function createToolPath(
  geometry: BufferGeometry,   //将要评估的几何体
  direction: 'px'|'nx'|'py'|'ny'|'pz'|'nz',  //加工方向
  startDepth: number,   //起始高度
  endDepth: number,     //终点高度
  layerHeight: number,   //层厚
  toolDiameter: number,   //刀径
  cutRatio: number,       //平面切削比例
  toolRadius: number,     //刀头半径
  wallTol: number,       //切削边余量
  bottomTol: number,    //底部余量
  mask: Object3D | undefined  //切削面罩
)