AutoCAD 2010的C＃实体放样示例——天圆地方
2010的那两个托管DLL文件中，增加了对“放样”和“扫琼”的支持，使得我们用C＃进行三维建模的手段更加丰富了！以前的CAD版本，用C＃能进行“放样曲面”和“扫琼曲面”的操作，但不能进行实体的操作。// 放样示例：天圆地方.
public void Test()
{
Editor ed = Application.DocumentManager.MdiActiveDocument.Editor;
Polyline ent1 = new Polyline();
ent1.AddVertexAt(0, new Point2d(50, 50), 0, 0, 0);
ent1.AddVertexAt(1, new Point2d(-50, 50), 0, 0, 0);
ent1.AddVertexAt(2, new Point2d(-50, -50), 0, 0, 0);
ent1.AddVertexAt(3, new Point2d(50, -50), 0, 0, 0);
ent1.Closed = true;
Circle ent2 = new Circle(new Point3d(0, 0, 200), new Vector3d(0, 0, 1), 30);
Entity[] crossEnts = new Entity;
crossEnts.SetValue(ent1, 0);
crossEnts.SetValue(ent2, 1);
Entity[] guideCurs = new Entity;
LoftOptions loftOpt = new LoftOptions();
Solid3d solid3dEnt = new Solid3d();
solid3dEnt.RecordHistory = true;
solid3dEnt.CreateLoftedSolid(crossEnts, guideCurs, null, loftOpt);
AppendEntity(solid3dEnt);
}
ObjectId AppendEntity(Entity ent)
{
Database db = HostApplicationServices.WorkingDatabase;
ObjectId entId;
using (Transaction trans = db.TransactionManager.StartTransaction())
{
BlockTable bt = (BlockTable)trans.GetObject(db.BlockTableId,
OpenMode.ForRead);
BlockTableRecord btr = (BlockTableRecord)trans.GetObject
(bt, OpenMode.ForWrite);
entId = btr.AppendEntity(ent);
trans.AddNewlyCreatedDBObject(ent, true);
trans.Commit();
}
return entId;
}
对3d的东西一向不太熟悉，相信各位朋友也一样，
但在AutoCad不断加强3d功能的现在，确实应该引起重视
也希望ahlzl斑竹多发一些相关的东西，：）
紧急求助，需要一个VBA的例子，请ahlzl 斑竹不吝赐教呀！！！
直接loft的天圆地方实际做钣金是做不出来的，我把它分成4个三角面，4个曲面，组合出来，这样就和实际钣金做出来的一样了
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