anput-physics 0.19.0

Physics plugin for Anput ECS
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50

use crate::{
    Scalar,
    components::BodyAccessInfo,
    density_fields::{DensityField, DensityFieldBox, DensityRange},
};
use vek::{Aabb, Vec3};

pub struct MultiplicationDensityField {
    pub fields: Vec<DensityFieldBox>,
}

impl DensityField for MultiplicationDensityField {
    fn aabb(&self, info: &BodyAccessInfo) -> Aabb<Scalar> {
        self.fields
            .iter()
            .map(|field| field.aabb(info))
            .reduce(|accum, aabb| accum.intersection(aabb))
            .unwrap_or_default()
    }

    fn density_at_point(&self, point: Vec3<Scalar>, info: &BodyAccessInfo) -> Scalar {
        self.fields
            .iter()
            .map(|field| field.density_at_point(point, info))
            .reduce(|accum, normal| accum * normal)
            .unwrap_or_default()
    }

    fn density_at_region(&self, region: Aabb<Scalar>, info: &BodyAccessInfo) -> DensityRange {
        self.fields
            .iter()
            .map(|field| field.density_at_region(region, info))
            .reduce(|accum, range| accum * range)
            .unwrap_or_default()
    }

    fn normal_at_point(
        &self,
        point: Vec3<Scalar>,
        resolution: Vec3<Scalar>,
        info: &BodyAccessInfo,
    ) -> Vec3<Scalar> {
        self.fields
            .iter()
            .map(|field| field.normal_at_point(point, resolution, info))
            .reduce(|accum, normal| accum * normal)
            .and_then(|normal| normal.try_normalized())
            .unwrap_or_default()
    }
}