The basic operation of the Warp 2D tool involves drawing source and destination shapes and linking pairs of these together. The correspondence between points on the source and destination shapes defines constraints on the transformation of the image.
Another type of shape constraint is a fence shape which functions like a pair of source and destination shapes that are constrained to always be equal, keeping a part of the image from moving from its source position. The resulting transformation tries to make a deformation of 2D space that warps the image to satisfy the specified shape positions, while automatically repositioning the unconstrained parts of the image to make the overall warping as smooth as possible.
The types of shapes supported include those in the Garbage Mask and Remove Dust tool: Splines (open or closed), Rectangles, and Ellipses.
After drawing the shapes which define the transformation, you can set or animate an interpolation parameter which controls the amount of warping.To create a static warp of an image you will just set this to 1.Sometimes you may want the image to smoothly change from its original shape to a warped shape and will animate the interpolation parameter from 0 to 1.There is also a control to use a per-shape interpolation amount to have various features deform at different times.
