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use na::Point3;
use rapier3d::dynamics::{BodyStatus, JointSet, RigidBodyBuilder, RigidBodySet};
use rapier3d::geometry::{ColliderBuilder, ColliderSet};
use rapier_testbed3d::Testbed;
pub fn init_world(testbed: &mut Testbed) {
/*
* World
*/
let mut bodies = RigidBodySet::new();
let mut colliders = ColliderSet::new();
let joints = JointSet::new();
/*
* Create the balls
*/
let num = 20;
let rad = 1.0;
let shift = rad * 2.0 + 1.0;
let centerx = shift * (num as f32) / 2.0;
let centery = shift / 2.0;
let centerz = shift * (num as f32) / 2.0;
for i in 0..num {
for j in 0usize..num {
for k in 0..num {
let x = i as f32 * shift - centerx;
let y = j as f32 * shift + centery;
let z = k as f32 * shift - centerz;
let status = if j == 0 {
BodyStatus::Static
} else {
BodyStatus::Dynamic
};
let density = 0.477;
// Build the rigid body.
let rigid_body = RigidBodyBuilder::new(status).translation(x, y, z).build();
let handle = bodies.insert(rigid_body);
let collider = ColliderBuilder::ball(rad).density(density).build();
colliders.insert(collider, handle, &mut bodies);
}
}
}
/*
* Set up the testbed.
*/
testbed.set_world(bodies, colliders, joints);
testbed.look_at(Point3::new(100.0, 100.0, 100.0), Point3::origin());
}
fn main() {
let testbed = Testbed::from_builders(0, vec![("Balls", init_world)]);
testbed.run()
}
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