183 lines
7.4 KiB
Rust
183 lines
7.4 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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#[macro_use]
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extern crate cgmath;
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use cgmath::*;
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use std::f64;
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use std::num::Float;
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#[test]
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fn test_constructor() {
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assert_eq!(vec2(1f32, 2f32), Vector2::new(1f32, 2f32));
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assert_eq!(vec3(1f64, 2f64, 3f64), Vector3::new(1f64, 2f64, 3f64));
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assert_eq!(vec4(1is, 2is, 3is, 4is), Vector4::new(1is, 2is, 3is, 4is));
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}
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#[test]
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fn test_from_value() {
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assert_eq!(Vector2::from_value(102i), Vector2::new(102i, 102i));
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assert_eq!(Vector3::from_value(22i), Vector3::new(22i, 22i, 22i));
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assert_eq!(Vector4::from_value(76.5f64), Vector4::new(76.5f64, 76.5f64, 76.5f64, 76.5f64));
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}
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#[test]
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fn test_dot() {
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assert_eq!(Vector2::new(1i, 2i).dot(&Vector2::new(3i, 4i)), 11i);
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assert_eq!(Vector3::new(1i, 2i, 3i).dot(&Vector3::new(4i, 5i, 6i)), 32i);
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assert_eq!(Vector4::new(1i, 2i, 3i, 4i).dot(&Vector4::new(5i, 6i, 7i, 8i)), 70i);
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}
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#[test]
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fn test_comp_add() {
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assert_eq!(Vector2::new(1i, 2i).comp_add(), 3i);
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assert_eq!(Vector3::new(1i, 2i, 3i).comp_add(), 6i);
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assert_eq!(Vector4::new(1i, 2i, 3i, 4i).comp_add(), 10i);
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assert_eq!(Vector2::new(3.0f64, 4.0f64).comp_add(), 7.0f64);
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assert_eq!(Vector3::new(4.0f64, 5.0f64, 6.0f64).comp_add(), 15.0f64);
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assert_eq!(Vector4::new(5.0f64, 6.0f64, 7.0f64, 8.0f64).comp_add(), 26.0f64);
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}
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#[test]
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fn test_comp_mul() {
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assert_eq!(Vector2::new(1i, 2i).comp_mul(), 2i);
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assert_eq!(Vector3::new(1i, 2i, 3i).comp_mul(), 6i);
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assert_eq!(Vector4::new(1i, 2i, 3i, 4i).comp_mul(), 24i);
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assert_eq!(Vector2::new(3.0f64, 4.0f64).comp_mul(), 12.0f64);
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assert_eq!(Vector3::new(4.0f64, 5.0f64, 6.0f64).comp_mul(), 120.0f64);
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assert_eq!(Vector4::new(5.0f64, 6.0f64, 7.0f64, 8.0f64).comp_mul(), 1680.0f64);
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}
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#[test]
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fn test_comp_min() {
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assert_eq!(Vector2::new(1i, 2i).comp_min(), 1i);
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assert_eq!(Vector3::new(1i, 2i, 3i).comp_min(), 1i);
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assert_eq!(Vector4::new(1i, 2i, 3i, 4i).comp_min(), 1i);
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assert_eq!(Vector2::new(3.0f64, 4.0f64).comp_min(), 3.0f64);
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assert_eq!(Vector3::new(4.0f64, 5.0f64, 6.0f64).comp_min(), 4.0f64);
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assert_eq!(Vector4::new(5.0f64, 6.0f64, 7.0f64, 8.0f64).comp_min(), 5.0f64);
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}
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#[test]
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fn test_comp_max() {
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assert_eq!(Vector2::new(1i, 2i).comp_max(), 2i);
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assert_eq!(Vector3::new(1i, 2i, 3i).comp_max(), 3i);
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assert_eq!(Vector4::new(1i, 2i, 3i, 4i).comp_max(), 4i);
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assert_eq!(Vector2::new(3.0f64, 4.0f64).comp_max(), 4.0f64);
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assert_eq!(Vector3::new(4.0f64, 5.0f64, 6.0f64).comp_max(), 6.0f64);
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assert_eq!(Vector4::new(5.0f64, 6.0f64, 7.0f64, 8.0f64).comp_max(), 8.0f64);
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}
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#[test]
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fn test_cross() {
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let a = Vector3::new(1i, 2i, 3i);
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let b = Vector3::new(4i, 5i, 6i);
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let r = Vector3::new(-3i, 6i, -3i);
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assert_eq!(a.cross(&b), r);
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let mut a = a;
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a.cross_self(&b);
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assert_eq!(a, r);
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}
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#[test]
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fn test_is_perpendicular() {
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assert!(Vector2::new(1.0f64, 0.0f64).is_perpendicular(&Vector2::new(0.0f64, 1.0f64)));
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assert!(Vector3::new(0.0f64, 1.0f64, 0.0f64).is_perpendicular(&Vector3::new(0.0f64, 0.0f64, 1.0f64)));
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assert!(Vector4::new(1.0f64, 0.0f64, 0.0f64, 0.0f64).is_perpendicular(&Vector4::new(0.0f64, 0.0f64, 0.0f64, 1.0f64)));
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}
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#[cfg(test)]
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mod test_length {
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use cgmath::*;
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#[test]
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fn test_vector2(){
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let (a, a_res) = (Vector2::new(3.0f64, 4.0f64), 5.0f64); // (3i, 4i, 5i) Pythagorean triple
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let (b, b_res) = (Vector2::new(5.0f64, 12.0f64), 13.0f64); // (5i, 12i, 13i) Pythagorean triple
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assert_eq!(a.length2(), a_res * a_res);
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assert_eq!(b.length2(), b_res * b_res);
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assert_eq!(a.length(), a_res);
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assert_eq!(b.length(), b_res);
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}
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#[test]
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fn test_vector3(){
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let (a, a_res) = (Vector3::new(2.0f64, 3.0f64, 6.0f64), 7.0f64); // (2i, 3i, 6i, 7i) Pythagorean quadruple
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let (b, b_res) = (Vector3::new(1.0f64, 4.0f64, 8.0f64), 9.0f64); // (1i, 4i, 8i, 9i) Pythagorean quadruple
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assert_eq!(a.length2(), a_res * a_res);
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assert_eq!(b.length2(), b_res * b_res);
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assert_eq!(a.length(), a_res);
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assert_eq!(b.length(), b_res);
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}
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#[test]
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fn test_vector4(){
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let (a, a_res) = (Vector4::new(1.0f64, 2.0f64, 4.0f64, 10.0f64), 11.0f64); // (1i, 2i, 4i, 10i, 11i) Pythagorean quintuple
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let (b, b_res) = (Vector4::new(1.0f64, 2.0f64, 8.0f64, 10.0f64), 13.0f64); // (1i, 2i, 8i, 10i, 13i) Pythagorean quintuple
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assert_eq!(a.length2(), a_res * a_res);
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assert_eq!(b.length2(), b_res * b_res);
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assert_eq!(a.length(), a_res);
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assert_eq!(b.length(), b_res);
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}
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}
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#[test]
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fn test_angle() {
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assert!(Vector2::new(1.0f64, 0.0f64).angle(&Vector2::new(0.0f64, 1.0f64)).approx_eq( &rad(f64::consts::FRAC_PI_2) ));
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assert!(Vector2::new(10.0f64, 0.0f64).angle(&Vector2::new(0.0f64, 5.0f64)).approx_eq( &rad(f64::consts::FRAC_PI_2) ));
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assert!(Vector2::new(-1.0f64, 0.0f64).angle(&Vector2::new(0.0f64, 1.0f64)).approx_eq( &-rad(f64::consts::FRAC_PI_2) ));
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assert!(Vector3::new(1.0f64, 0.0f64, 1.0f64).angle(&Vector3::new(1.0f64, 1.0f64, 0.0f64)).approx_eq( &rad(f64::consts::FRAC_PI_3) ));
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assert!(Vector3::new(10.0f64, 0.0f64, 10.0f64).angle(&Vector3::new(5.0f64, 5.0f64, 0.0f64)).approx_eq( &rad(f64::consts::FRAC_PI_3) ));
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assert!(Vector3::new(-1.0f64, 0.0f64, -1.0f64).angle(&Vector3::new(1.0f64, -1.0f64, 0.0f64)).approx_eq( &rad(2.0f64 * f64::consts::FRAC_PI_3) ));
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assert!(Vector4::new(1.0f64, 0.0f64, 1.0f64, 0.0f64).angle(&Vector4::new(0.0f64, 1.0f64, 0.0f64, 1.0f64)).approx_eq( &rad(f64::consts::FRAC_PI_2) ));
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assert!(Vector4::new(10.0f64, 0.0f64, 10.0f64, 0.0f64).angle(&Vector4::new(0.0f64, 5.0f64, 0.0f64, 5.0f64)).approx_eq( &rad(f64::consts::FRAC_PI_2) ));
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assert!(Vector4::new(-1.0f64, 0.0f64, -1.0f64, 0.0f64).angle(&Vector4::new(0.0f64, 1.0f64, 0.0f64, 1.0f64)).approx_eq( &rad(f64::consts::FRAC_PI_2) ));
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}
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#[test]
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fn test_normalize() {
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// TODO: test normalize_to, normalize_sel.0, and normalize_self_to
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assert!(Vector2::new(3.0f64, 4.0f64).normalize().approx_eq( &Vector2::new(3.0/5.0, 4.0/5.0) ));
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assert!(Vector3::new(2.0f64, 3.0f64, 6.0f64).normalize().approx_eq( &Vector3::new(2.0/7.0, 3.0/7.0, 6.0/7.0) ));
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assert!(Vector4::new(1.0f64, 2.0f64, 4.0f64, 10.0f64).normalize().approx_eq( &Vector4::new(1.0/11.0, 2.0/11.0, 4.0/11.0, 10.0/11.0) ));
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}
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#[test]
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fn test_map() {
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assert_eq!(Vector3::new(7.12f64, 3.8f64, -6.98f64).map(|x| x.floor()), Vector3::new(7.0f64, 3.0f64, -7.0f64));
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assert_eq!(Vector3::new(7.12f64, 3.8f64, -6.98f64).map(|x| x.max(0.0f64)), Vector3::new(7.12f64, 3.8f64, 0.0f64));
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}
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#[test]
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fn test_cast() {
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assert_approx_eq!(Vector2::new(0.9f64, 1.5).cast(), Vector2::new(0.9f32, 1.5));
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assert_approx_eq!(Vector3::new(1.0f64, 2.4, -3.13).cast(), Vector3::new(1.0f32, 2.4, -3.13));
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assert_approx_eq!(Vector4::new(13.5f64, -4.6, -8.3, 2.41).cast(), Vector4::new(13.5f32, -4.6, -8.3, 2.41));
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}
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