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167 <p class="navigation-index">[<a href="#CloneWandView">CloneWandView</a> • <a href="#DestroyWandView">DestroyWandView</a> • <a href="#DuplexTransferWandViewIterator">DuplexTransferWandViewIterator</a> • <a href="#GetWandViewException">GetWandViewException</a> • <a href="#GetWandViewExtent">GetWandViewExtent</a> • <a href="#GetWandViewIterator">GetWandViewIterator</a> • <a href="#GetWandViewPixels">GetWandViewPixels</a> • <a href="#GetWandViewWand">GetWandViewWand</a> • <a href="#IsWandView">IsWandView</a> • <a href="#NewWandView">NewWandView</a> • <a href="#NewWandViewExtent">NewWandViewExtent</a> • <a href="#SetWandViewDescription">SetWandViewDescription</a> • <a href="#SetWandViewIterator">SetWandViewIterator</a> • <a href="#TransferWandViewIterator">TransferWandViewIterator</a> • <a href="#UpdateWandViewIterator">UpdateWandViewIterator</a>]</p>
169 <h2><a href="http://www.imagemagick.org/api/MagickWand/wand-view
170 _8c.html" target="source" name="CloneWandView">CloneWandView</a></h2>
171 <div class="doc-section">
173 <p>CloneWandView() makes a copy of the specified wand view.</p></ol>
175 <p>The format of the CloneWandView method is:</p>
178 WandView *CloneWandView(const WandView *wand_view)
181 <p>A description of each parameter follows:</p></ol>
184 <ol><p>the wand view.</p></ol>
187 <h2><a href="http://www.imagemagick.org/api/MagickWand/wand-view
188 _8c.html" target="source" name="DestroyWandView">DestroyWandView</a></h2>
189 <div class="doc-section">
191 <p>DestroyWandView() deallocates memory associated with a wand view.</p></ol>
193 <p>The format of the DestroyWandView method is:</p>
196 WandView *DestroyWandView(WandView *wand_view)
199 <p>A description of each parameter follows:</p></ol>
202 <ol><p>the wand view.</p></ol>
205 <h2><a href="http://www.imagemagick.org/api/MagickWand/wand-view
206 _8c.html" target="source" name="DuplexTransferWandViewIterator">DuplexTransferWandViewIterator</a></h2>
207 <div class="doc-section">
209 <p>DuplexTransferWandViewIterator() iterates over three wand views in parallel and calls your transfer method for each scanline of the view. The source and duplex pixel extent is not confined to the image canvas-- that is you can include negative offsets or widths or heights that exceed the image dimension. However, the destination wand view is confined to the image canvas-- that is no negative offsets or widths or heights that exceed the image dimension are permitted.</p></ol>
211 <p>The callback signature is:</p>
214 MagickBooleanType DuplexTransferImageViewMethod(const WandView *source,
215 const WandView *duplex,WandView *destination,const ssize_t y,
216 const int thread_id,void *context)
219 <p>Use this pragma if the view is not single threaded:</p>
225 <p>to define a section of code in your callback transfer method that must be executed by a single thread at a time.</p></ol>
227 <p>The format of the DuplexTransferWandViewIterator method is:</p>
230 MagickBooleanType DuplexTransferWandViewIterator(WandView *source,
231 WandView *duplex,WandView *destination,
232 DuplexTransferWandViewMethod transfer,void *context)
235 <p>A description of each parameter follows:</p></ol>
238 <ol><p>the source wand view.</p></ol>
241 <ol><p>the duplex wand view.</p></ol>
244 <ol><p>the destination wand view.</p></ol>
247 <ol><p>the transfer callback method.</p></ol>
250 <ol><p>the user defined context.</p></ol>
253 <h2><a href="http://www.imagemagick.org/api/MagickWand/wand-view
254 _8c.html" target="source" name="GetWandViewException">GetWandViewException</a></h2>
255 <div class="doc-section">
257 <p>GetWandViewException() returns the severity, reason, and description of any error that occurs when utilizing a wand view.</p></ol>
259 <p>The format of the GetWandViewException method is:</p>
262 char *GetWandViewException(const PixelWand *wand_view,
263 ExceptionType *severity)
266 <p>A description of each parameter follows:</p></ol>
269 <ol><p>the pixel wand_view.</p></ol>
272 <ol><p>the severity of the error is returned here.</p></ol>
275 <h2><a href="http://www.imagemagick.org/api/MagickWand/wand-view
276 _8c.html" target="source" name="GetWandViewExtent">GetWandViewExtent</a></h2>
277 <div class="doc-section">
279 <p>GetWandViewExtent() returns the wand view extent.</p></ol>
