Assignment #3: Ray tracing

FULL NAME: Zexuan Luo


MANDATORY FEATURES
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<Under "Status" please indicate whether it has been implemented and is
functioning correctly.  If not, please explain the current status.>

Feature:                                 Status: finish? (yes/no)
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1) Ray tracing triangles                  Yes

2) Ray tracing sphere                     Yes

3) Triangle Phong Shading                 Yes

4) Sphere Phong Shading                   Yes

5) Shadows rays                           Yes

6) Still images                           Yes
   
7) Extra Credit (up to 20 points)
   I have done Good antialiasing. I use super sampling to achieve that. I have made sample size into 2. If my computer could be better, I believe that I can set the sample size to be a higher number. Pictures in the file are outcomes of the super sampling.