crnlib/crn_ray.h

@@ -0,0 +1,52 @@
+// File: crn_ray.h
+// See Copyright Notice and license at the end of inc/crnlib.h
+#pragma once
+#include "crn_vec.h"
+
+namespace crnlib
+{
+   template<typename vector_type>
+   class ray
+   {
+   public:
+      typedef vector_type vector_t;
+      typedef typename vector_type::scalar_type scalar_type;
+
+      inline ray() { }
+      inline ray(eClear) { clear(); }
+      inline ray(const vector_type& origin, const vector_type& direction) : m_origin(origin), m_direction(direction) { }
+
+      inline void clear()
+      {
+         m_origin.clear();
+         m_direction.clear();
+      }
+
+      inline const vector_type& get_origin(void) const { return m_origin; }
+      inline void set_origin(const vector_type& origin) { m_origin = origin; }
+
+      inline const vector_type& get_direction(void) const { return m_direction; }
+      inline void set_direction(const vector_type& direction) { m_direction = direction; }
+
+      inline scalar_type set_endpoints(const vector_type& start, const vector_type& end, const vector_type& def)
+      {
+         m_origin = start;
+
+         m_direction = end - start;
+         return m_direction.normalize(&def);
+      }
+
+      inline vector_type eval(scalar_type t) const
+      {
+         return m_origin + m_direction * t;
+      }
+
+   private:
+      vector_type m_origin;
+      vector_type m_direction;
+   };
+
+   typedef ray<vec2F> ray2F;
+   typedef ray<vec3F> ray3F;
+
+} // namespace crnlib