Dynamic nr of input parameters in UI

Replies to This Discussion

Permalink Reply by David Rutten on October 26, 2011 at 12:19pm

I'm adding a number of functions to the core that should make all this way easier. Turns out a lot of the parameter management stuff is pretty low-level and difficult to use (even for me, and I wrote the damn code!).

 

If you can wait a few more days, I can get you a better SDK.

 

--

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Joost Lauppe on October 30, 2011 at 6:26am

That would be very nice! I'm still very much interested in a proper solution.

Give me a sign when I can start playing around with these new functions.

 

Thanks!

Permalink Reply by Sridevi Koonath on October 27, 2011 at 3:51am

Hello,

 

Question: Why cannot we modify the number of parameters during a solution?

 

After disobeying that with the attached code(Test.cs), I am able to add input parameters from within the SolveInstance() method. Surprisingly enough, the component works fine(Untitled2.png), but after producing the error (Untitled1.png) 'n' number of times, where n is the number of dynamically added input parameters.

 

Any chance of getting rid of the error?

 

I am guessing that I should have gone about the task via EventHandlers, but I am still learning how it works and so have no clue how to access the data inside the initial input parameter using them.

 

Attachments:

• Test.cs, 3 KB
• Untitled1.png, 88 KB
• Untitled2.png, 23 KB

Permalink Reply by Sridevi Koonath on October 27, 2011 at 6:14am

EventHandlers, you are my bitch!!

Woohoo, fixed it! And this time, not inside SolveInstance(). Code attached!

 

 

Attachments:

• Test.cs, 4 KB

Permalink Reply by David Rutten on November 6, 2011 at 2:46pm

Getting pretty close to having a much better SDK and GUI (ZUI actually) for variable parameters.

 

http://www.youtube.com/watch?v=XgRWE4r2FH8

 

--

David Rutten

david@mcneel.com

Poprad, Slovakia

 

Permalink Reply by Joost Lauppe on November 25, 2011 at 2:36am

Hi David, any news on this development?

 

And I have another question, currently I'm developing a toolbox using a somewhat older version of Grasshopper (0.8.0010). I'm slightly hesitant to change to a newer version as it might skrew up my current configuration. One minor issue however is that I haven't been able to find a 'rhinoScriptInterface.RunSolver()' or any similar method, which I know exists in newer SDK's. Is there such a method for my version?

 

Regards.

 

Joost

Permalink Reply by David Rutten on November 25, 2011 at 4:22am

Yes. The GH_ParamServer class now has events that allow you to keep track of parameter changes. Basically it channels all events from all the parameters and provides a single bottleneck event for them all, which means you only have to register a single event handler instead of registering and unregistering for every input and output parameter in your component.

 

There are 3 events, two special ones and a generic one:

 

this.Params.ParameterNickNameChanged(Object sender, GH_ParamServerEventArgs e);

this.Params.ParameterSourcesChanged(Object sender, GH_ParamServerEventArgs e);

 

these two are called whenever a nickname or a source list is modified on any parameter associated with the component.

 

this.Params.ParameterChanged(Object sender, GH_ParamServerEventArgs e);

 

this one is called all the time, for any type of change (including the above two).

 

I'll add a topic to the SDK docs about how to use these events, but if you have a specific question, ask away.

 

--

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Ángel Linares on September 17, 2012 at 11:32am

That topic could be really useful :)

I'm having problems figuring out where to place the "AddHandler" statement (I've putted it inside component constructor) and how to code and where to place the handler Sub.

Regards.

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