// VIDEO: http://www.youtube.com/watch?v=pFLj7yJzp60

(
s = Server.local;
~threshTest = nil;
s.waitForBoot({
	
	SynthDef(\threshTest, {
		arg thresh=(-30);
		var sig, amp, trig;
		sig = SoundIn.ar(0);
		amp = Amplitude.kr(sig).ampdb;
		amp = K2A.ar(amp);
		trig = amp >= thresh;
		SendReply.ar(Impulse.ar(50), 'trigVal', [trig]);
	}).add;
	
	w = Window.new("amplitude threshold tester", Rect(600, 250, 950, 220)).front;
	w.view.background_(Color.gray(0.75));
	w.onClose_({s.freeAll});
	
	~numberBox = NumberBox.new(w, Rect(180, 25, 450, 120))
		.font_(Font("Helvetica", 108))
		.value_(-30)
		.action_({
			|nb|
			nb.value.postln;
			~knob.value_((nb.value.dbamp) / (~maxValSlider.value.dbamp));
			if(~threshTest.notNil,
				{
					if(~threshTest.group.class == Group,
						{~threshTest.set(\thresh, nb.value)},
						{}
						);
				},
				{}
			);
		});
		
		~knob = Knob.new(w, Rect(20, 20, 150, 150))
			.background_(Color.gray(0.75))
			.color_([Color.blue(0.9,0.5), Color.green(0.65), Color.gray(0.6), Color.black])
			.value_(~numberBox.value.dbamp)
			.action_({
				|knob|
				~numberBox.valueAction_((knob.value * ~maxValSlider.value.dbamp).ampdb);
			});
			
		~maxValSlider = EZSlider(
			w, Rect(20, 160, 612, 40), "knob max",
			ControlSpec.new(-90,0,\lin,0.1,0,""),
			{
				|slider|
				~numberBox.valueAction_((~knob.value * slider.value.dbamp).ampdb)
			},
			1, false, 120, 65, 0, 20, \horz, 2@2, 2@2
			)
				.setColors(knobColor:Color.blue(0.9,0.5))
				.font_(Font("Helvetica", 24));
		
		~testButton = Button.new(w, Rect(650, 25, 160, 40))
			.states_([
				["start test", Color.white, Color.green(0.65)],
				["stop test", Color.white, Color.red(0.65)]
			])
			.action_({
				|but|
				case
				{but.value == 0} {~threshTest.free}
				{but.value == 1} {~threshTest = Synth(\threshTest, [\thresh, ~numberBox.value])};
			})
			.font_(Font("Helvetica", 32));
			
		~received = TextView(w, Rect(750, 95, 170, 60))
			.visible_(false)
			.editable_(false)
			.string_("received")
			.font_(Font("Helvetica", 42))
			.stringColor_(Color.black)
			.background_(Color.gray(0.725));
		
		w.drawHook = {
			|v|
			Pen.fillColor = Color.gray(0.75);
			Pen.strokeColor = Color.black;
			Pen.width = 3;
			Pen.addArc(700@125, 35, 0, 2pi);
			Pen.fillStroke;
		};
		w.refresh;
		
		~oscr1.remove;
		
		~oscr1 = OSCresponder(nil, 'trigVal', {
			|time, resp, msg|
			if(
				msg[3] == 1,
				{
					Routine {
						w.drawHook = { |v|
							Pen.fillColor = Color.green;
							Pen.strokeColor = Color.black;
							Pen.width = 3;
							Pen.addArc(700@125, 35, 0, 2pi);
							Pen.fillStroke;
						};
						w.refresh;
						~received.visible_(true);
						0.1.wait;
						w.drawHook = { |v|
							Pen.fillColor = Color.gray(0.75);
							Pen.strokeColor = Color.black;
							Pen.width = 3;
							Pen.addArc(700@125, 35, 0, 2pi);
							Pen.fillStroke;
						};
						w.refresh;
						~received.visible_(false);
					}.play(AppClock);
				},
				{}
			);
		}).add;		
})
)