About Warps |
Transformations work on entire images, so that each pixel in the image is moved, rotated, or scaled the same amount. These are all called Linear Transformations. Even CornerPin applies the same transformation to every pixel, that is, they are all effected by the manipulation of the four corners. Warps differ from Transformations in that each pixel is considered an individual case, with the ability to be moved completely independently of its neighbor. For this reason, warps are sometimes called Nonlinear Transformations. Warps are good for making rippling patterns, randomizing images, and other effects. You can also input an arbitrary expression with the WarpX command, which is similar to the ColorX command, except it does warping instead of color changes.