Ref. this thread it seems that there's an issue with running the RunScript method with Rhino.Inside.

Multiple attempts are tried in the forum thread.

https://discourse.mcneel.com/t/rhinoapp-runscript-return-false-with-rhino-inside/168589

I am writing a utility to operate on rhino files so I can export the mesh data.
Is that supported on your api ? Not sure if you provide file level api you see ..

Next I want to write a plug-in to pull and push data via the rhino program itself. The idea is to update the mesh as the architect works. I assume that I need some sort of developer account to allow my colleagues to use that ?

I’m attempting to load and convert an OBJ file to 3DM format using the rhino3dm library. Here’s the relevant code snippet:

import rhino3dm from 'rhino3dm';
import * as fs from 'fs';
import * as THREE from 'three';
import { OBJLoader } from 'three/addons/loaders/OBJLoader.js';

const rhino = await rhino3dm();
console.log('Loaded rhino3dm.');

const fileContent = fs.readFileSync('public/models/test.obj').toString();

const loader = new OBJLoader();
const obj = loader.parse(fileContent);

let exportGeometry = null;
if (obj.children) {
    obj.children.forEach((mesh) => {
        if (!exportGeometry) {
            console.log('here');
            exportGeometry = mesh.geometry;
        } else {
            exportGeometry = THREE.BufferGeometryUtils.mergeBufferGeometries([exportGeometry, mesh.geometry], false);
        }
    });
}
const rhinoMesh = rhino.Mesh.createFromThreejsJSON({data: exportGeometry})

const doc = new rhino.File3dm()
doc.objects().add(rhinoMesh, null)

let opts = new rhino.File3dmWriteOptions()
opts.version = 6;
let buffer = doc.toByteArrayOptions(opts);
fs.writeFileSync('public/models/test.3dm', buffer);
console.log('3DM file saved successfully.');

The code successfully generates a 3DM file, but unfortunately, the resulting file is not valid. When re-uploaded to a 3D viewer, it fails to load properly. I’ve followed the example from the repository, but I’m encountering this issue.

Any insights on why the generated 3DM file isn’t valid, and how I can address this problem?

_rhinoCore = new Rhino.Runtime.InProcess.RhinoCore( Rhino.Runtime.InProcess.WindowStyle.Maximized);

The Rhino program opened using this code cannot use the Delete and Enter keys, but can be used by opening Rhino separately. But typing the command 'delete' can be used

I am a beginer of Rhino developer and have successfully complied the SampleExportMesh. I want to known how to add a command to call the function to export a mesh to a file?

Hi,

I originally came across this issue in our own CRhinoDisplayPipeline implementation however I encounter the same thing in the SampleViewportRenderer in this repo.

In short, it doesn't work. When you activate the renderer nothing ever gets displayed in the viewport. It just keeps displaying whatever was there previously and if you navigate the display remains unchanged.

I can fix this by providing a derived implementation of the EngineClass() virtual method. EG:

const ON_ClassId* CSampleDisplayPipeline::EngineClass()
{
	return &CRhinoDisplayEngine_OGL::m_CRhinoDisplayEngine_OGL_class_rtti;
}

On my machine I then get the viewport renders.

If I change the EngineClass() implementation to just return CRhinoDisplayPipeline::EngineClass() then things stop working again. In fact, the EngineClass() method gets called about 15 times. When it returns the OGL engine class it only gets called once.

Unfortunately, even though with these fixes it works on my desktop development machine it does not work on the laptop we tested. The ShowFrameBuffer method gets called however the viewport never gets updated. The only real difference we can think of between the two machines is that the laptop has an integrated and dedicated GPU (Rhino is running on the dedicated) while the development machine is just a dedicated GPU. So far we've only tested one desktop and one laptop but will be trying another laptop tomorrow. However, I can't think why there should be any issue given that ShowFrameBuffer is working at the MFC/WindowsSDK level.

Note that the Rhino 5 version of the plugins (both sample and our one) works fine in all cases. It's only for Rhino 6 that we've needed to override EngineClass() and are encountering the laptop issue.

Hi @fraguada,

I am not able to make work your sample project:

https://github.com/mcneel/rhino-developer-samples/blob/7/rhino.inside/dotnet/SampleRunGrasshopper/Program.cs

I have the nuget libraries and using .NET 4.8.

