Add operator<< overloads for Vector3, Ray, and Color

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;
+}

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