Hi @dale, any update on this issue?
I have hit same problem in my script. Trying to generate some .3dm file within an excel. Everything works fine (geometry, layers, object names, groups) but user strings do not.
I have tried created simple console app to replicate the problem. User string is not written in the .3dm file.
I have also tried to add user strings to File3dmObject directly, via ObjectAttribute class and also to the geometry itself. Everything with the same result.
using System;
using Rhino.DocObjects;
using Rhino.Geometry;
namespace File3dm
{
class Program
{
static void Main(string[] args)
{
try
{
Rhino.FileIO.File3dm file3Dm = new Rhino.FileIO.File3dm();
Rhino.FileIO.File3dmWriteOptions options = new Rhino.FileIO.File3dmWriteOptions();
options.Version = 2;
Plane basePlane = new Plane(new Point3d(0, 0, 0), Vector3d.ZAxis);
PlaneSurface waterLevelSurface = new PlaneSurface(basePlane, new Interval(-2, 2), new Interval(-2, 2));
ObjectAttributes attributes = new ObjectAttributes();
attributes.Name = "Water Level";
attributes.SetUserString("AAAA", "BBBB");
Guid objectGuid = file3Dm.Objects.AddSurface(waterLevelSurface, attributes);
file3Dm.Write("C:\\Users\\A408201\\Desktop\\WaterLevel.3dm", options);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
}
}
Do I missing something or it is Rhino3dm library issue?
Thanks for your time and reply
Ondřej