cortex.polyutils.Surface.extract_geodesic_chunk

Surface.extract_geodesic_chunk(origin, radius)

Extract a chunk of the surface that is within radius of the origin by geodesic distance.

Parameters:

originint

Vertex index to measure geodesic distance from.

radiusfloat

Maximum geodesic distance (in mm) from origin for a vertex to be included in the chunk.

Returns:

sel_ptsndarray

Vertex coordinates of the extracted chunk (all vertices within radius of origin).

sel_polysndarray

Triangle faces of the extracted chunk, as indices into sel_pts. Includes only faces whose vertices are all within radius of origin.