Move tests into source files

src/lmath.rs

@@ -23,17 +23,8 @@
 #[license = "ASL2"];
 #[crate_type = "lib"];
 
-extern mod std;
-
 pub mod mat;
 pub mod quat;
 pub mod vec;
 
 pub mod projection;
-
-#[cfg(test)]
-mod test {
-    #[path = "test_mat.rs" ] mod mat;
-    #[path = "test_quat.rs"] mod quat;
-    #[path = "test_vec.rs" ] mod vec;
-}

src/mat2.rs

@@ -377,3 +377,172 @@ impl<T:Copy + Eq + ApproxEq<T>> ApproxEq<T> for Mat2<T> {
         self.col(1).approx_eq_eps(other.col(1), epsilon)
     }
 }
+
+#[cfg(test)]
+mod tests{
+    use mat::*;
+    use vec::*;
+
+    #[test]
+    fn test_mat2() {
+        let a = Mat2 { x: Vec2 { x: 1.0, y: 3.0 },
+                       y: Vec2 { x: 2.0, y: 4.0 } };
+        let b = Mat2 { x: Vec2 { x: 2.0, y: 4.0 },
+                       y: Vec2 { x: 3.0, y: 5.0 } };
+
+        let v1 = Vec2::new::<float>(1.0, 2.0);
+        let f1 = 0.5;
+
+        assert_eq!(a, Mat2::new::<float>(1.0, 3.0,
+                                         2.0, 4.0));
+
+        assert_eq!(a, Mat2::from_cols::<float>(Vec2::new::<float>(1.0, 3.0),
+                                               Vec2::new::<float>(2.0, 4.0)));
+
+        assert_eq!(Mat2::from_value::<float>(4.0),
+                   Mat2::new::<float>(4.0, 0.0,
+                                      0.0, 4.0));
+
+        assert_eq!(*a.col(0), Vec2::new::<float>(1.0, 3.0));
+        assert_eq!(*a.col(1), Vec2::new::<float>(2.0, 4.0));
+
+        assert_eq!(a.row(0), Vec2::new::<float>(1.0, 2.0));
+        assert_eq!(a.row(1), Vec2::new::<float>(3.0, 4.0));
+
+        assert_eq!(*a.col(0), Vec2::new::<float>(1.0, 3.0));
+        assert_eq!(*a.col(1), Vec2::new::<float>(2.0, 4.0));
+
+        assert_eq!(Mat2::identity::<float>(),
+                   Mat2::new::<float>(1.0, 0.0,
+                                      0.0, 1.0));
+
+        assert_eq!(Mat2::zero::<float>(),
+                   Mat2::new::<float>(0.0, 0.0,
+                                      0.0, 0.0));
+
+        assert_eq!(a.determinant(), -2.0);
+        assert_eq!(a.trace(), 5.0);
+
+        assert_eq!(a.neg(),
+                   Mat2::new::<float>(-1.0, -3.0,
+                                      -2.0, -4.0));
+        assert_eq!(-a, a.neg());
+        assert_eq!(a.mul_t(f1),
+                   Mat2::new::<float>(0.5, 1.5,
+                                      1.0, 2.0));
+        assert_eq!(a.mul_v(&v1), Vec2::new::<float>(5.0, 11.0));
+        assert_eq!(a.add_m(&b),
+                   Mat2::new::<float>(3.0, 7.0,
+                                      5.0, 9.0));
+        assert_eq!(a.sub_m(&b),
+                   Mat2::new::<float>(-1.0, -1.0,
+                                      -1.0, -1.0));
+        assert_eq!(a.mul_m(&b),
+                   Mat2::new::<float>(10.0, 22.0,
+                                      13.0, 29.0));
+        assert_eq!(a.dot(&b), 40.0);
+
+        assert_eq!(a.transpose(),
+                   Mat2::new::<float>(1.0, 2.0,
+                                      3.0, 4.0));
+
+        assert_eq!(a.inverse().unwrap(),
+                   Mat2::new::<float>(-2.0,  1.5,
+                                      1.0, -0.5));
+
+        assert!(Mat2::new::<float>(0.0, 2.0,
+                                   0.0, 5.0).inverse().is_none());
+
+        let ident = Mat2::identity::<float>();
+
+        assert!(ident.is_identity());
+        assert!(ident.is_symmetric());
+        assert!(ident.is_diagonal());
+        assert!(!ident.is_rotated());
+        assert!(ident.is_invertible());
+
+        assert!(!a.is_identity());
+        assert!(!a.is_symmetric());
+        assert!(!a.is_diagonal());
+        assert!(a.is_rotated());
+        assert!(a.is_invertible());
+
+        let c = Mat2::new::<float>(2.0, 1.0,
+                                   1.0, 2.0);
+        assert!(!c.is_identity());
+        assert!(c.is_symmetric());
+        assert!(!c.is_diagonal());
+        assert!(c.is_rotated());
+        assert!(c.is_invertible());
+
+        assert!(Mat2::from_value::<float>(6.0).is_diagonal());
+
+        assert_eq!(a.to_mat3(),
+                   Mat3::new::<float>(1.0, 3.0, 0.0,
+                                      2.0, 4.0, 0.0,
+                                      0.0, 0.0, 1.0));
+
+        assert_eq!(a.to_mat4(),
+                   Mat4::new::<float>(1.0, 3.0, 0.0, 0.0,
+                                      2.0, 4.0, 0.0, 0.0,
+                                      0.0, 0.0, 1.0, 0.0,
+                                      0.0, 0.0, 0.0, 1.0));
+    }
+
+    fn test_mat2_mut() {
+        let a = Mat2 { x: Vec2 { x: 1.0, y: 3.0 },
+                       y: Vec2 { x: 2.0, y: 4.0 } };
+        let b = Mat2 { x: Vec2 { x: 2.0, y: 4.0 },
+                       y: Vec2 { x: 3.0, y: 5.0 } };
+
+        let f1 = 0.5;
+
+        let mut mut_a = a;
+
+        mut_a.swap_cols(0, 1);
+        assert_eq!(mut_a.col(0), a.col(1));
+        assert_eq!(mut_a.col(1), a.col(0));
+        mut_a = a;
+
+        mut_a.swap_rows(0, 1);
+        assert_eq!(mut_a.row(0), a.row(1));
+        assert_eq!(mut_a.row(1), a.row(0));
+        mut_a = a;
+
+        mut_a.to_identity();
+        assert!(mut_a.is_identity());
+        mut_a = a;
+
+        mut_a.to_zero();
+        assert_eq!(mut_a, Mat2::zero::<float>());
+        mut_a = a;
+
+        mut_a.mul_self_t(f1);
+        assert_eq!(mut_a, a.mul_t(f1));
+        mut_a = a;
+
+        mut_a.add_self_m(&b);
+        assert_eq!(mut_a, a.add_m(&b));
+        mut_a = a;
+
+        mut_a.sub_self_m(&b);
+        assert_eq!(mut_a, a.sub_m(&b));
+        mut_a = a;
+
+        mut_a.invert_self();
+        assert_eq!(mut_a, a.inverse().unwrap());
+        mut_a = a;
+
+        mut_a.transpose_self();
+        assert_eq!(mut_a, a.transpose());
+        // mut_a = a;
+    }
+
+    #[test]
+    fn test_mat2_approx_eq() {
+        assert!(!Mat2::new::<float>(0.000001, 0.000001,
+                           0.000001, 0.000001).approx_eq(&Mat2::zero::<float>()));
+        assert!(Mat2::new::<float>(0.0000001, 0.0000001,
+                          0.0000001, 0.0000001).approx_eq(&Mat2::zero::<float>()));
+    }
+}

src/mat3.rs

@@ -548,3 +548,207 @@ impl<T:Copy + Eq + ApproxEq<T>> ApproxEq<T> for Mat3<T> {
         self.col(2).approx_eq_eps(other.col(2), epsilon)
     }
 }
+
+#[cfg(test)]
+mod tests{
+    use mat::*;
+    use vec::*;
+
+    #[test]
+    fn test_mat3() {
+        let a = Mat3 { x: Vec3 { x: 1.0, y: 4.0, z:  7.0 },
+                       y: Vec3 { x: 2.0, y: 5.0, z:  8.0 },
+                       z: Vec3 { x: 3.0, y: 6.0, z:  9.0 } };
+        let b = Mat3 { x: Vec3 { x: 2.0, y: 5.0, z:  8.0 },
+                       y: Vec3 { x: 3.0, y: 6.0, z:  9.0 },
+                       z: Vec3 { x: 4.0, y: 7.0, z: 10.0 } };
+
+        let v1 = Vec3::new::<float>(1.0, 2.0, 3.0);
+        let f1 = 0.5;
+
+        assert_eq!(a, Mat3::new::<float>(1.0, 4.0, 7.0,
+                                         2.0, 5.0, 8.0,
+                                         3.0, 6.0, 9.0));
+
+        assert_eq!(a, Mat3::from_cols::<float>(Vec3::new::<float>(1.0, 4.0, 7.0),
+                                               Vec3::new::<float>(2.0, 5.0, 8.0),
+                                               Vec3::new::<float>(3.0, 6.0, 9.0)));
+
+        assert_eq!(*a.col(0), Vec3::new::<float>(1.0, 4.0, 7.0));
+        assert_eq!(*a.col(1), Vec3::new::<float>(2.0, 5.0, 8.0));
+        assert_eq!(*a.col(2), Vec3::new::<float>(3.0, 6.0, 9.0));
+
+        assert_eq!(a.row(0), Vec3::new::<float>(1.0, 2.0, 3.0));
+        assert_eq!(a.row(1), Vec3::new::<float>(4.0, 5.0, 6.0));
+        assert_eq!(a.row(2), Vec3::new::<float>(7.0, 8.0, 9.0));
+
+        assert_eq!(*a.col(0), Vec3::new::<float>(1.0, 4.0, 7.0));
+        assert_eq!(*a.col(1), Vec3::new::<float>(2.0, 5.0, 8.0));
+        assert_eq!(*a.col(2), Vec3::new::<float>(3.0, 6.0, 9.0));
+
+        assert_eq!(Mat3::identity::<float>(),
+                   Mat3::new::<float>(1.0, 0.0, 0.0,
+                                      0.0, 1.0, 0.0,
+                                      0.0, 0.0, 1.0));
+
+        assert_eq!(Mat3::zero::<float>(),
+                   Mat3::new::<float>(0.0, 0.0, 0.0,
+                                      0.0, 0.0, 0.0,
+                                      0.0, 0.0, 0.0));
+
+        assert_eq!(a.determinant(), 0.0);
+        assert_eq!(a.trace(), 15.0);
+
+        assert_eq!(a.neg(),
+                   Mat3::new::<float>(-1.0, -4.0, -7.0,
+                                      -2.0, -5.0, -8.0,
+                                      -3.0, -6.0, -9.0));
+        assert_eq!(-a, a.neg());
+
+        assert_eq!(a.mul_t(f1),
+                   Mat3::new::<float>(0.5, 2.0, 3.5,
+                                      1.0, 2.5, 4.0,
+                                      1.5, 3.0, 4.5));
+        assert_eq!(a.mul_v(&v1), Vec3::new::<float>(14.0, 32.0, 50.0));
+
+        assert_eq!(a.add_m(&b),
+                   Mat3::new::<float>(3.0,  9.0, 15.0,
+                                      5.0, 11.0, 17.0,
+                                      7.0, 13.0, 19.0));
+        assert_eq!(a.sub_m(&b),
+                   Mat3::new::<float>(-1.0, -1.0, -1.0,
+                                      -1.0, -1.0, -1.0,
+                                      -1.0, -1.0, -1.0));
+        assert_eq!(a.mul_m(&b),
+                   Mat3::new::<float>(36.0,  81.0, 126.0,
+                                      42.0,  96.0, 150.0,
+                                      48.0, 111.0, 174.0));
+        assert_eq!(a.dot(&b), 330.0);
+
+        assert_eq!(a.transpose(),
+                   Mat3::new::<float>(1.0, 2.0, 3.0,
+                                      4.0, 5.0, 6.0,
+                                      7.0, 8.0, 9.0));
+
+        assert!(a.inverse().is_none());
+
+        assert_eq!(Mat3::new::<float>(2.0, 4.0, 6.0,
+                                      0.0, 2.0, 4.0,
+                                      0.0, 0.0, 1.0).inverse().unwrap(),
+                   Mat3::new::<float>(0.5, -1.0,  1.0,
+                                      0.0,  0.5, -2.0,
+                                      0.0,  0.0,  1.0));
+
+        let ident = Mat3::identity::<float>();
+
+        assert_eq!(ident.inverse().unwrap(), ident);
+
+        assert!(ident.is_identity());
+        assert!(ident.is_symmetric());
+        assert!(ident.is_diagonal());
+        assert!(!ident.is_rotated());
+        assert!(ident.is_invertible());
+
+        assert!(!a.is_identity());
+        assert!(!a.is_symmetric());
+        assert!(!a.is_diagonal());
+        assert!(a.is_rotated());
+        assert!(!a.is_invertible());
+
+        let c = Mat3::new::<float>(3.0, 2.0, 1.0,
+                                   2.0, 3.0, 2.0,
+                                   1.0, 2.0, 3.0);
+        assert!(!c.is_identity());
+        assert!(c.is_symmetric());
+        assert!(!c.is_diagonal());
+        assert!(c.is_rotated());
+        assert!(c.is_invertible());
+
+        assert!(Mat3::from_value::<float>(6.0).is_diagonal());
+
+        assert_eq!(a.to_mat4(),
+                   Mat4::new::<float>(1.0, 4.0, 7.0, 0.0,
+                                      2.0, 5.0, 8.0, 0.0,
+                                      3.0, 6.0, 9.0, 0.0,
+                                      0.0, 0.0, 0.0, 1.0));
+
+        // to_Quaternion
+    }
+
+    fn test_mat3_mut() {
+        let a = Mat3 { x: Vec3 { x: 1.0, y: 4.0, z:  7.0 },
+                       y: Vec3 { x: 2.0, y: 5.0, z:  8.0 },
+                       z: Vec3 { x: 3.0, y: 6.0, z:  9.0 } };
+        let b = Mat3 { x: Vec3 { x: 2.0, y: 5.0, z:  8.0 },
+                       y: Vec3 { x: 3.0, y: 6.0, z:  9.0 },
+                       z: Vec3 { x: 4.0, y: 7.0, z: 10.0 } };
+        let c = Mat3 { x: Vec3 { x: 2.0, y: 4.0, z:  6.0 },
+                       y: Vec3 { x: 0.0, y: 2.0, z:  4.0 },
+                       z: Vec3 { x: 0.0, y: 0.0, z:  1.0 } };
+
+        let f1 = 0.5;
+
+        let mut mut_a = a;
+        let mut mut_c = c;
+
+        mut_a.swap_cols(0, 2);
+        assert_eq!(mut_a.col(0), a.col(2));
+        assert_eq!(mut_a.col(2), a.col(0));
+        mut_a = a;
+
+        mut_a.swap_cols(1, 2);
+        assert_eq!(mut_a.col(1), a.col(2));
+        assert_eq!(mut_a.col(2), a.col(1));
+        mut_a = a;
+
+        mut_a.swap_rows(0, 2);
+        assert_eq!(mut_a.row(0), a.row(2));
+        assert_eq!(mut_a.row(2), a.row(0));
+        mut_a = a;
+
+        mut_a.swap_rows(1, 2);
+        assert_eq!(mut_a.row(1), a.row(2));
+        assert_eq!(mut_a.row(2), a.row(1));
+        mut_a = a;
+
+        mut_a.to_identity();
+        assert!(mut_a.is_identity());
+        mut_a = a;
+
+        mut_a.to_zero();
+        assert_eq!(mut_a, Mat3::zero::<float>());
+        mut_a = a;
+
+        mut_a.mul_self_t(f1);
+        assert_eq!(mut_a, a.mul_t(f1));
+        mut_a = a;
+
+        mut_a.add_self_m(&b);
+        assert_eq!(mut_a, a.add_m(&b));
+        mut_a = a;
+
+        mut_a.sub_self_m(&b);
+        assert_eq!(mut_a, a.sub_m(&b));
+        mut_a = a;
+
+        mut_c.invert_self();
+        assert_eq!(mut_c, c.inverse().unwrap());
+        // mut_c = c;
+
+        mut_a.transpose_self();
+        assert_eq!(mut_a, a.transpose());
+        // mut_a = a;
+    }
+
+    #[test]
+    fn test_mat3_approx_eq() {
+        assert!(!Mat3::new::<float>(0.000001, 0.000001, 0.000001,
+                                    0.000001, 0.000001, 0.000001,
+                                    0.000001, 0.000001, 0.000001)
+                .approx_eq(&Mat3::zero::<float>()));
+        assert!(Mat3::new::<float>(0.0000001, 0.0000001, 0.0000001,
+                                    0.0000001, 0.0000001, 0.0000001,
+                                    0.0000001, 0.0000001, 0.0000001)
+                .approx_eq(&Mat3::zero::<float>()));
+    }
+}

