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IDProjectCategoryView StatusDate SubmittedLast Update
0027798Community[OCCT] OCCT:Meshpublic2016-08-22 07:322018-11-07 17:19
ReporterVico Liang 
Assigned ToVico Liang 
PlatformWindowsOSVC++ 2013OS Version64 bit
Product Version 
Target Version[OCCT] 7.4.0*Fixed in Version 
Summary0027798: Bad or degenerated triangles should be avoided (e.g for Cone meshing)
DescriptionOCCT meshing algorithm generates good mesh for most cases. But there are some speical cases which will generate bad triangle with angle near 180 degree or degenerated triangle with two coincident nodes. It can be reproduced with Cone Shape. It will be a big issue if these bad or degenerated triangles serve as input of remesher algorithm or simulation solver. The root cause might be about edge meshing of cone generatrix. The straight edge of cone generatrix will never be divided whatever how long it is. If the straight long edge can be divided as necessary, the bad triange might be avoided.
TagsNo tags attached.
Test case number
Attached Files

- Relationships
duplicate of 0025042verifiedbugmaster Community Cone Meshing: Missing two connecting edges. 

-  Notes
oan (developer)
2018-11-07 17:00

Implemented in context of #28379.

Test case not needed.
msv (developer)
2018-11-07 17:18

The fix for #28379 splits the seam edge of the conical face. It does not deel with degenerated triangles.
msv (developer)
2018-11-07 17:19

Dear Vico, please check the new behavior and tell if it is OK for you now.

- Issue History
Date Modified Username Field Change
2016-08-22 07:32 Vico Liang New Issue
2016-08-22 07:32 Vico Liang Assigned To => oan
2016-08-22 07:34 Vico Liang Description Updated View Revisions
2016-08-22 11:07 oan Relationship added duplicate of 0025042
2016-11-03 17:38 abv Target Version 7.1.0 => 7.2.0
2017-07-20 12:43 oan Target Version 7.2.0 => 7.3.0
2018-02-25 21:09 abv Target Version 7.3.0 => 7.4.0*
2018-11-07 16:30 oan Relationship added related to 0028379
2018-11-07 17:00 oan Note Added: 0080853
2018-11-07 17:00 oan Assigned To oan => msv
2018-11-07 17:00 oan Status new => feedback
2018-11-07 17:18 msv Note Added: 0080859
2018-11-07 17:19 msv Note Added: 0080863
2018-11-07 17:19 msv Assigned To msv => Vico Liang

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