I have recently started working on https://github.com/Olle-Lukowski/bevy_contrib_raycast to allow for raycasts on both 2d and 3d primitives. I thought I would open up a tracking issue here, so more people can review / help out with the code.

Here is a checklist of what needs to be done:

• Implement RayCast2d for all 2D primitives (quick and dirty, to get a working example)
• Implement RayCast3d for all 3D primitives (quick and dirty, to get a working example)
• Optimize and clean up 2D impls.
• Optimize and clean up 3D impls.
• Add tests.
• Write some docs.
• Get reviews, fix any issues.