Question

Are there any classes, methods in the .NET library, or any algorithms in general, to perform non-affine transformations? (i.e. transformations that involve more than just rotation, scale, translation and shear)

e.g.:

_{(source: last100.com)}

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Is there another term for non-affine transformations?

Answer 1

All of the example images you posted can be done with a Quadrilateral Distortion. Though I cant say for certain that a quad distort will cover ALL non affine transforms.

Heres a link to a not so good implementation of it in C#… it works, but is slow. Poke around Wikipedia for the many different optimizations available for these kinds of calculations

http://www.vcskicks.com/image-distortion.html

-Neil