Monitor changes inside Scriptfx - the correct method? (broadcasters listeners)

[griffinboy]

@ustk

Christoph wrote an example for exactly that somewhere... I wonder where it was I'm not sure, search for global cable posts!

That template above has a version of it. Use GPT to untangle my comments itll understand mostly what I was writing there

[ustk]

@griffinboy I tried many keywords already with no luck...

[ustk]

@griffinboy Cool I got it to compile with the callback!
Now it's a matter of properly reading the JSON I am sending... -> Working

UI code:

const var RoutingManager = Engine.getGlobalRoutingManager();
const var DataCable = RoutingManager.getCable("dataCable");

const var data = {level: 0.0};


inline function onKnob1Control(component, value)
{
	data.level = value;
	
	DataCable.sendData(data);
};

C++

    global_cable_data()
    {
        // Register a data callback for the global cable
        this->registerDataCallback<GlobalCables::dataCable>([this](const var& data)
        {
            if (auto* obj = data.getDynamicObject())
            {
                const var& levelVar = obj->getProperty("level");

                //if (levelVar.isDouble() || levelVar.isInt())
                //{
                    gain = static_cast<float>(static_cast<double>(levelVar));
                //}
            }
        });
    }

This doesn't seem to update gain

EDIT: my bad... wasn't listening on the right set of speakers lol WORKING LKE A CHARM!!!
Thanks a lot @griffinboy !

[griffinboy]

@ustk

Nice thanks for posting the working answer

[Christoph Hart]

@ustk said in Monitor changes inside Scriptfx - the correct method? (broadcasters listeners):

@griffinboy I tried many keywords already with no luck...

In the docs:

HISE | ScriptNode | global_cable

Send a double precision float value anywhere to HISE

(docs.hise.dev)

What is the way to send the value to the node from the UI?
Is there a callback that should be defined?

For UI -> Node communication, just use the stock parameter system. Only for Node -> UI communication (eg. reporting back analysis values from your C++ class) you need to use the global cables - and then you can choose between a realtimesafe single value or any arbitrary data that will be allocated and copied around over the DLL boundaries (which is not realtime safe).

[ustk]

@Christoph-Hart hmmm... have to look at this ! I made it to work UI -> global cable -> node, but I'll try with standard parameter to send an array of JSON

[griffinboy]

@ustk

GCs are the only way to send an array into a node, unless you encode it as audio or other.

[ustk]

@griffinboy oh that's what I was thinking, @Christoph-Hart's shortcut needed a sequel

[Christoph Hart]

@ustk ah ok, I was just underwhelmed by the data you send over the cable in your example (a single gain number lol) but I have no idea what you're doing in the real world.

If you need to send more to your node, then yeah the global cable might be the best option.

[ustk]

@Christoph-Hart said in Monitor changes inside Scriptfx - the correct method? (broadcasters listeners):

@ustk ah ok, I was just underwhelmed by the data you send over the cable in your example (a single gain number lol)

Yeah you make me feel padawan like, which I probably am lol.

but I have no idea what you're doing in the real world.

I'm wondering the same thing every single day, until I'm uploaded to the cloud...

More seriously, I draw a spline in the interface, and send the control points to the node in order to reconstruct the wave shaper in a buffer...
Sounds the right approach or did I spend a week luring myself?

[Christoph Hart]

@ustk the table UI component is exactly that - a path with (quadratic) curves that are rendered to a float buffer and can be send to a C++ class over the ExternalData API. If for some reason the Table doesn't fit your requirements then yes your approach would be the next best thing.

[ustk]

@Christoph-Hart I am making a cubic B-spline so a quadratic is somewhat underwhelming lol

But that would be so much easier