###Explaination:
- part one implemented the Phong lighting model
a. scene signature
b. diffuse and ambient
c. phong lighting model - part two implemented shadows and mirror reflection
- Besides, we implemented:
a. Flattening scene graph
b. Refraction
c. Anti-aliasing
d. Additional primitives (Cylinders and cones)
e. Texture mapping for Square and Sphere
f. Area light sourced (Soft Shadow) - final scence

###Note:
Different effects are shown in part1 and part2 folder in pictures.
More details can be found in report.