Made Tracer an abstract class.

path_tracer.hpp

@@ -0,0 +1,20 @@
+#pragma once
+#ifndef PATH_TRACER_HPP
+#define PATH_TRACER_HPP
+
+#include "tracer.hpp"
+
+class PathTracer: public Tracer {
+public:
+  bool indirect_l;
+
+  PathTracer(): Tracer(), indirect_l(false) { }
+
+  PathTracer(int h, int w, float fov, bool il): Tracer(h, w, fov), indirect_l(il) { };
+
+  virtual ~PathTracer();
+
+  virtual vec3 trace_ray(Ray & r, vector<Figure *> & v_figures, vector<Light *> & v_lights, unsigned int rec_level) const;
+};
+
+#endif