Update

trunk/_vendor/gregwar/image/Gregwar/Image/doc/generate.php

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+<?php
+
+require_once '../autoload.php';
+
+use Gregwar\Image\Image;
+
+// resize() will never enlarge the image
+Image::open('mona.jpg')
+    ->resize(250, 250, 'red')
+    ->save('resize.jpg');
+
+// scaleResize() will also preserve the scale, but won't
+// enlage the image
+Image::open('mona.jpg')
+    ->scaleResize(250, 250, 'red')
+    ->save('scaleResize.jpg');
+
+// forceResize() will resize matching the *exact* given size
+Image::open('mona.jpg')
+    ->forceResize(250, 250)
+    ->save('forceResize.jpg');
+
+// cropResize() preserves scale just like resize() but will
+// trim the whitespace (if any) in the resulting image
+Image::open('mona.jpg')
+    ->cropResize(250, 250)
+    ->save('cropResize.jpg');
+
+// zoomCrop() resizes the image so that a part of it appear in
+// the given area
+Image::open('mona.jpg')
+    ->zoomCrop(200, 200)
+    ->save('zoomCrop.jpg');
+
+// You can specify the position using the xPos and yPos arguments
+Image::open('mona.jpg')
+    ->zoomCrop(200, 200, 'transparent', 'center', 'top')
+    ->save('zoomCropTop.jpg');