I have a 3d mesh in .mesh format which can be read by medit visualization program. However I need to convert it into the .nodes, .ele and .face format that is the output format of tetgen (the 3d Delaunay tetrahedralization program) . What is the best way to do this conversion of formats? Is there a free program available to do this conversion?
How to convert from .mesh format to .nodes, .ele and .face format?
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The MEDIT_TO_FEM program produces .node and .ele files from an medit .mesh file.
You might have to hack it to get triangles, though. It's simple: each (positively-oriented) tetrahedral element with vertices
has triangular faces
The orientation of the faces will of course depend on the orientation of the element, so your triangles might require a different ordering of their vertices.