rust_3d/
sphere.rs

1/*
2Copyright 2017 Martin Buck
3
4Permission is hereby granted, free of charge, to any person obtaining a copy
5of this software and associated documentation files (the "Software"),
6to deal in the Software without restriction, including without limitation the
7rights to use, copy, modify, merge, publish, distribute, sublicense,
8and/or sell copies of the Software, and to permit persons to whom the Software
9is furnished to do so, subject to the following conditions:
10
11The above copyright notice and this permission notice shall
12be included all copies or substantial portions of the Software.
13
14THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
15EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
16MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
17IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
18DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
19TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
20OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
21*/
22
23//! Sphere, a sphere in 3D space
24
25use std::cmp::{Eq, Ordering};
26
27use crate::*;
28
29//------------------------------------------------------------------------------
30
31#[derive(Debug, PartialEq, PartialOrd, Clone, Hash, Default)]
32/// Sphere, a sphere in 3D space
33pub struct Sphere {
34    pub center: Point3D,
35    pub radius: Positive,
36}
37
38impl Eq for Sphere {}
39
40impl Ord for Sphere {
41    fn cmp(&self, other: &Self) -> Ordering {
42        let origin = Point3D::default();
43        match sqr_dist_3d(&origin, &self.center).partial_cmp(&sqr_dist_3d(&origin, &other.center)) {
44            Some(x) => x,
45            None => self
46                .radius
47                .partial_cmp(&other.radius)
48                .unwrap_or(Ordering::Equal),
49        }
50    }
51}
52
53impl IsND for Sphere {
54    fn n_dimensions() -> usize {
55        Point3D::n_dimensions()
56    }
57
58    fn position_nd(&self, dimension: usize) -> Result<f64> {
59        self.center.position_nd(dimension)
60    }
61}
62
63impl Is3D for Sphere {
64    #[inline(always)]
65    fn x(&self) -> f64 {
66        self.center.x()
67    }
68
69    #[inline(always)]
70    fn y(&self) -> f64 {
71        self.center.y()
72    }
73
74    #[inline(always)]
75    fn z(&self) -> f64 {
76        self.center.y()
77    }
78}
79
80impl IsBuildableND for Sphere {
81    #[inline(always)]
82    fn new_nd(coords: &[f64]) -> Result<Self> {
83        Ok(Sphere {
84            center: Point3D::new_nd(coords)?,
85            radius: Positive::one(),
86        })
87    }
88
89    #[inline(always)]
90    fn from_nd<P>(&mut self, other: P) -> Result<()>
91    where
92        P: IsBuildableND,
93    {
94        self.center.from_nd(other)
95    }
96}
97
98impl IsBuildable3D for Sphere {
99    #[inline(always)]
100    fn new(x: f64, y: f64, z: f64) -> Self {
101        Sphere {
102            center: Point3D { x, y, z },
103            radius: Positive::one(),
104        }
105    }
106
107    #[inline(always)]
108    fn from<P>(&mut self, other: &P)
109    where
110        P: Is3D,
111    {
112        self.center.from(other)
113    }
114}
115
116impl IsEditableND for Sphere {
117    fn set_position(&mut self, dimension: usize, val: f64) -> Result<()> {
118        self.center.set_position(dimension, val)
119    }
120}
121
122impl IsEditable3D for Sphere {
123    #[inline(always)]
124    fn set_x(&mut self, val: f64) {
125        self.center.set_x(val);
126    }
127
128    #[inline(always)]
129    fn set_y(&mut self, val: f64) {
130        self.center.set_y(val);
131    }
132
133    #[inline(always)]
134    fn set_z(&mut self, val: f64) {
135        self.center.set_z(val);
136    }
137}
138
139impl HasBoundingBox3D for Sphere {
140    fn bounding_box(&self) -> BoundingBox3D {
141        let p_min = Point3D {
142            x: self.center.x() - self.radius.get(),
143            y: self.center.y() - self.radius.get(),
144            z: self.center.z() - self.radius.get(),
145        };
146        let p_max = Point3D {
147            x: self.center.x() + self.radius.get(),
148            y: self.center.y() + self.radius.get(),
149            z: self.center.z() + self.radius.get(),
150        };
151        BoundingBox3D::new(&p_min, &p_max).unwrap() // safe
152    }
153}
154
155impl HasBoundingBox3DMaybe for Sphere {
156    fn bounding_box_maybe(&self) -> Result<BoundingBox3D> {
157        Ok(self.bounding_box())
158    }
159}
160
161impl IsScalable for Sphere {
162    fn scale(&mut self, factor: Positive) {
163        self.radius *= factor;
164    }
165}
rust_3d/sphere.rs

rust_3d/
sphere.rs
