In unity dots physics,is there any way to scale mesh collider?

Questions & Answers
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1

In traditional physics engine,we can scale the mesh collider by changing the scale in Transform property. What about in dots physics,I’ve tried adding the scale property but it doesn’t work.

4

As of Unity Physics 1.3 you can scale any collider at runtime with Collider.BakeTransform.

2

You can cast collider.ColliderPtr to a specific collider pointer type to change it’s data directly this way.

Note: unsafe code needs to be enabled in Player Settings for this to compile.

using Unity.Entities;
using Unity.Mathematics;
using Unity.Physics;

public partial class ScaleAllSpheresSystem : SystemBase
{
    protected override void OnUpdate()
    {
        float r = 1f + math.sin((float)SystemAPI.Time.ElapsedTime);
        new ScaleJob { r = r }.ScheduleParallel();
    }

    [Unity.Burst.BurstCompile]
    //[WithAll( typeof(YOUR_TAG_COMPONENT_SO_NOT_ALL_SPHERES_ARE_INCLUDED) )]
    //[WithNone( typeof() )]
    partial struct ScaleJob : IJobEntity
    {
        public float r;
        public unsafe void Execute(ref PhysicsCollider collider)
        {
            if (collider.Value.Value.Type == ColliderType.Sphere)
            {
                var sphereColliderPtr = (SphereCollider*) collider.ColliderPtr;
                var geo = sphereColliderPtr->Geometry;
                geo.Radius = r;
                sphereColliderPtr->Geometry = geo;
            }
        }
    }
}
3

Thanks!But exactly I want to scale the MESＨ COLLIDER whitch doesn’t have the “Geometry property”.