How to trigger recompute of definition with a button in Rhino

[AndersDeleuran]

@3achs1

… is there a chance to trigger specific grasshopper components via a Rhino Button?

You could track their instance GUIDs and do something like this (i.e. you will want to expire components with specific instance GUIDs):

Recompute Button

I was just in need of this myself (for a one-click Recompute Solution from the RCP) and ended up here. I’m not sure if this GHPython approach (based on David’s advice above) would be considered super correct, but it does appear to do the trick: def ghSolutionRecompute(): """ Recomputes the Grasshopper solution (ala pressing F5) """ def expireAllComponentsButThis(e): for obj in ghenv.Component.OnPingDocument().Objects: if not obj.InstanceGuid == ghenv.Compon…

And if you’re running this from a Rhino button, you can replace ghenv.Component.OnPingDocument().Objects with Grasshopper.Instances.ActiveCanvas.Document.Objects.

Edit: You could also target components with specific names, substrings etc. if working with GUIDs aren’t appropriate.