//! Shapes able to be used in Collision Detection.
//!
//! The `ID` of shapes is used to distinguish the same shape following different transforms, having nothing to do with the `ID` of the [`QuadTree`](crate::QuadTree).
//!
//! The `ID` of the `QuadTree` is used to distinguish different `QuadTree`s in the `World`, which is determined by the `ID` of [`QuadTreePlugin`](crate::QuadTreePlugin).
pub use CollisionCircle;
pub use CollisionRect;
pub use CollisionRotatedRect;