src/mat4.rs

@@ -526,3 +526,225 @@ impl<T:Copy + Eq + ApproxEq<T>> ApproxEq<T> for Mat4<T> {
         self.col(3).approx_eq_eps(other.col(3), epsilon)
     }
 }
+
+#[cfg(test)]
+mod tests{
+    use mat::*;
+    use vec::*;
+
+    #[test]
+    fn test_mat4() {
+        let a = Mat4 { x: Vec4 { x: 1.0, y: 5.0, z:  9.0, w: 13.0 },
+                       y: Vec4 { x: 2.0, y: 6.0, z: 10.0, w: 14.0 },
+                       z: Vec4 { x: 3.0, y: 7.0, z: 11.0, w: 15.0 },
+                       w: Vec4 { x: 4.0, y: 8.0, z: 12.0, w: 16.0 } };
+        let b = Mat4 { x: Vec4 { x: 2.0, y: 6.0, z: 10.0, w: 14.0 },
+                       y: Vec4 { x: 3.0, y: 7.0, z: 11.0, w: 15.0 },
+                       z: Vec4 { x: 4.0, y: 8.0, z: 12.0, w: 16.0 },
+                       w: Vec4 { x: 5.0, y: 9.0, z: 13.0, w: 17.0 } };
+        let c = Mat4 { x: Vec4 { x: 3.0, y: 2.0, z:  1.0, w:  1.0 },
+                       y: Vec4 { x: 2.0, y: 3.0, z:  2.0, w:  2.0 },
+                       z: Vec4 { x: 1.0, y: 2.0, z:  3.0, w:  3.0 },
+                       w: Vec4 { x: 0.0, y: 1.0, z:  1.0, w:  0.0 } };
+
+        let v1 = Vec4::new::<float>(1.0, 2.0, 3.0, 4.0);
+        let f1 = 0.5;
+
+        assert_eq!(a, Mat4::new::<float>(1.0, 5.0,  9.0, 13.0,
+                                         2.0, 6.0, 10.0, 14.0,
+                                         3.0, 7.0, 11.0, 15.0,
+                                         4.0, 8.0, 12.0, 16.0));
+
+        assert_eq!(a, Mat4::from_cols::<float>(Vec4::new::<float>(1.0, 5.0,  9.0, 13.0),
+                                               Vec4::new::<float>(2.0, 6.0, 10.0, 14.0),
+                                               Vec4::new::<float>(3.0, 7.0, 11.0, 15.0),
+                                               Vec4::new::<float>(4.0, 8.0, 12.0, 16.0)));
+
+        assert_eq!(Mat4::from_value::<float>(4.0),
+                   Mat4::new::<float>(4.0, 0.0, 0.0, 0.0,
+                                      0.0, 4.0, 0.0, 0.0,
+                                      0.0, 0.0, 4.0, 0.0,
+                                      0.0, 0.0, 0.0, 4.0));
+
+        assert_eq!(*a.col(0), Vec4::new::<float>(1.0, 5.0,  9.0, 13.0));
+        assert_eq!(*a.col(1), Vec4::new::<float>(2.0, 6.0, 10.0, 14.0));
+        assert_eq!(*a.col(2), Vec4::new::<float>(3.0, 7.0, 11.0, 15.0));
+        assert_eq!(*a.col(3), Vec4::new::<float>(4.0, 8.0, 12.0, 16.0));
+
+        assert_eq!(a.row(0), Vec4::new::<float>( 1.0,  2.0,  3.0,  4.0));
+        assert_eq!(a.row(1), Vec4::new::<float>( 5.0,  6.0,  7.0,  8.0));
+        assert_eq!(a.row(2), Vec4::new::<float>( 9.0, 10.0, 11.0, 12.0));
+        assert_eq!(a.row(3), Vec4::new::<float>(13.0, 14.0, 15.0, 16.0));
+
+        assert_eq!(*a.col(0), Vec4::new::<float>(1.0, 5.0,  9.0, 13.0));
+        assert_eq!(*a.col(1), Vec4::new::<float>(2.0, 6.0, 10.0, 14.0));
+        assert_eq!(*a.col(2), Vec4::new::<float>(3.0, 7.0, 11.0, 15.0));
+        assert_eq!(*a.col(3), Vec4::new::<float>(4.0, 8.0, 12.0, 16.0));
+
+        assert_eq!(Mat4::identity::<float>(),
+                   Mat4::new::<float>(1.0, 0.0, 0.0, 0.0,
+                                      0.0, 1.0, 0.0, 0.0,
+                                      0.0, 0.0, 1.0, 0.0,
+                                      0.0, 0.0, 0.0, 1.0));
+
+        assert_eq!(Mat4::zero::<float>(),
+                   Mat4::new::<float>(0.0, 0.0, 0.0, 0.0,
+                                      0.0, 0.0, 0.0, 0.0,
+                                      0.0, 0.0, 0.0, 0.0,
+                                      0.0, 0.0, 0.0, 0.0));
+
+        assert_eq!(a.determinant(), 0.0);
+        assert_eq!(a.trace(), 34.0);
+
+        assert_eq!(a.neg(),
+                   Mat4::new::<float>(-1.0, -5.0,  -9.0, -13.0,
+                                      -2.0, -6.0, -10.0, -14.0,
+                                      -3.0, -7.0, -11.0, -15.0,
+                                      -4.0, -8.0, -12.0, -16.0));
+        assert_eq!(-a, a.neg());
+        assert_eq!(a.mul_t(f1),
+                   Mat4::new::<float>(0.5, 2.5, 4.5, 6.5,
+                                      1.0, 3.0, 5.0, 7.0,
+                                      1.5, 3.5, 5.5, 7.5,
+                                      2.0, 4.0, 6.0, 8.0));
+        assert_eq!(a.mul_v(&v1),
+                   Vec4::new::<float>(30.0, 70.0, 110.0, 150.0));
+        assert_eq!(a.add_m(&b),
+                   Mat4::new::<float>(3.0, 11.0, 19.0, 27.0,
+                                      5.0, 13.0, 21.0, 29.0,
+                                      7.0, 15.0, 23.0, 31.0,
+                                      9.0, 17.0, 25.0, 33.0));
+        assert_eq!(a.sub_m(&b),
+                   Mat4::new::<float>(-1.0, -1.0, -1.0, -1.0,
+                                      -1.0, -1.0, -1.0, -1.0,
+                                      -1.0, -1.0, -1.0, -1.0,
+                                      -1.0, -1.0, -1.0, -1.0));
+        assert_eq!(a.mul_m(&b),
+                   Mat4::new::<float>(100.0, 228.0, 356.0, 484.0,
+                                      110.0, 254.0, 398.0, 542.0,
+                                      120.0, 280.0, 440.0, 600.0,
+                                      130.0, 306.0, 482.0, 658.0));
+        assert_eq!(a.dot(&b), 1632.0);
+        assert_eq!(a.transpose(),
+                   Mat4::new::<float>( 1.0,  2.0,  3.0,  4.0,
+                                       5.0,  6.0,  7.0,  8.0,
+                                       9.0, 10.0, 11.0, 12.0,
+                                      13.0, 14.0, 15.0, 16.0));
+
+        assert_approx_eq!(c.inverse().unwrap(),
+                          Mat4::new::<float>( 5.0, -4.0,  1.0,  0.0,
+                                             -4.0,  8.0, -4.0,  0.0,
+                                              4.0, -8.0,  4.0,  8.0,
+                                             -3.0,  4.0,  1.0, -8.0).mul_t(0.125));
+
+        let ident = Mat4::identity::<float>();
+
+        assert_eq!(ident.inverse().unwrap(), ident);
+
+        assert!(ident.is_identity());
+        assert!(ident.is_symmetric());
+        assert!(ident.is_diagonal());
+        assert!(!ident.is_rotated());
+        assert!(ident.is_invertible());
+
+        assert!(!a.is_identity());
+        assert!(!a.is_symmetric());
+        assert!(!a.is_diagonal());
+        assert!(a.is_rotated());
+        assert!(!a.is_invertible());
+
+        let c = Mat4::new::<float>(4.0, 3.0, 2.0, 1.0,
+                                   3.0, 4.0, 3.0, 2.0,
+                                   2.0, 3.0, 4.0, 3.0,
+                                   1.0, 2.0, 3.0, 4.0);
+        assert!(!c.is_identity());
+        assert!(c.is_symmetric());
+        assert!(!c.is_diagonal());
+        assert!(c.is_rotated());
+        assert!(c.is_invertible());
+
+        assert!(Mat4::from_value::<float>(6.0).is_diagonal());
+    }
+
+    fn test_mat4_mut() {
+        let a = Mat4 { x: Vec4 { x: 1.0, y: 5.0, z:  9.0, w: 13.0 },
+                       y: Vec4 { x: 2.0, y: 6.0, z: 10.0, w: 14.0 },
+                       z: Vec4 { x: 3.0, y: 7.0, z: 11.0, w: 15.0 },
+                       w: Vec4 { x: 4.0, y: 8.0, z: 12.0, w: 16.0 } };
+        let b = Mat4 { x: Vec4 { x: 2.0, y: 6.0, z: 10.0, w: 14.0 },
+                       y: Vec4 { x: 3.0, y: 7.0, z: 11.0, w: 15.0 },
+                       z: Vec4 { x: 4.0, y: 8.0, z: 12.0, w: 16.0 },
+                       w: Vec4 { x: 5.0, y: 9.0, z: 13.0, w: 17.0 } };
+        let c = Mat4 { x: Vec4 { x: 3.0, y: 2.0, z:  1.0, w:  1.0 },
+                       y: Vec4 { x: 2.0, y: 3.0, z:  2.0, w:  2.0 },
+                       z: Vec4 { x: 1.0, y: 2.0, z:  3.0, w:  3.0 },
+                       w: Vec4 { x: 0.0, y: 1.0, z:  1.0, w:  0.0 } };
+
+        let f1 = 0.5;
+
+        let mut mut_a = a;
+        let mut mut_c = c;
+
+        mut_a.swap_cols(0, 3);
+        assert_eq!(mut_a.col(0), a.col(3));
+        assert_eq!(mut_a.col(3), a.col(0));
+        mut_a = a;
+
+        mut_a.swap_cols(1, 2);
+        assert_eq!(mut_a.col(1), a.col(2));
+        assert_eq!(mut_a.col(2), a.col(1));
+        mut_a = a;
+
+        mut_a.swap_rows(0, 3);
+        assert_eq!(mut_a.row(0), a.row(3));
+        assert_eq!(mut_a.row(3), a.row(0));
+        mut_a = a;
+
+        mut_a.swap_rows(1, 2);
+        assert_eq!(mut_a.row(1), a.row(2));
+        assert_eq!(mut_a.row(2), a.row(1));
+        mut_a = a;
+
+        mut_a.to_identity();
+        assert!(mut_a.is_identity());
+        mut_a = a;
+
+        mut_a.to_zero();
+        assert_eq!(mut_a, Mat4::zero::<float>());
+        mut_a = a;
+
+        mut_a.mul_self_t(f1);
+        assert_eq!(mut_a, a.mul_t(f1));
+        mut_a = a;
+
+        mut_a.add_self_m(&b);
+        assert_eq!(mut_a, a.add_m(&b));
+        mut_a = a;
+
+        mut_a.sub_self_m(&b);
+        assert_eq!(mut_a, a.sub_m(&b));
+        mut_a = a;
+
+        mut_c.invert_self();
+        assert_eq!(mut_c, c.inverse().unwrap());
+        // mut_c = c;
+
+        mut_a.transpose_self();
+        assert_eq!(mut_a, a.transpose());
+        // mut_a = a;
+    }
+
+    #[test]
+    fn test_mat4_approx_eq() {
+        assert!(!Mat4::new::<float>(0.000001, 0.000001, 0.000001, 0.000001,
+                                    0.000001, 0.000001, 0.000001, 0.000001,
+                                    0.000001, 0.000001, 0.000001, 0.000001,
+                                    0.000001, 0.000001, 0.000001, 0.000001)
+                .approx_eq(&Mat4::zero::<float>()));
+        assert!(Mat4::new::<float>(0.0000001, 0.0000001, 0.0000001, 0.0000001,
+                                   0.0000001, 0.0000001, 0.0000001, 0.0000001,
+                                   0.0000001, 0.0000001, 0.0000001, 0.0000001,
+                                   0.0000001, 0.0000001, 0.0000001, 0.0000001)
+                .approx_eq(&Mat4::zero::<float>()));
+    }
+}

