CPSC 102-001 Computer Science II
(Advanced C Programming)
Fall 2010
09:05-09:55MW Daniel 415
Assignment 7

Objectives:
To implement a simple ray caster
Due date:
11/22/10

What to hand in:
A tar.gz archive of your asg7/ directory, including:
  1. A README file containing
    1. Course id--section no
    2. Name
    3. Assignment description
    4. Brief solution description (e.g., program design, description of algorithm, etc., however appropriate).
    5. Lessons learned, identified interesting features of your program
    6. Any special usage instructions
  2. Makefile
  3. source code (.h headers and .cpp source)
  4. object code (do a make clean before tar)
How to hand in:
See handin notes

Description:
  1. Using the model_t object's find_closest() function, implement a simple (one-hit) ray tracer (known as a ray caster) to process the model file given below.

  2. Use the templated rgb_t pixel class discussed in class.
  3. Sample input:
    camera cam1
{
   pixeldim 640 480
   worlddim 8   6
   viewpoint 4 3 6
}

material green
{
   ambient 0 5 0
}

material yellow
{
   ambient  5 4 0
   diffuse  4 4 0
  specular  1 1 1
}

plane leftwall
{
   material green
   normal 3 0 1
   point  0 0 0
}

plane rightwall
{
   material yellow
   normal -3 0 1
   point   8 0 0
}

material gray
{
   ambient 2 2 2
}

plane floor
{
   material gray
   normal 0 1 0
   point  0 -0.2 0
}
  4. Sample output:

  5. Changing the left and right wall normals' z-components to 0.1, i.e., 
    plane leftwall
{
   material green
   normal 3 0 0.1
   point  0 0 0
}

plane rightwall
{
   material yellow
   normal -3 0 0.1
   point   8 0 0
}
    and re-running the code produces the image below: