public boolean unLinkVertexDist(){
		if(bRigth.getID() == id){
			bLeft=this;
			bRigth=this;
			return true;
		}else{
			bLeft.setRigthDist(bRigth);
			bRigth.setLeftDist(bLeft);
			bLeft = this;
			bRigth = this;
			return false;
		}
	}