dumbmath/
aabb.rs

1// Copyright 2015 Nicholas Bishop
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//     http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15use std::f32;
16use vec3f::Vec3f;
17
18pub struct Aabb3f {
19    pub min: Vec3f,
20    pub max: Vec3f
21}
22
23impl Aabb3f {
24    /// Create an empty Aabb3f with min initialized to +infinity and
25    /// max is initialized to -infinity.
26    pub fn new() -> Aabb3f {
27        Aabb3f {
28            min: Vec3f::from_scalar(f32::INFINITY),
29            max: Vec3f::from_scalar(f32::NEG_INFINITY)
30        }
31    }
32
33    pub fn from_point(point: Vec3f) -> Aabb3f {
34        Aabb3f {
35            min: point,
36            max: point
37        }
38    }
39
40    /// True if the point intersects the box
41    pub fn contains_point(&self, point: Vec3f) -> bool {
42        (self.min.x <= point.x &&
43         self.min.y <= point.y &&
44         self.min.z <= point.z &&
45
46         self.max.x >= point.x &&
47         self.max.y >= point.y &&
48         self.max.z >= point.z)
49    }
50}
51
52#[test]
53fn test_aabb3f_contains_point() {
54    use vec3f::ZERO_3F;
55    assert!(!Aabb3f::new().contains_point(ZERO_3F));
56    assert!(Aabb3f::from_point(ZERO_3F).contains_point(ZERO_3F));
57}
dumbmath/aabb.rs

dumbmath/
aabb.rs
