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170 <p class="navigation-index">[<a href="#ChopImage">ChopImage</a> • <a href="#CropImage">CropImage</a> • <a href="#ExcerptImage">ExcerptImage</a> • <a href="#ExtentImage">ExtentImage</a> • <a href="#FlipImage">FlipImage</a> • <a href="#FlopImage">FlopImage</a> • <a href="#RollImage">RollImage</a> • <a href="#ShaveImage">ShaveImage</a> • <a href="#SpliceImage">SpliceImage</a> • <a href="#TransformImage">TransformImage</a> • <a href="#TransformImages">TransformImages</a> • <a href="#TransposeImage">TransposeImage</a> • <a href="#TransverseImage">TransverseImage</a> • <a href="#TrimImage">TrimImage</a>]</p>
172 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform
173 _8c.html" target="source" name="ChopImage">ChopImage</a></h2>
174 <div class="doc-section">
176 <p>ChopImage() removes a region of an image and collapses the image to occupy the removed portion.</p></ol>
178 <p>The format of the ChopImage method is:</p>
181 Image *ChopImage(const Image *image,const RectangleInfo *chop_info)
182 ExceptionInfo *exception)
185 <p>A description of each parameter follows:</p></ol>
188 <ol><p>the image.</p></ol>
191 <ol><p>Define the region of the image to chop.</p></ol>
194 <ol><p>return any errors or warnings in this structure.</p></ol>
197 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform
198 _8c.html" target="source" name="CropImage">CropImage</a></h2>
199 <div class="doc-section">
201 <p>CropImage() extracts a region of the image starting at the offset defined by geometry.</p></ol>
203 <p>The format of the CropImage method is:</p>
206 Image *CropImage(const Image *image,const RectangleInfo *geometry,
207 ExceptionInfo *exception)
210 <p>A description of each parameter follows:</p></ol>
213 <ol><p>the image.</p></ol>
216 <ol><p>Define the region of the image to crop with members x, y, width, and height.</p></ol>
219 <ol><p>return any errors or warnings in this structure.</p></ol>
222 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform
223 _8c.html" target="source" name="ExcerptImage">ExcerptImage</a></h2>
224 <div class="doc-section">
226 <p>ExcerptImage() returns a excerpt of the image as defined by the geometry.</p></ol>
228 <p>The format of the ExcerptImage method is:</p>
231 Image *ExcerptImage(const Image *image,const RectangleInfo *geometry,
232 ExceptionInfo *exception)
235 <p>A description of each parameter follows:</p></ol>
238 <ol><p>the image.</p></ol>
241 <ol><p>Define the region of the image to extend with members x, y, width, and height.</p></ol>
244 <ol><p>return any errors or warnings in this structure.</p></ol>
247 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform
248 _8c.html" target="source" name="ExtentImage">ExtentImage</a></h2>
249 <div class="doc-section">
251 <p>ExtentImage() extends the image as defined by the geometry, gravity, and image background color. Set the (x,y) offset of the geometry to move the original image relative to the extended image.</p></ol>
253 <p>The format of the ExtentImage method is:</p>
256 Image *ExtentImage(const Image *image,const RectangleInfo *geometry,
257 ExceptionInfo *exception)
260 <p>A description of each parameter follows:</p></ol>
263 <ol><p>the image.</p></ol>
266 <ol><p>Define the region of the image to extend with members x, y, width, and height.</p></ol>
269 <ol><p>return any errors or warnings in this structure.</p></ol>
272 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform
273 _8c.html" target="source" name="FlipImage">FlipImage</a></h2>
274 <div class="doc-section">
276 <p>FlipImage() creates a vertical mirror image by reflecting the pixels around the central x-axis.</p></ol>
278 <p>The format of the FlipImage method is:</p>
281 Image *FlipImage(const Image *image,ExceptionInfo *exception)
284 <p>A description of each parameter follows:</p></ol>
287 <ol><p>the image.</p></ol>
290 <ol><p>return any errors or warnings in this structure.</p></ol>
293 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform
294 _8c.html" target="source" name="FlopImage">FlopImage</a></h2>
295 <div class="doc-section">
297 <p>FlopImage() creates a horizontal mirror image by reflecting the pixels around the central y-axis.</p></ol>
299 <p>The format of the FlopImage method is:</p>
302 Image *FlopImage(const Image *image,ExceptionInfo *exception)
305 <p>A description of each parameter follows:</p></ol>
308 <ol><p>the image.</p></ol>
311 <ol><p>return any errors or warnings in this structure.</p></ol>
314 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform
315 _8c.html" target="source" name="RollImage">RollImage</a></h2>
316 <div class="doc-section">
318 <p>RollImage() offsets an image as defined by x_offset and y_offset.</p></ol>
320 <p>The format of the RollImage method is:</p>
323 Image *RollImage(const Image *image,const ssize_t x_offset,
324 const ssize_t y_offset,ExceptionInfo *exception)
327 <p>A description of each parameter follows:</p></ol>
330 <ol><p>the image.</p></ol>
333 <ol><p>the number of columns to roll in the horizontal direction.</p></ol>
336 <ol><p>the number of rows to roll in the vertical direction.</p></ol>
339 <ol><p>return any errors or warnings in this structure.</p></ol>
