MantisBT - Open CASCADE
View Issue Details
0028800Open CASCADE[OCCT] OCCT:Modeling Algorithmspublic2017-06-01 11:082019-10-25 14:23
[OCCT] 7.1.0 
[OCCT] Unscheduled 
0028800: The compound of two faces is incorrectly detected as self-interfered
The compound of two faces with shared edge is incorrectly detected as self-interfered shape. The checking tool says that the section curve produced between this faces. Actually, this section curve is incorrect because it is located out of the both faces. But this curve is so small (about 3.5e-6) that the classification tool classifies it as ON for both faces.

The problem has been detected during testing of the patch for the issue 0028775 in the test case boolean volumemaker A2. Note, that the whole case works correctly on VC12 but fails on vc10. The attached compound of faces has been saved in vc10 environment. The problem with bopcheck on the attached compound is reproduced on both vc10 and vc12 versions.
restore bug28800_faces.brep cf
bopcheck cf
No tags attached.
related to 0028775closed bugmaster Code duplication removal across the BOPAlgo_PaveFiller algorithm 
related to 0029421feedback msv Make face classifier algorithm stable and robust 
? bug28800_faces.brep (16,722) 2017-06-01 11:10
Issue History
2017-06-01 11:08emvNew Issue
2017-06-01 11:08emvAssigned To => msv
2017-06-01 11:08emvRelationship addedrelated to 0028775
2017-06-01 11:09emvSteps to Reproduce Updatedbug_revision_view_page.php?rev_id=16842#r16842
2017-06-01 11:10emvFile Added: bug28800_faces.brep
2017-06-01 15:41msvAssigned Tomsv => nbv
2017-06-01 15:41msvStatusnew => assigned
2017-06-07 11:25nbvNote Added: 0067173
2017-06-07 11:25nbvStatusassigned => feedback
2017-08-16 07:18emvTarget Version7.2.0 => 7.3.0
2018-03-02 10:58msvTarget Version7.3.0 => 7.4.0
2018-07-09 10:33nbvNote Edited: 0067173bug_revision_view_page.php?bugnote_id=67173#r19441
2018-07-19 15:36nbvRelationship addedrelated to 0029421
2019-08-12 12:43msvAssigned Tonbv =>
2019-08-12 12:43msvTarget Version7.4.0 => Unscheduled
2019-10-25 14:23abvAssigned To => msv

2017-06-07 11:25   
(edited on: 2018-07-09 10:33)
This problem should be fixed in frame of the issue 0029421.