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

1 files changed, 41 insertions, 24 deletions

diff --git a/src_testbed/engine.rs b/src_testbed/engine.rs
index ca2d71f..ca1a2b8 100644
--- a/src_testbed/engine.rs
+++ b/src_testbed/engine.rs
@@ -350,33 +350,44 @@ impl GraphicsManager {
         color: Point3<f32>,
         out: &mut Vec<Node>,
     ) {
-        match collider.shape() {
-            Shape::Ball(ball) => {
-                out.push(Node::Ball(Ball::new(handle, ball.radius, color, window)))
-            }
-            Shape::Polygon(poly) => out.push(Node::Convex(Convex::new(
-                handle,
-                poly.vertices().to_vec(),
-                color,
-                window,
-            ))),
-            Shape::Cuboid(cuboid) => out.push(Node::Box(BoxNode::new(
+        let shape = collider.shape();
+
+        if let Some(ball) = shape.as_ball() {
+            out.push(Node::Ball(Ball::new(handle, ball.radius, color, window)))
+        }
+
+        // Shape::Polygon(poly) => out.push(Node::Convex(Convex::new(
+        //     handle,
+        //     poly.vertices().to_vec(),
+        //     color,
+        //     window,
+        // ))),
+
+        if let Some(cuboid) = shape.as_cuboid() {
+            out.push(Node::Box(BoxNode::new(
                 handle,
                 cuboid.half_extents,
                 color,
                 window,
-            ))),
-            Shape::Capsule(capsule) => {
-                out.push(Node::Capsule(Capsule::new(handle, capsule, color, window)))
-            }
-            Shape::Triangle(triangle) => out.push(Node::Mesh(Mesh::new(
+            )))
+        }
+
+        if let Some(capsule) = shape.as_capsule() {
+            out.push(Node::Capsule(Capsule::new(handle, capsule, color, window)))
+        }
+
+        if let Some(triangle) = shape.as_triangle() {
+            out.push(Node::Mesh(Mesh::new(
                 handle,
                 vec![triangle.a, triangle.b, triangle.c],
                 vec![Point3::new(0, 1, 2)],
                 color,
                 window,
-            ))),
-            Shape::Trimesh(trimesh) => out.push(Node::Mesh(Mesh::new(
+            )))
+        }
+
+        if let Some(trimesh) = shape.as_trimesh() {
+            out.push(Node::Mesh(Mesh::new(
                 handle,
                 trimesh.vertices().to_vec(),
                 trimesh
@@ -386,21 +397,27 @@ impl GraphicsManager {
                     .collect(),
                 color,
                 window,
-            ))),
-            Shape::HeightField(heightfield) => out.push(Node::HeightField(HeightField::new(
+            )))
+        }
+
+        if let Some(heightfield) = shape.as_heightfield() {
+            out.push(Node::HeightField(HeightField::new(
                 handle,
                 heightfield,
                 color,
                 window,
-            ))),
-            #[cfg(feature = "dim3")]
-            Shape::Cylinder(cylinder) => out.push(Node::Cylinder(Cylinder::new(
+            )))
+        }
+
+        #[cfg(feature = "dim3")]
+        if let Some(cylinder) = shape.as_cylinder() {
+            out.push(Node::Cylinder(Cylinder::new(
                 handle,
                 cylinder.half_height,
                 cylinder.radius,
                 color,
                 window,
-            ))),
+            )))
         }
     }