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0028500Open CASCADE[OCCT] OCCT:Meshpublic2017-03-01 19:112019-11-07 13:03
msv 
oan 
normalminor 
newopen 
[OCCT] 7.1.0 
[OCCT] 7.5.0* 
bugs mesh bug28500
0028500: Artifact in shaded view of the shape
During meshing with BRepMesh of the attached shape the algorithm reports OpenWire meshing status. This results in artifact displayed in shaded view in the form of a green line (see the picture).
Actually the faces for which the status OpenWire is reported are valid faces. It is needed to teach BRepMesh produce triangles for such faces, even if they are degenerated in a line, in order to produce conform mesh.
restore shape_mesh_artifact.brep a
incmesh a 0.01
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parent of 0031043verified oan GCPnts_TangentialDeflection generates points which number is inconsistent with MinimumOfPoints parameter 
? shape_mesh_artifact.brep (60,209) 2017-03-01 19:11
https://tracker.dev.opencascade.org/
png mesh_pb.PNG (15,383) 2017-03-01 19:12
https://tracker.dev.opencascade.org/
Issue History
2017-03-01 19:11msvNew Issue
2017-03-01 19:11msvAssigned To => oan
2017-03-01 19:11msvFile Added: shape_mesh_artifact.brep
2017-03-01 19:12msvFile Added: mesh_pb.PNG
2017-03-02 11:18oanNote Added: 0064068
2017-03-02 12:30msvNote Added: 0064073
2017-07-20 12:43oanTarget Version7.2.0 => 7.3.0
2017-08-31 16:18mkvTest case number => bugs mesh bug28500
2017-08-31 16:18mkvNote Added: 0070125
2018-02-25 23:12abvTarget Version7.3.0 => 7.4.0
2019-09-06 16:16oanTarget Version7.4.0 => 7.5.0*
2019-10-07 18:59oanRelationship addedparent of 0031043
2019-10-19 19:23gitNote Added: 0088331
2019-10-20 00:42gitNote Added: 0088339
2019-10-20 00:44gitNote Added: 0088340
2019-10-21 19:36gitNote Added: 0088394
2019-10-22 12:06gitNote Added: 0088407
2019-10-28 13:49gitNote Added: 0088634
2019-10-30 12:09gitNote Added: 0088659
2019-11-07 13:03gitNote Added: 0088775

Notes
(0064068)
oan   
2017-03-02 11:18   
DC,

It would be easy to try to implement custom processing of cases consisting of two edges which ends are covered by vertex tolerances after integration of 0026106 as far it allows processing and modification of wires and particular edges.
(0064073)
msv   
2017-03-02 12:30   
I agree.
(0070125)
mkv   
2017-08-31 16:18   
Problem described in issue is reproduced on current state of OCCT.
(0088331)
git   
2019-10-19 19:23   
Branch CR28500 has been created by oan.

SHA-1: 845785da4787cc0f8781cd6c79bec110a75d7744


Detailed log of new commits:

Author: oan
Date: Sat Oct 19 19:22:38 2019 +0300

    0028500: Artifact in shaded view of the shape
    increase minimum number of discretization points by one explicitly on each iteration of model healer to cover cases degenerated to line
(0088339)
git   
2019-10-20 00:42   
Branch CR28500 has been updated by oan.

SHA-1: f92206a61a77ff4420d6387404a04f900e0e2779


Detailed log of new commits:

Author: oan
Date: Sun Oct 20 00:41:48 2019 +0300

    # modified test case

(0088340)
git   
2019-10-20 00:44   
Branch CR28500 has been updated forcibly by oan.

SHA-1: a66a5d097c396d3140e98c52bb66f047a039eeb6
(0088394)
git   
2019-10-21 19:36   
Branch CR28500 has been updated forcibly by oan.

SHA-1: 9dfde6c9b3b6b8605e33febf5cc14db6e9661df8
(0088407)
git   
2019-10-22 12:06   
Branch CR28500 has been updated by oan.

SHA-1: 18d60a72fc7b7573973c385d5df6e320cea2c3b7


Detailed log of new commits:

Author: oan
Date: Tue Oct 22 11:28:49 2019 +0300

    # updated test cases

(0088634)
git   
2019-10-28 13:49   
Branch CR28500 has been updated forcibly by oan.

SHA-1: af5ac75fa762e7026ee7c8e04a6a6876b9e1be63
(0088659)
git   
2019-10-30 12:09   
Branch CR28500_1 has been created by oan.

SHA-1: 3c7e218e18aa3c2ef01354bc61d7b0cfb47bd2a0


Detailed log of new commits:

Author: oan
Date: Wed Oct 30 12:08:19 2019 +0300

    0028500: Artifact in shaded view of the shape increase minimum number of discretization points by one explicitly on each iteration of model healer to cover cases degenerated to line
(0088775)
git   
2019-11-07 13:03   
Branch CR28500_1 has been updated forcibly by oan.

SHA-1: 0d5b7b80e0305729e0818a21fefe16c6c7242395