trimesh.interfaces package¶
Submodules¶
trimesh.interfaces.blender module¶
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trimesh.interfaces.blender.boolean(meshes, operation='difference')¶
trimesh.interfaces.generic module¶
trimesh.interfaces.gmsh module¶
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trimesh.interfaces.gmsh.load_gmsh(file_name, gmsh_args=None)¶ Returns a surface mesh from CAD model in Open Cascade Breap (.brep), Step (.stp or .step) and Iges formats Or returns a surface mesh from 3D volume mesh using gmsh.
For a list of possible options to pass to GMSH, check: http://gmsh.info/doc/texinfo/gmsh.html
An easy way to install the GMSH SDK is through the gmsh-sdk package on PyPi, which downloads and sets up gmsh:
>>> pip install gmsh-sdk
- Parameters
- file_namestr
Location of the file to be imported
- gmsh_args(n, 2) list
List of (parameter, value) pairs to be passed to gmsh.option.setNumber
- max_elementfloat or None
Maximum length of an element in the volume mesh
- Returns
- meshtrimesh.Trimesh
Surface mesh of input geometry
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trimesh.interfaces.gmsh.to_volume(mesh, file_name=None, max_element=None, mesher_id=1)¶ Convert a surface mesh to a 3D volume mesh generated by gmsh.
An easy way to install the gmsh sdk is through the gmsh-sdk package on pypi, which downloads and sets up gmsh:
pip install gmsh-sdk
Algorithm details, although check gmsh docs for more information: The “Delaunay” algorithm is split into three separate steps. First, an initial mesh of the union of all the volumes in the model is performed, without inserting points in the volume. The surface mesh is then recovered using H. Si’s boundary recovery algorithm Tetgen/BR. Then a three-dimensional version of the 2D Delaunay algorithm described above is applied to insert points in the volume to respect the mesh size constraints.
The Frontal” algorithm uses J. Schoeberl’s Netgen algorithm. The “HXT” algorithm is a new efficient and parallel reimplementaton of the Delaunay algorithm. The “MMG3D” algorithm (experimental) allows to generate anisotropic tetrahedralizations
- Parameters
- meshtrimesh.Trimesh
Surface mesh of input geometry
- file_namestr or None
Location to save output, in .msh (gmsh) or .bdf (Nastran) format
- max_elementfloat or None
Maximum length of an element in the volume mesh
- mesher_idint
3D unstructured algorithms: 1: Delaunay, 4: Frontal, 7: MMG3D, 10: HXT
- Returns
- dataNone or bytes
MSH data, only returned if file_name is None
trimesh.interfaces.scad module¶
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trimesh.interfaces.scad.boolean(meshes, operation='difference')¶ Run an operation on a set of meshes
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trimesh.interfaces.scad.interface_scad(meshes, script)¶ A way to interface with openSCAD which is itself an interface to the CGAL CSG bindings. CGAL is very stable if difficult to install/use, so this function provides a tempfile- happy solution for getting the basic CGAL CSG functionality.
meshes: list of Trimesh objects script: string of the script to send to scad.
Trimesh objects can be referenced in the script as $mesh_0, $mesh_1, etc.