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0028719Community[OCCT] OCCT:Meshpublic2017-05-07 16:562018-12-03 10:38
Vico Liang 
apn 
normalminor 
verifiedfixed 
 
[OCCT] 7.4.0* 
bugs mesh bug28719
0028719: Mesh - Display issue for special model
model display_issue.brep have display issue. There are severial white grids area which should not be there for a valid model.
bugs mesh bug28719
No tags attached.
? display_issue.brep (9,632,121) 2017-05-07 16:56
https://tracker.dev.opencascade.org/
jpg display_issue.jpg (76,991) 2017-05-07 16:59
https://tracker.dev.opencascade.org/
Issue History
2017-05-07 16:56Vico LiangNew Issue
2017-05-07 16:56Vico LiangAssigned To => kgv
2017-05-07 16:56Vico LiangFile Added: display_issue.brep
2017-05-07 16:59Vico LiangFile Added: display_issue.jpg
2017-05-07 17:01Vico LiangNote Added: 0065791
2017-05-07 17:48kgvNote Added: 0065792
2017-05-07 17:48kgvNote Edited: 0065792bug_revision_view_page.php?bugnote_id=65792#r16552
2017-05-07 17:49kgvNote Edited: 0065792bug_revision_view_page.php?bugnote_id=65792#r16553
2017-05-07 17:49kgvAssigned Tokgv => msv
2017-05-07 17:49kgvCategoryOCCT:Visualization => OCCT:Mesh
2017-05-07 17:50kgvNote Edited: 0065792bug_revision_view_page.php?bugnote_id=65792#r16554
2017-05-08 04:58Vico LiangNote Added: 0065793
2017-07-20 12:43oanTarget Version7.2.0 => 7.3.0
2017-08-29 13:05apvTest case number => bugs mesh bug28719
2017-08-29 13:05apvNote Added: 0070041
2017-08-29 13:36kgvSummaryDisplay issue for special model => Mesh - Display issue for special model
2018-02-25 21:14abvTarget Version7.3.0 => 7.4.0*
2018-11-02 18:30oanNote Added: 0080660
2018-11-02 18:30oanAssigned Tomsv => bugmaster
2018-11-02 18:30oanStatusnew => feedback
2018-11-06 16:26nbvNote Added: 0080767
2018-11-06 16:27nbvAssigned Tobugmaster => msv
2018-11-06 16:57msvAssigned Tomsv => oan
2018-11-06 16:57msvStatusfeedback => assigned
2018-11-16 14:05gitNote Added: 0081120
2018-11-16 14:08oanNote Added: 0081121
2018-11-16 14:08oanAssigned Tooan => msv
2018-11-16 14:08oanStatusassigned => resolved
2018-11-16 14:08oanSteps to Reproduce Updatedbug_revision_view_page.php?rev_id=20381#r20381
2018-11-16 15:35oanNote Added: 0081125
2018-11-30 11:56oanAssigned Tomsv => pdn
2018-11-30 13:50msvNote Added: 0081308
2018-11-30 13:50msvAssigned Topdn => bugmaster
2018-11-30 13:50msvStatusresolved => reviewed
2018-11-30 14:18apnNote Added: 0081309
2018-11-30 14:18apnStatusreviewed => tested
2018-12-02 14:48apnChangeset attached => occt master 87036bbb
2018-12-02 14:48apnAssigned Tobugmaster => apn
2018-12-02 14:48apnStatustested => verified
2018-12-02 14:48apnResolutionopen => fixed
2018-12-03 10:38gitNote Added: 0081335

Notes
(0065791)
Vico Liang   
2017-05-07 17:01   
It might be meshing algorithm issue, i'm not sure though.
(0065792)
kgv   
2017-05-07 17:48   
(edited on: 2017-05-07 17:50)
This is not grid area - these are isolines drawn in place of Faces without triangulation.
Thus, most likely BRepMesh has failed on them.

I bet you get this model using some BOP producing very narrow faces in some places?

(0065793)
Vico Liang   
2017-05-08 04:58   
Dear kgv,
You're right. This model has narrow faces which is produced by BOP. I ever see this issue when importing model from STEP/IGES generated by other CAD software.
(0070041)
apv   
2017-08-29 13:05   
Problem described in issue is reproduced on current state of OCCT.
(0080660)
oan   
2018-11-02 18:30   
Please check on current master.
(0080767)
nbv   
2018-11-06 16:26   
The problem is still actual.

The test case "bugs mesh bug28719" has already been created.
(0081120)
git   
2018-11-16 14:05   
Branch CR28719 has been created by oan.

SHA-1: 38fc1e3c621e4230b241c0a79a209998f0266b44


Detailed log of new commits:

Author: oan
Date: Fri Nov 16 14:03:51 2018 +0300

    0028719: Mesh - Display issue for special model
    
    Clean existing triangulation before meshing.
(0081121)
oan   
2018-11-16 14:08   
Actually, no, it is not actual for current master.
Test case "bugs mesh bug28719" does not clean existing triangulation before display, so BRepMesh functionality is not called properly.

Test case has been updated.

Please review and close.
(0081125)
oan   
2018-11-16 15:35   
Test resuls:

http://occt-tests/CR28719-master-OAN-OCCT/Debian80-64/summary.html [^]
http://occt-tests/CR28719-master-OAN-OCCT/Windows-64-VC14/diff_summary.html [^]
(0081308)
msv   
2018-11-30 13:50   
Reviewed.
(0081309)
apn   
2018-11-30 14:18   
bugs mesh bug28719 - OK
(0081335)
git   
2018-12-03 10:38   
Branch CR28719 has been deleted by inv.

SHA-1: 38fc1e3c621e4230b241c0a79a209998f0266b44