AutoCAD.net: 求空间两曲线交点

引自：http://www.objectarx.net/bbs/archiver/?tid-410.html

using System;
using System.Collections.Generic;
using System.Text;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.Colors;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.EditorInput;
using Autodesk.AutoCAD.Geometry;
using Autodesk.AutoCAD.Runtime;
using AsApp = Autodesk.AutoCAD.ApplicationServices.Application;
using DsTM = Autodesk.AutoCAD.DatabaseServices.TransactionManager;
using Autodesk.AutoCAD.GraphicsInterface;
using Autodesk.AutoCAD.Interop;

namespace ObjectArxNet.Test