CS 6620 - Fall 2019 - Ray Tracing for Graphics

Project 4 - Reflections and Refractions

In this project we add reflections and refractions to our ray tracer.

Requirements

Render one or more scenes with objects that have reflections, and objects that have refractions.

XML Scene Format

Our XML scene has some additional descriptions for materials that specify reflection and refraction properties.

<!-- Reflection color -->
<reflection r="1" g="1" b="0.8" value="0.7"/>

<!-- Refraction color and index of refraction -->
<refraction value="0.8" index="1.52"/>

<!-- Absorption coefficients -->
<absorption r="0.01" g="0.001" b="0.0001"/>

Source Code

The following source code files are provided to help you with this and upcoming projects. You are not required to use them, but it is highly recommened that you use them and refrain from modifying them. Some of these files include additional code as compared to the same files in the previous project, so make sure to download them all again.

scene.h: Includes base classes for scene management.
xmlload.cpp: Includes the LoadScene() function that parses a given scene XML file using the TinyXML library.
materials.h: Includes the description of the MtlBlinn class used by the xmlload.cpp file.

Test Scenes

The following scene files are provided to help you test your implementation. You can also prepare other scenes to show your work.

Box Scene: A Box scene with non-uniformly scaled spheres as walls. It includes two balls inside the box, one of which has a reflective material and the other one has a refractive material.

Student Project Pages