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diff --git a/hw5/src/pointLightsource.cpp b/hw5/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
+{
+  // HW5: Implement this. Computes the intensity from the point
+  //      light source toward the 'point' taking in account attenuation.
+  // Modifies: nothing.
+  // Returns: light sample (pass: 1) direction, 2) power/color
+  //          of the incident lighting, and 3) distance between
+  //          the light source and the point).
+  vec3d direction = (point - _position).normalize();
+  float distance = _position.distance(point);
+  color emittance = _power / (_attenuation.x +
+                              _attenuation.y * distance +
+                              _attenuation.z * _position.squared_distance(point));
+  return lightSample(direction, emittance, distance);
+}
+
+
+/////////////////////
+// Private Methods //
+/////////////////////
+void pointLightsource::_print(std::ostream& s) const
+{
+  s << "Point Lightsource: position=" << _position << ", power=" << _power << ", attenuation=" << _attenuation;
+}