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parallel finite element unstructured meshes
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.geo file or other CAD model file To .dmg file #196

Closed cenxin995886 closed 5 years ago

cenxin995886 commented 5 years ago

Hi,I wanted to use GMSH to generate the initial grid and then use PUMI for parallel grid partitioning, refinement, and more. But PUMI only use .smb and .dmg, PUMI could transport .msh file to .smb file through from_gmsh.But in this way,I have to use gmodel to create geometric model and get .geofile .dmg file .It's very inconvenient,It is certainly not possible to create complex geometric models.So I want to do that PUMI could convert .geo file or other CAD model files directly to .dmg file.In this way, I can directly create geometric models in GMSH and CAD modeling software. In summary, I wanted to write an interface that allows PUMI to read .geo files in GMSH and other CAD model files and convert them to .dmg files. So,would you give me some ideas?where should I have a look ,where could I reference to study? Thany you !

jacobmerson commented 5 years ago

Do you have access to Simmetrix? simTranslate can be used to convert a cad file to a simmetrix .smd file, then mdlConvert can be used to convert this into a pumi .dmg model.

Please see: https://github.com/SCOREC/core/wiki/Geometric-Models

This might be a good starting point.

cenxin995886 commented 5 years ago

Sorrry,I didn't have access to Simmetrix because it is not an open software.I can't find .smd file and the relevant Simmetrix header files were also unavailable.I reckon it is very difficult in this way for me. So I only use open software just like GMSH. I find GModel could generate .dmg model file and .geo model file.So I wonder if GModel might be a good starting point? And I want to wirte .dmg file,how and where I could read the .dmg file content and format? Thank you~

jacobmerson commented 5 years ago

You might be able to write a .geo reader in GModel. @ibaned and @cwsmith might have something more to say on this issue.

ibaned commented 5 years ago

.geo's syntax is non-trivial, but it could be done in theory. I have code in another project for building general parsers in C++, so that could help.

cenxin995886 commented 5 years ago

Hi,I don't have to convert from .geo model files, other general CAD model files are also available, such as .iges, .step.Those general CAD model files are the best choice. So could you provide me with the code connection or file for the project you are working on?thank you. @ibaned

cwsmith commented 5 years ago

I'm closing this issue. Please reopen if needed.