p;
4548 
4549  register ssize_t
4550  i;
4551 
4552  ssize_t
4553  j,
4554  winding_number;
4555 
4556  /*
4557  Compute fill & stroke opacity for this (x,y) point.
4558  */
4559  *stroke_alpha=0.0;
4560  subpath_alpha=0.0;
4561  p=polygon_info->edges;
4562  for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4563  {
4564  if ((double) y <= (p->bounds.y1-mid-0.5))
4565  break;
4566  if ((double) y > (p->bounds.y2+mid+0.5))
4567  {
4568  (void) DestroyEdge(polygon_info,(size_t) j);
4569  continue;
4570  }
4571  if (((double) x <= (p->bounds.x1-mid-0.5)) ||
4572  ((double) x > (p->bounds.x2+mid+0.5)))
4573  continue;
4574  i=(ssize_t) MagickMax((double) p->highwater,1.0);
4575  for ( ; i < (ssize_t) p->number_points; i++)
4576  {
4577  if ((double) y <= (p->points[i-1].y-mid-0.5))
4578  break;
4579  if ((double) y > (p->points[i].y+mid+0.5))
4580  continue;
4581  if (p->scanline != (double) y)
4582  {
4583  p->scanline=(double) y;
4584  p->highwater=(size_t) i;
4585  }
4586  /*
4587  Compute distance between a point and an edge.
4588  */
4589  q=p->points+i-1;
4590  delta.x=(q+1)->x-q->x;
4591  delta.y=(q+1)->y-q->y;
4592  beta=delta.x*(x-q->x)+delta.y*(y-q->y);
4593  if (beta <= 0.0)
4594  {
4595  delta.x=(double) x-q->x;
4596  delta.y=(double) y-q->y;
4597  distance=delta.x*delta.x+delta.y*delta.y;
4598  }
4599  else
4600  {
4601  alpha=delta.x*delta.x+delta.y*delta.y;
4602  if (beta >= alpha)
4603  {
4604  delta.x=(double) x-(q+1)->x;
4605  delta.y=(double) y-(q+1)->y;
4606  distance=delta.x*delta.x+delta.y*delta.y;
4607  }
4608  else
4609  {
4610  alpha=PerceptibleReciprocal(alpha);
4611  beta=delta.x*(y-q->y)-delta.y*(x-q->x);
4612  distance=alpha*beta*beta;
4613  }
4614  }
4615  /*
4616  Compute stroke & subpath opacity.
4617  */
4618  beta=0.0;
4619  if (p->ghostline == MagickFalse)
4620  {
4621  alpha=mid+0.5;
4622  if ((*stroke_alpha < 1.0) &&
4623  (distance <= ((alpha+0.25)*(alpha+0.25))))
4624  {
4625  alpha=mid-0.5;
4626  if (distance <= ((alpha+0.25)*(alpha+0.25)))
4627  *stroke_alpha=1.0;
4628  else
4629  {
4630  beta=1.0;
4631  if (fabs(distance-1.0) >= MagickEpsilon)
4632  beta=sqrt((double) distance);
4633  alpha=beta-mid-0.5;
4634  if (*stroke_alpha < ((alpha-0.25)*(alpha-0.25)))
4635  *stroke_alpha=(alpha-0.25)*(alpha-0.25);
4636  }
4637  }
4638  }
4639  if ((fill == MagickFalse) || (distance > 1.0) || (subpath_alpha >= 1.0))
4640  continue;
4641  if (distance <= 0.0)
4642  {
4643  subpath_alpha=1.0;
4644  continue;
4645  }
4646  if (distance > 1.0)
4647  continue;
4648  if (fabs(beta) < MagickEpsilon)
4649  {
4650  beta=1.0;
4651  if (fabs(distance-1.0) >= MagickEpsilon)
4652  beta=sqrt(distance);
4653  }
4654  alpha=beta-1.0;
4655  if (subpath_alpha < (alpha*alpha))
4656  subpath_alpha=alpha*alpha;
4657  }
4658  }
4659  /*
4660  Compute fill opacity.
4661  */
4662  if (fill == MagickFalse)
4663  return(0.0);
4664  if (subpath_alpha >= 1.0)
4665  return(1.0);
