CS 6620
Project 2

Required Images

This is the final image with the eye point above the plane.

This is the final image with the eye point below the plane.

Code Listing

My source code for project 2 can be found here.

Creative Images

My first creative image contains 3 point light sources, a ground plane, and many spheres. I thought it was cool because the lights are red, green, and blue, and this is apparent in the shadows cast on the plane by the spheres.

My second creative image is just 200 spheres. The location, radius, and color of each of the spheres is randomly generated.

Design Choices

Below are some of the design decisions I made for this project:

• I decided to implement all of the base classes specified in the notes, including the primitive intermediate class. I thought it would be useful to have the simple abstract base classes to use. I also chose to leave all of the data as public, so that I could directly access it. I thought it would be easier than writing class methods to do this.
• I also chose to use floats and offset the intersection points by .001, instead of using doubles and .000001.
• As seen in the second image above, I chose to implement the Lambertian shading using the two-sided lighting. I took the dot product of the normal with the light direction, so the shadows are visible from the other side.
• I also chose to use the unit vector method for the ray-sphere intersection. It seemed to be the easiest to implement and not much more costly than the most optimized method.

Extra Credit

I didn't get a chance to implement any of the extra credit.