is there a "button" node in Grasshopper which only activate once every time when it's pressed?

I know there's a boolean toggle in Grasshopper, but it'll stay as on/off if you don't change it.

Suppose u forget to switch off the boolean toggle to control an intensive simulation, and u save the file, the next time the gh file is open it'll take quite a while to open.

So, a button will only activate the simulation once in this scenario.

Any advise?

Replies to This Discussion

Permalink Reply by Rafael Kowalski on June 12, 2015 at 4:01am

You can use the Data dam

Permalink Reply by William Carroll on June 17, 2015 at 1:34pm

How would a Data Dam help solve this problem? I am a little shaky on my understanding of the Data Dam component, but I am interested in hearing your explanation if you're willing to share. I have seen it working in other scenarios, but not in conjunction with a button.

Permalink Reply by Marios Tsiliakos on June 12, 2015 at 4:44am

Data dam won't resolve the opening problem.

There is a button component. Which turns true once pressed and the back to false.

However I believe you are already aware of this.

You can code your way out of an accidental run when you open a document by accessing all the boolean toggles in you GH document and setting their value to false.

Best,

Permalink Reply by William Carroll on June 17, 2015 at 1:35pm

Just to followup, a script that modifies the XML using a regex would be able to accomplish this rather simply.

Permalink Reply by FRiou on June 12, 2015 at 5:44am

Hello.I would use a trick like below. The simulation occurs every time you hit the button, and the result get stored for further simulation.

However, don't forget to delete the data before hitting the button again, otherwise you'll double your data !

I hope it helps !

Permalink Reply by Marios Tsiliakos on June 13, 2015 at 8:54am

Sorry for the delay.

Please have a look at the attached C# snippet. Is this what you're looking for? It's not a clean code but it does the trick.

Attachments:

150613_data_storing_csharp.gh, 10 KB

Permalink Reply by Nik Willmore on June 12, 2015 at 7:33pm

First disable the solver via Grasshopper menu. Then manually recompute after opening, also via Grasshopper menu. Despite the solver being off a single cycle will initiate each time you activate it like this.

Permalink Reply by Grasshope on June 17, 2015 at 8:28am

noted with thanks, guys, for the suggestions on the "button" component and the disable solver function of GH!

Permalink Reply by Kyle Faulkner on June 17, 2015 at 10:52am

This is what I use. I place it before chunks of script that take a long time to calculate. This prevents the chunk from running when the script is open because the recorded data is reset. Click the button to run and the "x" on the record node to clear.