4666  /*
4667  Determine winding number.
4668  */
4669  winding_number=0;
4670  p=polygon_info->edges;
4671  for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4672  {
4673  if ((double) y <= p->bounds.y1)
4674  break;
4675  if (((double) y > p->bounds.y2) || ((double) x <= p->bounds.x1))
4676  continue;
4677  if ((double) x > p->bounds.x2)
4678  {
4679  winding_number+=p->direction ? 1 : -1;
4680  continue;
4681  }
4682  i=(ssize_t) MagickMax((double) p->highwater,1.0);
4683  for ( ; i < (ssize_t) (p->number_points-1); i++)
4684  if ((double) y <= p->points[i].y)
4685  break;
4686  q=p->points+i-1;
4687  if ((((q+1)->x-q->x)*(y-q->y)) <= (((q+1)->y-q->y)*(x-q->x)))
4688  winding_number+=p->direction ? 1 : -1;
4689  }
4690  if (fill_rule != NonZeroRule)
4691  {
4692  if ((MagickAbsoluteValue(winding_number) & 0x01) != 0)
4693  return(1.0);
4694  }
4695  else
4696  if (MagickAbsoluteValue(winding_number) != 0)
4697  return(1.0);
4698  return(subpath_alpha);
4699 }
4700 
4702  const DrawInfo *draw_info,const PrimitiveInfo *primitive_info,
4703  ExceptionInfo *exception)
4704 {
4705  CacheView
4706  *image_view;
4707 
4709  fill,
4710  status;
4711 
4712  double
4713  mid;
4714 
4715  PolygonInfo
4716  **magick_restrict polygon_info;
4717 
4718  register EdgeInfo
4719  *p;
4720 
4721  register ssize_t
4722  i;
4723 
4724  SegmentInfo
4725  bounds;
4726 
4727  ssize_t
4728  start_y,
4729  stop_y,
4730  y;
4731 
4732  assert(image != (Image *) NULL);
4733  assert(image->signature == MagickCoreSignature);
4734  if (image->debug != MagickFalse)
4735  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4736  assert(draw_info != (DrawInfo *) NULL);
4737  assert(draw_info->signature == MagickCoreSignature);
4738  assert(primitive_info != (PrimitiveInfo *) NULL);
4739  if (primitive_info->coordinates <= 1)
4740  return(MagickTrue);
4741  /*
4742  Compute bounding box.
4743  */
4744  polygon_info=AcquirePolygonThreadSet(primitive_info);
4745  if (polygon_info == (PolygonInfo **) NULL)
4746  return(MagickFalse);
4747 DisableMSCWarning(4127)
4748  if (0)
4749  {
4750  status=DrawBoundingRectangles(image,draw_info,polygon_info[0],exception);
4751  if (status == MagickFalse)
4752  {
4753  polygon_info=DestroyPolygonThreadSet(polygon_info);
4754  return(status);
4755  }
4756  }
4758  if (image->debug != MagickFalse)
4759  (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin draw-polygon");
4760  fill=(primitive_info->method == FillToBorderMethod) ||
4761  (primitive_info->method == FloodfillMethod) ? MagickTrue : MagickFalse;
4762  mid=ExpandAffine(&draw_info->affine)*SaneStrokeWidth(image,draw_info)/2.0;
4763  bounds=polygon_info[0]->edges[0].bounds;
4764  for (i=1; i < (ssize_t) polygon_info[0]->number_edges; i++)
4765  {
4766  p=polygon_info[0]->edges+i;
4767  if (p->bounds.x1 < bounds.x1)
4768  bounds.x1=p->bounds.x1;
4769  if (p->bounds.y1 < bounds.y1)
4770  bounds.y1=p->bounds.y1;
4771  if (p->bounds.x2 > bounds.x2)
4772  bounds.x2=p->bounds.x2;
4773  if (p->bounds.y2 > bounds.y2)
4774  bounds.y2=p->bounds.y2;
4775  }
4776  bounds.x1-=(mid+1.0);
4777  bounds.y1-=(mid+1.0);
4778  bounds.x2+=(mid+1.0);
4779  bounds.y2+=(mid+1.0);
4780  if ((bounds.x1 >= (double) image->columns) ||
4781  (bounds.y1 >= (double) image->rows) ||
4782  (bounds.x2 <= 0.0) || (bounds.y2 <= 0.0))
4783  {
4784  polygon_info=DestroyPolygonThreadSet(polygon_info);
4785  return(MagickTrue); /* virtual polygon */
4786  }
4787  bounds.x1=bounds.x1 < 0.0 ? 0.0 : bounds.x1 >= (double) image->columns-1.0 ?
