mirror of
https://github.com/bevyengine/bevy
synced 2024-12-04 02:19:15 +00:00
253 lines
7.9 KiB
Rust
253 lines
7.9 KiB
Rust
mod support;
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use glam::f32::*;
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use support::deg;
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const IDENTITY: [[f32; 3]; 3] = [[1.0, 0.0, 0.0], [0.0, 1.0, 0.0], [0.0, 0.0, 1.0]];
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const MATRIX: [[f32; 3]; 3] = [[1.0, 2.0, 3.0], [4.0, 5.0, 6.0], [7.0, 8.0, 9.0]];
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const ZERO: [[f32; 3]; 3] = [[0.0; 3]; 3];
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#[test]
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fn test_mat3_align() {
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use std::mem;
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if cfg!(any(feature = "packed-vec3", feature = "scalar-math")) {
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assert_eq!(36, mem::size_of::<Mat3>());
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assert_eq!(4, mem::align_of::<Mat3>());
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} else {
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assert_eq!(48, mem::size_of::<Mat3>());
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assert_eq!(16, mem::align_of::<Mat3>());
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}
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}
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#[test]
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fn test_mat3_identity() {
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let identity = Mat3::identity();
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assert_eq!(IDENTITY, identity.to_cols_array_2d());
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assert_eq!(Mat3::from_cols_array_2d(&IDENTITY), identity);
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assert_eq!(identity, identity * identity);
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assert_eq!(identity, Mat3::default());
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}
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#[test]
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fn test_mat3_zero() {
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assert_eq!(Mat3::from_cols_array_2d(&ZERO), Mat3::zero());
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}
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#[test]
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fn test_mat3_accessors() {
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let mut m = Mat3::zero();
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m.set_x_axis(Vec3::new(1.0, 2.0, 3.0));
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m.set_y_axis(Vec3::new(4.0, 5.0, 6.0));
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m.set_z_axis(Vec3::new(7.0, 8.0, 9.0));
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assert_eq!(Mat3::from_cols_array_2d(&MATRIX), m);
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assert_eq!(Vec3::new(1.0, 2.0, 3.0), m.x_axis());
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assert_eq!(Vec3::new(4.0, 5.0, 6.0), m.y_axis());
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assert_eq!(Vec3::new(7.0, 8.0, 9.0), m.z_axis());
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}
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#[test]
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fn test_mat3_from_axes() {
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let a = Mat3::from_cols_array_2d(&[[1.0, 2.0, 3.0], [4.0, 5.0, 6.0], [7.0, 8.0, 9.0]]);
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assert_eq!(MATRIX, a.to_cols_array_2d());
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let b = Mat3::from_cols(
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vec3(1.0, 2.0, 3.0),
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vec3(4.0, 5.0, 6.0),
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vec3(7.0, 8.0, 9.0),
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);
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assert_eq!(a, b);
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let c = mat3(
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vec3(1.0, 2.0, 3.0),
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vec3(4.0, 5.0, 6.0),
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vec3(7.0, 8.0, 9.0),
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);
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assert_eq!(a, c);
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let d = b.to_cols_array();
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let f = Mat3::from_cols_array(&d);
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assert_eq!(b, f);
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}
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#[test]
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fn test_from_rotation() {
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let rot_x1 = Mat3::from_rotation_x(deg(180.0));
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let rot_x2 = Mat3::from_axis_angle(Vec3::unit_x(), deg(180.0));
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assert_approx_eq!(rot_x1, rot_x2);
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let rot_y1 = Mat3::from_rotation_y(deg(180.0));
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let rot_y2 = Mat3::from_axis_angle(Vec3::unit_y(), deg(180.0));
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assert_approx_eq!(rot_y1, rot_y2);
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let rot_z1 = Mat3::from_rotation_z(deg(180.0));
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let rot_z2 = Mat3::from_axis_angle(Vec3::unit_z(), deg(180.0));
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assert_approx_eq!(rot_z1, rot_z2);
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}
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#[test]
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fn test_mat3_mul() {
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let mat_a = Mat3::from_axis_angle(Vec3::unit_z(), deg(90.0));
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let result3 = mat_a * Vec3::unit_y();
