let colliderShape = new Laya.CannonBoxColliderShape(phy.colliderShape.sizeX, phy.colliderShape.sizeY, phy.colliderShape.sizeZ);
phy.colliderShape.localOffset.cloneTo(colliderShape.localOffset);
Laya.Vector3.scale(colliderShape.localOffset, 0.5,
colliderShape.localOffset);//这里还需要手动缩放这个偏移值才正常
