// title: Additive Synthesis GUI Demo 4
// author: Bruno Ruviaro
// description:
// Multislider interface to control up to 16 inharmonic partials of a timbre. Two modes of play: "Continuous Tone" - it simply plays a continuous tone as you change the spectrum. "Percussive Tone" - you can play single percussive tones triggered with the 'perc' button, and control attack and decay values of these notes. Click and drag on the big white rectangle to draw the spectrum.
// code:
// ************************************
// Additive Synthesis Demo (GUI)
// Patch 4 - Inharmonic Partials with Multislider
// Bruno Ruviaro, 2013-07-24
// ************************************

/*

Multislider interface to control up to 16 inharmonic partials of a timbre.

Two modes of play:

"Continuous Tone" - it simply plays a continuous tone as you change the spectrum.
"Percussive Tone" - you can play single percussive tones triggered with the 'perc' button, and control attack and decay values of these notes.

How to start: select all (ctrl + A), then evaluate (ctrl + enter).
(on a Mac, use the command key instead of control)

Click and drag on the big white rectangle to draw the spectrum.

*/

s.waitForBoot({

	var spectrum, numharm, win, continuousOut, percussiveOut, multiSlider, volumeSlider, fundamentalSlider, modeButton, singleNoteButton, attackSlider, releaseSlider, subwin, singleNoteRoutine, att = 0.01, rel = 2, ampBus, sndBus, fundamentalBus, knobArray, partialArray;

	numharm = 16;

	partialArray = Array.newClear(16);

	fundamentalBus = Bus.control(s, 1);
	fundamentalBus.set(110);

	ampBus = Bus.control(s);
	ampBus.value = 0.1;

	sndBus = Bus.audio(s, 2);

	// Main window
	Window.closeAll;
	win = Window.new("Additive Synthesis", Rect(400, 30, 660, 670));
	win.view.decorator = FlowLayout(win.view.bounds, 20@20, 10@10);
	win.front;

	win.onClose = {s.freeAll; "Done!".postln; "".postln};
	CmdPeriod.doOnce({win.close});

	// Multislider
	multiSlider = MultiSliderView(win, Rect(0, 0, 620, 250));
	multiSlider.value = Array.fill(numharm, {0.0});
	multiSlider.isFilled = true;
	multiSlider.indexThumbSize = 29.0;
	multiSlider.gap = 9;
	multiSlider.action = {multiSlider.value.do({arg value, count;
		spectrum[count].set(\amp, value)})};

	// Knob.new(win, Rect(20, 0, 30, 30));
	knobArray = Array.fill(16, {Knob(win, 29@29)});

	knobArray.do({arg item, count;
		knobArray[count].centered = true;
		knobArray[count].value = rrand(0.4, 0.6).round(0.01); // de-centered positions (center=0.5)
		knobArray[count].action = {arg knob;
			// update array of partials
			partialArray[count] = knob.value.linlin(0, 1, -0.2, 0.2).round(0.01) + count + 1;
			// if this partial is currently playing, update its partial number (thus freq):
			if(spectrum[count].isNil.not,
				{spectrum[count].set(\partial, partialArray[count])})}});


	// Initialize array of partials with first knob values
	partialArray.do({arg item, count;
		partialArray[count] = knobArray[count].value.linlin(0, 1, -0.2, 0.2).round(0.01) + count + 1});
	// in the line above, "+ 0.5" adjusts for knob center = 0.5 (becomes center = 1);
	// this deviation value then is multiplied by the partial number

	fundamentalSlider = EZSlider(
		parent: win,
		bounds: 620 @ 40,
		label: "FREQ",
		controlSpec: ControlSpec(50, 200, \lin, 1, 110, "Hz"),
		action: {|ez| fundamentalBus.set(ez.value)},
		initVal: 110,
		unitWidth: 30)
	.setColors(
		stringColor: Color.black,
		sliderBackground: Color.grey(0.9),
		numNormalColor: Color.black);

	// Volume slider
	volumeSlider = EZSlider(
		parent: win,
		bounds: 620 @ 40,
		label: "VOLUME",
		controlSpec: ControlSpec(1, 100, \lin, 1, 10, "%"),
		action: {|ez| ampBus.set(ez.value/100)},
		initVal: 10,
		unitWidth: 30)
	.setColors(
		stringColor: Color.black,
		sliderBackground: Color.grey(0.9),
		numNormalColor: Color.black);

