PA 7 Ray Tracing

• PA7 Ray Tracing is due on Dec 04, 11:59pm
• Code: cs451-PA7.7z Δ
• This assignment will help you deepen the understanding of the following topics
  • Ray generation from refraction and reflection
  • Ray-sphere Intersection
  • Soft shadows
  • Basic Lighting (Diffusion, Specular, Ambient, directional light, point light, spot light, etc)
• What to submit
  • Your code (with everything)
  • You RT file (name it cs451_pa7.rt)
  • Rendered images. Make sure that you name your images as follows
    • 3 images with 1, 10, 100 rays per pixel with size 680 by 680
      • name these images cs451_pa7_0001.jpg, cs451_pa7_0010.jpg, cs451_pa7_0100.jpg
  • README.txt file in cs451-PA7 folder with the following information
    • The OS and compiler that you compile your code
    • How to build your program
    • Tasks that you completed
    • Tasks that you started but did not complete
    • Tasks that you did not start
    • What are the known bugs in your code?
• How to submit
  • email me (jmlien@cs.gmu.edu) and your TA (ple13@masonlive.gmu.edu) a link to all source code, images and README.txt in a file named cs451_pa7_[your last name].zip
  • Please do not send us the file directly

Tasks

• Task 1 (20%): Compute Intersection between ray and the spheres
• Task 2 (25%): Determine the reflection color
• Task 3 (25%): Determine the refraction color
• Task 4 (25%): create soft shadows
• Task 5 (5%): Create your own *.RT file.

Examples

In both examples, the following values are used in raytracer.cpp

 #define MAX_RAY_DEPTH 10
 #define SHADOW_SAMPLE_SIZE 20

The .rt files used for creating these examples: example 1, example 2

example 1

1 ray per pixel
10 rays per pixel
30 rays per pixel
30 rays per pixel with SHADOW_SAMPLE_SIZE=50 for smoother shadow
100 rays per pixel with SHADOW_SAMPLE_SIZE=50

example 2

1 ray per pixel
10 rays per pixel
30 rays per pixel
30 rays per pixel with SHADOW_SAMPLE_SIZE=50 for smoother shadow
100 rays per pixel with SHADOW_SAMPLE_SIZE=50