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diff --git a/hw6/src/pointLightsource.cpp b/hw6/src/pointLightsource.cpp
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+/******************************************************************/
+/* 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 "constants.h"
+#include "pointLightsource.h"
+
+//////////////////
+// Constructors //
+//////////////////
+pointLightsource::pointLightsource(const vec3d& position, const color& power, const vec3d& attenuation)
+{
+  _position = position;
+  _power = power;
+  _attenuation = attenuation;
+}
+
+
+/////////////
+// Methods //
+/////////////
+lightSample pointLightsource::intensityAt(const vec3d& point) const
+{
+  vec3d direction = point - _position;
+  float distance = direction.length();
+  float attenuation = ((_attenuation[2]*distance + _attenuation[1])*distance + _attenuation[0]);
+
+  // Done.
+  return lightSample(direction, _power / attenuation, distance);
+}
+
+
+lightSample pointLightsource::emittanceAt(const vec3d& point, float r1, float r2) const
+{
+  vec3d direction = point - _position;
+  float distance = direction.length();
+
+  // emittance == _power / area sphere
+  // pdf = 1.0 (there is no selection)
+  // foreshortning = 1.0 (everything is normal to the point)
+  return lightSample(direction, _power / (4.0f * PI), distance, 1.0f, 1.0f);  
+}
+
+/////////////////////
+// Private Methods //
+/////////////////////
+void pointLightsource::_print(std::ostream& s) const
+{
+  s << "Point Lightsource: position=" << _position << ", power=" << _power << ", attenuation=" << _attenuation;  
+}