«Step Sequencer with Midi/Scales/Tuning capabilities» by rukano

on 16 Dec'11 03:52 in midistep sequencersequencer

Very old code I made in my first SuperCollider years. Changed some stuff to not use environment variables. Still works... but, yeah... spaghetti code ALL the way.

Demo video @ Youtube: http://www.youtube.com/watch?v=PnfAOlA1dJA

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(
// ................ init

var numRows = 7*2; // <-- change size here!!!
var numCols = 3*16; // <-- and here!!!

var window, decorator, matrix, buttonMatrix, leds;
var synthName, scale, octave, root, transp, sustain, amp;
var player, playButton, control, controlView, sendType;
var midiDevice, popMidiDevice, midiChannel;
var synthList = [\ping, \sine];


var screen = ();
var layout = ();
var pointSize = 20;

s = Server.default;
s.boot;

screen.width = Window.screenBounds.width;
screen.height = Window.screenBounds.height;


// layout stuff
layout.width = numCols * pointSize;
layout.height = numRows * pointSize;
layout.centerPoint = (
	( (screen.width/2) - (layout.width/2) ) @	
	( (screen.height/2) - (layout.height/2))
);
layout.button = ((layout.width/numCols)@(layout.height/numRows));
layout.center = Rect( 0, 200, layout.width, layout.height + (layout.button.y+10));

// window
window = Window("MATRIX", layout.center, resizable:false, border:true).front;
window.view.background_(Color.gray(0.5));
decorator = window.addFlowLayout(0@0, 0@0);

// make arrays
matrix = Array2D.new(numRows, numCols);
buttonMatrix = Array2D.new(numRows, numCols);

// makeLEDS

leds = numCols.collect{ |i|
		Button(window, Rect(0, 0, layout.button.x, layout.button.y))
			.states_([
				["", Color.black, Color.grey],
				["", Color.black, Color.green(0.7)]
			])
};

StaticText(window, layout.width@10); // separator...

// makebuttons
buttonMatrix.rowsDo{ |row, rowCount|
	row.do{ |item, i|
		matrix.put(rowCount, i, 0);	// init matrix with 0s
		buttonMatrix.put(rowCount, i, Button(window, Rect(0, 0, layout.button.x, layout.button.y))
			.states_([
				["", Color.black, Color.white],
				["", Color.white, Color.black]
			])
			.action_({ |v|
				matrix.put(rowCount, i, v.value);
			});
		)
	};
};

/************************* PLAYER **************************/

synthName = \ping;
scale = nil;
octave = 4;
root = 0;
transp = 0;
sustain = 0.2;
amp = 0.1;

player = Task({
	inf.do{ |counter|
		var col = counter % numCols;
		
		// main func
		matrix.colAt(col).do{ |item, pos|
			var ipos = (pos - (numRows-1)).abs;

			if(item != 0){ 
				if(sendType == 0){
					(
						instrument:	synthName,
						scale:		scale,
						amp:			amp,
						sustain:		sustain,
						octave:		octave,
						root:		root,
						ctranspose:	transp,
						degree:		ipos
					).play;
				};
				if(sendType == 1){
					(
						type:		\midi,
						midiout:		midiDevice,
						scale:		scale,
						amp:			amp,
						sustain:		sustain,
						octave:		octave,
						root:		root,
						ctranspose:	transp,
						degree:		ipos
					).play;
				};
				if(sendType == 2){
					(
						instrument:	synthName,
						scale:		scale,
						amp:			amp,
						sustain:		sustain,
						octave:		octave,
						root:		root,
						ctranspose:	transp,
						degree:		ipos
					).play;

					(
						type:		\midi,
						midiout:		midiDevice,
						scale:		scale,
						amp:			amp,
						sustain:		sustain,
						octave:		octave,
						root:		root,
						ctranspose:	transp,
						degree:		ipos
					).play;
					
				};
				
			};
		};

		// LED func
		
		if(col != 0){
			{
				leds[col].value_(1);	// turn on actual
				leds[col-1].value_(0);	// turn off last
			}.defer;
			
