mesh_graph/ops/cleanup/
edge_boundary.rs

1use tracing::{error, instrument};
2
3use crate::{MeshGraph, VertexId, error_none};
4
5impl MeshGraph {
6    /// Ensure that if one of the outgoing halfedges of this vertex is a boundary halfedge,
7    /// then it will be the one in [`Vertex::outgoing_halfedge`].
8    ///
9    /// The method [`Vertex::is_boundary`] relies on this.
10    #[instrument(skip(self))]
11    pub fn make_outgoing_halfedge_boundary_if_possible(&mut self, vertex_id: VertexId) {
12        if !self.vertices.contains_key(vertex_id) {
13            error!("Vertex not found");
14            return;
15        }
16
17        let boundary_he_id = self.vertices[vertex_id]
18            .outgoing_halfedges(self)
19            .filter_map(|he_id| {
20                self.halfedges
21                    .get(he_id)
22                    .or_else(error_none!("Halfedge not found"))
23                    .map(|he| (he, he_id))
24            })
25            .find(|(he, _)| he.is_boundary());
26
27        if let Some((_, boundary_he_id)) = boundary_he_id {
28            self.vertices[vertex_id].outgoing_halfedge = Some(boundary_he_id);
29        }
30    }
31
32    /// Ensure that if one of the outgoing halfedges of any vertex is a boundary halfedge,
33    /// then it will be the one in [`Vertex::outgoing_halfedge`].
34    ///
35    /// The method [`Vertex::is_boundary`] relies on this.
36    #[instrument(skip(self))]
37    pub fn make_all_outgoing_halfedges_boundary_if_possible(&mut self) {
38        let boundary_pairs = self
39            .halfedges
40            .iter()
41            .filter_map(|(he_id, he)| {
42                if he.is_boundary() {
43                    he.start_vertex(self).map(|v_id| (v_id, he_id))
44                } else {
45                    None
46                }
47            })
48            .collect::<Vec<_>>();
49
50        for (boundary_vertex_id, boundary_he_id) in boundary_pairs {
51            if let Some(vertex) = self.vertices.get_mut(boundary_vertex_id) {
52                vertex.outgoing_halfedge = Some(boundary_he_id);
53            } else {
54                error!("Vertex not found");
55            }
56        }
57    }
58}
mesh_graph/ops/cleanup/edge_boundary.rs

mesh_graph/ops/cleanup/
edge_boundary.rs
