CS 6620 - Fall 2014 - Ray Tracing for Graphics

Project 2 - Shading

In this project we add shading to our ray tracer.


XML Scene Format

Our XML scene has some additional descriptions for materials and lights.

    <!-- Objects -->
    <object type="sphere" name="sphere1" material="mtl1">
      <scale x="25" y="25" z="3"/>
      <translate x="0" y="50" z="0"/>
    <object type="sphere" name="sphere2" material="mtl2">
      <scale value="8.0"/>
      <rotate angle="30" y="1"/>
      <translate x="0" y="50" z="5.1"/>
      <object type="sphere" name="sphere3" material="mtl1">
        <scale value="0.2"/>
        <translate x="0" y="0" z="1.2"/>

    <!-- Materials -->
    <material type="blinn" name="mtl1">
      <diffuse  r="0.8" g="0.2" b="0.2"/>
      <specular r="1.0" g="1.0" b="1.0" value="0.7"/>
      <glossiness value="20"/>
    <material type="blinn" name="mtl2">
      <diffuse  r="0.1" g="0.1" b="0.9"/>
      <specular r="0.9" g="0.9" b="1.0" value="0.8"/>
      <glossiness value="10"/>

    <!-- Lights -->
    <light type="ambient" name="ambientLight">
      <intensity value="0.1"/>
    <light type="direct" name="directionalLight">
      <intensity value="0.5"/>
      <direction x="1" y="0.5" z="-1"/>
    <light type="point" name="pointLight">
      <intensity value="0.5"/>
      <position x="140" y="40" z="70"/>

    <position x="0" y="0" z="10"/>
    <target x="0" y="50" z="0"/>
    <up x="0" y="0" z="1"/>
    <fov value="40"/>
    <width value="800"/>
    <height value="600"/>

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 some of 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.

Optional Feature Suggestions

Student Project Pages