The Distortion effects are used to distort, transform or convolute an active layer or selection. You can apply these effects: Displace, Extrude, Pinch, Polar Coordinates, Ripple, Twirl.


Displace. The effect shifts the current layer based on the image selected as a displacement map. The resulting image is covered with a pattern which depends on the form of the map.


Extrude. The effect gives the picture a three-dimensional structure. The image is composed of the square blocks protruding from its center.


Pinch. The effect stretches or shrinks the image. There are two types of compression:


Polar Coordinates. The effect distorts the image by converting the rectangular coordinates of each point to polar ones (and vice versa).


Ripple. The effect distorts the image by adding the perturbations in the form of small waves.


Twirl. The effect twists the edges of the image around its center.

If the Fixed Preview Area check-box is enabled, all changes will be displayed in a small preview area. If the check-box is disabled, the changes will be applied to the area visible in the Image Window.

Click OK to apply the changes to the image and close the effect dialog box.

Click Cancel to close the dialog box without applying changes.