implement Default for vector and matrices

polymonster · Sep 9, 2023 · 0f1f9f9 · 0f1f9f9
1 parent 123761d
commit 0f1f9f9
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Showing 3 changed files with 28 additions and 0 deletions.
diff --git a/src/mat.rs b/src/mat.rs
@@ -124,6 +124,12 @@ macro_rules! mat_impl {
             }
         }
 
+        impl<T> Default for $MatN<T> where T: Number {
+            fn default() -> Self {
+                Self::zero()
+            }
+        }
+
         impl<T> Eq for $MatN<T> where T: Eq  {}
         impl<T> PartialEq for $MatN<T> where T: PartialEq  {
             fn eq(&self, other: &Self) -> bool {

diff --git a/src/vec.rs b/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
         //

diff --git a/tests/tests.rs b/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 +921,15 @@ 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();
+    for i in 0..4 {
+        assert_eq!(m4.get_row(i), vec4f(0.0, 0.0, 0.0, 0.0));
+        assert_eq!(m4.get_column(i), vec4f(0.0, 0.0, 0.0, 0.0));
+    }
+}
+
 #[test]
 fn matrix_zero() {
     let m4 = Mat4f::zero();