tet_mesh_tet_neighbors, a C++ code which reads information defining a tet mesh of points in 3D, and determines, for each face of each tetrahedron, the index of the neighboring tetrahedron that shares that face.
The tet mesh is defined by a node file containing the coordinates of nodes, and a tetra file containing sets of 4 or 10 node indices. For this calculation, though, only the tetra file is needed.
If a tetrahedron is on the boundary, then one or more of its faces will not be shared by any tetrahedron. Such cases will be indicated by specifying the corresponding neighbor value as -1.
tet_mesh_tet_neighbors prefixwhere prefix is the common file prefix:
The computer code and data files described and made available on this web page are distributed under the MIT license
tet_mesh_tet_neighbors is available in a C++ version and a FORTRAN90 version and a MATLAB version.
NEIGHBORS_TO_METIS_GRAPH, a C++ code which reads a tet mesh neighbor file created by TET_MESH_TET_NEIGHBORS and writes a modified version of the same data suitable for input to the mesh partitioning program METIS.
TET_MESH, a C++ code which is useful for work with tet meshes.
TET_MESH_BOUNDARY, a C++ code which returns the nodes and faces of the boundary of a tetrahedral mesh, which themselves form a 3D triangular mesh or "TRI_SURFACE".
TET_MESH_DISPLAY_OPENGL, a C++ code which reads a tet mesh and displays the nodes and edges using OpenGL.
TET_MESH_L2Q, a C++ code which converts a linear to quadratic tet mesh.
TET_MESH_Q2L, a C++ code which can convert a quadratic (10-node) tet mesh to a linear (4-node) tet mesh.
TET_MESH_QUALITY, a C++ code which can compute the quality of a tet mesh.
TET_MESH_RCM, a C++ code which takes a tet mesh and relabels the nodes to reduce the bandwidth of the corresponding adjacency matrix.
TET_MESH_REFINE, a C++ code which can refine a tet mesh.
TET_MESH_VOLUMES, a C++ code which computes the volume of each tetrahedron in a tet mesh;