Ray Casting for Bevy

A Bevy plugin for 3D ray casting against meshes. Used to build bevy_mod_picking. Contributions welcome!

Uses

This plugin makes it simple to create ray casting sources, such as a transform (first person, third person shooter), or screenspace coordinates (mouse picking). Rays are shot from these sources every frame using a bevy system, and the intersections are stored in the ray casting source's component.

• Only meshes that you mark with a component will be checked for intersections.
• You can define which ray casting source(s) should interact with which mesh(es) by marking grouped sources and targets with the same type.
• This plugin also provides some functionality to compute the intersection of rays with primitive shapes.
• Rudimentary acceleration is provided with opt-in bounding spheres.

Bevy Version Support

I intend to track the main branch of Bevy. PRs supporting this are welcome!

Examples

Mouse picking using a ray cast built using screen space coordinates:

cargo run --example mouse_picking

Ray casting from a camera using ray casts from the camera entity's GlobalTransform:

cargo run --example minimal

Optimization Mouse picking over many meshes using bounding volumes:

cargo run --example bounding_volume

Optimization Mouse picking over complicated mesh using simplified mesh:

cargo run --example simplified_mesh