View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0033765 | Community | OCCT:Data Exchange | public | 2024-07-13 21:41 | 2024-08-08 21:22 |
| Reporter | galbramc | Assigned To | dpasukhi | ||
| Priority | normal | Severity | major | ||
| Status | assigned | Resolution | open | ||
| Platform | Linux | OS | Ubuntu 20.04 | ||
| Product Version | 7.8.0 | ||||
| Summary | 0033765: Data Exchange, IGES Export - Missing Model Curves in transfer cache | ||||
| Description | IGESControl_Writer with mode=1 missing Model Curves in Transfer_FinderProcess I'm trying to set name and color attributes for Curves when exporting to BRep IGES files, but the Curve IGES entities are missing the Curve entities in the Transfer_FinderProcess. The attached example produces the following output: Line DNum should !=0: DNum=0 Line DNum should !=0: DNum=0 Line DNum should !=0: DNum=0 Line DNum should !=0: DNum=0 Line DNum should !=0: DNum=0 Line DNum should !=0: DNum=0 Line DNum should !=0: DNum=0 Line DNum should !=0: DNum=0 Line DNum should !=0: DNum=0 Line DNum should !=0: DNum=0 Line DNum should !=0: DNum=0 Line DNum should !=0: DNum=0 With the proposed fix below I get: Line DNum should !=0: DNum=19 Line DNum should !=0: DNum=23 Line DNum should !=0: DNum=25 Line DNum should !=0: DNum=27 Line DNum should !=0: DNum=29 Line DNum should !=0: DNum=31 Line DNum should !=0: DNum=33 Line DNum should !=0: DNum=35 Line DNum should !=0: DNum=37 Line DNum should !=0: DNum=39 Line DNum should !=0: DNum=41 Line DNum should !=0: DNum=43 | ||||
| Steps To Reproduce | Compile and execute the attached code snippet. | ||||
| Additional information and documentation updates | This change to BRepToIGESBRep_Entity seems to resolve the issue:
Standard_Integer BRepToIGESBRep_Entity::AddEdge(const TopoDS_Edge& myedge,
const Handle(IGESData_IGESEntity)& mycurve3d)
{
if ( myedge.IsNull()) return 0;
const TopoDS_Shape& E = myedge;
Handle(IGESData_IGESEntity) C = mycurve3d;
Standard_Integer index = myEdges.FindIndex(E);
if (index == 0) {
index = myEdges.Add(E);
myCurves.Add(C);
} else {
myCurves.Substitute(index,C); // Fix: The most recent curve must be stored
}
return index;
}
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| Tags | No tags attached. | ||||
| Test case number | |||||
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BRepToIGESBRep_Entity.cpp (1,263 bytes) Makefile (907 bytes) |
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Dear @galbramc thank you for your. It is very helpful. I will process your bug in the next week. But at least I will try to do that. In case, if there will be no any notes or news, please send a new note to remind. I found a possible more clear fix, let me check and process it :) If you would like to became a contributor, please check https://dev.opencascade.org/content/occt-github-new-way-collaborate |
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@galbramc but to prepare more correct fix, could you please share file sample? And prepared test case :) |
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Thank you for the prompt response! Unfortunately getting the CLA signed by my employer is too much of a hassle for me to become a contributor. I'm not sure what sample file you would like me to share? The problem is with the export (I believe the import is ok). I provided the attached BRepToIGESBRep_Entity.cpp file that reproduces the problem. Could you be more specific about what you would like? I also, unfortunately, am not familiar with the testing framework used by OCC to provide a test case... I regularly use other unit testing frameworks. I'd be glad to test out your clearer fix. |
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Thank you, sorry, i didn't check the cpp file. I thought that that filed contained fix. But it is a sample to reproduce. That even more helpful. |
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I should point out that what I put together was minimal to demonstrate this specific problem. I think a more rigorous test would be to loop over all the sub-shapes and make sure they are found in the cache. Please let me know if I can help in any other way. |
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@dpasukhi I was curious if you had an update on the cleaner fix for this bug? I believe your first message asked me to ping you around this time. |
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@galbrams thank you. Yes, I was asking to ping me. My apologies, there is no update for now. I will try to prepare changes in ongoing days. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2024-07-13 21:41 | galbramc | New Issue | |
| 2024-07-13 21:41 | galbramc | Assigned To | => ika |
| 2024-07-13 21:41 | galbramc | File Added: BRepToIGESBRep_Entity.cpp | |
| 2024-07-13 21:41 | galbramc | File Added: Makefile | |
| 2024-07-14 09:39 | dpasukhi | Assigned To | ika => dpasukhi |
| 2024-07-14 09:39 | dpasukhi | Summary | IGESControl_Writer with mode=1 missing Model Curves in Transfer_FinderProcess => Data Exchange, IGES Import - Missing Model Curves in transfer cache |
| 2024-07-14 09:39 | dpasukhi | Description Updated | |
| 2024-07-14 09:39 | dpasukhi | Additional Information Updated | |
| 2024-07-14 09:42 | dpasukhi | Note Added: 0116172 | |
| 2024-07-14 09:43 | dpasukhi | Note Added: 0116173 | |
| 2024-07-14 09:44 | dpasukhi | Note Edited: 0116173 | |
| 2024-07-14 18:26 | galbramc | Note Added: 0116174 | |
| 2024-07-14 20:22 | dpasukhi | Summary | Data Exchange, IGES Import - Missing Model Curves in transfer cache => Data Exchange, IGES Export- Missing Model Curves in transfer cache |
| 2024-07-14 20:24 | dpasukhi | Note Added: 0116175 | |
| 2024-07-14 20:25 | dpasukhi | Summary | Data Exchange, IGES Export- Missing Model Curves in transfer cache => Data Exchange, IGES Export - Missing Model Curves in transfer cache |
| 2024-07-14 20:29 | galbramc | Note Added: 0116176 | |
| 2024-07-22 19:49 | galbramc | Note Added: 0116279 | |
| 2024-07-22 20:05 | dpasukhi | Note Added: 0116280 | |
| 2024-07-22 20:05 | dpasukhi | Status | new => assigned |