	// Mode button (toggle between continuous and percussive)
	modeButton = Button(win, 620 @110);
	modeButton.states = [
		["CONTINUOUS TONE (click here to switch to percussive mode)", Color.black, Color.new255(255, 255, 114)],
		["PERCUSSIVE TONE (click here to switch to continuous mode)", Color.black, Color.new255(255, 204, 194)]
	];
	modeButton.action = {arg state;
		if(state.value==0,
			{
				volumeSlider.valueAction = 10;
				continuousOut.set(\gate, 1);
				"CONTINUOUS MODE ON".postln;
				singleNoteButton.states = [["perc"]];
				subwin.background = Color.grey(0.6, 0);
			},
			{
				continuousOut.set(\gate, 0);
				"PERCUSSIVE MODE ON - click on perc button".postln;
				singleNoteButton.states = [["perc", Color.black, Color.new255(255, 204, 194)]];
				subwin.background = Color.grey(0.6, 1);
			}
	)};

	// CompositeView (sub window)
	subwin = CompositeView(win, 620@100);
	subwin.background = Color.grey(0.6, 0);

	// Button for triggering single percussive note
	singleNoteButton = Button(subwin, Rect(10, 10, 70, 80));
	singleNoteButton.states = [["perc"]];
	singleNoteButton.action = {
		if(modeButton.value==1, {
			percussiveOut = Synth("percussiveOut", [\inbus, sndBus, \att, att, \rel, rel, \amp, ampBus.asMap], addAction: \addToTail);
			"bang!".postln});
	};

	// Attack and Release controls for percussive notes
	attackSlider = EZSlider(
		parent: subwin,
		bounds: Rect(left: 80, top: 15, width: 530, height: 30),
		label: "Attack",
		controlSpec: ControlSpec(0.01, 4.0, \exp, 0.001, 0.1, "sec"),
		action: {|ez| att = ez.value},
		initVal: 0.01,
		unitWidth: 30)
	.setColors(
		stringColor: Color.black,
		sliderBackground: Color.grey(0.7),
		numNormalColor: Color.black);

	releaseSlider = EZSlider(
		parent: subwin,
		bounds: Rect(80, 55, 530, 30),
		label: "Release",
		controlSpec: ControlSpec(0.3, 10, \exp, 0.01, 2, "sec"),
		action: {|ez| rel = ez.value},
		initVal: 2,
		unitWidth: 30)
	.setColors(
		stringColor: Color.black,
		sliderBackground: Color.grey(0.7),
		numNormalColor: Color.black);

	// Routine to add SynthDefs, wait for Server reply, then start Synths
	{
		SynthDef("additive-multislider-2", {
			arg outbus, fundamental = 110, partial = 2.1, amp = 0.01;
			var snd = SinOsc.ar(fundamental * partial, 0, Lag.kr(amp, 3));
			Out.ar(outbus, snd!2);
		}).add;

		SynthDef("continuousOut", {
			arg inbus, amp = 0.1, gate = 1, att = 0.1, sus = 1, rel = 1;
			var env = EnvGen.kr(Env.asr(att, sus, rel), gate);
			Out.ar(0, In.ar(inbus, 2) * amp * env * 0.05);
		}).add;

		SynthDef("percussiveOut", {
			arg inbus, amp = 0.1, att = 0.01, rel = 2;
			var env = EnvGen.kr(Env.perc(att, rel), doneAction: 2);
			Out.ar(0, In.ar(inbus, 2) * amp * env * 0.05);
		}).add;

		// Wait for SynthDefs to be added...
		s.sync;

		// Now call the Synths:
		spectrum = Array.fill(numharm, {arg i; Synth("additive-multislider-2", [\fundamental, fundamentalBus.asMap, \partial, partialArray[i], \amp, 0.0, \outbus, sndBus])});

		continuousOut = Synth("continuousOut", [\inbus, sndBus, \amp, ampBus.asMap], addAction: \addToTail);

	}.fork;

	partialArray.postln;

	s.meter;
	"Additive Synthesis Demo 2".postln;
	"".postln;

}); // end of block.