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9d93e250d1
Previously the clip stack code was trying to detect when the orientation of the on-screen rectangle had changed by checking if the order of the y-coordinates on the left edge was different from the order the x-coordinates on the top edge. This doesn't work for some rotations which was causing the clip planes to clip the wrong side of the line. This patch makes it detect the orientation by calculating the signed area which is a standard computer graphics algorithm. http://bugzilla.openedhand.com/show_bug.cgi?id=2079 |
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