View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0032852 | Community | OCCT:Modeling Data | public | 2022-02-22 16:39 | 2022-02-24 11:54 |
| Reporter | Heike | Assigned To | |||
| Priority | normal | Severity | major | ||
| Status | new | Resolution | open | ||
| Platform | Linux | OS | Debian 6.0 | ||
| Product Version | 7.5.0 | ||||
| Summary | 0032852: Read a bincad file throws an exception | ||||
| Description | I write a CAD file with BinTools_ShapeSet, and when I read it back in it doesn't work. | ||||
| Steps To Reproduce | write: BinTools_ShapeSet mySet; mySet.SetFormatNb(1); mySet.SetWithTriangles(false); mySet.Add(transformedShape); mySet.Index(transformedShape); std::ofstream out(stdFileName, std::ofstream::binary); read: std::filebuf fb; if (fb.open(stdFileName.c_str(), std::ios::in | std::ios::binary)) { std::istream is(&fb); try { OCC_CATCH_SIGNALS mySet.Read(is); } ===================== Draw script: restore transformedShape_bug.brep a binsave a transformedShape_bug.bbrep binrestore transformedShape_bug.bbrep b Output: An exception was caught 000001B1A9F914A0 : Standard_Failure: EXCEPTION in BinTools_SurfaceSet::ReadSurface(..) 000001B1A9F92960 : Standard_ConstructionError: Offset with no C1 Surface | ||||
| Tags | No tags attached. | ||||
| Test case number | |||||
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The original file seems to be to big to get uploaded. orig_geometry.x_t.tar.gz (1,076,852 bytes) |
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Dear Heike, Thank you for the described problem. In order to make a complete code reproduce, could you attach here the BRep shape corresponding to the variable transformedShape in your code? |
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I tried to upload the brep file (compressed), but the file exceeds the max size: image.png (14,840 bytes) |
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@Heike have you tried using more modern compression algorithms like `tar.xz`? I guess that it may beat the difference to fit into current limits. Otherwise - may you try sharing the file in some other way temporarily? I would expect that problem should be reproducible with smaller data set, so that alternatively you may explode the shape and save a smaller .BREP. |
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I tried xz now it the file is still slightly too large to upload. I am not sure how I should reduce this example. I run at the moment approx 1000 CAD files, and I see this only happening in a very few CAD models. So it must be related to what exactly is stored in these files. I will try to send the file via email to your support..... |
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Email via support is too long way. In order to reduce this file: suppose your shape is a compound of some other shapes. You can use TopoDS_Iterator to explode it on subshapes and save each subshape as individual shape in order to try reproducing on each of them. Using such approach you can reduce the reproducible shape to very small one. |
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By the way, it is also possible splitting tar.gz into multiple-file archive https://unix.stackexchange.com/questions/61774/create-a-tar-archive-split-into-blocks-of-a-maximum-size |
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I have obtained the file transformedShape_bug.brep.xz from our support. I have repacked it with 7-zip, and it takes now only 1.5Mb. So, I have attached it here. transformedShape_bug.7z (1,571,680 bytes) |
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Draw[2]> XOpen {C:\work\Downloads\transformedShape_bug\transformedShape_bug222.xbf} D
BinDrivers_DocumentRetrievalDriver: error of Shape Section EXCEPTION in BinTools_SurfaceSet::ReadSurface(..)
0000013EA4C29B10 : Standard_ConstructionError: Offset with no C1 Surface
BinLDrivers_DocumentRetrievalDriver: warning: failure reading attribute TNaming_NamedShape
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| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2022-02-22 16:39 | Heike | New Issue | |
| 2022-02-22 16:39 | Heike | Assigned To | => msv |
| 2022-02-22 16:44 | Heike | Note Added: 0107033 | |
| 2022-02-22 16:44 | Heike | File Added: orig_geometry.x_t.tar.gz | |
| 2022-02-22 18:32 |
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Note Added: 0107035 | |
| 2022-02-22 19:03 | Heike | Note Added: 0107036 | |
| 2022-02-22 19:03 | Heike | File Added: image.png | |
| 2022-02-22 19:36 | kgv | Note Added: 0107037 | |
| 2022-02-23 13:57 | Heike | Note Added: 0107039 | |
| 2022-02-24 00:18 |
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Note Added: 0107044 | |
| 2022-02-24 00:51 | kgv | Note Added: 0107045 | |
| 2022-02-24 10:50 |
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Note Added: 0107047 | |
| 2022-02-24 10:50 |
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File Added: transformedShape_bug.7z | |
| 2022-02-24 10:55 | kgv | Note Added: 0107048 | |
| 2022-02-24 11:46 |
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Steps to Reproduce Updated | |
| 2022-02-24 11:47 |
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Steps to Reproduce Updated |
