Macro / Quick Action question

[toxonic]

I'm new to tracktion and trying to get my head around macro programming.
I wonder, if there is a way to pitch a selection of audio clips by a linear increasing amount.
So, for example, i have 12 clips selected and i want a linear pitch progress from 1 - 12 semitones, so that the first selected clip will be pitched up by one semitone, the next one by 2 semitones, and so on...
I thought something like this could work...

Code: Select all

var clips = Tracktion.getSelectedEditElements ('clip');
var stepsize = 12 / clips.length;
for (var i = 0; i < clips.length; ++i)
{
    clips[i].changePitchSemitones(stepsize * i+1);  // <- not working!
}

... but I would need to use `Tracktion.changePitchSemitones(stepsize * i+1)` ... so how can I assign the pitch action to an element in the for loop?

[Peter Widdicombe]

I haven't done much with scripts, but what exactly is clips.length? Length of the array, or length of the clip? Is stepsize an integer? How many tracks are you testing on?