src/quat.rs

@@ -389,3 +389,53 @@ impl<T:Copy + Eq + ApproxEq<T>> ApproxEq<T> for Quat<T> {
 priv fn two<T:Num>() -> T {
     One::one::<T>() + One::one::<T>()
 }
+
+#[cfg(test)]
+mod tests {
+    use mat::*;
+    use quat::*;
+    use vec::*;
+
+    #[test]
+    fn test_quat() {
+        let a = Quat { s: 1.0, v: Vec3 { x: 2.0, y: 3.0, z: 4.0 } };
+
+        assert_eq!(a, Quat::from_sv::<float>(1.0, Vec3::new::<float>(2.0, 3.0, 4.0)));
+        assert_eq!(a, Quat::new::<float>(1.0, 2.0, 3.0, 4.0));
+
+        assert_eq!(Quat::zero::<float>(), Quat::new::<float>(0.0, 0.0, 0.0, 0.0));
+        assert_eq!(Quat::identity::<float>(), Quat::new::<float>(1.0, 0.0, 0.0, 0.0));
+
+        assert_eq!(a.s, 1.0);
+        assert_eq!(a.v.x, 2.0);
+        assert_eq!(a.v.y, 3.0);
+        assert_eq!(a.v.z, 4.0);
+        assert_eq!(*a.index(0), 1.0);
+        assert_eq!(*a.index(1), 2.0);
+        assert_eq!(*a.index(2), 3.0);
+        assert_eq!(*a.index(3), 4.0);
+        // TODO
+    }
+
+    #[test]
+    fn test_quat_2() {
+        let v = Vec3::new(1f32, 0f32, 0f32);
+
+        let q = Quat::from_angle_axis((-45f32).to_radians(), &Vec3::new(0f32, 0f32, -1f32));
+
+        // http://www.wolframalpha.com/input/?i={1,0}+rotate+-45+degrees
+        assert_approx_eq!(q.mul_v(&v), Vec3::new(1f32/2f32.sqrt(), 1f32/2f32.sqrt(), 0f32));
+        assert_eq!(q.mul_v(&v).length(), v.length());
+        assert_approx_eq!(q.to_mat3(), Mat3::new( 1f32/2f32.sqrt(), 1f32/2f32.sqrt(), 0f32,
+                                                 -1f32/2f32.sqrt(), 1f32/2f32.sqrt(), 0f32,
+                                                              0f32,             0f32, 1f32));
+    }
+
+    #[test]
+    fn test_quat_approx_eq() {
+        assert!(!Quat::new::<float>(0.000001, 0.000001, 0.000001, 0.000001)
+                .approx_eq(&Quat::new::<float>(0.0, 0.0, 0.0, 0.0)));
+        assert!(Quat::new::<float>(0.0000001, 0.0000001, 0.0000001, 0.0000001)
+                .approx_eq(&Quat::new::<float>(0.0, 0.0, 0.0, 0.0)));
+    }
+}

src/test/test_mat.rs

@@ -1,594 +0,0 @@
-// Copyright 2013 The Lmath Developers. For a full listing of the authors,
-// refer to the AUTHORS file at the top-level directory of this distribution.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-use mat::*;
-use vec::*;
-
-#[test]
-fn test_mat2() {
-    let a = Mat2 { x: Vec2 { x: 1.0, y: 3.0 },
-                   y: Vec2 { x: 2.0, y: 4.0 } };
-    let b = Mat2 { x: Vec2 { x: 2.0, y: 4.0 },
-                   y: Vec2 { x: 3.0, y: 5.0 } };
-
-    let v1 = Vec2::new::<float>(1.0, 2.0);
-    let f1 = 0.5;
-
-    assert_eq!(a, Mat2::new::<float>(1.0, 3.0,
-                                     2.0, 4.0));
-
-    assert_eq!(a, Mat2::from_cols::<float>(Vec2::new::<float>(1.0, 3.0),
-                                           Vec2::new::<float>(2.0, 4.0)));
-
-    assert_eq!(Mat2::from_value::<float>(4.0),
-               Mat2::new::<float>(4.0, 0.0,
-                                  0.0, 4.0));
-
-    assert_eq!(*a.col(0), Vec2::new::<float>(1.0, 3.0));
-    assert_eq!(*a.col(1), Vec2::new::<float>(2.0, 4.0));
-
-    assert_eq!(a.row(0), Vec2::new::<float>(1.0, 2.0));
-    assert_eq!(a.row(1), Vec2::new::<float>(3.0, 4.0));
-
-    assert_eq!(*a.col(0), Vec2::new::<float>(1.0, 3.0));
-    assert_eq!(*a.col(1), Vec2::new::<float>(2.0, 4.0));
-
-    assert_eq!(Mat2::identity::<float>(),
-               Mat2::new::<float>(1.0, 0.0,
-                                  0.0, 1.0));
-
-    assert_eq!(Mat2::zero::<float>(),
-               Mat2::new::<float>(0.0, 0.0,
-                                  0.0, 0.0));
-
-    assert_eq!(a.determinant(), -2.0);
-    assert_eq!(a.trace(), 5.0);
-
-    assert_eq!(a.neg(),
-               Mat2::new::<float>(-1.0, -3.0,
-                                  -2.0, -4.0));
-    assert_eq!(-a, a.neg());
-    assert_eq!(a.mul_t(f1),
-               Mat2::new::<float>(0.5, 1.5,
-                                  1.0, 2.0));
-    assert_eq!(a.mul_v(&v1), Vec2::new::<float>(5.0, 11.0));
-    assert_eq!(a.add_m(&b),
-               Mat2::new::<float>(3.0, 7.0,
-                                  5.0, 9.0));
-    assert_eq!(a.sub_m(&b),
-               Mat2::new::<float>(-1.0, -1.0,
-                                  -1.0, -1.0));
-    assert_eq!(a.mul_m(&b),
-               Mat2::new::<float>(10.0, 22.0,
-                                  13.0, 29.0));
-    assert_eq!(a.dot(&b), 40.0);
-
-    assert_eq!(a.transpose(),
-               Mat2::new::<float>(1.0, 2.0,
-                                  3.0, 4.0));
-
-    assert_eq!(a.inverse().unwrap(),
-               Mat2::new::<float>(-2.0,  1.5,
-                                  1.0, -0.5));
-
-    assert!(Mat2::new::<float>(0.0, 2.0,
-                               0.0, 5.0).inverse().is_none());
-
-    let ident = Mat2::identity::<float>();
-
-    assert!(ident.is_identity());
-    assert!(ident.is_symmetric());
-    assert!(ident.is_diagonal());
-    assert!(!ident.is_rotated());
-    assert!(ident.is_invertible());
-
-    assert!(!a.is_identity());
-    assert!(!a.is_symmetric());
-    assert!(!a.is_diagonal());
-    assert!(a.is_rotated());
-    assert!(a.is_invertible());
-
-    let c = Mat2::new::<float>(2.0, 1.0,
-                               1.0, 2.0);
-    assert!(!c.is_identity());
-    assert!(c.is_symmetric());
-    assert!(!c.is_diagonal());
-    assert!(c.is_rotated());
-    assert!(c.is_invertible());
-
-    assert!(Mat2::from_value::<float>(6.0).is_diagonal());
-
-    assert_eq!(a.to_mat3(),
-               Mat3::new::<float>(1.0, 3.0, 0.0,
-                                  2.0, 4.0, 0.0,
-                                  0.0, 0.0, 1.0));
-
-    assert_eq!(a.to_mat4(),
-               Mat4::new::<float>(1.0, 3.0, 0.0, 0.0,
-                                  2.0, 4.0, 0.0, 0.0,
-                                  0.0, 0.0, 1.0, 0.0,
-                                  0.0, 0.0, 0.0, 1.0));
-}
-
-fn test_mat2_mut() {
-    let a = Mat2 { x: Vec2 { x: 1.0, y: 3.0 },
-                   y: Vec2 { x: 2.0, y: 4.0 } };
-    let b = Mat2 { x: Vec2 { x: 2.0, y: 4.0 },
-                   y: Vec2 { x: 3.0, y: 5.0 } };
-
-    let f1 = 0.5;
-
-    let mut mut_a = a;
-
-    mut_a.swap_cols(0, 1);
-    assert_eq!(mut_a.col(0), a.col(1));
-    assert_eq!(mut_a.col(1), a.col(0));
-    mut_a = a;
-
-    mut_a.swap_rows(0, 1);
-    assert_eq!(mut_a.row(0), a.row(1));
-    assert_eq!(mut_a.row(1), a.row(0));
-    mut_a = a;
-
-    mut_a.to_identity();
-    assert!(mut_a.is_identity());
-    mut_a = a;
-
-    mut_a.to_zero();
-    assert_eq!(mut_a, Mat2::zero::<float>());
-    mut_a = a;
-
-    mut_a.mul_self_t(f1);
-    assert_eq!(mut_a, a.mul_t(f1));
-    mut_a = a;
-
-    mut_a.add_self_m(&b);
-    assert_eq!(mut_a, a.add_m(&b));
-    mut_a = a;
-
-    mut_a.sub_self_m(&b);
-    assert_eq!(mut_a, a.sub_m(&b));
-    mut_a = a;
-
-    mut_a.invert_self();
-    assert_eq!(mut_a, a.inverse().unwrap());
-    mut_a = a;
-
-    mut_a.transpose_self();
-    assert_eq!(mut_a, a.transpose());
-    // mut_a = a;
-}
-
-#[test]
-fn test_mat2_approx_eq() {
-    assert!(!Mat2::new::<float>(0.000001, 0.000001,
-                       0.000001, 0.000001).approx_eq(&Mat2::zero::<float>()));
-    assert!(Mat2::new::<float>(0.0000001, 0.0000001,
-                      0.0000001, 0.0000001).approx_eq(&Mat2::zero::<float>()));
-}
-
-#[test]
-fn test_mat3() {
-    let a = Mat3 { x: Vec3 { x: 1.0, y: 4.0, z:  7.0 },
-                   y: Vec3 { x: 2.0, y: 5.0, z:  8.0 },
-                   z: Vec3 { x: 3.0, y: 6.0, z:  9.0 } };
-    let b = Mat3 { x: Vec3 { x: 2.0, y: 5.0, z:  8.0 },
-                   y: Vec3 { x: 3.0, y: 6.0, z:  9.0 },
-                   z: Vec3 { x: 4.0, y: 7.0, z: 10.0 } };
-
-    let v1 = Vec3::new::<float>(1.0, 2.0, 3.0);
-    let f1 = 0.5;
-
-    assert_eq!(a, Mat3::new::<float>(1.0, 4.0, 7.0,
-                                     2.0, 5.0, 8.0,
-                                     3.0, 6.0, 9.0));
-
-    assert_eq!(a, Mat3::from_cols::<float>(Vec3::new::<float>(1.0, 4.0, 7.0),
-                                           Vec3::new::<float>(2.0, 5.0, 8.0),
-                                           Vec3::new::<float>(3.0, 6.0, 9.0)));
-
-    assert_eq!(*a.col(0), Vec3::new::<float>(1.0, 4.0, 7.0));
-    assert_eq!(*a.col(1), Vec3::new::<float>(2.0, 5.0, 8.0));
-    assert_eq!(*a.col(2), Vec3::new::<float>(3.0, 6.0, 9.0));
-
-    assert_eq!(a.row(0), Vec3::new::<float>(1.0, 2.0, 3.0));
-    assert_eq!(a.row(1), Vec3::new::<float>(4.0, 5.0, 6.0));
-    assert_eq!(a.row(2), Vec3::new::<float>(7.0, 8.0, 9.0));
-
-    assert_eq!(*a.col(0), Vec3::new::<float>(1.0, 4.0, 7.0));
-    assert_eq!(*a.col(1), Vec3::new::<float>(2.0, 5.0, 8.0));
-    assert_eq!(*a.col(2), Vec3::new::<float>(3.0, 6.0, 9.0));
-
-    assert_eq!(Mat3::identity::<float>(),
-               Mat3::new::<float>(1.0, 0.0, 0.0,
-                                  0.0, 1.0, 0.0,
-                                  0.0, 0.0, 1.0));
-
-    assert_eq!(Mat3::zero::<float>(),
-               Mat3::new::<float>(0.0, 0.0, 0.0,
-                                  0.0, 0.0, 0.0,
-                                  0.0, 0.0, 0.0));
-
-    assert_eq!(a.determinant(), 0.0);
-    assert_eq!(a.trace(), 15.0);
-
-    assert_eq!(a.neg(),
-               Mat3::new::<float>(-1.0, -4.0, -7.0,
-                                  -2.0, -5.0, -8.0,
-                                  -3.0, -6.0, -9.0));
-    assert_eq!(-a, a.neg());
-
-    assert_eq!(a.mul_t(f1),
-               Mat3::new::<float>(0.5, 2.0, 3.5,
-                                  1.0, 2.5, 4.0,
-                                  1.5, 3.0, 4.5));
-    assert_eq!(a.mul_v(&v1), Vec3::new::<float>(14.0, 32.0, 50.0));
-
-    assert_eq!(a.add_m(&b),
-               Mat3::new::<float>(3.0,  9.0, 15.0,
-                                  5.0, 11.0, 17.0,
-                                  7.0, 13.0, 19.0));
-    assert_eq!(a.sub_m(&b),
-               Mat3::new::<float>(-1.0, -1.0, -1.0,
-                                  -1.0, -1.0, -1.0,
-                                  -1.0, -1.0, -1.0));
-    assert_eq!(a.mul_m(&b),
-               Mat3::new::<float>(36.0,  81.0, 126.0,
-                                  42.0,  96.0, 150.0,
-                                  48.0, 111.0, 174.0));
-    assert_eq!(a.dot(&b), 330.0);
-
-    assert_eq!(a.transpose(),
-               Mat3::new::<float>(1.0, 2.0, 3.0,
-                                  4.0, 5.0, 6.0,
-                                  7.0, 8.0, 9.0));
-
-    assert!(a.inverse().is_none());
-
-    assert_eq!(Mat3::new::<float>(2.0, 4.0, 6.0,
-                                  0.0, 2.0, 4.0,
-                                  0.0, 0.0, 1.0).inverse().unwrap(),
-               Mat3::new::<float>(0.5, -1.0,  1.0,
-                                  0.0,  0.5, -2.0,
-                                  0.0,  0.0,  1.0));
-
-    let ident = Mat3::identity::<float>();
-
-    assert_eq!(ident.inverse().unwrap(), ident);
-
-    assert!(ident.is_identity());
-    assert!(ident.is_symmetric());
-    assert!(ident.is_diagonal());
-    assert!(!ident.is_rotated());
-    assert!(ident.is_invertible());
-
-    assert!(!a.is_identity());
-    assert!(!a.is_symmetric());
-    assert!(!a.is_diagonal());
-    assert!(a.is_rotated());
-    assert!(!a.is_invertible());
-
-    let c = Mat3::new::<float>(3.0, 2.0, 1.0,
-                               2.0, 3.0, 2.0,
-                               1.0, 2.0, 3.0);
-    assert!(!c.is_identity());
-    assert!(c.is_symmetric());
-    assert!(!c.is_diagonal());
-    assert!(c.is_rotated());
-    assert!(c.is_invertible());
-
-    assert!(Mat3::from_value::<float>(6.0).is_diagonal());
-
-    assert_eq!(a.to_mat4(),
-               Mat4::new::<float>(1.0, 4.0, 7.0, 0.0,
-                                  2.0, 5.0, 8.0, 0.0,
-                                  3.0, 6.0, 9.0, 0.0,
-                                  0.0, 0.0, 0.0, 1.0));
-
-    // to_Quaternion
-}
-
-fn test_mat3_mut() {
-    let a = Mat3 { x: Vec3 { x: 1.0, y: 4.0, z:  7.0 },
-                   y: Vec3 { x: 2.0, y: 5.0, z:  8.0 },
-                   z: Vec3 { x: 3.0, y: 6.0, z:  9.0 } };
-    let b = Mat3 { x: Vec3 { x: 2.0, y: 5.0, z:  8.0 },
-                   y: Vec3 { x: 3.0, y: 6.0, z:  9.0 },
-                   z: Vec3 { x: 4.0, y: 7.0, z: 10.0 } };
-    let c = Mat3 { x: Vec3 { x: 2.0, y: 4.0, z:  6.0 },
-                   y: Vec3 { x: 0.0, y: 2.0, z:  4.0 },
-                   z: Vec3 { x: 0.0, y: 0.0, z:  1.0 } };
-
-    let f1 = 0.5;
-
-    let mut mut_a = a;
-    let mut mut_c = c;
-
-    mut_a.swap_cols(0, 2);
-    assert_eq!(mut_a.col(0), a.col(2));
-    assert_eq!(mut_a.col(2), a.col(0));
-    mut_a = a;
-
-    mut_a.swap_cols(1, 2);
-    assert_eq!(mut_a.col(1), a.col(2));
-    assert_eq!(mut_a.col(2), a.col(1));
-    mut_a = a;
-
-    mut_a.swap_rows(0, 2);
-    assert_eq!(mut_a.row(0), a.row(2));
-    assert_eq!(mut_a.row(2), a.row(0));
-    mut_a = a;
-
-    mut_a.swap_rows(1, 2);
-    assert_eq!(mut_a.row(1), a.row(2));
-    assert_eq!(mut_a.row(2), a.row(1));
-    mut_a = a;
-
-    mut_a.to_identity();
-    assert!(mut_a.is_identity());
-    mut_a = a;
-
-    mut_a.to_zero();
-    assert_eq!(mut_a, Mat3::zero::<float>());
-    mut_a = a;
-
-    mut_a.mul_self_t(f1);
-    assert_eq!(mut_a, a.mul_t(f1));
-    mut_a = a;
-
-    mut_a.add_self_m(&b);
-    assert_eq!(mut_a, a.add_m(&b));
-    mut_a = a;
-
-    mut_a.sub_self_m(&b);
-    assert_eq!(mut_a, a.sub_m(&b));
-    mut_a = a;
-
-    mut_c.invert_self();
-    assert_eq!(mut_c, c.inverse().unwrap());
-    // mut_c = c;
-
-    mut_a.transpose_self();
-    assert_eq!(mut_a, a.transpose());
-    // mut_a = a;
-}
-
-#[test]
-fn test_mat3_approx_eq() {
-    assert!(!Mat3::new::<float>(0.000001, 0.000001, 0.000001,
-                                0.000001, 0.000001, 0.000001,
-                                0.000001, 0.000001, 0.000001)
-            .approx_eq(&Mat3::zero::<float>()));
-    assert!(Mat3::new::<float>(0.0000001, 0.0000001, 0.0000001,
-                                0.0000001, 0.0000001, 0.0000001,
-                                0.0000001, 0.0000001, 0.0000001)
-            .approx_eq(&Mat3::zero::<float>()));
-}
-
-#[test]
-fn test_mat4() {
-    let a = Mat4 { x: Vec4 { x: 1.0, y: 5.0, z:  9.0, w: 13.0 },
-                         y: Vec4 { x: 2.0, y: 6.0, z: 10.0, w: 14.0 },
-                         z: Vec4 { x: 3.0, y: 7.0, z: 11.0, w: 15.0 },
-                         w: Vec4 { x: 4.0, y: 8.0, z: 12.0, w: 16.0 } };
-    let b = Mat4 { x: Vec4 { x: 2.0, y: 6.0, z: 10.0, w: 14.0 },
-                         y: Vec4 { x: 3.0, y: 7.0, z: 11.0, w: 15.0 },
-                         z: Vec4 { x: 4.0, y: 8.0, z: 12.0, w: 16.0 },
-                         w: Vec4 { x: 5.0, y: 9.0, z: 13.0, w: 17.0 } };
-    let c = Mat4 { x: Vec4 { x: 3.0, y: 2.0, z:  1.0, w:  1.0 },
-                         y: Vec4 { x: 2.0, y: 3.0, z:  2.0, w:  2.0 },
-                         z: Vec4 { x: 1.0, y: 2.0, z:  3.0, w:  3.0 },
-                         w: Vec4 { x: 0.0, y: 1.0, z:  1.0, w:  0.0 } };
-
-    let v1 = Vec4::new::<float>(1.0, 2.0, 3.0, 4.0);
-    let f1 = 0.5;
-
-    assert_eq!(a, Mat4::new::<float>(1.0, 5.0,  9.0, 13.0,
-                                     2.0, 6.0, 10.0, 14.0,
-                                     3.0, 7.0, 11.0, 15.0,
-                                     4.0, 8.0, 12.0, 16.0));
-
-    assert_eq!(a, Mat4::from_cols::<float>(Vec4::new::<float>(1.0, 5.0,  9.0, 13.0),
-                                           Vec4::new::<float>(2.0, 6.0, 10.0, 14.0),
-                                           Vec4::new::<float>(3.0, 7.0, 11.0, 15.0),
-                                           Vec4::new::<float>(4.0, 8.0, 12.0, 16.0)));
-
-    assert_eq!(Mat4::from_value::<float>(4.0),
-               Mat4::new::<float>(4.0, 0.0, 0.0, 0.0,
-                                  0.0, 4.0, 0.0, 0.0,
-                                  0.0, 0.0, 4.0, 0.0,
-                                  0.0, 0.0, 0.0, 4.0));
-
-    assert_eq!(*a.col(0), Vec4::new::<float>(1.0, 5.0,  9.0, 13.0));
-    assert_eq!(*a.col(1), Vec4::new::<float>(2.0, 6.0, 10.0, 14.0));
-    assert_eq!(*a.col(2), Vec4::new::<float>(3.0, 7.0, 11.0, 15.0));
-    assert_eq!(*a.col(3), Vec4::new::<float>(4.0, 8.0, 12.0, 16.0));
-
-    assert_eq!(a.row(0), Vec4::new::<float>( 1.0,  2.0,  3.0,  4.0));
-    assert_eq!(a.row(1), Vec4::new::<float>( 5.0,  6.0,  7.0,  8.0));
-    assert_eq!(a.row(2), Vec4::new::<float>( 9.0, 10.0, 11.0, 12.0));
-    assert_eq!(a.row(3), Vec4::new::<float>(13.0, 14.0, 15.0, 16.0));
-
-    assert_eq!(*a.col(0), Vec4::new::<float>(1.0, 5.0,  9.0, 13.0));
-    assert_eq!(*a.col(1), Vec4::new::<float>(2.0, 6.0, 10.0, 14.0));
-    assert_eq!(*a.col(2), Vec4::new::<float>(3.0, 7.0, 11.0, 15.0));
-    assert_eq!(*a.col(3), Vec4::new::<float>(4.0, 8.0, 12.0, 16.0));
-
-    assert_eq!(Mat4::identity::<float>(),
-               Mat4::new::<float>(1.0, 0.0, 0.0, 0.0,
-                                  0.0, 1.0, 0.0, 0.0,
-                                  0.0, 0.0, 1.0, 0.0,
-                                  0.0, 0.0, 0.0, 1.0));
-
-    assert_eq!(Mat4::zero::<float>(),
-               Mat4::new::<float>(0.0, 0.0, 0.0, 0.0,
-                                  0.0, 0.0, 0.0, 0.0,
-                                  0.0, 0.0, 0.0, 0.0,
-                                  0.0, 0.0, 0.0, 0.0));
-
-    assert_eq!(a.determinant(), 0.0);
-    assert_eq!(a.trace(), 34.0);
-
-    assert_eq!(a.neg(),
-               Mat4::new::<float>(-1.0, -5.0,  -9.0, -13.0,
-                                  -2.0, -6.0, -10.0, -14.0,
-                                  -3.0, -7.0, -11.0, -15.0,
-                                  -4.0, -8.0, -12.0, -16.0));
-    assert_eq!(-a, a.neg());
-    assert_eq!(a.mul_t(f1),
-               Mat4::new::<float>(0.5, 2.5, 4.5, 6.5,
-                                  1.0, 3.0, 5.0, 7.0,
-                                  1.5, 3.5, 5.5, 7.5,
-                                  2.0, 4.0, 6.0, 8.0));
-    assert_eq!(a.mul_v(&v1),
-               Vec4::new::<float>(30.0, 70.0, 110.0, 150.0));
-    assert_eq!(a.add_m(&b),
-               Mat4::new::<float>(3.0, 11.0, 19.0, 27.0,
-                                  5.0, 13.0, 21.0, 29.0,
-                                  7.0, 15.0, 23.0, 31.0,
-                                  9.0, 17.0, 25.0, 33.0));
-    assert_eq!(a.sub_m(&b),
-               Mat4::new::<float>(-1.0, -1.0, -1.0, -1.0,
-                                  -1.0, -1.0, -1.0, -1.0,
-                                  -1.0, -1.0, -1.0, -1.0,
-                                  -1.0, -1.0, -1.0, -1.0));
-    assert_eq!(a.mul_m(&b),
-               Mat4::new::<float>(100.0, 228.0, 356.0, 484.0,
-                                  110.0, 254.0, 398.0, 542.0,
-                                  120.0, 280.0, 440.0, 600.0,
-                                  130.0, 306.0, 482.0, 658.0));
-    assert_eq!(a.dot(&b), 1632.0);
-    assert_eq!(a.transpose(),
-               Mat4::new::<float>( 1.0,  2.0,  3.0,  4.0,
-                                   5.0,  6.0,  7.0,  8.0,
-                                   9.0, 10.0, 11.0, 12.0,
-                                  13.0, 14.0, 15.0, 16.0));
-
-    assert_approx_eq!(c.inverse().unwrap(),
-                      Mat4::new::<float>( 5.0, -4.0,  1.0,  0.0,
-                                         -4.0,  8.0, -4.0,  0.0,
-                                          4.0, -8.0,  4.0,  8.0,
-                                         -3.0,  4.0,  1.0, -8.0).mul_t(0.125));
-
-    let ident = Mat4::identity::<float>();
-
-    assert_eq!(ident.inverse().unwrap(), ident);
-
-    assert!(ident.is_identity());
-    assert!(ident.is_symmetric());
-    assert!(ident.is_diagonal());
-    assert!(!ident.is_rotated());
-    assert!(ident.is_invertible());
-
-    assert!(!a.is_identity());
-    assert!(!a.is_symmetric());
-    assert!(!a.is_diagonal());
-    assert!(a.is_rotated());
-    assert!(!a.is_invertible());
-
-    let c = Mat4::new::<float>(4.0, 3.0, 2.0, 1.0,
-                               3.0, 4.0, 3.0, 2.0,
-                               2.0, 3.0, 4.0, 3.0,
-                               1.0, 2.0, 3.0, 4.0);
-    assert!(!c.is_identity());
-    assert!(c.is_symmetric());
-    assert!(!c.is_diagonal());
-    assert!(c.is_rotated());
-    assert!(c.is_invertible());
-
-    assert!(Mat4::from_value::<float>(6.0).is_diagonal());
-}
-
-fn test_mat4_mut() {
-    let a = Mat4 { x: Vec4 { x: 1.0, y: 5.0, z:  9.0, w: 13.0 },
-                   y: Vec4 { x: 2.0, y: 6.0, z: 10.0, w: 14.0 },
-                   z: Vec4 { x: 3.0, y: 7.0, z: 11.0, w: 15.0 },
-                   w: Vec4 { x: 4.0, y: 8.0, z: 12.0, w: 16.0 } };
-    let b = Mat4 { x: Vec4 { x: 2.0, y: 6.0, z: 10.0, w: 14.0 },
-                   y: Vec4 { x: 3.0, y: 7.0, z: 11.0, w: 15.0 },
-                   z: Vec4 { x: 4.0, y: 8.0, z: 12.0, w: 16.0 },
-                   w: Vec4 { x: 5.0, y: 9.0, z: 13.0, w: 17.0 } };
-    let c = Mat4 { x: Vec4 { x: 3.0, y: 2.0, z:  1.0, w:  1.0 },
-                   y: Vec4 { x: 2.0, y: 3.0, z:  2.0, w:  2.0 },
-                   z: Vec4 { x: 1.0, y: 2.0, z:  3.0, w:  3.0 },
-                   w: Vec4 { x: 0.0, y: 1.0, z:  1.0, w:  0.0 } };
-
-    let f1 = 0.5;
-
-    let mut mut_a = a;
-    let mut mut_c = c;
-
-    mut_a.swap_cols(0, 3);
-    assert_eq!(mut_a.col(0), a.col(3));
-    assert_eq!(mut_a.col(3), a.col(0));
-    mut_a = a;
-
-    mut_a.swap_cols(1, 2);
-    assert_eq!(mut_a.col(1), a.col(2));
-    assert_eq!(mut_a.col(2), a.col(1));
-    mut_a = a;
-
-    mut_a.swap_rows(0, 3);
-    assert_eq!(mut_a.row(0), a.row(3));
-    assert_eq!(mut_a.row(3), a.row(0));
-    mut_a = a;
-
-    mut_a.swap_rows(1, 2);
-    assert_eq!(mut_a.row(1), a.row(2));
-    assert_eq!(mut_a.row(2), a.row(1));
-    mut_a = a;
-
-    mut_a.to_identity();
-    assert!(mut_a.is_identity());
-    mut_a = a;
-
-    mut_a.to_zero();
-    assert_eq!(mut_a, Mat4::zero::<float>());
-    mut_a = a;
-
-    mut_a.mul_self_t(f1);
-    assert_eq!(mut_a, a.mul_t(f1));
-    mut_a = a;
-
-    mut_a.add_self_m(&b);
-    assert_eq!(mut_a, a.add_m(&b));
-    mut_a = a;
-
-    mut_a.sub_self_m(&b);
-    assert_eq!(mut_a, a.sub_m(&b));
-    mut_a = a;
-
-    mut_c.invert_self();
-    assert_eq!(mut_c, c.inverse().unwrap());
-    // mut_c = c;
-
-    mut_a.transpose_self();
-    assert_eq!(mut_a, a.transpose());
-    // mut_a = a;
-}
-
-#[test]
-fn test_mat4_approx_eq() {
-    assert!(!Mat4::new::<float>(0.000001, 0.000001, 0.000001, 0.000001,
-                                0.000001, 0.000001, 0.000001, 0.000001,
-                                0.000001, 0.000001, 0.000001, 0.000001,
-                                0.000001, 0.000001, 0.000001, 0.000001)
-            .approx_eq(&Mat4::zero::<float>()));
-    assert!(Mat4::new::<float>(0.0000001, 0.0000001, 0.0000001, 0.0000001,
-                               0.0000001, 0.0000001, 0.0000001, 0.0000001,
-                               0.0000001, 0.0000001, 0.0000001, 0.0000001,
-                               0.0000001, 0.0000001, 0.0000001, 0.0000001)
-            .approx_eq(&Mat4::zero::<float>()));
-}

