https://github.com/stefanasandei/ray-marching

⚡ a simple ray marcher
https://github.com/stefanasandei/ray-marching

Last synced: 4 months ago
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⚡ a simple ray marcher

• Host: GitHub
• URL: https://github.com/stefanasandei/ray-marching
• Owner: stefanasandei
• License: gpl-3.0
• Created: 2022-10-21T18:11:42.000Z (over 2 years ago)
• Default Branch: main
• Last Pushed: 2022-10-21T18:13:17.000Z (over 2 years ago)
• Last Synced: 2025-01-04T15:35:59.730Z (5 months ago)
• Language: Rust
• Size: 35.2 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# ray-marching ⚡

This is an implementation of the ray marching algorithm, a rendering technique.

## How it works - TLDR

Ray marching is like a simplified version of ray tracing. Instead of sending rays recursively into the scene and checking for collisions, it uses `signed distance field functions` to iteratively determine the distance to any object in the scene. The ray travels until the minimum distance is smaller than an `epsilon` value, 0.0001, which means we hit an object.

Some uses of it include 3D fractals and creating infinite scenes, not necessarily made out of triangles. Very few games use it.

![example](https://media.discordapp.net/attachments/833285965019217980/1033080399036952606/unknown.png)

## Resources

Here are some of the sources I used to learn this algorithm:

- https://iquilezles.org/articles/distfunctions/

- http://jamie-wong.com/2016/07/15/ray-marching-signed-distance-functions/

- https://www.shadertoy.com/view/Xds3zN

- https://www.shadertoy.com/view/3sySRK

## License

[GPLv3](LICENSE) © [Asandei Stefan](https://www.stefan-asandei.cf)