On Sun, 2011-05-29 at 11:37 +1000, Russell Shaw wrote: > > Hi, > > In _borast_bentley_ottmann_tessellate_bo_edges() which is from > > _cairo_bentley_ottmann_tessellate_bo_edges(), i see you deleted > > > > case CAIRO_BO_EVENT_TYPE_INTERSECTION: > > > > What effect does this have on the types of polygons that can > > be rasterized? > > Think i know now. Polygons can't have edges that cross other edges. You got it.. PCB doesn't allow self intersecting polygons, so I removed support for rendering them in an attempt to manage the complexity (and hopefully improve speed of) the tessellator. -- Peter Clifton Electrical Engineering Division, Engineering Department, University of Cambridge, 9, JJ Thomson Avenue, Cambridge CB3 0FA Tel: +44 (0)7729 980173 - (No signal in the lab!) Tel: +44 (0)1223 748328 - (Shared lab phone, ask for me)
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