Merge branch 'render'

src/math/vector.rs

@@ -33,6 +33,12 @@ macro_rules! make_vector {
             }
         }
 
+        impl<T> Into<[T; $number]> for $name<T> {
+            fn into(self) -> [T; $number] {
+                self.data
+            }
+        }
+
         impl<T: Copy + Clone> Into<($( $t ) ,* )> for $name<T> {
             fn into(self) -> ($( $t ) ,* ) {
                 ( $( self.data[$y] ), *)
@@ -62,6 +68,11 @@ macro_rules! make_vector {
                 pub fn $x(&self) -> T {
                     self.data[$y]
                 }
+
+                /// Get a mut ref to the coordinate of the vector.
+                pub fn $x_mut(&mut self) -> &mut T {
+                    &mut self.data[$y]
+                }
              )*
         }