From c6b8b167cac2dca626c2b80974bcca50489366bc Mon Sep 17 00:00:00 2001
From: Eryn Wells <eryn@erynwells.me>
Date: Sun, 22 Sep 2013 10:15:41 -0700
Subject: [PATCH] Add operator<< overloads for Vector3, Ray, and Color

---
 src/basics.cc | 26 ++++++++++++++++++++++++++
 src/basics.h  |  7 +++++++
 2 files changed, 33 insertions(+)

diff --git a/src/basics.cc b/src/basics.cc
index 8dd91d4..eac030c 100644
--- a/src/basics.cc
+++ b/src/basics.cc
@@ -242,6 +242,15 @@ operator*(const float &lhs, const Vector3 &rhs)
     return rhs * lhs;
 }
 
+
+std::ostream &
+operator<<(std::ostream &os, const Vector3 &v)
+{
+    // Stream the vector like this: <x, y, z>
+    os << "<" << v.x << ", " << v.y << ", " << v.z << ">";
+    return os;
+}
+
 #pragma mark - Rays
 
 /*
@@ -276,6 +285,14 @@ Ray::parameterize(const float t)
     return origin + t * direction;
 }
 
+
+std::ostream &
+operator<<(std::ostream &os, const Ray &r)
+{
+    os << "[Ray " << r.origin << " " << r.direction << "]";
+    return os;
+}
+
 #pragma mark - Colors
 
 const Color Color::Black  = Color();
@@ -482,3 +499,12 @@ operator*(const float &lhs, const Color &rhs)
 {
     return rhs * lhs;
 }
+
+
+std::ostream &
+operator<<(std::ostream &os, const Color &c)
+{
+    // Stream colors like this: <r, g, b, a>
+    os << "<" << c.red << ", " << c.green << ", " << c.blue << ", " << c.alpha << ">";
+    return os;
+}
diff --git a/src/basics.h b/src/basics.h
index ab6b16a..04d6d38 100644
--- a/src/basics.h
+++ b/src/basics.h
@@ -12,6 +12,9 @@
 #ifndef __BASICS_H__
 #define __BASICS_H__
 
+#include <iostream>
+
+
 struct Vector3
 {
     Vector3();
@@ -46,6 +49,7 @@ struct Vector3
 };
 
 const Vector3 operator*(const float &lhs, const Vector3 &rhs);
+std::ostream &operator<<(std::ostream &os, const Vector3 &v);
 
 
 struct Ray
@@ -58,6 +62,8 @@ struct Ray
     Vector3 origin, direction;
 };
 
+std::ostream &operator<<(std::ostream &os, const Ray &r);
+
 
 struct Color
 {
@@ -96,5 +102,6 @@ struct Color
 };
 
 const Color operator*(const float &lhs, const Color &rhs);
+std::ostream &operator<<(std::ostream &os, const Color &c);
 
 #endif