Display an image on the Macro page when a zone receives a MIDI note-on message

Virtual instruments HALion
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1

Hi

I’m looking for a method to display an image on the Macro page ONLY when a certain zone (or layer) receives a MIDI note-on message. In other words I want an image on the Macro page that is normally not visible but it becomes visible (for a very short time, like 100ms) when a zone (let’s say a sample that is mapped on C3) receives a midi note. So when I play a C3 that image should become visible for a split second.

Any suggestions?

2

In case I didn’t make myself clear enough: what I’m looking for is to have an image element (or a stack with two images) on the Macro Page and that image to behave very similar to Halion’s MIDI activity LED. That LED turns on when Halion receives a MIDI message (note-on, note-off and CCs). In my case I need the image to “turn on” (be visible) only when a certain Layer receives a note-on message.

led

3

You could try a short script like this:

defineParameter("led", nil, false)

function onNote(e)
    postEvent(e)
    led = true
    wait(100)
    led = false
end

You could add this as lua script in the layer you want to monitor this way. Connect the created script parameter to stack or animation.

But I haven’t tested this.

1 Like
4

Yesssss! It works perfectly! :partying_face: :partying_face:
Thank you so much! :hugs:

5

One more thing: is it possible somehow to make that “led” turn on only for certain notes, not the entire range? Let me explain a little better: at the moment, using your script, the led parameter gets the true value every time that layer receives a note-on message no matter which key is pressed. I would like to be able to limit this only to certain notes (not to a range of notes). So for example only when I press a C3, an F#3 or a D#4 the led should turn on (true value) and for any other note it should remain turned off (false value).

6

Yes, this should be possible. Just add an “if” statement in the onNote callback. Is it just those 3 notes?

defineParameter("led", nil, false) 

function onNote(e) 
    postEvent(e)
    if e.note == 60 or e.note == 66 or e.note == 75 then
         led = true
         wait(100)
         led = false
    end
end

If it’s more notes then it could be better to create a table and compare with that.

defineParameter("led", nil, false)

local notes = {[60] = true, [66] = true, [75] = true}

function onNote(e)
    postEvent(e)
    if notes[e.note] then
        led = true
        wait(100)
        led = false
    end
end
1 Like
7

Perfect! It works like a charm! :partying_face:
And it’s so easy. I was afraid I’d need a rather convoluted script to accomplish this.
Thank you so much! :hugs: :hugs:

Yes, just those 3 notes for now.