4788  (double) image->columns-1.0 : bounds.x1;
4789  bounds.y1=bounds.y1 < 0.0 ? 0.0 : bounds.y1 >= (double) image->rows-1.0 ?
4790  (double) image->rows-1.0 : bounds.y1;
4791  bounds.x2=bounds.x2 < 0.0 ? 0.0 : bounds.x2 >= (double) image->columns-1.0 ?
4792  (double) image->columns-1.0 : bounds.x2;
4793  bounds.y2=bounds.y2 < 0.0 ? 0.0 : bounds.y2 >= (double) image->rows-1.0 ?
4794  (double) image->rows-1.0 : bounds.y2;
4795  status=MagickTrue;
4796  image_view=AcquireAuthenticCacheView(image,exception);
4797  if ((primitive_info->coordinates == 1) ||
4798  (polygon_info[0]->number_edges == 0))
4799  {
4800  /*
4801  Draw point.
4802  */
4803  start_y=(ssize_t) ceil(bounds.y1-0.5);
4804  stop_y=(ssize_t) floor(bounds.y2+0.5);
4805 #if defined(MAGICKCORE_OPENMP_SUPPORT)
4806  #pragma omp parallel for schedule(static) shared(status) \
4807  magick_number_threads(image,image,stop_y-start_y+1,1)
4808 #endif
4809  for (y=start_y; y <= stop_y; y++)
4810  {
4812  sync;
4813 
4814  PixelInfo
4815  pixel;
4816 
4817  register ssize_t
4818  x;
4819 
4820  register Quantum
4821  *magick_restrict q;
4822 
4823  ssize_t
4824  start_x,
4825  stop_x;
4826 
4827  if (status == MagickFalse)
4828  continue;
4829  start_x=(ssize_t) ceil(bounds.x1-0.5);
4830  stop_x=(ssize_t) floor(bounds.x2+0.5);
4831  x=start_x;
4832  q=GetCacheViewAuthenticPixels(image_view,x,y,(size_t) (stop_x-x+1),1,
4833  exception);
4834  if (q == (Quantum *) NULL)
4835  {
4836  status=MagickFalse;
4837  continue;
4838  }
4839  GetPixelInfo(image,&pixel);
4840  for ( ; x <= stop_x; x++)
4841  {
4842  if ((x == (ssize_t) ceil(primitive_info->point.x-0.5)) &&
4843  (y == (ssize_t) ceil(primitive_info->point.y-0.5)))
4844  {
4845  GetFillColor(draw_info,x-start_x,y-start_y,&pixel,exception);
4846  SetPixelViaPixelInfo(image,&pixel,q);
4847  }
4848  q+=GetPixelChannels(image);
4849  }
4850  sync=SyncCacheViewAuthenticPixels(image_view,exception);
4851  if (sync == MagickFalse)
4852  status=MagickFalse;
4853  }
4854  image_view=DestroyCacheView(image_view);
4855  polygon_info=DestroyPolygonThreadSet(polygon_info);
4856  if (image->debug != MagickFalse)
4858  " end draw-polygon");
4859  return(status);
