Collider shape: use a trait-object instead of an enum.

src/geometry/mod.rs

@@ -1,8 +1,7 @@
 //! Structures related to geometry: colliders, shapes, etc.
 
 pub use self::broad_phase_multi_sap::BroadPhase;
-pub use self::capsule::Capsule;
-pub use self::collider::{Collider, ColliderBuilder, Shape};
+pub use self::collider::{Collider, ColliderBuilder, ColliderShape};
 pub use self::collider_set::{ColliderHandle, ColliderSet};
 pub use self::contact::{
     Contact, ContactKinematics, ContactManifold, ContactPair, KinematicsCategory,
@@ -19,9 +18,12 @@ pub use self::narrow_phase::NarrowPhase;
 pub use self::polygon::Polygon;
 pub use self::proximity::ProximityPair;
 pub use self::proximity_detector::{DefaultProximityDispatcher, ProximityDispatcher};
+pub use self::rounded::Rounded;
 pub use self::trimesh::Trimesh;
 pub use ncollide::query::Proximity;
 
+/// A capsule shape.
+pub type Capsule = ncollide::shape::Capsule<f32>;
 /// A cuboid shape.
 pub type Cuboid = ncollide::shape::Cuboid<f32>;
 /// A triangle shape.
@@ -43,6 +45,8 @@ pub type ProximityEvent = ncollide::pipeline::ProximityEvent<ColliderHandle>;
 pub type Ray = ncollide::query::Ray<f32>;
 /// The intersection between a ray and a  collider.
 pub type RayIntersection = ncollide::query::RayIntersection<f32>;
+/// The the projection of a point on a collider.
+pub type PointProjection = ncollide::query::PointProjection<f32>;
 
 #[cfg(feature = "simd-is-enabled")]
 pub(crate) use self::ball::WBall;
@@ -61,10 +65,10 @@ pub(crate) use self::polyhedron_feature3d::PolyhedronFace;
 pub(crate) use self::waabb::{WRay, WAABB};
 pub(crate) use self::wquadtree::WQuadtree;
 //pub(crate) use self::z_order::z_cmp_floats;
+pub use self::shape::{Shape, ShapeType};
 
 mod ball;
 mod broad_phase_multi_sap;
-mod capsule;
 mod collider;
 mod collider_set;
 mod contact;
@@ -89,3 +93,5 @@ mod wquadtree;
 //mod z_order;
 #[cfg(feature = "dim3")]
 mod polygonal_feature_map;
+mod rounded;
+mod shape;