src/test/test_quat.rs

@@ -1,63 +0,0 @@
-// Copyright 2013 The Lmath Developers. For a full listing of the authors,
-// refer to the AUTHORS file at the top-level directory of this distribution.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-use mat::*;
-use quat::*;
-use vec::*;
-
-// TODO
-
-#[test]
-fn test_quat() {
-    let a = Quat { s: 1.0, v: Vec3 { x: 2.0, y: 3.0, z: 4.0 } };
-
-    assert_eq!(a, Quat::from_sv::<float>(1.0, Vec3::new::<float>(2.0, 3.0, 4.0)));
-    assert_eq!(a, Quat::new::<float>(1.0, 2.0, 3.0, 4.0));
-
-    assert_eq!(Quat::zero::<float>(), Quat::new::<float>(0.0, 0.0, 0.0, 0.0));
-    assert_eq!(Quat::identity::<float>(), Quat::new::<float>(1.0, 0.0, 0.0, 0.0));
-
-    assert_eq!(a.s, 1.0);
-    assert_eq!(a.v.x, 2.0);
-    assert_eq!(a.v.y, 3.0);
-    assert_eq!(a.v.z, 4.0);
-    assert_eq!(*a.index(0), 1.0);
-    assert_eq!(*a.index(1), 2.0);
-    assert_eq!(*a.index(2), 3.0);
-    assert_eq!(*a.index(3), 4.0);
-    // TODO
-}
-
-#[test]
-fn test_quat_2() {
-    let v = Vec3::new(1f32, 0f32, 0f32);
-
-    let q = Quat::from_angle_axis((-45f32).to_radians(), &Vec3::new(0f32, 0f32, -1f32));
-
-    // http://www.wolframalpha.com/input/?i={1,0}+rotate+-45+degrees
-    assert_approx_eq!(q.mul_v(&v), Vec3::new(1f32/2f32.sqrt(), 1f32/2f32.sqrt(), 0f32));
-    assert_eq!(q.mul_v(&v).length(), v.length());
-    assert_approx_eq!(q.to_mat3(), Mat3::new( 1f32/2f32.sqrt(), 1f32/2f32.sqrt(), 0f32,
-                                             -1f32/2f32.sqrt(), 1f32/2f32.sqrt(), 0f32,
-                                                          0f32,             0f32, 1f32));
-}
-
-#[test]
-fn test_quat_approx_eq() {
-    assert!(!Quat::new::<float>(0.000001, 0.000001, 0.000001, 0.000001)
-            .approx_eq(&Quat::new::<float>(0.0, 0.0, 0.0, 0.0)));
-    assert!(Quat::new::<float>(0.0000001, 0.0000001, 0.0000001, 0.0000001)
-            .approx_eq(&Quat::new::<float>(0.0, 0.0, 0.0, 0.0)));
-}

