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# Vanrijn

This project is very much a work-in-progress and at this point.

Vanrijn is (or at least will be) a [physically based](https://en.wikipedia.org/wiki/Physically_based_rendering)
[ray tracer](https://en.wikipedia.org/wiki/Ray_tracing_(graphics)). Many thanks to the
authors of the book
["Physically Based Rendering: From Theory to Implementation](https://www.pbrt.org/) from
which many of the algorithms used here are taken. This is, however _not_ a Rust port of
the C++ PBRT rederer described in that book.

This crate is structured as a library; main.rs is just a glorified test harness which
shows an example of using the library to render a scene. It uses SDL2 to display the
rendered image.

On Ubuntu 19.04, if you have the libsdl2-dev package installed you
should be able to run `cargo run --release -- --size 800 600` and see
a window with a test scene rendered into it. In theory it should work
on any platform with SDL2 installed but I've only tested it on Ubuntu
Linux.

![](.github/output3.png?raw=true "Test Image 3")
![](.github/output.png?raw=true "Test Image 1")
![](.github/output2.png?raw=true "Test Image")