A raycasting backend for bevy_mod_picking that uses rapier for raycasting.

Usage

If a pointer passes through this camera's render target, it will automatically shoot rays into the rapier scene and will be able to pick things.

To ignore an entity, you can add [Pickable::IGNORE] to it, and it will be ignored during raycasting.

For fine-grained control, see the [RapierBackendSettings::require_markers] setting.

Limitations

Because raycasting is expensive, only the closest intersection will be reported. This means that unlike some UI, you cannot hover multiple rapier objects with a single pointer by configuring the [Pickable] component to not block lower elements but still emit events. As mentioned above, all that is supported is completely ignoring an entity with [Pickable::IGNORE].

This is probably not a meaningful limitation, as the feature is usually only used in UI where you might want a pointer to be able to pick multiple elements that are on top of each other. If are trying to build a UI out of rapier entities, beware, I suppose.