Method half_edge

splashsurf_lib/src/halfedge_mesh.rs:134–147

Returns the half-edge between the "from" and "to" vertex if it exists in the mesh

(&self, from: usize, to: usize)

    /// Returns the half-edge between the "from" and "to" vertex if it exists in the mesh
    pub fn half_edge(&self, from: usize, to: usize) -> Option<HalfEdge> {
        let from_edges = self
            .vertex_half_edge_map
            .get(from)
            .expect("vertex must be part of the mesh");
        for &he_idx in from_edges {
            let he = &self.half_edges[he_idx];
            if he.to == to {
                return Some(*he);
            }
        }

        None
    }

    /// Returns whether the given half-edge or its opposite half-edge is a boundary edge
    pub fn is_boundary_edge(&self, half_edge: HalfEdge) -> bool {