1 files changed, 47 insertions, 0 deletions
diff --git a/hw6/src/raycasting.cpp b/hw6/src/raycasting.cpp
new file mode 100644
index 0000000..e533d5a
--- /dev/null
+++ b/hw6/src/raycasting.cpp
@@ -0,0 +1,47 @@
+/******************************************************************/
+/* This file is part of the homework assignments for CSCI-427/527 */
+/* at The College of William & Mary and authored by Pieter Peers. */
+/* No part of this file, whether altered or in original form, can */
+/* be distributed or used outside the context of CSCI-427/527     */
+/* without consent of either the College of William & Mary or     */
+/* Pieter Peers.                                                  */
+/******************************************************************/
+#include "raycasting.h"
+
+/////////////
+// Methods //
+/////////////
+image raycasting::render(const scene& s) const
+{
+  image result(s.getCamera().width(), s.getCamera().height());
+
+  // for every pixel
+  for(image::size_type y=0; y < result.height(); y++)
+    for(image::size_type x=0; x < result.width(); x++)
+    {
+      // generate view ray
+      ray r = s.getCamera()(x,y);
+
+      // intersect scene
+      intersectionPoint ip = s.intersect(r);
+
+      // shade pixel
+      if(ip.isHit())
+      {
+	// for each light source
+	for(unsigned int l=0; l < s.numberOfLightsources(); l++)
+	{
+	  // connect to light source
+	  lightSample ls = s.getLightsource(l).intensityAt(ip.position());
+
+	  // shade
+	  result(x,y) += ip.shade(ls);
+	}
+      }
+      else result(x,y) = color(0.0f, 0.0f, 0.0f);
+    }
+  
+
+  // Done.
+  return result;
+}