Extracts unique edges from triangular faces, computes Euclidean edge weights,
and returns an igraph graph object suitable for geodesic distance
computation.
Usage
make_surf_graph(vertices, faces)
Arguments
- vertices
Numeric matrix (n x 3) of vertex coordinates.
- faces
Integer matrix (m x 3) of face indices (1-indexed).
Value
An igraph graph object with weighted edges.
References
Markello RD et al. (2022) Nature Methods 19:1472-1480.
doi:10.1038/s41592-022-01625-w
Examples
vertices <- matrix(
c(0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1),
nrow = 4, byrow = TRUE
)
faces <- matrix(c(1L, 2L, 3L, 2L, 3L, 4L), nrow = 2, byrow = TRUE)
g <- make_surf_graph(vertices, faces)
