[cairo] Rotating Pattern Images

cecashon at aol.com cecashon at aol.com
Fri Nov 13 13:36:34 UTC 2020

The trick to rotating pattern images is to keep the z direction positive. This solves the no memory problem for a valid rotation matrix with a pattern. For no memory with the translation beyond the 2 byte max this can be checked also on the user side of the library.

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