But when I run I got:
System.MissingMethodException: 'Method not found: 'Void Grasshopper.Plugin.GH_RhinoScriptInterface.RunHeadless()'.'
at

Could you or someone look into this please?

Thanks.

When I am using 3dmLoader, why do I have to set the librarypath? Can this step be omitted?

just，like-this：

loader = new Rhino3dmLoader();
// loader.setLibraryPath( 'https://cdn.jsdelivr.net/npm/[email protected]/' );
loader.load( 'http://127.0.0.1:5502/shoe/shoe.3dm', function ( object ) {
debugger
console.log(object);1
scene.add( object );
render()
}, (e) => {
		console.log(e)
}, (e) => {
		console.log(e)
})

not

// open 
loader.setLibraryPath( 'https://cdn.jsdelivr.net/npm/[email protected]/' );

help !

Hello,
I'm testing this FileObj.Write method with this options setting from this reference.
However, it seems it's not working.
the yz is not flipped and the material is not written.

Could you help me solving this issue?

I've gotten several requests for a C++ sample using Rhino.Inside

Hello ! I tried to run the hello world example in C# but I get an error at this line using (new RhinoCore(args)) :
System.DllNotFoundException : 'unable to load 'RhinoLibrary' DLL: The specified module cannot be found. (HRESULT exception : 0x8007007E)'

I re-referenced RhinoCommon and Rhino.Inside from the NuGet packages just to be sure. But I still get the issue...

Am I missing a setting step?

The script ResetBlock.rvb throws an 'undefined variable: arrXform' error.
This can be fixed by adding arrXform to the Dim declarations on line 17, since the script uses Option Explicit:
Dim arrBlocks, strBlock, arrPoint, arrVector, arrXform

line 27 in lines.py demo fails, when reading the branch, this solves it for me:
branch = output["values"][0]["InnerTree"]["{0;0}"]

I have cloned rhino developer samples inside visual studio 2019 (16.11.3) starting from the opening dialog to clone a project.
Then opened the Rhino.Inside SampleUnitTests & built it, without making any changes (even though the readme.txt suggests to make changes, all these were already done or set correctly).

When I use the Visual Studio built-in unit test running facilities, I first get an error that Grasshopper.dll is not found. I see that all the NuGet packages (rhino.inside, rhinowindows, grasshopper, rhinocommon) are installed in the %USER%.nuget\packages directory, but the dependent DLL's are not copied over to the directory where the unit test runner can find them. So, I copied over all dependent DLLs from nuget packages into the build output directory. Then I get a different error (see below), and I am stuck trying to solve this.

I was hoping to just clone, build and run the unit tests project without any hassle.

System.DllNotFoundException
Unable to load DLL 'RhinoLibrary': The specified module could not be found. (Exception from HRESULT: 0x8007007E)
   at Rhino.Runtime.InProcess.RhinoCore.InternalStartup(Int32 argc, String[] argv, StartupInfo& info, IntPtr hostWnd)
   at Rhino.Runtime.InProcess.RhinoCore..ctor(String[] args, WindowStyle windowStyle, IntPtr hostWnd)
   at Rhino.Test.GrasshopperSingleton.InitializeCore() in D:\zandbak\rhino-developer-samples\rhino.inside\dotnet\SampleUnitTests\GrasshopperTests\GrasshopperFixture.cs:line 148
   at Rhino.Test.GrasshopperSingleton..ctor() in D:\zandbak\rhino-developer-samples\rhino.inside\dotnet\SampleUnitTests\GrasshopperTests\GrasshopperFixture.cs:line 117
   at Rhino.Test.GrasshopperSingleton.get_Instance() in D:\zandbak\rhino-developer-samples\rhino.inside\dotnet\SampleUnitTests\GrasshopperTests\GrasshopperFixture.cs:line 90
   at Rhino.Test.GHFileFixture..ctor(String filePath) in D:\zandbak\rhino-developer-samples\rhino.inside\dotnet\SampleUnitTests\GrasshopperTests\GrasshopperFixture.cs:line 24
   at SampleGHTests.PrimitivesFixture..ctor() in D:\zandbak\rhino-developer-samples\rhino.inside\dotnet\SampleUnitTests\GrasshopperTests\TestPrimitives.cs:line 17

When I try to test the skin example I get this error:
LoadPlugIn cannot be called while a plug-in is being loaded
I'm using Rhinoceros 5 (64 bits)