hi, dear list !

i'm stuck on this:

i want to translate an image onto a quad-like surface with arbitrary points, just like MAX's [jit.gl.cornerpin] object or the "distort" translation in photoshop.

the only result on my research was to use the [polygon] object instead of [square]. while that comes pretty close to what i am looking for, i can't ssem to make it work without a prespective distortion.

i tried several settings, but didn't really succeed in getting an orthographic distortion without "folding artifacts" (please see attached patch that explains my problem. the simple task is here to create a trapezoid instead of a square - but as i said the points should be freely adjustable with true perspective skew)

please excuse my incredibly limited knowledge on geometrics, my wording is probably totally wrong here

i guess what i'm looking for is something like a 2-dimensional [polygon].

thanks for any hints

best

oliver