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IDProjectCategoryView StatusDate SubmittedLast Update
0029431Open CASCADE[OCCT] OCCT:Modeling Algorithmspublic2018-01-17 15:402018-01-17 15:43
Reporteremv 
Assigned Tomsv 
PrioritynormalSeverityminor 
StatusnewResolutionopen 
PlatformOSOS Version
Product Version[OCCT] 7.2.0 
Target Version[OCCT] 7.4.0*Fixed in Version 
Summary0029431: "checkshape" for a single face depends on the orientation of the face
Description"checkshape" command does not reports invalidity for the attached face. Changing orientation of the face to Forward, allows "checkshape" recognizing the face as invalid.
Such behavior is explained by the fact that BRepTools_WireExplorer (used in BRepCheck_Analyzer) depends on face's orientation. For a Reversed face it returns 6 edges, but for a Forward face it returns only 4.

The problem has been detected in the test case "chamfer dist_angle_sequence B5".
Steps To Reproduce# test chamfer dist_angle_sequence B5 1
# explode result f; copy result_1 f

binrestore [locate_data_file bug29431_f.bin] f
don f
whatis f
# FACE REVERSED
checkshape f
# OK
explode f
expwire f_1 f
# BRepTools_WireExplorer donne 6 Edges


orientation f F
whatis f
# FACE FORWARD
checkshape f
# faulty
explode f
expwire f_1 f
# BRepTools_WireExplorer donne 4 Edges
TagsNo tags attached.
Test case number
Attached Files? file icon bug29431_f.bin (35,263 bytes) 2018-01-17 15:41

- Relationships
related to 0022909assignedmsv Chamfers are made with errors on chamfer test. 

-  Notes
There are no notes attached to this issue.

- Issue History
Date Modified Username Field Change
2018-01-17 15:40 emv New Issue
2018-01-17 15:40 emv Assigned To => msv
2018-01-17 15:41 emv File Added: bug29431_f.bin
2018-01-17 15:42 emv Steps to Reproduce Updated View Revisions
2018-01-17 15:43 emv Relationship added related to 0022909


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