Closed drcmda closed 1 year ago
I also have this issue but using native rapier3d.
@sebcrozet
I think I managed to reproduce this in the rapier3d "convex_polyhedron" example. in convex_polyhedron3.rs from current master (2e929bbc):
diff --git a/examples3d/convex_polyhedron3.rs b/examples3d/convex_polyhedron3.rs
index 980720a..2b6f03b 100644
--- a/examples3d/convex_polyhedron3.rs
+++ b/examples3d/convex_polyhedron3.rs
@@ -26,7 +26,7 @@ pub fn init_world(testbed: &mut Testbed) {
/*
* Create the polyhedra
*/
- let num = 5;
+ let num = 1;
let scale = 2.0;
let border_rad = 0.1;
@@ -46,7 +46,7 @@ pub fn init_world(testbed: &mut Testbed) {
let z = k as f32 * shift - centerz;
let mut points = Vec::new();
- for _ in 0..10 {
+ for _ in 0..1000 {
let pt: Point<f32> = distribution.sample(&mut rng);
points.push(pt * scale);
}
Do the triangles get too dense in the convex collider? Attached screen recording from this diff:
https://user-images.githubusercontent.com/5653426/220146907-d1e391a0-cfe9-4f1c-9952-04189d3fc587.mp4
Convex hulls seem to be a lot less prone to resting, the jumpyness/jittering is sometimes out of control. It seems to get worse when the geometry is sharp or has long, pointy tips. Here's an example:
https://user-images.githubusercontent.com/2223602/218308164-e4c9065f-557b-48d9-b3b8-b553934b5b20.mp4
This is using https://github.com/pmndrs/react-three-rapier which runs "@dimforge/rapier3d-compat": "0.11.1"
And a small repro: https://codesandbox.io/s/quiet-mountain-bi1cvj?file=/src/App.js