Barend Gehrels 575098e9b6 [geometry] Fixed several robustness issues: non-valid polygons/rings are not added anymore; ...

collinear is now symmetric (it could happen that A was collinear w.r.t. B but not vice versa, that is now resolved);
  vertical/horizontal (nearly collinear) segments are now checked later (this and previous bug were found by buffer-high-volume tests).

Added testcases (buffer_rt_f did cause problems with previous implementation, fixed now). Updated testcases (some cases are quite sensitive to implementation while output is still valid)


[SVN r77296]

2012-03-10 19:11:17 +00:00

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