C++ API: How to connect Intensity to a Slider?

  • Hi guys, any idea on how to connect Intensity value to a slider on the C++ API?
    Connecting a parameter is already explained on VCSL example, but Intensity is not a parameter. Any help??

        StrippedSlider<SimpleReverbEffect::WetLevel> reverbSlider;
        StrippedSlider<GainEffect::Gain> mainGainSlider;
        StrippedSlider<GainEffect::Gain> releasesGainSlider;
        StrippedSlider<LfoModulator::IntensityChain> vibratoSlider; // <<-- Not working

  • @Christoph-Hart ?? pleeeeeeeease πŸ™‚

  • @hisefilo In the Modulation base class, it seems to be just intensity, but I honestly don't know if looked at the right place, have a try πŸ˜‰

  • @ustk thanks mate! Already tried. I think is something on ModulatorSyth::Gain but cannot figure out how to hook it

  • It's a little bit more complicated unfortunately. You need to create a template class that calls Modulator::setIntensity() and Modulator::getIntensity() and pass that to the UIConnection - actually it should be part of the raw namespace so I try to find some time tomorrow to add this.

  • @Christoph-Hart thanks Christoph. Will be super useful πŸ™‚

  • @Christoph-Hart any luck?

  • I was busy with the expansion stuff, but it's the next thing on my list.

  • Alright, it's there.

    Class Definition:

    juce::Slider mySlider; // must not be a HiSlider as this expects to be connected to a parameter
    raw::UIConnections::SliderBase intensityConnection;


      intensityConnection(&mySlider, mc, "SomeModulator")
        // ...
        // ...

    Data<float>::Intensity> can also be used in the storage process to save the intensity to a preset / value tree, but that's a nice little homework to figure out yourself πŸ™‚

  • @Christoph-Hart said in C++ API: How to connect Intensity to a Slider?:


    πŸ’ͺ πŸ’ͺ πŸ’ͺ πŸ’ͺ thanks πŸ™‚ !!!

    Just one error I guess:

    No type named 'SliderBase' in 'hise::raw::UIConnection'

  • Have you pulled the latest scriptnode?

  • @Christoph-Hart mmmm nope!!! I was using Master to work with the C++ API. Should I jump to Scriptnode?

  • @hisefilo said in C++ API: How to connect Intensity to a Slider?:

    @Christoph-Hart mmmm nope!!! I was using Master

    You've been in the stone age!

  • @d-healey I'm on lastest scriptnode for non-C++ API projects! πŸ™‚

  • @Christoph-Hart got it working!!! Thanks a lot @Christoph-Hart
    Now I'm working on replicating HiSlider stuff for the juce::Slider we are using. (MidiLearn, and LookAndFeel)

    Screen Shot 2021-03-13 at 10.07.31 AM.png

  • @Christoph-Hart it's possible to tweak HiSlider to receive Intensity? Will be much easier than adding Midilearn and flaf to Juce slider?

  • Yes thatβ€˜s a valid point.

  • Ah damn, I just noticed that it's super hard to MIDI learn the intensity - the entire system uses a parameter index and the intensity is not a parameter so the HiSlider is the smallest problem.

    One option would be to write a MIDI processor class that uses one slider and forwards this to the intensity that you need - it's super verbose for a simple task though...

    class IntensityForwarder: public HardcodedMidiProcessor
        IntensitySlider(MainController* mc, const String& modId):
          HardcodedMidiProcessor(mc, "IntensityForwarder")
            modToUse = dynamic_cast<Modulator*>(ProcessorHelpers::getFirstProcessorWithId(mc->getMainSynthChain(), modId));
            jassert(modToUse != nullptr);
            // Add one slider that will forward the value to the intensity.
            Content.addSlider("modIntensity", 0, 0);
        // add all callbacks
        void onControl(var c, var value)
        WeakReference<Modulator> modToUse;
    // creation:
    raw::Builder b;
    b.create<IntensityForwarder>(mc->getMainSynthChain(), whateverParameters);
    raw::UIConnection::Slider<0> c; // connect it to the IntensityForwarder

    This is pseudo code and will definitely not work, but it should get you started.

  • @Christoph-Hart Thanks !!!!!!! Working on it. Will post results!

  • @Christoph-Hart
    cannot get it working. Compiles, runs but onController never gets executed.

    This is what I did:
    Changed HardcodedMidiProcessor to HardcodedScriptProcessor because does not exist.
    Changed Modulator for LfoModulator since Modulator does not have setIntensity

    class IntensityForwarder: public hise::HardcodedScriptProcessor
        /** Set the name and default ID of the processor. */
        SET_PROCESSOR_NAME("IntensityForwarder", "IntensityForwarder", "IntensityForwarder");
        IntensityForwarder(MainController* mc, const String& id, const String& modId):
        HardcodedScriptProcessor(mc, id, mc->getMainSynthChain())
            modToUse = dynamic_cast<LfoModulator*>(ProcessorHelpers::getFirstProcessorWithName(mc->getMainSynthChain(), modId));
            jassert(modToUse != nullptr);
            // Add one slider that will forward the value to the intensity.
            Content.addKnob("modIntensity", 100, 100);
        // add all callbacks
        void onControl(var c, var value) 
            std::cout << "on Control" << std::endl;
        WeakReference<LfoModulator> modToUse;

    then I had to build it using add, instead of create

    builder.add<IntensityForwarder>(new IntensityForwarder(mc, "IntensityForwarder1", "LfoGain"), mc->getMainSynthChain(), raw::IDs::Chains::Midi);

    and lately conected it using this:

    template <int ParameterIndex>
    class StrippedSlider : public hise::HiSlider,
    	public ControlledObject
    	StrippedSlider(MainController* mc, const String& name) :
    		raw::Pool pool(mc, true);
    //        flaf.setFilmstripImage(pool.loadImage("Strip.png"), 100);
            flaf.setFilmstripImage(pool.loadImage("StripBigNew.png"), 64);
    		setTextBoxStyle(Slider::NoTextBox, false, 0, 0);
    		connection = nullptr;
    	void connect(const String& id)
    		auto p = ProcessorHelpers::getFirstProcessorWithName(getMainController()->getMainSynthChain(), id);
    		setup(p, ParameterIndex, Slider::getName());
    		connection = new raw::UIConnection::Slider<ParameterIndex>(this, getMainController(), id);
    	bool tempoSyncMode = false;
    	FilmstripLookAndFeel flaf;
    	ScopedPointer<raw::UIConnection::Slider<ParameterIndex>> connection;

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