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IDProjectCategoryView StatusDate SubmittedLast Update
0029499Open CASCADE[OCCT] OCCT:Modeling Algorithmspublic2018-02-09 16:492018-02-12 10:43
Reporternbv 
Assigned Tomsv 
PrioritynormalSeverityminor 
StatusnewResolutionopen 
PlatformOSOS Version
Product Version 
Target Version[OCCT] 7.4.0*Fixed in Version 
Summary0029499: "sprops" command returns 0 for the face with a gap covered by vertex only (not edge)
DescriptionThere is a rectangular face without one edge. And this gap is covered by the vertex tolerance. See "gapface.PNG" attached picture. This face is topologically closed and valid for OCCT.

However, "sprops" DRAW-command returns 0 as result of its area computation.

P.S.

In fact, this face is based on B-spline surface. If I substitute this surface to planar (see SCRIPT # 2 in Steps To Reproduce) then not-zero area will be computed (result is 0.0763309)
Steps To Reproducerestore [locate_data_file bug29499_bsface.brep] result
checkshape result
# This shape seems to be valid

      SCRIPT # 1

sprops result 1.0e-4
# Mass : 0 ==> WRONG

      SCRIPT # 2

explode result w
plane pl 0 0 4.2 0 0 1 1 0 0
mkface ff pl result_1
checkshape ff
# This shape seems to be valid

sprops ff 1.0e-4
#Mass : 0.0763309
TagsNo tags attached.
Test case number
Attached Filespng file icon gapface.PNG (13,348 bytes) 2018-02-09 16:49
? file icon bug29499_bsface.brep (4,497 bytes) 2018-02-09 16:57

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- Issue History
Date Modified Username Field Change
2018-02-09 16:49 nbv New Issue
2018-02-09 16:49 nbv Assigned To => msv
2018-02-09 16:49 nbv File Added: gapface.PNG
2018-02-09 16:53 nbv File Added: bug29499_bsface.brep
2018-02-09 16:54 nbv File Deleted: bug29499_bsface.brep
2018-02-09 16:57 nbv File Added: bug29499_bsface.brep
2018-02-09 17:03 nbv Description Updated View Revisions
2018-02-09 17:03 nbv Steps to Reproduce Updated View Revisions
2018-02-12 10:43 nbv Relationship added related to 0029494


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