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0023189Open CASCADE[OCCT] OCCT:Modeling Algorithmspublic2012-06-04 16:182017-07-20 21:17
0023189: It is useful to have a DRAW command that determines the global surface continuity of a face
Many algorithms (e.g. 3d-offset) require faces with at least C1-continuous surfaces underlying. So, new DRAW command is required.
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duplicate of 0023190assigned msv offset Draw command raise exception "Offset with no C1 Surface" 
Issue History
2012-06-04 16:18jgvNew Issue
2012-06-04 16:18jgvAssigned To => jgv
2012-06-04 16:28abvNote Added: 0020642
2017-07-19 18:36mkvAssigned Tojgv => msv
2017-07-19 18:36mkvStatusnew => assigned
2017-07-20 10:59msvNote Added: 0068469
2017-07-20 11:00msvRelationship addedhas duplicate 0023190
2017-07-20 11:00msvNote Added: 0068470
2017-07-20 11:00msvAssigned Tomsv => bugmaster
2017-07-20 11:00msvStatusassigned => feedback
2017-07-20 11:03msvRelationship deletedhas duplicate 0023190
2017-07-20 11:03msvRelationship addedduplicate of 0023190
2017-07-20 21:17bugmasterStatusfeedback => closed
2017-07-20 21:17bugmasterResolutionopen => suspended

2012-06-04 16:28   
I suggest that the algorithms that require C1 continuity (like offset) could split the input shape by C0 criterion, which should allow them to proceed. The tools for splitting shapes by continuity are available in OCCT (see e.g. command DT_SplitShape in DRAW). Is that feasible?
2017-07-20 10:59   
The command DT_SplitShape can be used to determine surface continuity.
Splitting of shape in offset algorithm is the scope of another bug 0023190.
2017-07-20 11:00   
I propose to close this bug.