281 <p>The format of the GetWandViewExtent method is:</p>
284 RectangleInfo GetWandViewExtent(const WandView *wand_view)
287 <p>A description of each parameter follows:</p></ol>
290 <ol><p>the wand view.</p></ol>
293 <h2><a href="http://www.imagemagick.org/api/MagickWand/wand-view
294 _8c.html" target="source" name="GetWandViewIterator">GetWandViewIterator</a></h2>
295 <div class="doc-section">
297 <p>GetWandViewIterator() iterates over the wand view in parallel and calls your get method for each scanline of the view. The pixel extent is not confined to the image canvas-- that is you can include negative offsets or widths or heights that exceed the image dimension. Any updates to the pixels in your callback are ignored.</p></ol>
299 <p>The callback signature is:</p>
302 MagickBooleanType GetImageViewMethod(const WandView *source,
303 const ssize_t y,const int thread_id,void *context)
306 <p>Use this pragma if the view is not single threaded:</p>
312 <p>to define a section of code in your callback get method that must be executed by a single thread at a time.</p></ol>
314 <p>The format of the GetWandViewIterator method is:</p>
317 MagickBooleanType GetWandViewIterator(WandView *source,
318 GetWandViewMethod get,void *context)
321 <p>A description of each parameter follows:</p></ol>
324 <ol><p>the source wand view.</p></ol>
327 <ol><p>the get callback method.</p></ol>
330 <ol><p>the user defined context.</p></ol>
333 <h2><a href="http://www.imagemagick.org/api/MagickWand/wand-view
334 _8c.html" target="source" name="GetWandViewPixels">GetWandViewPixels</a></h2>
335 <div class="doc-section">
337 <p>GetWandViewPixels() returns the wand view pixel_wands.</p></ol>
339 <p>The format of the GetWandViewPixels method is:</p>
342 PixelWand *GetWandViewPixels(const WandView *wand_view)
345 <p>A description of each parameter follows:</p></ol>
348 <ol><p>the wand view.</p></ol>
351 <h2><a href="http://www.imagemagick.org/api/MagickWand/wand-view
352 _8c.html" target="source" name="GetWandViewWand">GetWandViewWand</a></h2>
353 <div class="doc-section">
355 <p>GetWandViewWand() returns the magick wand associated with the wand view.</p></ol>
357 <p>The format of the GetWandViewWand method is:</p>
360 MagickWand *GetWandViewWand(const WandView *wand_view)
363 <p>A description of each parameter follows:</p></ol>
366 <ol><p>the wand view.</p></ol>
369 <h2><a href="http://www.imagemagick.org/api/MagickWand/wand-view
370 _8c.html" target="source" name="IsWandView">IsWandView</a></h2>
371 <div class="doc-section">
373 <p>IsWandView() returns MagickTrue if the the parameter is verified as a wand view object.</p></ol>
375 <p>The format of the IsWandView method is:</p>
378 MagickBooleanType IsWandView(const WandView *wand_view)
381 <p>A description of each parameter follows:</p></ol>
384 <ol><p>the wand view.</p></ol>
387 <h2><a href="http://www.imagemagick.org/api/MagickWand/wand-view
388 _8c.html" target="source" name="NewWandView">NewWandView</a></h2>
389 <div class="doc-section">
391 <p>NewWandView() returns a wand view required for all other methods in the Wand View API.</p></ol>
393 <p>The format of the NewWandView method is:</p>
396 WandView *NewWandView(MagickWand *wand)
399 <p>A description of each parameter follows:</p></ol>
402 <ol><p>the wand.</p></ol>
405 <h2><a href="http://www.imagemagick.org/api/MagickWand/wand-view
406 _8c.html" target="source" name="NewWandViewExtent">NewWandViewExtent</a></h2>
407 <div class="doc-section">
409 <p>NewWandViewExtent() returns a wand view required for all other methods in the Wand View API.</p></ol>
411 <p>The format of the NewWandViewExtent method is:</p>
414 WandView *NewWandViewExtent(MagickWand *wand,const ssize_t x,
415 const ssize_t y,const size_t width,const size_t height)
418 <p>A description of each parameter follows:</p></ol>
421 <ol><p>the magick wand.</p></ol>
423 <h5>x,y,columns,rows</h5>
424 <ol><p>These values define the perimeter of a extent of pixel_wands view.</p></ol>
427 <h2><a href="http://www.imagemagick.org/api/MagickWand/wand-view
428 _8c.html" target="source" name="SetWandViewDescription">SetWandViewDescription</a></h2>
429 <div class="doc-section">
431 <p>SetWandViewDescription() associates a description with an image view.</p></ol>
433 <p>The format of the SetWandViewDescription method is:</p>
