47 lines
2 KiB
Rust
47 lines
2 KiB
Rust
// Copyright 2013-2014 The CGMath Developers. For a full listing of the authors,
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// refer to the AUTHORS file at the top-level directory of this distribution.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#![feature(globs)]
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extern crate cgmath;
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use cgmath::*;
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#[test]
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fn test_from_points() {
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assert_eq!(Plane::from_points(Point3::new(5.0f64, 0.0f64, 5.0f64),
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Point3::new(5.0f64, 5.0f64, 5.0f64),
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Point3::new(5.0f64, 0.0f64, -1.0f64)),
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Some(Plane::from_abcd(-1.0f64, 0.0f64, 0.0f64, 5.0f64)));
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assert_eq!(Plane::from_points(Point3::new(0.0f64, 5.0f64, -5.0f64),
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Point3::new(0.0f64, 5.0f64, 0.0f64),
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Point3::new(0.0f64, 5.0f64, 5.0f64)),
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None); // The points are parallel
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}
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#[test]
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fn test_ray_intersection() {
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let p0 = Plane::from_abcd(1f64, 0f64, 0f64, -7f64);
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let r0: Ray3<f64> = Ray::new(Point3::new(2f64, 3f64, 4f64), Vector3::new(1f64, 1f64, 1f64).normalize());
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assert_eq!((p0, r0).intersection(), Some(Point3::new(7f64, 8f64, 9f64)));
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let p1 = Plane::from_points(Point3::new(5f64, 0f64, 5f64),
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Point3::new(5f64, 5f64, 5f64),
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Point3::new(5f64, 0f64, -1f64)).unwrap();
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let r1: Ray3<f64> = Ray::new(Point3::new(0f64, 0f64, 0f64), Vector3::new(-1f64, 0f64, 0f64).normalize());
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assert_eq!((p1, r1).intersection(), None); // r1 points away from p1
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}
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