akjay

> CAD Assistant is using OpenCascade's "PMI Visualization Technology" commercial component. That said OpenCascade has some free tools to support GD&T data when reading/writing STEP files. Main class `XCAFDoc_DimTolTool` even...

Thank you, I just called the GetGDTPresentations function to get all TopoDS_Shape for the GD&T,the Display it out, it workd well,but can not move when drag,seems have much work to...

There is a question, if I add some geometric tolerance information,how to compute the presentation manually？Dose occ support some function to do this,did not seen any information about this in...

Is the presentation should be draw by myself，the occ did not provide a tool to draw this except pmi visualization commercial module？

Yes，for the STEP file imported in before，I can show presentations for these GD&Ts because they are part of ap242 file and maybe already drawn by other software，so the function can...

Eh,I found a tool named [SFA ](https://dev.opencascade.org/project/step-file-analyzer)in opencascade website told that can process STEP files. And I tried with my model drawn by Solidworkd 2021,pictures below show the GD&T representation...

Here is the source [code](https://github.com/usnistgov/SFA)

> @akjay Can you share your code? Using the OpenCascade for reading the GD&T and displaying it out, Thank you! Use this. 1.Call XCAFDoc_DimTolTool::GetDimensionLabels() to get the list of dimension...

I'm using C++, not know how to do this with PythonOCC.

Windows版本的编译太难了，简直是劝退的节奏