src/test/test_vec.rs

@@ -1,441 +0,0 @@
-// Copyright 2013 The Lmath Developers. For a full listing of the authors,
-// refer to the AUTHORS file at the top-level directory of this distribution.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-use vec::*;
-
-// TODO
-
-#[test]
-fn test_vec2() {
-    let a = Vec2 { x: 1.0, y: 2.0 };
-    let b = Vec2 { x: 3.0, y: 4.0 };
-    let f1 = 1.5;
-    let f2 = 0.5;
-
-    let mut mut_a = a;
-
-    assert_eq!(Vec2::new::<float>(1.0, 2.0), a);
-    assert_eq!(Vec2::from_value(1.0), Vec2::new::<float>(1.0, 1.0));
-
-    assert_eq!(Vec2::zero(), Vec2::new::<float>(0.0, 0.0));
-    assert_eq!(Vec2::unit_x(), Vec2::new::<float>(1.0, 0.0));
-    assert_eq!(Vec2::unit_y(), Vec2::new::<float>(0.0, 1.0));
-    assert_eq!(Vec2::identity(), Vec2::new::<float>(1.0, 1.0));
-
-    *mut_a.index_mut(0) = 42.0;
-    *mut_a.index_mut(1) = 43.0;
-    assert_eq!(mut_a, Vec2::new::<float>(42.0, 43.0));
-    mut_a = a;
-
-    mut_a.swap(0, 1);
-    assert_eq!(*mut_a.index(0), *a.index(1));
-    assert_eq!(*mut_a.index(1), *a.index(0));
-    mut_a = a;
-
-    assert_eq!(a.x, 1.0);
-    assert_eq!(a.y, 2.0);
-    assert_eq!(*a.index(0), 1.0);
-    assert_eq!(*a.index(1), 2.0);
-
-    assert_eq!(-a, Vec2::new::<float>(-1.0, -2.0));
-    assert_eq!(a.neg(), Vec2::new::<float>(-1.0, -2.0));
-
-    assert!(Vec2::new::<float>(0.0, 0.0).is_zero());
-    assert!(!Vec2::new::<float>(1.0, 1.0).is_zero());
-
-    assert_eq!(a.mul_t(f1), Vec2::new::<float>( 1.5, 3.0));
-    assert_eq!(a.div_t(f2), Vec2::new::<float>( 2.0, 4.0));
-
-    assert_eq!(a.add_v(&b), Vec2::new::<float>(    4.0,     6.0));
-    assert_eq!(a.sub_v(&b), Vec2::new::<float>(   -2.0,    -2.0));
-    assert_eq!(a.mul_v(&b), Vec2::new::<float>(    3.0,     8.0));
-    assert_eq!(a.div_v(&b), Vec2::new::<float>(1.0/3.0, 2.0/4.0));
-
-    mut_a.neg_self();
-    assert_eq!(mut_a, -a);
-    mut_a = a;
-
-    mut_a.mul_self_t(f1);
-    assert_eq!(mut_a, a.mul_t(f1));
-    mut_a = a;
-
-    mut_a.div_self_t(f2);
-    assert_eq!(mut_a, a.div_t(f2));
-    mut_a = a;
-
-    mut_a.add_self_v(&b);
-    assert_eq!(mut_a, a.add_v(&b));
-    mut_a = a;
-
-    mut_a.sub_self_v(&b);
-    assert_eq!(mut_a, a.sub_v(&b));
-    mut_a = a;
-
-    mut_a.mul_self_v(&b);
-    assert_eq!(mut_a, a.mul_v(&b));
-    mut_a = a;
-
-    mut_a.div_self_v(&b);
-    assert_eq!(mut_a, a.div_v(&b));
-}
-
-#[test]
-fn test_vec2_approx_eq() {
-    assert!(!Vec2::new::<float>(0.000001, 0.000001).approx_eq(&Vec2::new::<float>(0.0, 0.0)));
-    assert!(Vec2::new::<float>(0.0000001, 0.0000001).approx_eq(&Vec2::new::<float>(0.0, 0.0)));
-}
-
-#[test]
-fn test_vec2_euclidean() {
-    let a = Vec2::new::<float>(5.0, 12.0); // (5, 12, 13) Pythagorean triple
-    let b0 = Vec2::new::<float>(3.0, 4.0); // (3, 4, 5) Pythagorean triple
-    let b = a.add_v(&b0);
-
-    assert_eq!(a.length(), 13.0);
-    assert_eq!(a.length2(), 13.0 * 13.0);
-
-    assert_eq!(b0.length(), 5.0);
-    assert_eq!(b0.length2(), 5.0 * 5.0);
-
-    assert_eq!(a.distance(&b), 5.0);
-    assert_eq!(a.distance2(&b), 5.0 * 5.0);
-
-    assert!(Vec2::new::<float>(1.0, 0.0).angle(&Vec2::new::<float>(0.0, 1.0)).approx_eq(&Real::frac_pi_2()));
-    assert!(Vec2::new::<float>(10.0, 0.0).angle(&Vec2::new::<float>(0.0, 5.0)).approx_eq(&Real::frac_pi_2()));
-    assert!(Vec2::new::<float>(-1.0, 0.0).angle(&Vec2::new::<float>(0.0, 1.0)).approx_eq(&-Real::frac_pi_2::<float>()));
-
-    assert!(Vec2::new::<float>(3.0, 4.0).normalize().approx_eq(&Vec2::new::<float>(3.0/5.0, 4.0/5.0)));
-    // TODO: test normalize_to, normalize_self, and normalize_self_to
-
-    let c = Vec2::new::<float>(-2.0, -1.0);
-    let d = Vec2::new::<float>( 1.0,  0.0);
-
-    assert_eq!(c.lerp(&d, 0.75), Vec2::new::<float>(0.250, -0.250));
-
-    let mut mut_c = c;
-    mut_c.lerp_self(&d, 0.75);
-    assert_eq!(mut_c, c.lerp(&d, 0.75));
-}
-
-#[test]
-fn test_vec2_boolean() {
-    let tf = Vec2::new(true, false);
-    let ff = Vec2::new(false, false);
-    let tt = Vec2::new(true, true);
-
-    assert_eq!(tf.any(), true);
-    assert_eq!(tf.all(), false);
-    assert_eq!(tf.not(), Vec2::new(false, true));
-
-    assert_eq!(ff.any(), false);
-    assert_eq!(ff.all(), false);
-    assert_eq!(ff.not(), Vec2::new(true, true));
-
-    assert_eq!(tt.any(), true);
-    assert_eq!(tt.all(), true);
-    assert_eq!(tt.not(), Vec2::new(false, false));
-}
-
-#[test]
-fn test_vec3() {
-    let a = Vec3 { x: 1.0, y: 2.0, z: 3.0 };
-    let b = Vec3 { x: 4.0, y: 5.0, z: 6.0 };
-    let f1 = 1.5;
-    let f2 = 0.5;
-
-    let mut mut_a = a;
-
-    assert_eq!(Vec3::new::<float>(1.0, 2.0, 3.0), a);
-    assert_eq!(Vec3::from_value(1.0), Vec3::new::<float>(1.0, 1.0, 1.0));
-
-    assert_eq!(Vec3::zero(), Vec3::new::<float>(0.0, 0.0, 0.0));
-    assert_eq!(Vec3::unit_x(), Vec3::new::<float>(1.0, 0.0, 0.0));
-    assert_eq!(Vec3::unit_y(), Vec3::new::<float>(0.0, 1.0, 0.0));
-    assert_eq!(Vec3::unit_z(), Vec3::new::<float>(0.0, 0.0, 1.0));
-    assert_eq!(Vec3::identity(), Vec3::new::<float>(1.0, 1.0, 1.0));
-
-    *mut_a.index_mut(0) = 42.0;
-    *mut_a.index_mut(1) = 43.0;
-    *mut_a.index_mut(2) = 44.0;
-    assert_eq!(mut_a, Vec3::new::<float>(42.0, 43.0, 44.0));
-    mut_a = a;
-
-    mut_a.swap(0, 2);
-    assert_eq!(*mut_a.index(0), *a.index(2));
-    assert_eq!(*mut_a.index(2), *a.index(0));
-    mut_a = a;
-
-    mut_a.swap(1, 2);
-    assert_eq!(*mut_a.index(1), *a.index(2));
-    assert_eq!(*mut_a.index(2), *a.index(1));
-    mut_a = a;
-
-    assert_eq!(a.x, 1.0);
-    assert_eq!(a.y, 2.0);
-    assert_eq!(a.z, 3.0);
-    assert_eq!(*a.index(0), 1.0);
-    assert_eq!(*a.index(1), 2.0);
-    assert_eq!(*a.index(2), 3.0);
-
-    assert_eq!(a.cross(&b), Vec3::new::<float>(-3.0, 6.0, -3.0));
-
-    mut_a.cross_self(&b);
-    assert_eq!(mut_a, a.cross(&b));
-    mut_a = a;
-
-    assert_eq!(-a, Vec3::new::<float>(-1.0, -2.0, -3.0));
-    assert_eq!(a.neg(), Vec3::new::<float>(-1.0, -2.0, -3.0));
-
-    assert!(Vec3::new::<float>(0.0, 0.0, 0.0).is_zero());
-    assert!(!Vec3::new::<float>(1.0, 1.0, 1.0).is_zero());
-
-    assert_eq!(a.mul_t(f1), Vec3::new::<float>( 1.5, 3.0, 4.5));
-    assert_eq!(a.div_t(f2), Vec3::new::<float>( 2.0, 4.0, 6.0));
-
-    assert_eq!(a.add_v(&b), Vec3::new::<float>(    5.0,     7.0,     9.0));
-    assert_eq!(a.sub_v(&b), Vec3::new::<float>(   -3.0,    -3.0,    -3.0));
-    assert_eq!(a.mul_v(&b), Vec3::new::<float>(    4.0,    10.0,    18.0));
-    assert_eq!(a.div_v(&b), Vec3::new::<float>(1.0/4.0, 2.0/5.0, 3.0/6.0));
-
-    mut_a.neg_self();
-    assert_eq!(mut_a, -a);
-    mut_a = a;
-
-    mut_a.mul_self_t(f1);
-    assert_eq!(mut_a, a.mul_t(f1));
-    mut_a = a;
-
-    mut_a.div_self_t(f2);
-    assert_eq!(mut_a, a.div_t(f2));
-    mut_a = a;
-
-    mut_a.add_self_v(&b);
-    assert_eq!(mut_a, a.add_v(&b));
-    mut_a = a;
-
-    mut_a.sub_self_v(&b);
-    assert_eq!(mut_a, a.sub_v(&b));
-    mut_a = a;
-
-    mut_a.mul_self_v(&b);
-    assert_eq!(mut_a, a.mul_v(&b));
-    mut_a = a;
-
-    mut_a.div_self_v(&b);
-    assert_eq!(mut_a, a.div_v(&b));
-}
-
-#[test]
-fn test_vec3_approx_eq() {
-    assert!(!Vec3::new::<float>(0.000001, 0.000001, 0.000001).approx_eq(&Vec3::new::<float>(0.0, 0.0, 0.0)));
-    assert!(Vec3::new::<float>(0.0000001, 0.0000001, 0.0000001).approx_eq(&Vec3::new::<float>(0.0, 0.0, 0.0)));
-}
-
-#[test]
-fn test_vec3_euclidean() {
-    let a = Vec3::new::<float>(2.0, 3.0, 6.0); // (2, 3, 6, 7) Pythagorean quadruple
-    let b0 = Vec3::new::<float>(1.0, 4.0, 8.0); // (1, 4, 8, 9) Pythagorean quadruple
-    let b = a.add_v(&b0);
-
-    assert_eq!(a.length(), 7.0);
-    assert_eq!(a.length2(), 7.0 * 7.0);
-
-    assert_eq!(b0.length(), 9.0);
-    assert_eq!(b0.length2(), 9.0 * 9.0);
-
-    assert_eq!(a.distance(&b), 9.0);
-    assert_eq!(a.distance2(&b), 9.0 * 9.0);
-
-    assert!(Vec3::new::<float>(1.0, 0.0, 1.0).angle(&Vec3::new::<float>(1.0, 1.0, 0.0)).approx_eq(&Real::frac_pi_3()));
-    assert!(Vec3::new::<float>(10.0, 0.0, 10.0).angle(&Vec3::new::<float>(5.0, 5.0, 0.0)).approx_eq(&Real::frac_pi_3()));
-    assert!(Vec3::new::<float>(-1.0, 0.0, -1.0).angle(&Vec3::new::<float>(1.0, -1.0, 0.0)).approx_eq(&(2.0 * Real::frac_pi_3())));
-
-    assert!(Vec3::new::<float>(2.0, 3.0, 6.0).normalize().approx_eq(&Vec3::new::<float>(2.0/7.0, 3.0/7.0, 6.0/7.0)));
-    // TODO: test normalize_to, normalize_self, and normalize_self_to
-
-    let c = Vec3::new::<float>(-2.0, -1.0, 1.0);
-    let d = Vec3::new::<float>( 1.0,  0.0, 0.5);
-
-    assert_eq!(c.lerp(&d, 0.75), Vec3::new::<float>(0.250, -0.250, 0.625));
-
-    let mut mut_c = c;
-    mut_c.lerp_self(&d, 0.75);
-    assert_eq!(mut_c, c.lerp(&d, 0.75));
-}
-
-#[test]
-fn test_vec3_boolean() {
-    let tft = Vec3::new(true, false, true);
-    let fff = Vec3::new(false, false, false);
-    let ttt = Vec3::new(true, true, true);
-
-    assert_eq!(tft.any(), true);
-    assert_eq!(tft.all(), false);
-    assert_eq!(tft.not(), Vec3::new(false, true, false));
-
-    assert_eq!(fff.any(), false);
-    assert_eq!(fff.all(), false);
-    assert_eq!(fff.not(), Vec3::new(true, true, true));
-
-    assert_eq!(ttt.any(), true);
-    assert_eq!(ttt.all(), true);
-    assert_eq!(ttt.not(), Vec3::new(false, false, false));
-}
-
-#[test]
-fn test_vec4() {
-    let a = Vec4 { x: 1.0, y: 2.0, z: 3.0, w: 4.0 };
-    let b = Vec4 { x: 5.0, y: 6.0, z: 7.0, w: 8.0 };
-    let f1 = 1.5;
-    let f2 = 0.5;
-
-    let mut mut_a = a;
-
-    assert_eq!(Vec4::new::<float>(1.0, 2.0, 3.0, 4.0), a);
-    assert_eq!(Vec4::from_value(1.0), Vec4::new::<float>(1.0, 1.0, 1.0, 1.0));
-
-    *mut_a.index_mut(0) = 42.0;
-    *mut_a.index_mut(1) = 43.0;
-    *mut_a.index_mut(2) = 44.0;
-    *mut_a.index_mut(3) = 45.0;
-    assert_eq!(mut_a, Vec4::new::<float>(42.0, 43.0, 44.0, 45.0));
-    mut_a = a;
-
-    mut_a.swap(0, 3);
-    assert_eq!(*mut_a.index(0), *a.index(3));
-    assert_eq!(*mut_a.index(3), *a.index(0));
-    mut_a = a;
-
-    mut_a.swap(1, 2);
-    assert_eq!(*mut_a.index(1), *a.index(2));
-    assert_eq!(*mut_a.index(2), *a.index(1));
-    mut_a = a;
-
-    assert_eq!(Vec4::zero(), Vec4::new::<float>(0.0, 0.0, 0.0, 0.0));
-    assert_eq!(Vec4::unit_x(), Vec4::new::<float>(1.0, 0.0, 0.0, 0.0));
-    assert_eq!(Vec4::unit_y(), Vec4::new::<float>(0.0, 1.0, 0.0, 0.0));
-    assert_eq!(Vec4::unit_z(), Vec4::new::<float>(0.0, 0.0, 1.0, 0.0));
-    assert_eq!(Vec4::unit_w(), Vec4::new::<float>(0.0, 0.0, 0.0, 1.0));
-    assert_eq!(Vec4::identity(), Vec4::new::<float>(1.0, 1.0, 1.0, 1.0));
-
-    assert_eq!(a.x, 1.0);
-    assert_eq!(a.y, 2.0);
-    assert_eq!(a.z, 3.0);
-    assert_eq!(a.w, 4.0);
-    assert_eq!(*a.index(0), 1.0);
-    assert_eq!(*a.index(1), 2.0);
-    assert_eq!(*a.index(2), 3.0);
-    assert_eq!(*a.index(3), 4.0);
-
-    assert_eq!(-a, Vec4::new::<float>(-1.0, -2.0, -3.0, -4.0));
-    assert_eq!(a.neg(), Vec4::new::<float>(-1.0, -2.0, -3.0, -4.0));
-
-    assert!(Vec4::new::<float>(0.0, 0.0, 0.0, 0.0).is_zero());
-    assert!(!Vec4::new::<float>(1.0, 1.0, 1.0, 1.0).is_zero());
-
-    assert_eq!(a.mul_t(f1), Vec4::new::<float>( 1.5, 3.0, 4.5, 6.0));
-    assert_eq!(a.div_t(f2), Vec4::new::<float>( 2.0, 4.0, 6.0, 8.0));
-
-    assert_eq!(a.add_v(&b), Vec4::new::<float>(    6.0,     8.0,    10.0,    12.0));
-    assert_eq!(a.sub_v(&b), Vec4::new::<float>(   -4.0,    -4.0,    -4.0,    -4.0));
-    assert_eq!(a.mul_v(&b), Vec4::new::<float>(    5.0,    12.0,    21.0,    32.0));
-    assert_eq!(a.div_v(&b), Vec4::new::<float>(1.0/5.0, 2.0/6.0, 3.0/7.0, 4.0/8.0));
-
-    assert_eq!(a.dot(&b), 70.0);
-
-    mut_a.neg_self();
-    assert_eq!(mut_a, -a);
-    mut_a = a;
-
-    mut_a.mul_self_t(f1);
-    assert_eq!(mut_a, a.mul_t(f1));
-    mut_a = a;
-
-    mut_a.div_self_t(f2);
-    assert_eq!(mut_a, a.div_t(f2));
-    mut_a = a;
-
-    mut_a.add_self_v(&b);
-    assert_eq!(mut_a, a.add_v(&b));
-    mut_a = a;
-
-    mut_a.sub_self_v(&b);
-    assert_eq!(mut_a, a.sub_v(&b));
-    mut_a = a;
-
-    mut_a.mul_self_v(&b);
-    assert_eq!(mut_a, a.mul_v(&b));
-    mut_a = a;
-
-    mut_a.div_self_v(&b);
-    assert_eq!(mut_a, a.div_v(&b));
-}
-
-#[test]
-fn test_vec4_approx_eq() {
-    assert!(!Vec4::new::<float>(0.000001, 0.000001, 0.000001, 0.000001).approx_eq(&Vec4::new::<float>(0.0, 0.0, 0.0, 0.0)));
-    assert!(Vec4::new::<float>(0.0000001, 0.0000001, 0.0000001, 0.0000001).approx_eq(&Vec4::new::<float>(0.0, 0.0, 0.0, 0.0)));
-}
-
-#[test]
-fn test_vec4_euclidean() {
-    let a = Vec4::new::<float>(1.0, 2.0, 4.0, 10.0); // (1, 2, 4, 10, 11) Pythagorean quintuple
-    let b0 = Vec4::new::<float>(1.0, 2.0, 8.0, 10.0); // (1, 2, 8, 10, 13) Pythagorean quintuple
-    let b = a.add_v(&b0);
-
-    assert_eq!(a.length(), 11.0);
-    assert_eq!(a.length2(), 11.0 * 11.0);
-
-    assert_eq!(b0.length(), 13.0);
-    assert_eq!(b0.length2(), 13.0 * 13.0);
-
-    assert_eq!(a.distance(&b), 13.0);
-    assert_eq!(a.distance2(&b), 13.0 * 13.0);
-
-    assert!(Vec4::new::<float>(1.0, 0.0, 1.0, 0.0).angle(&Vec4::new::<float>(0.0, 1.0, 0.0, 1.0)).approx_eq(&Real::frac_pi_2()));
-    assert!(Vec4::new::<float>(10.0, 0.0, 10.0, 0.0).angle(&Vec4::new::<float>(0.0, 5.0, 0.0, 5.0)).approx_eq(&Real::frac_pi_2()));
-    assert!(Vec4::new::<float>(-1.0, 0.0, -1.0, 0.0).angle(&Vec4::new::<float>(0.0, 1.0, 0.0, 1.0)).approx_eq(&Real::frac_pi_2()));
-
-    assert!(Vec4::new::<float>(1.0, 2.0, 4.0, 10.0).normalize().approx_eq(&Vec4::new::<float>(1.0/11.0, 2.0/11.0, 4.0/11.0, 10.0/11.0)));
-    // TODO: test normalize_to, normalize_self, and normalize_self_to
-
-    let c = Vec4::new::<float>(-2.0, -1.0, 1.0, 2.0);
-    let d = Vec4::new::<float>( 1.0,  0.0, 0.5, 1.0);
-
-    assert_eq!(c.lerp(&d, 0.75), Vec4::new::<float>(0.250, -0.250, 0.625, 1.250));
-
-    let mut mut_c = c;
-    mut_c.lerp_self(&d, 0.75);
-    assert_eq!(mut_c, c.lerp(&d, 0.75));
-}
-
-#[test]
-fn test_vec4_boolean() {
-    let tftf = Vec4::new(true, false, true, false);
-    let ffff = Vec4::new(false, false, false, false);
-    let tttt = Vec4::new(true, true, true, true);
-
-    assert_eq!(tftf.any(), true);
-    assert_eq!(tftf.all(), false);
-    assert_eq!(tftf.not(), Vec4::new(false, true, false, true));
-
-    assert_eq!(ffff.any(), false);
-    assert_eq!(ffff.all(), false);
-    assert_eq!(ffff.not(), Vec4::new(true, true, true, true));
-
-    assert_eq!(tttt.any(), true);
-    assert_eq!(tttt.all(), true);
-    assert_eq!(tttt.not(), Vec4::new(false, false, false, false));
-}