4860  }
4861  /*
4862  Draw polygon or line.
4863  */
4864  start_y=(ssize_t) ceil(bounds.y1-0.5);
4865  stop_y=(ssize_t) floor(bounds.y2+0.5);
4866 #if defined(MAGICKCORE_OPENMP_SUPPORT)
4867  #pragma omp parallel for schedule(static) shared(status) \
4868  magick_number_threads(image,image,stop_y-start_y+1,1)
4869 #endif
4870  for (y=start_y; y <= stop_y; y++)
4871  {
4872  const int
4873  id = GetOpenMPThreadId();
4874 
4875  register Quantum
4876  *magick_restrict q;
4877 
4878  register ssize_t
4879  x;
4880 
4881  ssize_t
4882  start_x,
4883  stop_x;
4884 
4885  if (status == MagickFalse)
4886  continue;
4887  start_x=(ssize_t) ceil(bounds.x1-0.5);
4888  stop_x=(ssize_t) floor(bounds.x2+0.5);
4889  q=GetCacheViewAuthenticPixels(image_view,start_x,y,(size_t) (stop_x-start_x+
4890  1),1,exception);
4891  if (q == (Quantum *) NULL)
4892  {
4893  status=MagickFalse;
4894  continue;
4895  }
4896  for (x=start_x; x <= stop_x; x++)
4897  {
4898  double
4899  fill_alpha,
4900  stroke_alpha;
4901 
4902  PixelInfo
4903  fill_color,
4904  stroke_color;
4905 
4906  /*
4907  Fill and/or stroke.
4908  */
4909  fill_alpha=GetFillAlpha(polygon_info[id],mid,fill,draw_info->fill_rule,
4910  x,y,&stroke_alpha);
4911  if (draw_info->stroke_antialias == MagickFalse)
4912  {
4913  fill_alpha=fill_alpha > 0.25 ? 1.0 : 0.0;
4914  stroke_alpha=stroke_alpha > 0.25 ? 1.0 : 0.0;
4915  }
4916  GetFillColor(draw_info,x-start_x,y-start_y,&fill_color,exception);
4917  CompositePixelOver(image,&fill_color,fill_alpha*fill_color.alpha,q,
4918  (double) GetPixelAlpha(image,q),q);
4919  GetStrokeColor(draw_info,x-start_x,y-start_y,&stroke_color,exception);
4920  CompositePixelOver(image,&stroke_color,stroke_alpha*stroke_color.alpha,q,
4921  (double) GetPixelAlpha(image,q),q);
4922  q+=GetPixelChannels(image);
4923  }
4924  if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
4925  status=MagickFalse;
4926  }
4927  image_view=DestroyCacheView(image_view);
4928  polygon_info=DestroyPolygonThreadSet(polygon_info);
4929  if (image->debug != MagickFalse)
4930  (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-polygon");
4931  return(status);
4932 }
4933 
4934 /*
4935 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4936 % %
4937 % %
4938 % %
4939 % D r a w P r i m i t i v e %
4940 % %
4941 % %
4942 % %
4943 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4944 %
4945 % DrawPrimitive() draws a primitive (line, rectangle, ellipse) on the image.
4946 %
4947 % The format of the DrawPrimitive method is:
4948 %
4949 % MagickBooleanType DrawPrimitive(Image *image,const DrawInfo *draw_info,
4950 % PrimitiveInfo *primitive_info,ExceptionInfo *exception)
4951 %
4952 % A description of each parameter follows:
4953 %
4954 % o image: the image.
4955 %
4956 % o draw_info: the draw info.
4957 %
4958 % o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
4959 %
4960 % o exception: return any errors or warnings in this structure.
4961 %
4962 */
4963 
4964 static void LogPrimitiveInfo(const PrimitiveInfo *primitive_info)
4965 {
4966  const char
4967  *methods[] =
4968  {
4969  "point",
4970  "replace",
4971  "floodfill",
4972  "filltoborder",
4973  "reset",
4974  "?"