		}{
			{
				leds[col].value_(1);
				leds.last.value_(0);
			}.defer;
		};

		0.25.wait;		// quarter notes
	}
});


/********************* CONTROL WINDOW ***************************/

control = ();
control.width = 1024;
control.height = 200;

control.window = Window("CONTROLS", Rect(
	0,
	(screen.height - control.height - 22),
	control.width,
	control.height),
	resizable:false,
	border:true
).front;
// control.window.userCanClose_(false);

controlView = control.window.addFlowLayout(10@10, 10@0);

control.button = ();
control.button.width = 110;
control.button.height = 20;
control.button.dim = (control.button.width@control.button.height);

// LABELS
["SCALE", "TUNING", "SYNTH", "ROOT", "OCTAVE", "TRANSP"].do{ |label|
	StaticText(control.window, control.button.dim)
		.align_(\center)
		.string_(label);
};

StaticText(control.window, (control.button.dim.x*2.2)@(control.button.dim.y))
	.align_(\center)
	.string_("TEMPO");



// scale
control.chooseScale = PopUpMenu(control.window, control.button.dim)
	.items_(ScaleInfo.scales.keys.asArray.sort)
	.action_({|menu|
		scale = ScaleInfo.at(menu.item);
		postf("\t*** Using scale: ---> %\n", menu.item.asString);
	});
control.chooseScale.valueAction_(0);

// tuning
control.chooseTuning = PopUpMenu(control.window, control.button.dim)
	.items_(TuningInfo.tunings.keys.asArray.sort)
	.action_({|menu|
		scale.tuning_(menu.item);
		postf("\t*** Using tuning: ---> %\n", menu.item.asString);
	});
control.chooseScale.valueAction_(0);

// synth
control.chooseSynth = PopUpMenu(control.window, control.button.dim)
	.items_(synthList)
	.action_({|menu|
		synthName = menu.item;
		postf("\t*** Using synth: ---> %\n", menu.item.asString);
	});

// root
EZSlider(control.window, control.button.dim, controlSpec: [0,24, \linear, 1].asSpec, initVal: root, numberWidth:18, gap:0@0)
	.action_({ |v|
		root = v.value;
	});


// octave
EZSlider(control.window, control.button.dim, controlSpec: [1,8, \linear, 1].asSpec, initVal: octave, numberWidth:12, gap:0@0)
	.action_({ |v|
		octave = v.value;
	});

// transpose
EZSlider(control.window, control.button.dim, controlSpec: [-24,24, \linear, 1].asSpec, initVal: transp, numberWidth:22, gap:0@0)
	.action_({ |v|
		transp = v.value;
	});


// tempo
EZSlider(control.window,
	control.button.dim.x * 2.3 @ control.button.dim.y,
	controlSpec: [40, 240, \linear, 0.1].asSpec, initVal: 60, numberWidth:35, gap:0@0)
	.action_({ |v|
		TempoClock.default.tempo_( v.value / 60);
	})
	.valueAction_(60);

/**********************Separator************************/
StaticText(control.window, control.width@10);
/*******************************************************/

// random scale
Button(control.window, control.button.dim)
	.states_([["rand scale", Color.white, Color.magenta(0.5)]])
	.action_({
		control.chooseScale.valueAction_(
			control.chooseScale.items.indexOf(control.chooseScale.items.choose)
		);
	});

// random tuning
Button(control.window, control.button.dim)
	.states_([["rand tuning", Color.white, Color.magenta(0.5)]])
	.action_({
		control.chooseTuning.valueAction_(
			control.chooseTuning.items.indexOf(control.chooseTuning.items.choose)
		)
	});

// random synth
Button(control.window, control.button.dim)
	.states_([["rand synth", Color.white, Color.magenta(0.5)]])
	.action_({
		control.chooseSynth.valueAction_(
			control.chooseSynth.items.indexOf(control.chooseSynth.items.choose)
		)
	});

// randomize matrix
Button(control.window,  control.button.dim )
	.states_([["rand matrix", Color.white, Color.cyan(0.5)]])
	.action_({
		buttonMatrix.colsDo{ |col, pos|
			col.do{ |item, i|
				buttonMatrix.at(i, pos).valueAction_([1,0].wchoose([1,10].normalizeSum));
			}
		}
	});

