Allow using polylines as a collider shape.

examples3d/all_examples3.rs

@@ -13,6 +13,7 @@ use std::cmp::Ordering;
 mod collision_groups3;
 mod compound3;
 mod convex_decomposition3;
+mod convex_polyhedron3;
 mod damping3;
 mod debug_add_remove_collider3;
 mod debug_boxes3;
@@ -76,6 +77,7 @@ pub fn main() {
         ("Collision groups", collision_groups3::init_world),
         ("Compound", compound3::init_world),
         ("Convex decomposition", convex_decomposition3::init_world),
+        ("Convex polyhedron", convex_polyhedron3::init_world),
         ("Damping", damping3::init_world),
         ("Domino", domino3::init_world),
         ("Heightfield", heightfield3::init_world),