4975  };
4976 
4977  PointInfo
4978  p,
4979  q,
4980  point;
4981 
4982  register ssize_t
4983  i,
4984  x;
4985 
4986  ssize_t
4987  coordinates,
4988  y;
4989 
4990  x=(ssize_t) ceil(primitive_info->point.x-0.5);
4991  y=(ssize_t) ceil(primitive_info->point.y-0.5);
4992  switch (primitive_info->primitive)
4993  {
4994  case AlphaPrimitive:
4995  {
4997  "AlphaPrimitive %.20g,%.20g %s",(double) x,(double) y,
4998  methods[primitive_info->method]);
4999  return;
5000  }
5001  case ColorPrimitive:
5002  {
5004  "ColorPrimitive %.20g,%.20g %s",(double) x,(double) y,
5005  methods[primitive_info->method]);
5006  return;
5007  }
5008  case ImagePrimitive:
5009  {
5011  "ImagePrimitive %.20g,%.20g",(double) x,(double) y);
5012  return;
5013  }
5014  case PointPrimitive:
5015  {
5017  "PointPrimitive %.20g,%.20g %s",(double) x,(double) y,
5018  methods[primitive_info->method]);
5019  return;
5020  }
5021  case TextPrimitive:
5022  {
5024  "TextPrimitive %.20g,%.20g",(double) x,(double) y);
5025  return;
5026  }
5027  default:
5028  break;
5029  }
5030  coordinates=0;
5031  p=primitive_info[0].point;
5032  q.x=(-1.0);
5033  q.y=(-1.0);
5034  for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
5035  {
5036  point=primitive_info[i].point;
5037  if (coordinates <= 0)
5038  {
5039  coordinates=(ssize_t) primitive_info[i].coordinates;
5041  " begin open (%.20g)",(double) coordinates);
5042  p=point;
5043  }
5044  point=primitive_info[i].point;
5045  if ((fabs(q.x-point.x) >= MagickEpsilon) ||
5046  (fabs(q.y-point.y) >= MagickEpsilon))
5048  " %.20g: %.18g,%.18g",(double) coordinates,point.x,point.y);
5049  else
5051  " %.20g: %g %g (duplicate)",(double) coordinates,point.x,point.y);
5052  q=point;
5053  coordinates--;
5054  if (coordinates > 0)
5055  continue;
5056  if ((fabs(p.x-point.x) >= MagickEpsilon) ||
5057  (fabs(p.y-point.y) >= MagickEpsilon))
5058  (void) LogMagickEvent(DrawEvent,GetMagickModule()," end last (%.20g)",
5059  (double) coordinates);
5060  else
5061  (void) LogMagickEvent(DrawEvent,GetMagickModule()," end open (%.20g)",
5062  (double) coordinates);
5063  }
5064 }
5065 
5067  const DrawInfo *draw_info,const PrimitiveInfo *primitive_info,
5068  ExceptionInfo *exception)
5069 {
5070  CacheView
5071  *image_view;
5072 
5074  status;
5075 
5076  register ssize_t
5077  i,
5078  x;
5079 
5080  ssize_t
5081  y;
5082 
5083  if (image->debug != MagickFalse)
5084  {
5086  " begin draw-primitive");
5088  " affine: %g,%g,%g,%g,%g,%g",draw_info->affine.sx,
5089  draw_info->affine.rx,draw_info->affine.ry,draw_info->affine.sy,
5090  draw_info->affine.tx,draw_info->affine.ty);
5091  }
5092  status=MagickTrue;
5093  if ((IsGrayColorspace(image->colorspace) != MagickFalse) &&
5094  ((IsPixelInfoGray(&draw_info->fill) == MagickFalse) ||
5095  (IsPixelInfoGray(&draw_info->stroke) == MagickFalse)))
5096  status=SetImageColorspace(image,sRGBColorspace,exception);
5097  if (draw_info->compliance == SVGCompliance)
5098  {
5099  status&=SetImageMask(image,WritePixelMask,draw_info->clipping_mask,
5100  exception);
5101  status&=SetImageMask(image,CompositePixelMask,draw_info->composite_mask,
5102  exception);
5103  }
5104  x=(ssize_t) ceil(primitive_info->point.x-0.5);
5105  y=(ssize_t) ceil(primitive_info->point.y-0.5);
5106  image_view=AcquireAuthenticCacheView(image,exception);
5107  switch (primitive_info->primitive)
5108  {
5109  case AlphaPrimitive:
5110  {
5111  if (image->alpha_trait == UndefinedPixelTrait)
