• object selection,
• hidden surface removal,
• lighting, and
• shading.

If you form a pair, you must specify the ``division of labor'' (e.g., who did what) in your assignment TEAM file (scores will be divided equally, however).

• Implement object selection (picking).
• Implement hidden surface removal (use both your own calculations and OpenGL's).
• Add lighting and shading to your object viewer.
  You will be asked to rotate a lit object: note which faces reflect light when the object rotates. If the lit faces rotate, you're doing it wrong---the light source should appear stationary, not revolving around the object as you rotate, watch out for this common bug!
• Provide toggle buttons allowing the user to switch between three representations of the objects within the window:
  • wireframe
  • facetted (flat shading)
  • smooth (Gouraud shading)
  • interpolated (Phong, Blinn shading; start with Lambertian)
  Interpolated shading should be rendered via GLSL shaders. 605 students should also implement additional shaders, such as toon shading and Ward's BRDF, as shown below (my tangent vectors aren't quite right).

• Use OpenGL to implement facetted and smooth (Gouraud) shading. Implement interpolated lighting via GLSL code.

1. Names of all participants: Course Id--Section No.
   Name:
   Assignment No.
   
2. Assignment description

1. Program features
2. User guide