RhinoScript Flow Control

We have some GH code that we're calling using Rhinoscript. As part of this Rhinoscript we're also making a call to a C# interface.

When the Rhinoscript starts up it should check to see if a directory exists, if it doesn't then the C# should be called and the Rhinoscript should wait until the C# code has executed successfully to continue running.

How should I go about getting the Rhinoscript to "pause" and wait for the C# to run?

Thanks!

Matthew

Replies to This Discussion

Permalink Reply by David Rutten on July 28, 2014 at 9:03am

Your C# code should not return control to the callee (RhinoScript in this case) until it's done with its job. Then RhinoScript doesn't have to jump through hoops.

David Rutten

david@mcneel.com

Permalink Reply by Matthew K Getch on July 28, 2014 at 9:16am

So then how do I lock the flow from the C# bit of the plug-in. As it stands it gets called then the RhinoScript just goes about its business like a train off rails.

Permalink Reply by David Rutten on July 28, 2014 at 10:02am

How are you invoking the C# part?

David Rutten

david@mcneel.com

Permalink Reply by Matthew K Getch on July 28, 2014 at 10:49am

Rhino.Command

Is there a better way?

-Matthew

Permalink Reply by David Rutten on July 28, 2014 at 11:29am

That should still not return until the C# plugin yields control back to the callee.

I think perhaps your C# plugin command class starts doing something on another thread and immediately returns control on the main thread. However without seeing that code I can't be sure.

David Rutten

david@mcneel.com

ps. judging from the flatness of this discussion you're having trouble using straight forward reply as well?

Permalink Reply by Matthew K Getch on July 28, 2014 at 3:57pm

The issue is that we created a GUI that feeds some content to Grasshopper. Our GUI starts up but once it up the control sequence doesn't halt so our GH just runs independent of the C# results.

Permalink Reply by David Rutten on July 28, 2014 at 5:15pm

Then you need to make sure that your command doesn't return befire your window is finished. Yiu can euther show the window as a modal form, or you can run a blank getter in the rhino command line which prevents the command from finishing until you want it to.

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