src/vec2.rs

@@ -416,3 +416,139 @@ impl Vec2<bool> {
         Vec2::new(!*self.index(0), !*self.index(1))
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use vec::*;
+
+    #[test]
+    fn test_vec2() {
+        let a = Vec2 { x: 1.0, y: 2.0 };
+        let b = Vec2 { x: 3.0, y: 4.0 };
+        let f1 = 1.5;
+        let f2 = 0.5;
+
+        let mut mut_a = a;
+
+        assert_eq!(Vec2::new::<float>(1.0, 2.0), a);
+        assert_eq!(Vec2::from_value(1.0), Vec2::new::<float>(1.0, 1.0));
+
+        assert_eq!(Vec2::zero(), Vec2::new::<float>(0.0, 0.0));
+        assert_eq!(Vec2::unit_x(), Vec2::new::<float>(1.0, 0.0));
+        assert_eq!(Vec2::unit_y(), Vec2::new::<float>(0.0, 1.0));
+        assert_eq!(Vec2::identity(), Vec2::new::<float>(1.0, 1.0));
+
+        *mut_a.index_mut(0) = 42.0;
+        *mut_a.index_mut(1) = 43.0;
+        assert_eq!(mut_a, Vec2::new::<float>(42.0, 43.0));
+        mut_a = a;
+
+        mut_a.swap(0, 1);
+        assert_eq!(*mut_a.index(0), *a.index(1));
+        assert_eq!(*mut_a.index(1), *a.index(0));
+        mut_a = a;
+
+        assert_eq!(a.x, 1.0);
+        assert_eq!(a.y, 2.0);
+        assert_eq!(*a.index(0), 1.0);
+        assert_eq!(*a.index(1), 2.0);
+
+        assert_eq!(-a, Vec2::new::<float>(-1.0, -2.0));
+        assert_eq!(a.neg(), Vec2::new::<float>(-1.0, -2.0));
+
+        assert!(Vec2::new::<float>(0.0, 0.0).is_zero());
+        assert!(!Vec2::new::<float>(1.0, 1.0).is_zero());
+
+        assert_eq!(a.mul_t(f1), Vec2::new::<float>( 1.5, 3.0));
+        assert_eq!(a.div_t(f2), Vec2::new::<float>( 2.0, 4.0));
+
+        assert_eq!(a.add_v(&b), Vec2::new::<float>(    4.0,     6.0));
+        assert_eq!(a.sub_v(&b), Vec2::new::<float>(   -2.0,    -2.0));
+        assert_eq!(a.mul_v(&b), Vec2::new::<float>(    3.0,     8.0));
+        assert_eq!(a.div_v(&b), Vec2::new::<float>(1.0/3.0, 2.0/4.0));
+
+        mut_a.neg_self();
+        assert_eq!(mut_a, -a);
+        mut_a = a;
+
+        mut_a.mul_self_t(f1);
+        assert_eq!(mut_a, a.mul_t(f1));
+        mut_a = a;
+
+        mut_a.div_self_t(f2);
+        assert_eq!(mut_a, a.div_t(f2));
+        mut_a = a;
+
+        mut_a.add_self_v(&b);
+        assert_eq!(mut_a, a.add_v(&b));
+        mut_a = a;
+
+        mut_a.sub_self_v(&b);
+        assert_eq!(mut_a, a.sub_v(&b));
+        mut_a = a;
+
+        mut_a.mul_self_v(&b);
+        assert_eq!(mut_a, a.mul_v(&b));
+        mut_a = a;
+
+        mut_a.div_self_v(&b);
+        assert_eq!(mut_a, a.div_v(&b));
+    }
+
+    #[test]
+    fn test_vec2_approx_eq() {
+        assert!(!Vec2::new::<float>(0.000001, 0.000001).approx_eq(&Vec2::new::<float>(0.0, 0.0)));
+        assert!(Vec2::new::<float>(0.0000001, 0.0000001).approx_eq(&Vec2::new::<float>(0.0, 0.0)));
+    }
+
+    #[test]
+    fn test_vec2_euclidean() {
+        let a = Vec2::new::<float>(5.0, 12.0); // (5, 12, 13) Pythagorean triple
+        let b0 = Vec2::new::<float>(3.0, 4.0); // (3, 4, 5) Pythagorean triple
+        let b = a.add_v(&b0);
+
+        assert_eq!(a.length(), 13.0);
+        assert_eq!(a.length2(), 13.0 * 13.0);
+
+        assert_eq!(b0.length(), 5.0);
+        assert_eq!(b0.length2(), 5.0 * 5.0);
+
+        assert_eq!(a.distance(&b), 5.0);
+        assert_eq!(a.distance2(&b), 5.0 * 5.0);
+
+        assert!(Vec2::new::<float>(1.0, 0.0).angle(&Vec2::new::<float>(0.0, 1.0)).approx_eq(&Real::frac_pi_2()));
+        assert!(Vec2::new::<float>(10.0, 0.0).angle(&Vec2::new::<float>(0.0, 5.0)).approx_eq(&Real::frac_pi_2()));
+        assert!(Vec2::new::<float>(-1.0, 0.0).angle(&Vec2::new::<float>(0.0, 1.0)).approx_eq(&-Real::frac_pi_2::<float>()));
+
+        assert!(Vec2::new::<float>(3.0, 4.0).normalize().approx_eq(&Vec2::new::<float>(3.0/5.0, 4.0/5.0)));
+        // TODO: test normalize_to, normalize_self, and normalize_self_to
+
+        let c = Vec2::new::<float>(-2.0, -1.0);
+        let d = Vec2::new::<float>( 1.0,  0.0);
+
+        assert_eq!(c.lerp(&d, 0.75), Vec2::new::<float>(0.250, -0.250));
+
+        let mut mut_c = c;
+        mut_c.lerp_self(&d, 0.75);
+        assert_eq!(mut_c, c.lerp(&d, 0.75));
+    }
+
+    #[test]
+    fn test_vec2_boolean() {
+        let tf = Vec2::new(true, false);
+        let ff = Vec2::new(false, false);
+        let tt = Vec2::new(true, true);
+
+        assert_eq!(tf.any(), true);
+        assert_eq!(tf.all(), false);
+        assert_eq!(tf.not(), Vec2::new(false, true));
+
+        assert_eq!(ff.any(), false);
+        assert_eq!(ff.all(), false);
+        assert_eq!(ff.not(), Vec2::new(true, true));
+
+        assert_eq!(tt.any(), true);
+        assert_eq!(tt.all(), true);
+        assert_eq!(tt.not(), Vec2::new(false, false));
+    }
+}

