Custom Preview not working from Rhino Plugin

Rhino Developer
, ,
1

We are trying to create a plugin that can send and receive data from rhino to gh and vice versa.

I have attached a sample program that takes a Boolean input and change the colour of the surface.

This works pretty well when we run it inside gh as C# component (refer snapshot) but its not working when we run the same in Rhino plugin. Can someone please advice on how to resolve it?

2021-11-22 (4)
2021-11-22 (4)1920×1162 148 KB

Many thanks

2

How are you sending data from the Rhino plug-in to Grasshopper? And how are you previewing that data from the Rhino plug-in?

3

We do something like this. Usually this works when the output is a panel but here its custom preview so we were unable to figure it out.

var ghDoc = new GH_DocumentIO();
ghDoc.Open(FilePath);
var  DocumentIO = ghDoc.Document;

List<IGH_ActiveObject> activeObjects = DocumentIO.ActiveObjects();
 foreach (IGH_ActiveObject battery in activeObjects)
      {
        if (battery is Grasshopper.Kernel.Special.GH_BooleanToggle)
        {
          Grasshopper.Kernel.Special.GH_BooleanToggle btn = battery as Grasshopper.Kernel.Special.GH_BooleanToggle;
          if (btn.NickName == "input")
          {
            btn.Value = true;
            btn.ExpireSolution(true);
          }
        }
      }

      foreach (var battery in activeObjects)
      {
        if(battery is Grasshopper.Kernel.Components.GH_CustomPreviewComponent)
        {
          var previewComponent = battery as Grasshopper.Kernel.Components.GH_CustomPreviewComponent;

          if (previewComponent.NickName == "output")
          {
            previewComponent.CollectData();
            previewComponent.ExpireSolution(true);
          }
        }
      }
4

@nathanletwory @Mahdiyar @maje90
any input would be very helpful

5

Not sure how that is supposed to work when doing that from a Rhino plug-in.

6

I’m not sure if I fully understand what you’re trying to do.

protected override Result RunCommand(RhinoDoc doc, RunMode mode)
{
    if (!(RhinoApp.GetPlugInObject(_ghId) is GH_RhinoScriptInterface gh)) return Result.Failure;
    gh.LoadEditor();
    var filePath = RhinoGet.GetFileName(GetFileNameMode.Open, "*.gh", "Select file", null);
    if (string.IsNullOrEmpty(filePath) || !System.IO.File.Exists(filePath)) return Result.Cancel;
    var ghDoc = Instances.DocumentServer.AddDocument(filePath, true);
    foreach (var obj in ghDoc.ActiveObjects())
    {
        if (obj is GH_BooleanToggle b && b.NickName == "input")
        {
            b.Value = true;
            b.ExpireSolution(true);
        }
        else if (obj is GH_ColourSwatch s && s.NickName == "color")
        {
            s.SwatchColour = Color.FromKnownColor(_colors[_rnd.Next(_colors.Length)]);
            s.ExpireSolution(true);
        }
    }
    return Result.Success;
}

Saket.gh (6.0 KB)
Saket.zip (102.4 KB)

2 Likes
7

@dale would you have any suggestion?

8

ot: how did you manage to get your interface changed like that? (statusbar and rounded corner checkboxes)

9

I’m using windows 11.

1 Like
10

@Mahdiyar It works! thanks for the help :slight_smile: