34 lines
1.6 KiB
Rust
34 lines
1.6 KiB
Rust
// Copyright 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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use std::num::FloatMath;
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#[test]
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fn test_intersection() {
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let sphere = Sphere {center: Point3::new(0f64,0f64,0f64), radius: 1f64};
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let r0 = Ray::new(Point3::new(0f64, 0f64, 5f64), Vector3::new(0f64, 0f64, -5f64).normalize());
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let r1 = Ray::new(Point3::new(1f64.cos(), 0f64, 5f64), Vector3::new(0f64, 0f64, -5f64).normalize());
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let r2 = Ray::new(Point3::new(1f64, 0f64, 5f64), Vector3::new(0f64, 0f64, -5f64).normalize());
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let r3 = Ray::new(Point3::new(2f64, 0f64, 5f64), Vector3::new(0f64, 0f64, -5f64).normalize());
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assert_eq!((sphere,r0).intersection(), Some(Point3::new(0f64, 0f64, 1f64)));
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assert!((sphere,r1).intersection().unwrap().approx_eq( &Point3::new(1f64.cos(), 0f64, 1f64.sin()) ));
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assert_eq!((sphere,r2).intersection(), Some(Point3::new(1f64, 0f64, 0f64)));
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assert_eq!((sphere,r3).intersection(), None);
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}
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