5112  (void) SetImageAlphaChannel(image,OpaqueAlphaChannel,exception);
5113  switch (primitive_info->method)
5114  {
5115  case PointMethod:
5116  default:
5117  {
5118  PixelInfo
5119  pixel;
5120 
5121  register Quantum
5122  *q;
5123 
5124  q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5125  if (q == (Quantum *) NULL)
5126  break;
5127  GetFillColor(draw_info,x,y,&pixel,exception);
5128  SetPixelAlpha(image,ClampToQuantum(pixel.alpha),q);
5129  (void) SyncCacheViewAuthenticPixels(image_view,exception);
5130  break;
5131  }
5132  case ReplaceMethod:
5133  {
5135  sync;
5136 
5137  PixelInfo
5138  pixel,
5139  target;
5140 
5141  (void) GetOneCacheViewVirtualPixelInfo(image_view,x,y,&target,
5142  exception);
5143  GetPixelInfo(image,&pixel);
5144  for (y=0; y < (ssize_t) image->rows; y++)
5145  {
5146  register Quantum
5147  *magick_restrict q;
5148 
5149  q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5150  exception);
5151  if (q == (Quantum *) NULL)
5152  break;
5153  for (x=0; x < (ssize_t) image->columns; x++)
5154  {
5155  GetPixelInfoPixel(image,q,&pixel);
5156  if (IsFuzzyEquivalencePixelInfo(&pixel,&target) == MagickFalse)
5157  {
5158  q+=GetPixelChannels(image);
5159  continue;
5160  }
5161  GetFillColor(draw_info,x,y,&pixel,exception);
5162  SetPixelAlpha(image,ClampToQuantum(pixel.alpha),q);
5163  q+=GetPixelChannels(image);
5164  }
5165  sync=SyncCacheViewAuthenticPixels(image_view,exception);
5166  if (sync == MagickFalse)
5167  break;
5168  }
5169  break;
5170  }
5171  case FloodfillMethod:
5172  case FillToBorderMethod:
5173  {
5174  ChannelType
5175  channel_mask;
5176 
5177  PixelInfo
5178  target;
5179 
5181  &target,exception);
5182  if (primitive_info->method == FillToBorderMethod)
5183  {
5184  target.red=(double) draw_info->border_color.red;
5185  target.green=(double) draw_info->border_color.green;
5186  target.blue=(double) draw_info->border_color.blue;
5187  }
5188  channel_mask=SetImageChannelMask(image,AlphaChannel);
5189  status&=FloodfillPaintImage(image,draw_info,&target,x,y,
5190  primitive_info->method == FloodfillMethod ? MagickFalse :
5191  MagickTrue,exception);
5192  (void) SetImageChannelMask(image,channel_mask);
5193  break;
5194  }
5195  case ResetMethod:
5196  {
5198  sync;
5199 
5200  PixelInfo
5201  pixel;
5202 
5203  for (y=0; y < (ssize_t) image->rows; y++)
5204  {
5205  register Quantum
5206  *magick_restrict q;
5207 
5208  q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5209  exception);
5210  if (q == (Quantum *) NULL)
5211  break;
5212  for (x=0; x < (ssize_t) image->columns; x++)
5213  {
5214  GetFillColor(draw_info,x,y,&pixel,exception);
5215  SetPixelAlpha(image,ClampToQuantum(pixel.alpha),q);
5216  q+=GetPixelChannels(image);
5217  }
5218  sync=SyncCacheViewAuthenticPixels(image_view,exception);
5219  if (sync == MagickFalse)
5220  break;
5221  }
5222  break;
5223  }
5224  }
5225  break;
5226  }
5227  case ColorPrimitive:
5228  {
5229  switch (primitive_info->method)
5230  {
5231  case PointMethod:
5232  default:
5233  {
5234  PixelInfo
5235  pixel;
5236 
5237  register Quantum
5238  *q;
5239 
5240  q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5241  if (q == (Quantum *) NULL)
5242  break;
5243  GetPixelInfo(image,&pixel);
5244  GetFillColor(draw_info,x,y,&pixel,exception);
5245  SetPixelViaPixelInfo(image,&pixel,q);
5246  (void) SyncCacheViewAuthenticPixels(image_view,exception);
5247  break;
5248  }
5249  case ReplaceMethod:
5250  {
5252  sync;