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assert_approx_eq!(vec3(-1.0, 0.0, 0.0), result3);
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}
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#[test]
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fn test_mat3_transform2d() {
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let mat_b = Mat3::from_scale_angle_translation(
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Vec2::new(0.5, 1.5),
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f32::to_radians(90.0),
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Vec2::new(1.0, 2.0),
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);
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let result2 = mat_b.transform_vector2(Vec2::unit_y());
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assert_approx_eq!(vec2(-1.5, 0.0), result2, 1.0e-6);
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assert_approx_eq!(result2, (mat_b * Vec2::unit_y().extend(0.0)).truncate());
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let result2 = mat_b.transform_point2(Vec2::unit_y());
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assert_approx_eq!(vec2(-0.5, 2.0), result2, 1.0e-6);
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assert_approx_eq!(result2, (mat_b * Vec2::unit_y().extend(1.0)).truncate());
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}
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#[test]
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fn test_from_ypr() {
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let zero = deg(0.0);
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let yaw = deg(30.0);
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let pitch = deg(60.0);
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let roll = deg(90.0);
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let y0 = Mat3::from_rotation_y(yaw);
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let y1 = Mat3::from_rotation_ypr(yaw, zero, zero);
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assert_approx_eq!(y0, y1);
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let x0 = Mat3::from_rotation_x(pitch);
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let x1 = Mat3::from_rotation_ypr(zero, pitch, zero);
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assert_approx_eq!(x0, x1);
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let z0 = Mat3::from_rotation_z(roll);
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let z1 = Mat3::from_rotation_ypr(zero, zero, roll);
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assert_approx_eq!(z0, z1);
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let yx0 = y0 * x0;
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let yx1 = Mat3::from_rotation_ypr(yaw, pitch, zero);
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assert_approx_eq!(yx0, yx1);
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let yxz0 = y0 * x0 * z0;
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let yxz1 = Mat3::from_rotation_ypr(yaw, pitch, roll);
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assert_approx_eq!(yxz0, yxz1, 1e-6);
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}
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#[test]
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fn test_from_scale() {
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let m = Mat3::from_scale(Vec3::new(2.0, 4.0, 8.0));
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assert_approx_eq!(m * Vec3::new(1.0, 1.0, 1.0), Vec3::new(2.0, 4.0, 8.0));
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assert_approx_eq!(Vec3::unit_x() * 2.0, m.x_axis());
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assert_approx_eq!(Vec3::unit_y() * 4.0, m.y_axis());
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assert_approx_eq!(Vec3::unit_z() * 8.0, m.z_axis());
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}
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#[test]
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fn test_mat3_transpose() {
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let m = mat3(
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vec3(1.0, 2.0, 3.0),
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vec3(4.0, 5.0, 6.0),
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vec3(7.0, 8.0, 9.0),
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);
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let mt = m.transpose();
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assert_eq!(mt.x_axis(), vec3(1.0, 4.0, 7.0));
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assert_eq!(mt.y_axis(), vec3(2.0, 5.0, 8.0));
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assert_eq!(mt.z_axis(), vec3(3.0, 6.0, 9.0));
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}
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#[test]
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fn test_mat3_det() {
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assert_eq!(0.0, Mat3::zero().determinant());
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assert_eq!(1.0, Mat3::identity().determinant());
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assert_eq!(1.0, Mat3::from_rotation_x(deg(90.0)).determinant());
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assert_eq!(1.0, Mat3::from_rotation_y(deg(180.0)).determinant());
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assert_eq!(1.0, Mat3::from_rotation_z(deg(270.0)).determinant());
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assert_eq!(
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2.0 * 2.0 * 2.0,
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Mat3::from_scale(vec3(2.0, 2.0, 2.0)).determinant()
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);
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}
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#[test]
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fn test_mat3_inverse() {
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// assert_eq!(None, Mat3::zero().inverse());
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let inv = Mat3::identity().inverse();
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// assert_ne!(None, inv);
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assert_approx_eq!(Mat3::identity(), inv);
