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The function "perspective" looks like a 3*3-matrix with sine och cosines and is it translation, scaling, rotation, some combination or other? How does it work? Is "perspective" the real proper name since it seems more like a rotation combined with a scaling? Thanks for any pointer about the function "perspective" where you can change the perspective of the image so that it looks like it was taken from another angle.

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migrated from stackoverflow.com Oct 20 '11 at 11:28

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Take a look at: http://www.math.ubc.ca/~cass/graphics/manual/pdf/ch10.ps.

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Thank you. The grid helped me understand better. I now wonder what implementations are avilable and will look more. – Nick Rosencrantz Dec 10 '11 at 3:17
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Glad to help! :D In fact transformation matrices are used quite often in both vector and raster graphics software (e.g. wiki.inkscape.org/wiki/index.php/Release_notes/… – there's a tab called "matrix"), but it's not always so explicitly presented. – thebodzio Dec 10 '11 at 11:26

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