342 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform
343 _8c.html" target="source" name="ShaveImage">ShaveImage</a></h2>
344 <div class="doc-section">
346 <p>ShaveImage() shaves pixels from the image edges. It allocates the memory necessary for the new Image structure and returns a pointer to the new image.</p></ol>
348 <p>The format of the ShaveImage method is:</p>
351 Image *ShaveImage(const Image *image,const RectangleInfo *shave_info,
352 ExceptionInfo *exception)
355 <p>A description of each parameter follows:</p></ol>
358 <ol><p>Method ShaveImage returns a pointer to the shaved image. A null image is returned if there is a memory shortage or if the image width or height is zero.</p></ol>
361 <ol><p>the image.</p></ol>
364 <ol><p>Specifies a pointer to a RectangleInfo which defines the region of the image to crop.</p></ol>
367 <ol><p>return any errors or warnings in this structure.</p></ol>
370 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform
371 _8c.html" target="source" name="SpliceImage">SpliceImage</a></h2>
372 <div class="doc-section">
374 <p>SpliceImage() splices a solid color into the image as defined by the geometry.</p></ol>
376 <p>The format of the SpliceImage method is:</p>
379 Image *SpliceImage(const Image *image,const RectangleInfo *geometry,
380 ExceptionInfo *exception)
383 <p>A description of each parameter follows:</p></ol>
386 <ol><p>the image.</p></ol>
389 <ol><p>Define the region of the image to splice with members x, y, width, and height.</p></ol>
392 <ol><p>return any errors or warnings in this structure.</p></ol>
395 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform
396 _8c.html" target="source" name="TransformImage">TransformImage</a></h2>
397 <div class="doc-section">
399 <p>TransformImage() is a convenience method that behaves like ResizeImage() or CropImage() but accepts scaling and/or cropping information as a region geometry specification. If the operation fails, the original image handle is returned.</p></ol>
401 <p>The format of the TransformImage method is:</p>
404 MagickBooleanType TransformImage(Image **image,const char *crop_geometry,
405 const char *image_geometry)
408 <p>A description of each parameter follows:</p></ol>
411 <ol><p>the image The transformed image is returned as this parameter.</p></ol>
413 <h5>crop_geometry</h5>
414 <ol><p>A crop geometry string. This geometry defines a subregion of the image to crop.</p></ol>
416 <h5>image_geometry</h5>
417 <ol><p>An image geometry string. This geometry defines the final size of the image.</p></ol>
420 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform
421 _8c.html" target="source" name="TransformImages">TransformImages</a></h2>
422 <div class="doc-section">
424 <p>TransformImages() calls TransformImage() on each image of a sequence.</p></ol>
426 <p>The format of the TransformImage method is:</p>
429 MagickBooleanType TransformImages(Image **image,
430 const char *crop_geometry,const char *image_geometry)
433 <p>A description of each parameter follows:</p></ol>
436 <ol><p>the image The transformed image is returned as this parameter.</p></ol>
438 <h5>crop_geometry</h5>
439 <ol><p>A crop geometry string. This geometry defines a subregion of the image to crop.</p></ol>
441 <h5>image_geometry</h5>
442 <ol><p>An image geometry string. This geometry defines the final size of the image.</p></ol>
445 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform
446 _8c.html" target="source" name="TransposeImage">TransposeImage</a></h2>
447 <div class="doc-section">
449 <p>TransposeImage() creates a horizontal mirror image by reflecting the pixels around the central y-axis while rotating them by 90 degrees.</p></ol>
451 <p>The format of the TransposeImage method is:</p>
454 Image *TransposeImage(const Image *image,ExceptionInfo *exception)
457 <p>A description of each parameter follows:</p></ol>
460 <ol><p>the image.</p></ol>
463 <ol><p>return any errors or warnings in this structure.</p></ol>
466 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform
467 _8c.html" target="source" name="TransverseImage">TransverseImage</a></h2>
468 <div class="doc-section">
470 <p>TransverseImage() creates a vertical mirror image by reflecting the pixels around the central x-axis while rotating them by 270 degrees.</p></ol>
472 <p>The format of the TransverseImage method is:</p>
475 Image *TransverseImage(const Image *image,ExceptionInfo *exception)
478 <p>A description of each parameter follows:</p></ol>
481 <ol><p>the image.</p></ol>
484 <ol><p>return any errors or warnings in this structure.</p></ol>
487 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform
488 _8c.html" target="source" name="TrimImage">TrimImage</a></h2>
489 <div class="doc-section">
491 <p>TrimImage() trims pixels from the image edges. It allocates the memory necessary for the new Image structure and returns a pointer to the new image.</p></ol>
493 <p>The format of the TrimImage method is:</p>
496 Image *TrimImage(const Image *image,ExceptionInfo *exception)
499 <p>A description of each parameter follows:</p></ol>
502 <ol><p>the image.</p></ol>
505 <ol><p>return any errors or warnings in this structure.</p></ol>
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