Cat's Eye Marble

I attempted to implement refraction using snells law to simulate transparent objects I added kt, transparency constant for materials (materials.h, json files) I made the bulk of the changes in raycolor.cpp where I added terms and calculations for colour derived from refracted rays I hard coded the index of refraction to a value that I thought produced the best looking results I also added the function “refract” to calculate and return a refracted ray

Acknowledgements:

I did not use any materials outside of the code from assignment 3 which I modified