From da127ccde3a7e237b2ae44f547486534a1175b12 Mon Sep 17 00:00:00 2001
From: Eryn Wells <eryn@erynwells.me>
Date: Fri, 8 Aug 2014 21:12:37 -0700
Subject: [PATCH] Vector4 subclass instead of typedef

---
 src/basics/vector.cc | 50 ++++++++++++++++++++++++++++++++++++++++++++
 src/basics/vector.hh | 11 +++++++++-
 2 files changed, 60 insertions(+), 1 deletion(-)
 create mode 100644 src/basics/vector.cc

diff --git a/src/basics/vector.cc b/src/basics/vector.cc
new file mode 100644
index 0000000..31842b8
--- /dev/null
+++ b/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 */
+
diff --git a/src/basics/vector.hh b/src/basics/vector.hh
index b16c103..c383b19 100644
--- a/src/basics/vector.hh
+++ b/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 */