Meshes coming back empty about xbimgeometry

[jv112602]

Thomas,

This is what I have come up with:

        var productShape =
                context.ShapeInstancesOf((IIfcProduct) element)
                    .Where(s => s.RepresentationType != XbimGeometryRepresentationType.OpeningsAndAdditionsExcluded)
                    .ToList(); // this also returns shapes of voids

        if (!productShape.Any())
            return;
          XbimShapeTriangulation mesh = null;
      foreach (var shapeInstance in productShape)
        {
            var geometry = context.ShapeGeometry(shapeInstance.ShapeGeometryLabel);
            var ms = new MemoryStream(((IXbimShapeGeometryData) geometry).ShapeData);
            var br = new BinaryReader(ms);
            mesh =  br.ReadShapeTriangulation();
            mesh = mesh.Transform(((XbimShapeInstance) shapeInstance).Transformation);

..

then the mesh has easy access to mesh.Vertices and mesh.Faces

I haven't finished testing yet but getting good results when the ifc file processes

let me know how it goes.
jay

[jv112602]

any update on this issue ?

[CBenghi]

Hello,
sorry for the delay.
Can you clarify what you are trying to do?
also the file that you refer to does not seem to be attached to the thread.
Thanks,
Claudio

[jv112602]

Claudio,

Thanks for the reply. I didn't attach a file it happens to all my ifc files using the code fragments shown above.

I am trying to go though all the meshes and extract the vertices and faces to create a particular graphics representation. The code from 2.4.1 works fine but in cannot get the meshes in the latest to contain anything.

Any help you can provide is greatly appreciated.
thanks
jay

[CBenghi]

Could you show what is the graphic representation that you are seeking for a sample element? Just a screenshot of what you are doing with the working version 3.1 to see if there's a clean way would suffice. Best, c

…

On 3 Feb 2017, at 17:09, jay vose ***@***.***> wrote: Claudio, Thanks for the reply. I didn't attach a file it happens to all my ifc files using the code fragments shown above. I am trying to go though all the meshes and extract the vertices and faces to create a particular graphics representation. The code from 2.4.1 works fine but in cannot get the meshes in the latest to contain anything. Any help you can provide is greatly appreciated. thanks jay — You are receiving this because you commented. Reply to this email directly, view it on GitHub, or mute the thread.

[jv112602]

from the code above once I get the mesh as XbimMeshGeometry3D I just extract all the mesh.Positions and TriangleIndices to build another form I need of the mesh. The count of thee is now 0 in version later 2.4.1. If there is a better way to get the points and faces now I would love to get it. There is another question related to this posted by someone else.

thanks
again
jay

[jv112602]

Claudio,

Do you have a better way now to get the vertices and faces of the meshes ? I could sure use it.

thanks
jay

[ThomasTrinelle]

Hi Jay,
Have you figured it out? I'm trying to perform a similar operation and would love to know how you solved the issue.
Cheers,
Thomas

[ThomasTrinelle]

That's awesome Jay!
That's exactly what I was looking for. Wasn't aware of the "ReadShapeTriangulation" function, was stuck with some binary information.
Thx a bunch.
Thomas