Ray casting with spheres.

sphere.hpp

@@ -0,0 +1,27 @@
+#pragma once
+#ifndef SPHERE_HPP
+#define SPHERE_HPP
+
+#include <glm/vec3.hpp>
+
+#include "figure.hpp"
+
+using glm::vec3;
+
+class Sphere : public Figure {
+public:
+  vec3 m_center;
+  float m_radius;
+  
+  Sphere(): m_center(vec3(0.0f)), m_radius(0.5f) { }
+
+  Sphere(float x, float y, float z, float r): m_center(vec3(x, y, z)), m_radius(r) { }
+
+  Sphere(vec3 _c, float r): m_center(_c), m_radius(r) { }
+
+  virtual ~Sphere() { }
+
+  virtual bool intersect(Ray & r, float & t) const;
+};
+
+#endif