07-14-2014
Thank you, migurus, for your reply.
It did speed it up a bit, but I noticed the problem is mainly in the XAllocColor() call. In fact, if I remove that call and always put a black pixel, (still calculating the values), the program runs at less than half a second per rotation.
However I really don't know to get rid of XAllocColor().
I am writing pixels to an XImage. Is there a way to access directly the RGB values of each pixel?
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