[cairo] Solving the self-intersecting stroke

Chris Wilson chris at chris-wilson.co.uk
Thu Oct 2 02:25:32 PDT 2008

Carl, I've slept on it and acting upon Joonas's hint that we may have
been performing the wrong operation in edge_x_for_y(), I've rewritten
the comparison to perform the test directly upon the edge equations
which simplifies the code greatly.
Chris Wilson
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