anput_physics/density_fields/
subtraction.rs

1use crate::{
2    Scalar,
3    components::BodyAccessInfo,
4    density_fields::{DensityField, DensityFieldBox, DensityRange},
5};
6use vek::{Aabb, Vec3};
7
8pub struct SubtractionDensityField {
9    pub fields: Vec<DensityFieldBox>,
10}
11
12impl DensityField for SubtractionDensityField {
13    fn aabb(&self, info: &BodyAccessInfo) -> Aabb<Scalar> {
14        self.fields
15            .iter()
16            .map(|field| field.aabb(info))
17            .reduce(|accum, aabb| accum.union(aabb))
18            .unwrap_or_default()
19    }
20
21    fn density_at_point(&self, point: Vec3<Scalar>, info: &BodyAccessInfo) -> Scalar {
22        self.fields
23            .iter()
24            .map(|field| field.density_at_point(point, info))
25            .reduce(|accum, normal| accum - normal)
26            .unwrap_or_default()
27    }
28
29    fn density_at_region(&self, region: Aabb<Scalar>, info: &BodyAccessInfo) -> DensityRange {
30        self.fields
31            .iter()
32            .map(|field| field.density_at_region(region, info))
33            .reduce(|accum, range| accum - range)
34            .unwrap_or_default()
35    }
36
37    fn normal_at_point(
38        &self,
39        point: Vec3<Scalar>,
40        resolution: Vec3<Scalar>,
41        info: &BodyAccessInfo,
42    ) -> Vec3<Scalar> {
43        self.fields
44            .iter()
45            .map(|field| field.normal_at_point(point, resolution, info))
46            .reduce(|accum, normal| accum - normal)
47            .and_then(|normal| normal.try_normalized())
48            .unwrap_or_default()
49    }
50}
anput_physics/density_fields/subtraction.rs

anput_physics/density_fields/
subtraction.rs
