onCollisionEnter(obj: Laya.Collision) {
let node: Laya.MeshSprite3D = obj.other.owner as Laya.MeshSprite3D;
let owner: Laya.MeshSprite3D = this.owner as Laya.MeshSprite3D;
let position = obj.contacts[0].positionOnA; // 碰撞位置
}
onTriggerEnter(obj) 、、如何获取碰撞位置？
