In the last post I showed my finished ray-tracer. Now I’m going to show the steps I took to get there.
I started creating Lines and Spheres in geometry.py and generating an PNG image with PIL in render.py. The first image I was able to generate was:
Adding colors and an extra sphere was easy:
Then I tried adding a Horizontal plane:
Making it checkered:
But it was in the wrong place:
After fixing the positions:
Next I tried implementing shadows, it took me a few tries:
How could I make the spheres look 3D? I followed the part about diffuse lighting in these slides.
Swapping a 2.0 with a 2 in a division in render.py resulted in:
Next step was adding reflections, it was easier then shadows: