Use external mesh generators (such as Gmsh) #217
Description
Motiviation:
- Define simple geometry in python (such as @barche already implemented)
- Gmsh has built-in support for curved boundaries (splines)
- Gmsh generates high-order triangular, tetrahedral, quadrilateral, hexahedral, and hybrid meshes.
- Having the curved geometric information in coolfluid itself (splines) allows for nice mesh-refinement algorithms
The steps necessary for Gmsh:
- FindGmsh.cmake file to locate gmsh mesher
- Meta-mesh generation API
- Write gmsh geo file
- system call to gmsh with correct arguments
Using a generic Meta-mesh generation API we will also be able to also support CGAL, or the BlockMesher @barche implemented.
On the same note, we could perhaps also extract a geometry from an already imported mesh.
- identify surfaces or volumes from regions, splines or NURBS from curved boundaries.
- write Gmsh geo file
This will allow to remesh a mesh easily.