I believe that the transformation he wants is not an affine one. The pseudo-3D effect is not the same as skew, and as such I'm not surprised it is not present out of the box. There may have to be some "manual" pixel-mangling, and I think one of the earlier posts explains the formulas behind it. Gimp::Fu may also be useful, as stated earlier.

In reply to Re^2: Module to skew an image by Anonymous Monk
in thread Module to skew an image by japhy

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