Using the NodeInCode namespace

[Will_Wang]

Thanks that’s it!

[Ambrosinus (Luciano Ambrosini)]

@piac

1. Finding a loaded Grasshopper component.

Hello Everyone, and as always thanks to Giulio for your work.

I have a very silly question (not so silly for me sorry)… if I call a grasshopper component in C# and for instance, I get one of the different results that the component provides (through your point 1) example), I have some difficulties in using the “result”.

I mean if I want to recall the ConvexHull component and I want to grab the result[2] ( it is a list of integers)…

dynamic GHConvexHull ( Point3d Pts, Plane Plane)
{
    at some point in the code...
    var index=results[2]; 
 }
    return (index)

in the Main Code at some point:

var idPt=ConvexHull (Pts, Pl);

Now if I want to know the idPt length in the main code and apply the “.Count” definition (idPt.Count), I get this error below:

1. ‘Grasshopper.DataTree’ does not contain a definition for ‘Count’ (line: 0)

So the “result” appears as Grasshopper.DataTree type, although I see this “result” as a list in the output variable.

This behaviour is extendible to all the object types that come by the Rhino NodeInCode function to recall the GH components inside a C# code (the C# GH component).

In Python, everything works like a charm (by importing ghpythonlib).

***I hope that some experts can share with me tips or solutions. ***
Thank you very much in advance!

[piac (Giulio Piacentino)]

@Ambrosinus

‘Grasshopper.DataTree’ does not contain a definition for ‘Count’ (line: 0)

It’s true, in fact DataTree(T) Class does not contain a definition of Count. You can get autocompletion by casting to the right type. I think this is going to be DataTree, if memory serves.

Thanks,

Giulio

–
Giulio Piacentino
for Robert McNeel & Associates
giulio@mcneel.com

[ngthanhlong82]

Hello Everyone.
I use NodeinCode name DivideCurve but i have a problems. I want to used result[0] as List but it didn’t work. So how i can fix it, please tell me. Thanks

[dale (Dale Fugier)]

Hi @ngthanhlong82,

Instead of this:

foreach (var obj in result[0])

Try this:

foreach (var obj in result)

– Dale

[ngthanhlong82]

Hi @dale . Thanks for helping me but i modifiled my code. The Result sitll problems.

[dale (Dale Fugier)]

Hi @ngthanhlong82,

Sorry - I am unable to read your screen capture.

I know NodeInCode is “cool”, but why not just call Curve.DivideByCount or Curve.DivideByLength, which is what GH does…

test_divide_curve.gh (8.0 KB)

– Dale

[ngthanhlong82]

Hi @dale . Thanks for answers me. I know 2 component as you told . But i want use this code to make something for me. I can use Method of Rhino" DivideByCount", but I curious about the NodeInCode. How to used it, so i try. Thanks.

[dale (Dale Fugier)]

@ngthanhlong82

How to used it

I’d start by searching Discourse for NodeInCode.

Also, here are a couple of simple samples you can review. These scripts call the QuickHull component found in RhinoPolyhedra.

test_quickhull1.py (874 Bytes)

test_quickhull2.py (1.2 KB)

– Dale

[ngthanhlong82]

Thanks @dale !

[18512187307 (Allen)]

The result type is IronPython.Runtime.List,how to Convert to C#LIst?

[ngthanhlong82]

Hi @dale . I had a problem when i used NodeInCode. When i used it in C# SCript, the result return type ( ex : surface). But when i used it in Visual studio ( component Grasshopper ), the result return : IronPython.Runtime.List. I don’t understand. How to convert to Rhino. Please help me. Thanks

[dale (Dale Fugier)]

Hi @ngthanhlong82,

A screen capture doesn’t really help anyone help you. If you still need assistance, then please post a .GH file.

– Dale

[ngthanhlong82]

Thanks @dale . I found result.

[s_oosterhof (Sander)]

A number of third party plugins such as OpenNest,GeomGym,ShapeDiver are not found in NondeInCode, while these do meet the requirements as far as I can see.

I also wrote a number of grasshopper components myself. Two components are visible and the other components cannot be used in NondeIncode. All components are in the same gh assembly. I therefore wondered why not all components are visible in NodeInCode, even though they have the correct name?

[castroecosta (Eduardo Costa)]

Hi everyone, and thanks @piac for this!
Apologies for ripping this thread open, but I haven’t found an update to this issue.

Is the quote below still true? I’m trying to use NodeInCode to run a component from a third-party plugin (namely Kiwi3D), and I need to programmatically change its “special settings” as Giulio calls it - I’m calling it “custom component options” as per Rhino - Custom Component Options). Currently I’m using ComponentFunctionInfo.Evaluate to feed inputs and collect outputs, but I’m puzzled on how to change those special settings.
Thanks in advance, Eduardo

@piac

The only catch is that, at present, there is no way to switch components that have special settings to any alternative. For example,

[asdbeen53 (Zebin Chen)]

I just wonder if anyone encounters this:

When I am using a NodeInCode function, sometimes it will suddenly return a NULL result. In this grasshopper canvas, I will not be able to use any NodeInCode function. It will always return Null until I restart my Rhino. Then it works again.

[Rh-3d-p (R-d)]

Use plug-in command Api in c#

hi everyone how ?use plug-in command Api in c# in python is practical work import rhinoscriptsyntax as rs import ghpythonlib.components as gh from Rhino.Geometry import * a=gh.Pufferfish.UnsplitExtrudeSurface(c,v) b=gh.Pufferfish.SplitKinkySurface(a)[0] in C#??? For example, I want to use the SplitKinkySurface command from the pufferfish plugin in C # how? @Michael_Pryor @Mahdiyar use plugin.gh (6.0 KB)

Use plug-in command Api in c#

dynamic ext(GeometryBase B, Vector3d D) {var com = rd.Components.FindComponent("Extrude"); object[] args = new object[]{B,D}; string[] warnings; if(com != null) { var results = com.Evaluate(args, true, out warnings); var Extr = results[0]; return Extr; } return null; // You have to output something when com is null. }

[Christopher_Prinz]

Hi @piac, everyone,

I’d like to utilize the “Contour” component using NodeInCode but I can’t access it because there are multiple components that share the same name. Is there a way around this?

nodeInCodeIssue.gh (11.1 KB)