parry2d/transformation/to_polyline/
heightfield_to_polyline.rs

1use crate::math::Vector2;
2use crate::shape::HeightField;
3use alloc::{vec, vec::Vec};
4
5impl HeightField {
6    /// Rasterize this heightfield as a (potentially discontinuous) polyline.
7    pub fn to_polyline(&self) -> (Vec<Vector2>, Vec<[u32; 2]>) {
8        let mut vertices = vec![];
9        let mut indices = vec![];
10
11        for seg in self.segments() {
12            let base_id = vertices.len() as u32;
13            if vertices.last().map(|pt| seg.a != *pt).unwrap_or(true) {
14                indices.push([base_id, base_id + 1]);
15                vertices.push(seg.a);
16            } else {
17                indices.push([base_id - 1, base_id]);
18            }
19
20            vertices.push(seg.b);
21        }
22
23        (vertices, indices)
24    }
25}