From db072ad4dc181eca5a1458656b130beb43f475bf Mon Sep 17 00:00:00 2001
From: 53hornet <53hornet@gmail.com>
Date: Sat, 2 Feb 2019 23:33:15 -0500
Subject: Init.

---
 hw6/src/ray_util.cpp | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 hw6/src/ray_util.cpp

(limited to 'hw6/src/ray_util.cpp')

diff --git a/hw6/src/ray_util.cpp b/hw6/src/ray_util.cpp
new file mode 100644
index 0000000..580f249
--- /dev/null
+++ b/hw6/src/ray_util.cpp
@@ -0,0 +1,27 @@
+/******************************************************************/
+/* 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 "ray_util.h"
+
+
+ray createRay(const intersectionPoint& ip, const vec3d& dir)
+{
+  return ray(ip.position() + EPSILON * dir, dir);
+}
+
+
+ray reflectRay(const intersectionPoint& ip)
+{
+  // compute reflected direction
+  // Note: ip.direction points toward ip point!
+  vec3d reflectedDir = ip.direction() - 2.0f * (ip.normal().dot(ip.direction())) * ip.normal(); 
+
+  // create ray
+  return createRay(ip, reflectedDir);
+}
-- 
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