added diffuse and specular colors to Material, switched all "private:" to "protected:"

git-svn-id: svn://anubis/fart/trunk@69 7f9b0f55-74a9-4bce-be96-3c2cd072584d

util/Ray.h

@@ -15,7 +15,7 @@ class Ray
         Vector getPositionAt(double dist) const;
         Vector operator[](double dist) const { return getPositionAt(dist); }
 
-    private:
+    protected:
         Vector  m_origin;
         Vector  m_direction;
 };

util/Vector.h

@@ -17,7 +17,7 @@ class Vector
         Vector proj(const Vector & target) const;
         Vector reflect(const Vector & target) const;
 
-    private:
+    protected:
         double  m_array[3];
 };