5253 
5254  PixelInfo
5255  pixel,
5256  target;
5257 
5258  (void) GetOneCacheViewVirtualPixelInfo(image_view,x,y,&target,
5259  exception);
5260  for (y=0; y < (ssize_t) image->rows; y++)
5261  {
5262  register Quantum
5263  *magick_restrict q;
5264 
5265  q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5266  exception);
5267  if (q == (Quantum *) NULL)
5268  break;
5269  for (x=0; x < (ssize_t) image->columns; x++)
5270  {
5271  GetPixelInfoPixel(image,q,&pixel);
5272  if (IsFuzzyEquivalencePixelInfo(&pixel,&target) == MagickFalse)
5273  {
5274  q+=GetPixelChannels(image);
5275  continue;
5276  }
5277  GetFillColor(draw_info,x,y,&pixel,exception);
5278  SetPixelViaPixelInfo(image,&pixel,q);
5279  q+=GetPixelChannels(image);
5280  }
5281  sync=SyncCacheViewAuthenticPixels(image_view,exception);
5282  if (sync == MagickFalse)
5283  break;
5284  }
5285  break;
5286  }
5287  case FloodfillMethod:
5288  case FillToBorderMethod:
5289  {
5290  PixelInfo
5291  target;
5292 
5294  &target,exception);
5295  if (primitive_info->method == FillToBorderMethod)
5296  {
5297  target.red=(double) draw_info->border_color.red;
5298  target.green=(double) draw_info->border_color.green;
5299  target.blue=(double) draw_info->border_color.blue;
5300  }
5301  status&=FloodfillPaintImage(image,draw_info,&target,x,y,
5302  primitive_info->method == FloodfillMethod ? MagickFalse :
5303  MagickTrue,exception);
5304  break;
5305  }
5306  case ResetMethod:
5307  {
5309  sync;
5310 
5311  PixelInfo
5312  pixel;
5313 
5314  GetPixelInfo(image,&pixel);
5315  for (y=0; y < (ssize_t) image->rows; y++)
5316  {
5317  register Quantum
5318  *magick_restrict q;
5319 
5320  q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5321  exception);
5322  if (q == (Quantum *) NULL)
5323  break;
5324  for (x=0; x < (ssize_t) image->columns; x++)
5325  {
5326  GetFillColor(draw_info,x,y,&pixel,exception);
5327  SetPixelViaPixelInfo(image,&pixel,q);
5328  q+=GetPixelChannels(image);
5329  }
5330  sync=SyncCacheViewAuthenticPixels(image_view,exception);
5331  if (sync == MagickFalse)
5332  break;
5333  }
5334  break;
5335  }
5336  }
5337  break;
5338  }
5339  case ImagePrimitive:
5340  {
5341  AffineMatrix
5342  affine;
5343 
5344  char
5345  composite_geometry[MagickPathExtent];
5346 
5347  Image
5348  *composite_image,
5349  *composite_images;
5350 
5351  ImageInfo
5352  *clone_info;
5353 
5355  geometry;
5356 
5357  ssize_t
5358  x1,
5359  y1;
5360 
5361  if (primitive_info->text == (char *) NULL)
5362  break;
5363  clone_info=AcquireImageInfo();
5364  if (LocaleNCompare(primitive_info->text,"data:",5) == 0)
5365  composite_images=ReadInlineImage(clone_info,primitive_info->text,
5366  exception);
5367  else
5368  {
5369  (void) CopyMagickString(clone_info->filename,primitive_info->text,
5371  composite_images=ReadImage(clone_info,exception);
5372  }
5373  clone_info=DestroyImageInfo(clone_info);
5374  if (composite_images == (Image *) NULL)
5375  {
5376  status=0;
5377  break;
5378  }
5379  composite_image=RemoveFirstImageFromList(&composite_images);
5380  composite_images=DestroyImageList(composite_images);
5381  (void) SetImageProgressMonitor(composite_image,(MagickProgressMonitor)
5382  NULL,(void *) NULL);
5383  x1=(ssize_t) ceil(primitive_info[1].point.x-0.5);
5384  y1=(ssize_t) ceil(primitive_info[1].point.y-0.5);
5385  if (((x1 != 0L) && (x1 != (ssize_t) composite_image->columns)) ||
5386  ((y1 != 0L) && (y1 != (ssize_t) composite_image->rows)))
