View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0033601 | Community | OCCT:Data Exchange | public | 2024-02-14 22:44 | 2024-02-15 16:25 |
| Reporter | PeterB | Assigned To | ika | ||
| Priority | normal | Severity | just a question | ||
| Status | new | Resolution | open | ||
| Platform | Windows | OS | VC++ 2019 | ||
| Product Version | 7.7.1 | ||||
| Summary | 0033601: Level of Detail (LOD) filtering support during STEP imports | ||||
| Description | Hello, we wonder whether OpenCascade features LOD (level of detail) filtering during STEP imports. We generate six 2D views from STEP files. For some STEP files this processing takes very long - esp. these phases / function calls: + Handle_HLRBRep_Algo::Update() + Handle_HLRBRep_Algo::Hide() And it results in a huge number of graphic items. That's why we would like to use LOD filtering to reduce both processing time and number of graph items in such cases. Attached you'll find our STEP-to-DXF Windows cmdline tool, that showcases how we use OpenCascade to generate these six 2D views. You might know this tool already from some of our OCC issue tracker tickets. Pls search for this function: + StepImportImpl::TransferTo2d() Thanks in advance and looking forward to your response! Best regards, PeterB | ||||
| Tags | No tags attached. | ||||
| Test case number | |||||
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STEP-to-DXF-CmdLineTool.zip (10,277 bytes) |
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Dear @PeterB, the quastion is not clear. LOD is out-of-context of your program. LOD used to determinate level of mesh to render. And we use that on 0-9 pre-defined levels for visualization only. OpenSource HLR don't working with mesh directly, they working with geometry. That is why we can't correcly answer your quastion. Any result that you recieve from STEP is geometry. It is not possible to leveling geometry quility. Best regards, Dmitrii. |
