Ray casting with spheres.

figure.hpp

@@ -0,0 +1,26 @@
+#pragma once
+#ifndef FIGURE_HPP
+#define FIGURE_HPP
+
+#include <glm/vec3.hpp>
+
+#include "ray.hpp"
+
+class Figure {
+public:
+  vec3 color;
+
+  virtual ~Figure() { }
+
+  virtual bool intersect(Ray & r, float & t) const = 0;
+
+  virtual void set_color(float r, float g, float b) {
+    color = vec3(r, g, b);
+  }
+
+  virtual void set_color(vec3 rgb) {
+    color = vec3(rgb);
+  }
+};
+
+#endif