[Cad3DPoint.AngleBetween3Points method public static double AngleBetween3Points(Cad3DPoint a, Cad3DPoint b, Cad3DPoint c) 也可以看看 class Cad3DPoint 命名空间 Aspose.CAD.FileFormats.Cad.CadObjects 部件 Aspose.CAD]
