public void Create3dPoly()
{
Point3d[] pt = new Point3d[4];
pt[0] = new Point3d(0, 0, 0);
pt[1] = new Point3d(10, 0, 50);
pt[2] = new Point3d(30, 20, 60);
pt[3] = new Point3d(-30, 50, 70);
Point3dCollection pts = new Point3dCollection(pt);
ObjectId poly3dId = ModelSpace.Add3dPoly(pts);
}
