Ray-Tracing-with-python-from-Scratch this code is not optimised at all, can't run in real time , part 1: Intro video: https://www.youtube.com/watch?v=zp-8y4MVqE4 part 2: Simple Sphere video-2: https://www.youtube.com/watch?v=zYclZOol04A&t=138s part 3: Light and Shading video-3: https://www.youtube.com/watch?v=6j2zvWbGp4A&t=4s part 4: Plane, Shadow, Reflection and refraction part 5: Reflection and Refraction