44 lines
1.6 KiB
Rust
44 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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#[test]
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fn test_invert() {
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let v = Vector3::new(1.0f64, 2.0f64, 3.0f64);
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let t = Decomposed {
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scale: 1.5f64,
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rot: Quaternion::new(0.5f64,0.5,0.5,0.5),
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disp: Vector3::new(6.0f64,-7.0f64,8.0)
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};
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let ti = t.invert().expect("Expected successful inversion");
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let vt = t.transform_vector( &v );
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assert!(v.approx_eq( &ti.transform_vector( &vt ) ));
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}
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#[test]
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fn test_look_at() {
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let eye = Point3::new(0.0f64, 0.0f64, -5.0f64);
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let center = Point3::new(0.0f64, 0.0f64, 0.0f64);
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let up = Vector3::new(1.0f64, 0.0f64, 0.0f64);
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let t: Decomposed<f64,Vector3<f64>,Quaternion<f64>> = Transform::look_at(&eye, ¢er, &up);
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let point = Point3::new(1.0f64, 0.0f64, 0.0f64);
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let view_point = Point3::new(0.0f64, 1.0f64, 5.0f64);
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assert!( t.transform_point(&point).approx_eq(&view_point) );
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}
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