public void CreateExtrudedSolid()
{
// 在内存中创建拉伸截面对象.
Circle ent = new Circle(new Point3d(200, 100, 0), Vector3d.ZAxis, 100);
// 截面对象添加到对象集合.
DBObjectCollection ents = new DBObjectCollection();
ents.Add(ent);
// 在内存中创建面域对象集合.
DBObjectCollection regions = Region.CreateFromCurves(ents);
// 实施拉伸，并将拉伸体添加到图形数据库.
ObjectId extrudedSolidId = ModelSpace.AddExtrudedSolid((Region)regions[0], 500, 0);
}
public void CreateExtrudeAlongPath()
{
// 在内存中创建拉伸截面对象.
Circle ent = new Circle(new Point3d(200, 0, 0), Vector3d.ZAxis, 100);
// 截面对象添加到对象集合.
DBObjectCollection ents = new DBObjectCollection();
ents.Add(ent);
// 在内存中创建面域对象集合.
DBObjectCollection regions = Region.CreateFromCurves(ents);
// 在内存中创建拉伸路径对象.
Arc pathEnt = new Arc(new Point3d(500, 0, 0), new Vector3d(0, 1, 0), 300, 0, Math.PI);
// 实施拉伸，并将拉伸体添加到图形数据库.
ObjectId extrudeAlongPathId = ModelSpace.AddExtrudedSolid((Region)regions[0], pathEnt, 0);
}