436 void SetWandViewDescription(WandView *image_view,const char *description)
439 <p>A description of each parameter follows:</p></ol>
442 <ol><p>the wand view.</p></ol>
445 <ol><p>the wand view description.</p></ol>
448 <h2><a href="http://www.imagemagick.org/api/MagickWand/wand-view
449 _8c.html" target="source" name="SetWandViewIterator">SetWandViewIterator</a></h2>
450 <div class="doc-section">
452 <p>SetWandViewIterator() iterates over the wand view in parallel and calls your set method for each scanline of the view. The pixel extent is confined to the image canvas-- that is no negative offsets or widths or heights that exceed the image dimension. The pixels are initiallly undefined and any settings you make in the callback method are automagically synced back to your image.</p></ol>
454 <p>The callback signature is:</p>
457 MagickBooleanType SetImageViewMethod(ImageView *destination,
458 const ssize_t y,const int thread_id,void *context)
461 <p>Use this pragma if the view is not single threaded:</p>
467 <p>to define a section of code in your callback set method that must be executed by a single thread at a time.</p></ol>
469 <p>The format of the SetWandViewIterator method is:</p>
472 MagickBooleanType SetWandViewIterator(WandView *destination,
473 SetWandViewMethod set,void *context)
476 <p>A description of each parameter follows:</p></ol>
479 <ol><p>the wand view.</p></ol>
482 <ol><p>the set callback method.</p></ol>
485 <ol><p>the user defined context.</p></ol>
488 <h2><a href="http://www.imagemagick.org/api/MagickWand/wand-view
489 _8c.html" target="source" name="TransferWandViewIterator">TransferWandViewIterator</a></h2>
490 <div class="doc-section">
492 <p>TransferWandViewIterator() iterates over two wand views in parallel and calls your transfer method for each scanline of the view. The source pixel extent is not confined to the image canvas-- that is you can include negative offsets or widths or heights that exceed the image dimension. However, the destination wand view is confined to the image canvas-- that is no negative offsets or widths or heights that exceed the image dimension are permitted.</p></ol>
494 <p>The callback signature is:</p>
497 MagickBooleanType TransferImageViewMethod(const WandView *source,
498 WandView *destination,const ssize_t y,const int thread_id,
502 <p>Use this pragma if the view is not single threaded:</p>
508 <p>to define a section of code in your callback transfer method that must be executed by a single thread at a time.</p></ol>
510 <p>The format of the TransferWandViewIterator method is:</p>
513 MagickBooleanType TransferWandViewIterator(WandView *source,
514 WandView *destination,TransferWandViewMethod transfer,void *context)
517 <p>A description of each parameter follows:</p></ol>
520 <ol><p>the source wand view.</p></ol>
523 <ol><p>the destination wand view.</p></ol>
526 <ol><p>the transfer callback method.</p></ol>
529 <ol><p>the user defined context.</p></ol>
532 <h2><a href="http://www.imagemagick.org/api/MagickWand/wand-view
533 _8c.html" target="source" name="UpdateWandViewIterator">UpdateWandViewIterator</a></h2>
534 <div class="doc-section">
536 <p>UpdateWandViewIterator() iterates over the wand view in parallel and calls your update method for each scanline of the view. The pixel extent is confined to the image canvas-- that is no negative offsets or widths or heights that exceed the image dimension are permitted. Updates to pixels in your callback are automagically synced back to the image.</p></ol>
538 <p>The callback signature is:</p>
541 MagickBooleanType UpdateImageViewMethod(WandView *source,const ssize_t y,
542 const int thread_id,void *context)
545 <p>Use this pragma if the view is not single threaded:</p>
551 <p>to define a section of code in your callback update method that must be executed by a single thread at a time.</p></ol>
553 <p>The format of the UpdateWandViewIterator method is:</p>
556 MagickBooleanType UpdateWandViewIterator(WandView *source,
557 UpdateWandViewMethod update,void *context)
560 <p>A description of each parameter follows:</p></ol>
563 <ol><p>the source wand view.</p></ol>
566 <ol><p>the update callback method.</p></ol>
569 <ol><p>the user defined context.</p></ol>
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