Grasshopper C# VRay.GetState

[HOEN_ARKITEKTUR]

Is there a way to get the current state of a VRay Next rendering, from a C# component in Grasshopper? (IDLE, FINISHED etc.)
(The rendering is triggered in Rhino)

Using the .Net SDK I can do this, which will print "IDLE_DONE":

VRay.VRayRenderer renderer = new VRay.VRayRenderer();
renderer.StartSync();
renderer.WaitForRenderEnd();
Print(renderer.GetState().ToString());

Here obviously I set up a new VRay object and it renders an empty scene.
So another way to ask my first question:
Is there a way to reference the VRayRenderer object that was created when setting up the rendering in Rhino?

I hope the question makes sense...

All the best,
Joakim

[nikolay.bakalov]

Hi Joakim,

If understand correctly, the short answer is: yes.
There is a C export from the plugin binary that can be called from C#. Since they live in the same process, importing a method from the .rhp to C# will access the correct memory segment (since the .rhp is already loaded)



The C# code here is very simple:

  private void RunScript(object x, object y, ref object A)
  {
    RendererState state = (RendererState) ImportInterface.GetRendererState();
    Print(state.ToString());
  }

  // <Custom additional code>
  enum RendererState {
    FatalError = -1,
    IdleInitialized,
    IdleStopped,
    IdleError,
    IdleFrameDone,
    IdleDone,
    Preparing,
    Rendering,
    Paused,
    AwaitngChanges
  };

  public static class ImportInterface
  {
    [System.Runtime.InteropServices.DllImport("VRayForRhino.rhp")]
    public static extern int GetRendererState();
  }
  // </Custom additional code>

[HOEN_ARKITEKTUR]

Thank you so much! As long as I don't check too frequently and do a few extra checks if the value has changed this works as well as VRayRenderer.WaitForRenderEnd()