/// <summary> /// 输出标准STL(ASCII)格式 /// </summary> /// <returns></returns> public override string ToString() { string normalLine = "facet normal " + Normal.ToString() + "\n"; string outLoopLine = "outer loop" + "\n"; string p1Line = "vertex " + P1.ToXYZString() + "\n"; string p2Line = "vertex " + P2.ToXYZString() + "\n"; string p3Line = "vertex " + P3.ToXYZString() + "\n"; string endLoopLine = "endloop" + "\n"; string endFacet = "endfacet" + "\n"; return(normalLine + outLoopLine + p1Line + p2Line + p3Line + endLoopLine + endFacet); }