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let rotz = Mat3::from_rotation_z(deg(90.0));
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let rotz_inv = rotz.inverse();
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// assert_ne!(None, rotz_inv);
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// let rotz_inv = rotz_inv.unwrap();
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assert_approx_eq!(Mat3::identity(), rotz * rotz_inv);
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assert_approx_eq!(Mat3::identity(), rotz_inv * rotz);
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let scale = Mat3::from_scale(vec3(4.0, 5.0, 6.0));
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let scale_inv = scale.inverse();
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// assert_ne!(None, scale_inv);
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// let scale_inv = scale_inv.unwrap();
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assert_approx_eq!(Mat3::identity(), scale * scale_inv);
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assert_approx_eq!(Mat3::identity(), scale_inv * scale);
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let m = scale * rotz;
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let m_inv = m.inverse();
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// assert_ne!(None, m_inv);
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// let m_inv = m_inv.unwrap();
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assert_approx_eq!(Mat3::identity(), m * m_inv);
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assert_approx_eq!(Mat3::identity(), m_inv * m);
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assert_approx_eq!(m_inv, rotz_inv * scale_inv);
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}
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#[test]
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fn test_mat3_ops() {
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let m0 = Mat3::from_cols_array_2d(&MATRIX);
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let m0x2 = Mat3::from_cols_array_2d(&[[2.0, 4.0, 6.0], [8.0, 10.0, 12.0], [14.0, 16.0, 18.0]]);
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assert_eq!(m0x2, m0 * 2.0);
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assert_eq!(m0x2, 2.0 * m0);
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assert_eq!(m0x2, m0 + m0);
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assert_eq!(Mat3::zero(), m0 - m0);
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assert_approx_eq!(m0, m0 * Mat3::identity());
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assert_approx_eq!(m0, Mat3::identity() * m0);
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}
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#[test]
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fn test_mat3_fmt() {
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let a = Mat3::from_cols_array_2d(&MATRIX);
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assert_eq!(format!("{}", a), "[[1, 2, 3], [4, 5, 6], [7, 8, 9]]");
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}
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#[cfg(feature = "serde")]
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#[test]
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fn test_mat3_serde() {
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let a = Mat3::from_cols(
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vec3(1.0, 2.0, 3.0),
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vec3(4.0, 5.0, 6.0),
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vec3(7.0, 8.0, 9.0),
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);
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let serialized = serde_json::to_string(&a).unwrap();
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assert_eq!(serialized, "[1.0,2.0,3.0,4.0,5.0,6.0,7.0,8.0,9.0]");
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let deserialized = serde_json::from_str(&serialized).unwrap();
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assert_eq!(a, deserialized);
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let deserialized = serde_json::from_str::<Mat3>("[]");
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assert!(deserialized.is_err());
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let deserialized = serde_json::from_str::<Mat3>("[1.0]");
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assert!(deserialized.is_err());
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let deserialized = serde_json::from_str::<Mat3>("[1.0,2.0]");
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assert!(deserialized.is_err());
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let deserialized = serde_json::from_str::<Mat3>("[1.0,2.0,3.0]");
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assert!(deserialized.is_err());
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let deserialized = serde_json::from_str::<Mat3>("[1.0,2.0,3.0,4.0,5.0]");
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assert!(deserialized.is_err());
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let deserialized = serde_json::from_str::<Mat3>("[[1.0,2.0,3.0],[4.0,5.0,6.0],[7.0,8.0,9.0]]");
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assert!(deserialized.is_err());
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}
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#[cfg(feature = "rand")]
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#[test]
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fn test_mat3_rand() {
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use rand::{Rng, SeedableRng};
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use rand_xoshiro::Xoshiro256Plus;
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let mut rng1 = Xoshiro256Plus::seed_from_u64(0);
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let a = Mat3::from_cols_array(&rng1.gen::<[f32; 9]>());
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let mut rng2 = Xoshiro256Plus::seed_from_u64(0);
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let b = rng2.gen::<Mat3>();
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assert_eq!(a, b);
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}
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