使用 Forge 在 Revit 中导入 IFC（自动生成 ifc.rvt）

Question

I am trying to automate the import of IFC file in Revit in order to automaticcally generate ifc.rvt files using Forge:

AppBundle & Activity which I want to use

private void ChangeIfcToRev(DesignAutomationData data)
{
    Application rvtApp = data.RevitApp;
    string modelPath = data.FilePath;
    Document doc = rvtApp.OpenIFCDocument(modelPath);
    ModelPath path = ModelPathUtils.ConvertUserVisiblePathToModelPath("result.rvt");
    doc.SaveAs(path, new SaveAsOptions());
}

Right now everytime I start my Plugin I get this error:

Autodesk.Revit.Exceptions.InvalidOperationException: The document can not be opened.
  at Autodesk.Revit.ApplicationServices.Application.OpenDocumentFile(ModelPath modelPath, 
  OpenOptions openOptions)
  at DesignAutomationFramework.DesignAutomationData..ctor(Application revitApp, String 
  mainModelPath)
  at DesignAutomationFramework.DesignAutomationReadyEventArgs..ctor(Application revitApp, String 
  mainModelPath)
  at DesignAutomationFramework.DesignAutomationBridge.SetDesignAutomationReady(Application 
  revitApp, String mainModelPath)
  at RevitCoreEngineTest.RceConsoleApplication.Program.UserMain(CommandLineArgs cl)

Thats really weird because I dont use the OpenDocumentFile function in my code. Im using the OpenIFCDocument function. Since I didn't get any further, I tried to only resave the ifc file. Same error.

Then I tried to use the samplePlugin from the Forge Tutorial: https://learnforge.autodesk.io/#/designautomation/appbundle/

The samplePlugin works fine with.rvt files but not with.ifc files. Also there I get an error.

What do I wrong? Thanks for your help!

Answer 1

Possibly, Forge DA for Revit insists on starting up Revit with an RVT input file argument provided. To work with this requirement, you might be able to provide a minimal dummy RVT file as an input argument and simply ignore it, continuing to open your IFC file as a second open document and saving that as RVT just like you are already doing now.

Looking more closely and the instructions to Publish an Activity , I see that the input file is specified in the command line:

  "commandLine": [ "$(engine.path)\\\\revitcoreconsole.exe /i \"$(args[rvtFile].path)\" /al \"$(appbundles[DeleteWallsApp].path)\"" ],

What input file are you specifying there?

Can you simply omit it?

Answer 2

I heard back from the development team, and the solution is simpler still.

Just omit the input argument in your commandLine specification:

 "commandLine": [ "$(engine.path)\\\\revitcoreconsole.exe /al \"$(appbundles[mybundles].path)\"" ]

This is not new, and most customers probably know it. Still, I agree we can update the Forge docs to explicitly state this usage.