[LayaNative 2.0]laya3d的物理属性在哪里设置？求大神指点啊

let ball =  this.scene.getChildByName('ball') as Laya.MeshSprite3D;

let ballRigidboy = ball.getComponent(Laya.Rigidbody3D) as Laya.Rigidbody3D;

ballRigidboy.friction = 1;

ballRigidboy.rollingFriction = 1;

ballRigidboy.restitution =1;