A simple raytracer in exactly 450 lines of C-code.
- Sphere-Ray Intersection
- Materials
- Diffuse and Specular Lighting
- Point, Directional, and Ambient Lights
- Custom Floating-Point Vector Library
- Output to image with stb_image
- Gradient Background
- Watermark
Find a compiler and build tinyray.c. Run the executable and it'll create an image called 'output.bmp' in that directory. Simple as that!
Some examples:
# Building with gcc
$ gcc tinyray.c -o "tinyray"
# Building with cl
> cl tinyray.c
tinyray uses the excellent stb_image_write library for outputting a bitmap image.
Public Domain - Do whatever you like!
Credit would be very much appreciated though :)
I created this toy raytracer to learn about basic raytracing (and for fun, of course), taking inspiration from the following resources:
- Gabriel Gambetta: Computer Graphics From Scratch
- Scratch A Pixel: Minimal Ray Tracing
- ssloy's tinyraytracer
The first link is especially helpful in understanding how raytracing works from a mathematical perspective.
I created this for fun for the UoA ENGGEN 131 Art Challenge