5387  {
5388  /*
5389  Resize image.
5390  */
5391  (void) FormatLocaleString(composite_geometry,MagickPathExtent,
5392  "%gx%g!",primitive_info[1].point.x,primitive_info[1].point.y);
5393  composite_image->filter=image->filter;
5394  (void) TransformImage(&composite_image,(char *) NULL,
5395  composite_geometry,exception);
5396  }
5397  if (composite_image->alpha_trait == UndefinedPixelTrait)
5398  (void) SetImageAlphaChannel(composite_image,OpaqueAlphaChannel,
5399  exception);
5400  if (draw_info->alpha != OpaqueAlpha)
5401  (void) SetImageAlpha(composite_image,draw_info->alpha,exception);
5402  SetGeometry(image,&geometry);
5403  image->gravity=draw_info->gravity;
5404  geometry.x=x;
5405  geometry.y=y;
5406  (void) FormatLocaleString(composite_geometry,MagickPathExtent,
5407  "%.20gx%.20g%+.20g%+.20g",(double) composite_image->columns,(double)
5408  composite_image->rows,(double) geometry.x,(double) geometry.y);
5409  (void) ParseGravityGeometry(image,composite_geometry,&geometry,exception);
5410  affine=draw_info->affine;
5411  affine.tx=(double) geometry.x;
5412  affine.ty=(double) geometry.y;
5413  composite_image->interpolate=image->interpolate;
5414  status&=DrawAffineImage(image,composite_image,&affine,exception);
5415  composite_image=DestroyImage(composite_image);
5416  break;
5417  }
5418  case PointPrimitive:
5419  {
5420  PixelInfo
5421  fill_color;
5422 
5423  register Quantum
5424  *q;
5425 
5426  if ((y < 0) || (y >= (ssize_t) image->rows))
5427  break;
5428  if ((x < 0) || (x >= (ssize_t) image->columns))
5429  break;
5430  q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5431  if (q == (Quantum *) NULL)
5432  break;
5433  GetFillColor(draw_info,x,y,&fill_color,exception);
5434  CompositePixelOver(image,&fill_color,(double) fill_color.alpha,q,
5435  (double) GetPixelAlpha(image,q),q);
5436  (void) SyncCacheViewAuthenticPixels(image_view,exception);
5437  break;
5438  }
5439  case TextPrimitive:
5440  {
5441  char
5442  geometry[MagickPathExtent];
5443 
5444  DrawInfo
5445  *clone_info;
5446 
5447  if (primitive_info->text == (char *) NULL)
5448  break;
5449  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5450  (void) CloneString(&clone_info->text,primitive_info->text);
5451  (void) FormatLocaleString(geometry,MagickPathExtent,"%+f%+f",
5452  primitive_info->point.x,primitive_info->point.y);
5453  (void) CloneString(&clone_info->geometry,geometry);
5454  status&=AnnotateImage(image,clone_info,exception);
5455  clone_info=DestroyDrawInfo(clone_info);
5456  break;
5457  }
5458  default:
5459  {
5460  double
5461  mid,
5462  scale;
5463 
5464  DrawInfo
5465  *clone_info;
5466 
5467  if (IsEventLogging() != MagickFalse)
5468  LogPrimitiveInfo(primitive_info);
5469  scale=ExpandAffine(&draw_info->affine);
5470  if ((draw_info->dash_pattern != (double *) NULL) &&
5471  (fabs(draw_info->dash_pattern[0]) >= MagickEpsilon) &&
5472  (fabs(scale*draw_info->stroke_width) >= MagickEpsilon) &&
5473  (draw_info->stroke.alpha != (Quantum) TransparentAlpha))
5474  {
5475  /*
5476  Draw dash polygon.
5477  */
5478  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5479  clone_info->stroke_width=0.0;
5481  status&=DrawPolygonPrimitive(image,clone_info,primitive_info,
5482  exception);
5483  clone_info=DestroyDrawInfo(clone_info);
5484  status=DrawDashPolygon(draw_info,primitive_info,image,exception);
5485  break;
5486  }
5487  mid=ExpandAffine(&draw_info->affine)*SaneStrokeWidth(image,draw_info)/2.0;
5488  if ((mid > 1.0) &&
5489  ((draw_info->stroke.alpha != (Quantum) TransparentAlpha) ||
5490  (draw_info->stroke_pattern != (Image *) NULL)))
5491  {
5492