id summary reporter owner description type status priority milestone component version severity resolution keywords cc 569 Exception when buffer a small-angle polygon 55 strk "I use this points as polygon coordinates: X Y 0 0/ 50 100/ 30 130/ 124 290/ 82 144/ 129 289/ 120 140/ 170 135/ 0 0/ then: geos::geom::Polygon* poly; poly->buffer( 25 ); // throws util::TopologyException finally, i find the reason: default quadrantSegments is 8,so i try ""poly->buffer( 25, 6 )"" instead,everything is OK; " defect closed major 3.3.9 Core 3.3.3 Unassigned fixed Buffer