src/vec3.rs

@@ -464,3 +464,154 @@ impl Vec3<bool> {
         Vec3::new(!*self.index(0), !*self.index(1), !*self.index(2))
     }
 }
+
+#[cfg(test)]
+mod tests{
+    use vec::*;
+
+    #[test]
+    fn test_vec3() {
+        let a = Vec3 { x: 1.0, y: 2.0, z: 3.0 };
+        let b = Vec3 { x: 4.0, y: 5.0, z: 6.0 };
+        let f1 = 1.5;
+        let f2 = 0.5;
+
+        let mut mut_a = a;
+
+        assert_eq!(Vec3::new::<float>(1.0, 2.0, 3.0), a);
+        assert_eq!(Vec3::from_value(1.0), Vec3::new::<float>(1.0, 1.0, 1.0));
+
+        assert_eq!(Vec3::zero(), Vec3::new::<float>(0.0, 0.0, 0.0));
+        assert_eq!(Vec3::unit_x(), Vec3::new::<float>(1.0, 0.0, 0.0));
+        assert_eq!(Vec3::unit_y(), Vec3::new::<float>(0.0, 1.0, 0.0));
+        assert_eq!(Vec3::unit_z(), Vec3::new::<float>(0.0, 0.0, 1.0));
+        assert_eq!(Vec3::identity(), Vec3::new::<float>(1.0, 1.0, 1.0));
+
+        *mut_a.index_mut(0) = 42.0;
+        *mut_a.index_mut(1) = 43.0;
+        *mut_a.index_mut(2) = 44.0;
+        assert_eq!(mut_a, Vec3::new::<float>(42.0, 43.0, 44.0));
+        mut_a = a;
+
+        mut_a.swap(0, 2);
+        assert_eq!(*mut_a.index(0), *a.index(2));
+        assert_eq!(*mut_a.index(2), *a.index(0));
+        mut_a = a;
+
+        mut_a.swap(1, 2);
+        assert_eq!(*mut_a.index(1), *a.index(2));
+        assert_eq!(*mut_a.index(2), *a.index(1));
+        mut_a = a;
+
+        assert_eq!(a.x, 1.0);
+        assert_eq!(a.y, 2.0);
+        assert_eq!(a.z, 3.0);
+        assert_eq!(*a.index(0), 1.0);
+        assert_eq!(*a.index(1), 2.0);
+        assert_eq!(*a.index(2), 3.0);
+
+        assert_eq!(a.cross(&b), Vec3::new::<float>(-3.0, 6.0, -3.0));
+
+        mut_a.cross_self(&b);
+        assert_eq!(mut_a, a.cross(&b));
+        mut_a = a;
+
+        assert_eq!(-a, Vec3::new::<float>(-1.0, -2.0, -3.0));
+        assert_eq!(a.neg(), Vec3::new::<float>(-1.0, -2.0, -3.0));
+
+        assert!(Vec3::new::<float>(0.0, 0.0, 0.0).is_zero());
+        assert!(!Vec3::new::<float>(1.0, 1.0, 1.0).is_zero());
+
+        assert_eq!(a.mul_t(f1), Vec3::new::<float>( 1.5, 3.0, 4.5));
+        assert_eq!(a.div_t(f2), Vec3::new::<float>( 2.0, 4.0, 6.0));
+
+        assert_eq!(a.add_v(&b), Vec3::new::<float>(    5.0,     7.0,     9.0));
+        assert_eq!(a.sub_v(&b), Vec3::new::<float>(   -3.0,    -3.0,    -3.0));
+        assert_eq!(a.mul_v(&b), Vec3::new::<float>(    4.0,    10.0,    18.0));
+        assert_eq!(a.div_v(&b), Vec3::new::<float>(1.0/4.0, 2.0/5.0, 3.0/6.0));
+
+        mut_a.neg_self();
+        assert_eq!(mut_a, -a);
+        mut_a = a;
+
+        mut_a.mul_self_t(f1);
+        assert_eq!(mut_a, a.mul_t(f1));
+        mut_a = a;
+
+        mut_a.div_self_t(f2);
+        assert_eq!(mut_a, a.div_t(f2));
+        mut_a = a;
+
+        mut_a.add_self_v(&b);
+        assert_eq!(mut_a, a.add_v(&b));
+        mut_a = a;
+
+        mut_a.sub_self_v(&b);
+        assert_eq!(mut_a, a.sub_v(&b));
+        mut_a = a;
+
+        mut_a.mul_self_v(&b);
+        assert_eq!(mut_a, a.mul_v(&b));
+        mut_a = a;
+
+        mut_a.div_self_v(&b);
+        assert_eq!(mut_a, a.div_v(&b));
+    }
+
+    #[test]
+    fn test_vec3_approx_eq() {
+        assert!(!Vec3::new::<float>(0.000001, 0.000001, 0.000001).approx_eq(&Vec3::new::<float>(0.0, 0.0, 0.0)));
+        assert!(Vec3::new::<float>(0.0000001, 0.0000001, 0.0000001).approx_eq(&Vec3::new::<float>(0.0, 0.0, 0.0)));
+    }
+
+    #[test]
+    fn test_vec3_euclidean() {
+        let a = Vec3::new::<float>(2.0, 3.0, 6.0); // (2, 3, 6, 7) Pythagorean quadruple
+        let b0 = Vec3::new::<float>(1.0, 4.0, 8.0); // (1, 4, 8, 9) Pythagorean quadruple
+        let b = a.add_v(&b0);
+
+        assert_eq!(a.length(), 7.0);
+        assert_eq!(a.length2(), 7.0 * 7.0);
+
+        assert_eq!(b0.length(), 9.0);
+        assert_eq!(b0.length2(), 9.0 * 9.0);
+
+        assert_eq!(a.distance(&b), 9.0);
+        assert_eq!(a.distance2(&b), 9.0 * 9.0);
+
+        assert!(Vec3::new::<float>(1.0, 0.0, 1.0).angle(&Vec3::new::<float>(1.0, 1.0, 0.0)).approx_eq(&Real::frac_pi_3()));
+        assert!(Vec3::new::<float>(10.0, 0.0, 10.0).angle(&Vec3::new::<float>(5.0, 5.0, 0.0)).approx_eq(&Real::frac_pi_3()));
+        assert!(Vec3::new::<float>(-1.0, 0.0, -1.0).angle(&Vec3::new::<float>(1.0, -1.0, 0.0)).approx_eq(&(2.0 * Real::frac_pi_3())));
+
+        assert!(Vec3::new::<float>(2.0, 3.0, 6.0).normalize().approx_eq(&Vec3::new::<float>(2.0/7.0, 3.0/7.0, 6.0/7.0)));
+        // TODO: test normalize_to, normalize_self, and normalize_self_to
+
+        let c = Vec3::new::<float>(-2.0, -1.0, 1.0);
+        let d = Vec3::new::<float>( 1.0,  0.0, 0.5);
+
+        assert_eq!(c.lerp(&d, 0.75), Vec3::new::<float>(0.250, -0.250, 0.625));
+
+        let mut mut_c = c;
+        mut_c.lerp_self(&d, 0.75);
+        assert_eq!(mut_c, c.lerp(&d, 0.75));
+    }
+
+    #[test]
+    fn test_vec3_boolean() {
+        let tft = Vec3::new(true, false, true);
+        let fff = Vec3::new(false, false, false);
+        let ttt = Vec3::new(true, true, true);
+
+        assert_eq!(tft.any(), true);
+        assert_eq!(tft.all(), false);
+        assert_eq!(tft.not(), Vec3::new(false, true, false));
+
+        assert_eq!(fff.any(), false);
+        assert_eq!(fff.all(), false);
+        assert_eq!(fff.not(), Vec3::new(true, true, true));
+
+        assert_eq!(ttt.any(), true);
+        assert_eq!(ttt.all(), true);
+        assert_eq!(ttt.not(), Vec3::new(false, false, false));
+    }
+}

src/vec4.rs

@@ -487,3 +487,154 @@ impl Vec4<bool> {
         Vec4::new(!*self.index(0), !*self.index(1), !*self.index(2), !*self.index(3))
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use vec::*;
+
+    #[test]
+    fn test_vec4() {
+        let a = Vec4 { x: 1.0, y: 2.0, z: 3.0, w: 4.0 };
+        let b = Vec4 { x: 5.0, y: 6.0, z: 7.0, w: 8.0 };
+        let f1 = 1.5;
+        let f2 = 0.5;
+
+        let mut mut_a = a;
+
+        assert_eq!(Vec4::new::<float>(1.0, 2.0, 3.0, 4.0), a);
+        assert_eq!(Vec4::from_value(1.0), Vec4::new::<float>(1.0, 1.0, 1.0, 1.0));
+
+        *mut_a.index_mut(0) = 42.0;
+        *mut_a.index_mut(1) = 43.0;
+        *mut_a.index_mut(2) = 44.0;
+        *mut_a.index_mut(3) = 45.0;
+        assert_eq!(mut_a, Vec4::new::<float>(42.0, 43.0, 44.0, 45.0));
+        mut_a = a;
+
+        mut_a.swap(0, 3);
+        assert_eq!(*mut_a.index(0), *a.index(3));
+        assert_eq!(*mut_a.index(3), *a.index(0));
+        mut_a = a;
+
+        mut_a.swap(1, 2);
+        assert_eq!(*mut_a.index(1), *a.index(2));
+        assert_eq!(*mut_a.index(2), *a.index(1));
+        mut_a = a;
+
+        assert_eq!(Vec4::zero(), Vec4::new::<float>(0.0, 0.0, 0.0, 0.0));
+        assert_eq!(Vec4::unit_x(), Vec4::new::<float>(1.0, 0.0, 0.0, 0.0));
+        assert_eq!(Vec4::unit_y(), Vec4::new::<float>(0.0, 1.0, 0.0, 0.0));
+        assert_eq!(Vec4::unit_z(), Vec4::new::<float>(0.0, 0.0, 1.0, 0.0));
+        assert_eq!(Vec4::unit_w(), Vec4::new::<float>(0.0, 0.0, 0.0, 1.0));
+        assert_eq!(Vec4::identity(), Vec4::new::<float>(1.0, 1.0, 1.0, 1.0));
+
+        assert_eq!(a.x, 1.0);
+        assert_eq!(a.y, 2.0);
+        assert_eq!(a.z, 3.0);
+        assert_eq!(a.w, 4.0);
+        assert_eq!(*a.index(0), 1.0);
+        assert_eq!(*a.index(1), 2.0);
+        assert_eq!(*a.index(2), 3.0);
+        assert_eq!(*a.index(3), 4.0);
+
+        assert_eq!(-a, Vec4::new::<float>(-1.0, -2.0, -3.0, -4.0));
+        assert_eq!(a.neg(), Vec4::new::<float>(-1.0, -2.0, -3.0, -4.0));
+
+        assert!(Vec4::new::<float>(0.0, 0.0, 0.0, 0.0).is_zero());
+        assert!(!Vec4::new::<float>(1.0, 1.0, 1.0, 1.0).is_zero());
+
+        assert_eq!(a.mul_t(f1), Vec4::new::<float>( 1.5, 3.0, 4.5, 6.0));
+        assert_eq!(a.div_t(f2), Vec4::new::<float>( 2.0, 4.0, 6.0, 8.0));
+
+        assert_eq!(a.add_v(&b), Vec4::new::<float>(    6.0,     8.0,    10.0,    12.0));
+        assert_eq!(a.sub_v(&b), Vec4::new::<float>(   -4.0,    -4.0,    -4.0,    -4.0));
+        assert_eq!(a.mul_v(&b), Vec4::new::<float>(    5.0,    12.0,    21.0,    32.0));
+        assert_eq!(a.div_v(&b), Vec4::new::<float>(1.0/5.0, 2.0/6.0, 3.0/7.0, 4.0/8.0));
+
+        assert_eq!(a.dot(&b), 70.0);
+
+        mut_a.neg_self();
+        assert_eq!(mut_a, -a);
+        mut_a = a;
+
+        mut_a.mul_self_t(f1);
+        assert_eq!(mut_a, a.mul_t(f1));
+        mut_a = a;
+
+        mut_a.div_self_t(f2);
+        assert_eq!(mut_a, a.div_t(f2));
+        mut_a = a;
+
+        mut_a.add_self_v(&b);
+        assert_eq!(mut_a, a.add_v(&b));
+        mut_a = a;
+
+        mut_a.sub_self_v(&b);
+        assert_eq!(mut_a, a.sub_v(&b));
+        mut_a = a;
+
+        mut_a.mul_self_v(&b);
+        assert_eq!(mut_a, a.mul_v(&b));
+        mut_a = a;
+
+        mut_a.div_self_v(&b);
+        assert_eq!(mut_a, a.div_v(&b));
+    }
+
+    #[test]
+    fn test_vec4_approx_eq() {
+        assert!(!Vec4::new::<float>(0.000001, 0.000001, 0.000001, 0.000001).approx_eq(&Vec4::new::<float>(0.0, 0.0, 0.0, 0.0)));
+        assert!(Vec4::new::<float>(0.0000001, 0.0000001, 0.0000001, 0.0000001).approx_eq(&Vec4::new::<float>(0.0, 0.0, 0.0, 0.0)));
+    }
+
+    #[test]
+    fn test_vec4_euclidean() {
+        let a = Vec4::new::<float>(1.0, 2.0, 4.0, 10.0); // (1, 2, 4, 10, 11) Pythagorean quintuple
+        let b0 = Vec4::new::<float>(1.0, 2.0, 8.0, 10.0); // (1, 2, 8, 10, 13) Pythagorean quintuple
+        let b = a.add_v(&b0);
+
+        assert_eq!(a.length(), 11.0);
+        assert_eq!(a.length2(), 11.0 * 11.0);
+
+        assert_eq!(b0.length(), 13.0);
+        assert_eq!(b0.length2(), 13.0 * 13.0);
+
+        assert_eq!(a.distance(&b), 13.0);
+        assert_eq!(a.distance2(&b), 13.0 * 13.0);
+
+        assert!(Vec4::new::<float>(1.0, 0.0, 1.0, 0.0).angle(&Vec4::new::<float>(0.0, 1.0, 0.0, 1.0)).approx_eq(&Real::frac_pi_2()));
+        assert!(Vec4::new::<float>(10.0, 0.0, 10.0, 0.0).angle(&Vec4::new::<float>(0.0, 5.0, 0.0, 5.0)).approx_eq(&Real::frac_pi_2()));
+        assert!(Vec4::new::<float>(-1.0, 0.0, -1.0, 0.0).angle(&Vec4::new::<float>(0.0, 1.0, 0.0, 1.0)).approx_eq(&Real::frac_pi_2()));
+
+        assert!(Vec4::new::<float>(1.0, 2.0, 4.0, 10.0).normalize().approx_eq(&Vec4::new::<float>(1.0/11.0, 2.0/11.0, 4.0/11.0, 10.0/11.0)));
+        // TODO: test normalize_to, normalize_self, and normalize_self_to
+
+        let c = Vec4::new::<float>(-2.0, -1.0, 1.0, 2.0);
+        let d = Vec4::new::<float>( 1.0,  0.0, 0.5, 1.0);
+
+        assert_eq!(c.lerp(&d, 0.75), Vec4::new::<float>(0.250, -0.250, 0.625, 1.250));
+
+        let mut mut_c = c;
+        mut_c.lerp_self(&d, 0.75);
+        assert_eq!(mut_c, c.lerp(&d, 0.75));
+    }
+
+    #[test]
+    fn test_vec4_boolean() {
+        let tftf = Vec4::new(true, false, true, false);
+        let ffff = Vec4::new(false, false, false, false);
+        let tttt = Vec4::new(true, true, true, true);
+
+        assert_eq!(tftf.any(), true);
+        assert_eq!(tftf.all(), false);
+        assert_eq!(tftf.not(), Vec4::new(false, true, false, true));
+
+        assert_eq!(ffff.any(), false);
+        assert_eq!(ffff.all(), false);
+        assert_eq!(ffff.not(), Vec4::new(true, true, true, true));
+
+        assert_eq!(tttt.any(), true);
+        assert_eq!(tttt.all(), true);
+        assert_eq!(tttt.not(), Vec4::new(false, false, false, false));
+    }
+}