Vector4 subclass instead of typedef

src/basics/vector.cc

@@ -0,0 +1,50 @@
+/* vector.cc
+ * vim: set tw=80:
+ * Eryn Wells <eryn@erynwells.me>
+ */
+
+#include "basics/vector.hh"
+
+
+namespace charles {
+namespace basics {
+
+Vector4::Vector4()
+    : mCells({0.0, 0.0, 0.0, 1.0})
+{
+
+}
+
+
+/*
+ * charles::basics::Vector4::X --
+ */
+Double&
+Vector4::X()
+{
+    return mData[0];
+}
+
+
+/*
+ * charles::basics::Vector4::Y --
+ */
+Double&
+Vector4::Y()
+{
+    return mData[1];
+}
+
+
+/*
+ * charles::basics::Vector4::Z --
+ */
+Double&
+Vector4::Z()
+{
+    return mData[2];
+}
+
+} /* namespace basics */
+} /* namespace charles */
+

src/basics/vector.hh

@@ -19,7 +19,16 @@ struct Vector
 { };
 
 
-typedef Vector<4> Vector4;
+struct Vector4
+    : public Vector<4>
+{
+    Vector4();
+    Vector4(Double x, Double y, Double z);
+
+    Double& X();
+    Double& Y();
+    Double& Z();
+};
 
 } /* namespace basics */
 } /* namespace charles */