How to bake out - Autodesk.Revit.DB.Line

ssw1 · February 17, 2021, 3:56pm

Hello,

if my script contains the element

Autodesk.Revit.DB.Line

How can I bake that out in grasshopper as an actual line?

Thanks

scottd · February 17, 2021, 10:40pm

I think this works. Use a Graphical Element selector to select the line. Then just Grab the elements Geometry.

Does that make sense?

ssw1 · February 18, 2021, 9:21am

Hi Scott, I tried this but please find attached snipping of error.

I would love to solve this with the nodes but would also like to know if I write a script in python, how I can convert the Autodesk.Revit.DB.Line into grasshopper geometry so i can start to manipulate the line with the script. I would have thought I would use a .convert or something to do this?

Thankyou very much. Sam

ssw1 · February 25, 2021, 9:16am

Hi @scottd

When I have my Autodesk.Revit.DB.Line, I am passing it into a Graphical Element Node.

I then get an error that says failed to convert Goo to Graphical Element?

But what is interesting is if I pass out say Autodesk.Revit.DB.Panel and pass it into a RiR geometry component it works and spits out breps. Could it be a units issue as I know that the line is converted from mm to revit units.

Thanks

kike · March 5, 2021, 9:12pm

Hi @ssw1,

You need to convert this line to a Rhino Curve before returning it.

To do so you can use the methods you will find at RhinoInside.Revit.Convert. GeometryDecoder class.

github.com

mcneel/rhino.inside-revit/blob/master/src/RhinoInside.Revit/Convert/Geometry/GeometryDecoder.cs

using System.Collections.Generic;
using System.Linq;
using Rhino.Geometry;
using DB = Autodesk.Revit.DB;

namespace RhinoInside.Revit.Convert.Geometry
{
  using Raw;
  using RhinoInside.Revit.External.DB.Extensions;

  /// <summary>
  /// Methods in this class do a full geometry conversion.
  /// <para>It converts geometry from Revit internal units to Active Rhino model units.</para>
  /// <para>For direct conversion methods see <see cref="Raw.RawDecoder"/> class.</para>
  /// </summary>
  public static class GeometryDecoder
  {
    #region Context
    public sealed class Context : State<Context>
    {

This file has been truncated. show original

In this case you are looking for ToCurve.