elias/big_space_with_trim
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Merge branch 'main' of https://github.com/aevyrie/big_space

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Aevyrie Roessler 2023-01-29 01:10:57 -08:00
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@ -10,12 +10,25 @@ A floating origin plugin for [Bevy](https://github.com/bevyengine/bevy).
https://user-images.githubusercontent.com/2632925/211051046-6fc7db1d-dcf8-4d71-8bcf-d8f55ec64ab3.mp4
### [Read the docs](https://docs.rs/big_space)
</div>
## Features
Lots of space to play in.
This is a simple floating origin plugin, useful if you want to work with very, very large scales. It works with bevy's existing `f32`-based `Transform`s, which means it's largely compatible with the bevy ecosystem.
The plugin is generic over a few integer types, to trade off scale and precision for memory use. Some fun numbers with a worst case precision of 0.5mm:
- `i8`: 2,560 km = 74% of the diameter of the Moon
- `i16`: 655,350 km = 85% of the diameter of the Moon's orbit around Earth
- `i32`: 0.0045 light years = ~4 times the width of the solar system
- `i64`: 19.5 million light years = ~100 times the width of the milky way galaxy
- `i128`: 3.6e+26 light years = ~3.9e+15 times the width of the observable universe
From the docs: https://docs.rs/big_space/latest/big_space/struct.GridCell.html
# Bevy Version Support
I intend to track the `main` branch of Bevy. PRs supporting this are welcome!