Merge pull request #4 from rlane/default

Implement Default for vector and matrices

src/mat.rs

@@ -124,6 +124,12 @@ macro_rules! mat_impl {
             }
         }
 
+        impl<T> Default for $MatN<T> where T: Number {
+            fn default() -> Self {
+                Self::identity()
+            }
+        }
+
         impl<T> Eq for $MatN<T> where T: Eq  {}
         impl<T> PartialEq for $MatN<T> where T: PartialEq  {
             fn eq(&self, other: &Self) -> bool {

src/vec.rs

@@ -867,6 +867,12 @@ macro_rules! vec_impl {
             }
         }
 
+        impl<T> Default for $VecN<T> where T: Number {
+            fn default() -> Self {
+                Self::zero()
+            }
+        }
+
         //
         // ops
         //

tests/tests.rs

@@ -651,6 +651,13 @@ fn perp_product() {
     assert_eq!(pp, vec2f(-0.5, 0.5));
 }
 
+#[test]
+fn default() {
+    let vz : Vec3f = Default::default();
+    let expected = vec3f(0.0, 0.0, 0.0);
+    assert_eq!(vz, expected);
+}
+
 #[test]
 fn zero() {
     let vz = Vec3f::zero();
@@ -914,6 +921,12 @@ fn matrix_get_rows_columns() {
     assert_eq!(m34.get_column(2), vec3f(2.0, 6.0, 10.0));
 }
 
+#[test]
+fn matrix_default() {
+    let m4 : Mat4<f32> = Default::default();
+    assert_eq!(m4, Mat4f::identity());
+}
+
 #[test]
 fn matrix_zero() {
     let m4 = Mat4f::zero();