Mesh Representation

[yujanshrestha]

Read and write the existing Freesurfer mesh format.

If the topology is present in the file then we will use that, otherwise, a Delaunay triangulation will be used to generate the topology.

Mesh representation in memory

• Mapping of tetrahedra id to vertices
• Vertex (Point) array will be N x 3 array, where N is the number of vertices
• Tetrahedra array will be T x 4 array, where T is the number of terehedra and the values are indices into the vertex array.
• And arrays going in opposite direction such as like Vertex index -> Tetrahedra indices.