id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
9081,boost geometry booleans create self-intersecting polygons from non-self-intersecting polygons,snubdodecahedron@…,Barend Gehrels,"The attached program mimics aspects of the way in which I am trying to use the boost geometry polygon boolean operations.  It repeatedly selects two polygons from a list, computes the booleans, and adds the results to the list.  It also checks the results for self-intersection and reports the input and operation that lead to the failure before exiting.  When I run it as is I get this result:

FAILED TO SUBTRACT
MULTIPOLYGON(((0.2654871893371946 0.2880663823207319,0.349204346823061 0.3819520178855695,0.4615617830267027 0.4487295340751242,0.2851297065819251 0.2894032238012155,0.2654871893371946 0.2880663823207319)))
MULTIPOLYGON(((0.4615617830267023 0.4487295340751238,0.4809248136210044 0.4662152446243423,0.4861159661340977 0.46332284819279,0.4615617830267023 0.4487295340751238)))
MULTIPOLYGON(((0.4615617830267027 0.4487295340751242,0.4615617830267023 0.4487295340751238,0.2851297065819251 0.2894032238012155,0.2654871893371946 0.2880663823207319,0.349204346823061 0.3819520178855695,0.4615617830267023 0.4487295340751238,0.4615617830267027 0.4487295340751242)))

Expected result: the program completes without finding a self-intersection.

Boost SVN revision: 85565.
",Bugs,reopened,Boost 1.56.0,geometry,Boost Development Trunk,Problem,,boost geometry booleans self-intersecting polygon,