Ray casting with spheres.

ray.hpp

@@ -0,0 +1,19 @@
+#pragma once
+#ifndef RAY_HPP
+#define RAY_HPP
+
+#include <glm/vec3.hpp>
+
+using glm::vec3;
+
+class Ray {
+public:
+  vec3 m_direction;
+  vec3 m_origin;
+
+  Ray(): m_direction(vec3(0.0f, 0.0f, -1.0f)), m_origin(vec3(0.0f)) { }
+  Ray(float dx, float dy, float dz, float ox, float oy, float oz): m_direction(vec3(dx, dy, dz)), m_origin(vec3(ox, oy, oz)) {}
+  Ray(vec3 _d, vec3 _o): m_direction(_d), m_origin(_o) { }
+};
+
+#endif