First public release of Rapier.

examples2d/balls2.rs

@@ -0,0 +1,68 @@
+use na::Point2;
+use rapier2d::dynamics::{BodyStatus, JointSet, RigidBodyBuilder, RigidBodySet};
+use rapier2d::geometry::{ColliderBuilder, ColliderSet};
+use rapier_testbed2d::Testbed;
+
+pub fn init_world(testbed: &mut Testbed) {
+    /*
+     * World
+     */
+    let mut bodies = RigidBodySet::new();
+    let mut colliders = ColliderSet::new();
+    let joints = JointSet::new();
+    /*
+     * Ground
+     */
+    let _ground_size = 25.0;
+
+    /*
+    let ground_shape = ShapeHandle::new(Cuboid::new(Vector2::new(ground_size, 1.0)));
+
+    let ground_handle = bodies.insert(Ground::new());
+    let co = ColliderDesc::new(ground_shape)
+        .translation(-Vector2::y())
+        .build(BodyPartHandle(ground_handle, 0));
+    colliders.insert(co);
+    */
+
+    /*
+     * Create the balls
+     */
+    let num = 50;
+    let rad = 1.0;
+
+    let shiftx = rad * 2.5;
+    let shifty = rad * 2.0;
+    let centerx = shiftx * (num as f32) / 2.0;
+    let centery = shifty / 2.0;
+
+    for i in 0..num {
+        for j in 0usize..num * 5 {
+            let x = i as f32 * shiftx - centerx;
+            let y = j as f32 * shifty + centery;
+
+            let status = if j == 0 {
+                BodyStatus::Static
+            } else {
+                BodyStatus::Dynamic
+            };
+
+            // Build the rigid body.
+            let rigid_body = RigidBodyBuilder::new(status).translation(x, y).build();
+            let handle = bodies.insert(rigid_body);
+            let collider = ColliderBuilder::ball(rad).density(1.0).build();
+            colliders.insert(collider, handle, &mut bodies);
+        }
+    }
+
+    /*
+     * Set up the testbed.
+     */
+    testbed.set_world(bodies, colliders, joints);
+    testbed.look_at(Point2::new(0.0, 2.5), 5.0);
+}
+
+fn main() {
+    let testbed = Testbed::from_builders(0, vec![("Balls", init_world)]);
+    testbed.run()
+}