// clear matrix
Button(control.window,  control.button.dim )
	.states_([["clear matrix", Color.white, Color.cyan(0.5)]])
	.action_({
		buttonMatrix.colsDo{ |col, pos|
			col.do{ |item, i|
				buttonMatrix.at(i, pos).valueAction_(0);
			}
		}
	});

EZSlider(control.window,
	control.button.dim.x * 3.4 @ control.button.dim.y,
	"legato (dur):   ",
	controlSpec: [0.001, 2, \linear, 0.01, 0.8].asSpec,
	initVal: 0.8, labelWidth: control.button.dim.x + 10, numberWidth:35, gap:0@0)
	.action_({ |v|
		sustain = v.value;
	})
	.valueAction_(0.8);

StaticText(control.window, control.width@10); // separator...

// play / pause
playButton = Button(control.window, (control.width / 2) - 10 @ control.button.dim.y)
	.states_([["PLAY", Color.black, Color.green], ["PAUSE", Color.black, Color.yellow]])
	.action_({ |v|
		if(v.value == 1){
			player.play;
		}{
			player.pause;
		}
	
	});

// stop
Button(control.window, (control.width / 2) - 20 @ control.button.dim.y)
	.states_([["STOP", Color.black, Color.red]])
	.action_({
		player.stop;
		player.reset;
		playButton.value_(0);
		leds.do{ |led| led.value_(0) };
	});

StaticText(control.window, control.width@20); // separator

// sendmidi
sendType = 0;

StaticText(control.window, control.button.dim).string_("Send to:").align_(\center);
PopUpMenu(control.window, control.button.dim)
	.items_(["SC Synth", "MIDI", "Both"])
	.action_({ |menu|
		sendType = menu.value;
		if(menu.value != 0){
			MIDIClient.init;
			popMidiDevice.items_(
				MIDIClient.destinations.collect{ |aDevice|
					aDevice.name.asString
				}
			);
			midiDevice = MIDIOut(0);
		}{
			popMidiDevice.items_(["sending to SC only"]);
		};
	});


// midi device
midiDevice = nil;

StaticText(control.window, control.button.dim).string_("MIDI Device:").align_(\center);
popMidiDevice = PopUpMenu(control.window, (control.button.dim.x/3)*5 @ control.button.dim.y)
	.items_(["sending to SC only"])
	.action_({ |menu|
		midiDevice = MIDIOut(menu.value);
		postf("\n\t*** Usind MIDI Device: % ---> %",
			MIDIClient.destinations[menu.value].device,
			MIDIClient.destinations[menu.value].name
		);
	});

// midi channel
midiChannel = 0;
StaticText(control.window, control.button.dim).string_("MIDI Channel:").align_(\center);
PopUpMenu(control.window, control.button.dim.x/3 @ control.button.dim.y)
	.items_((0..15).collect{ |item| item.asString })
	.action_({ |menu|
		midiChannel = menu.value;
	});

// midi velocity
StaticText(control.window, control.button.dim)
	.string_("Note Amplitude:").align_(\center);
EZSlider(
		control.window,
		control.button.dim.x * 1.25 @ control.button.dim.y,
		numberWidth:32,
		gap: 0@0
	)
	.action_({ |v|
		amp = v.value;
	})
	.valueAction_(0.2);

StaticText(control.window, control.width@20); // separator ...

Button(control.window, (control.width-20)@control.button.dim.y )
	.states_([["CLOSE ALL WINDOWS", Color.black, Color.grey]])
	.action_({ window.close; control.window.close; player.stop; });

// CmdPeriod.add({ window.close; control.window.close; });

// ......................... SYNTHS
SynthDef(synthList[0], { |out, freq=440, pan, amp=0.1, sustain=0.25|
	var snd = SinOsc.ar(freq);
	snd = snd * EnvGen.ar(Env.perc(0.01, sustain), doneAction:2);
	snd = Pan2.ar(snd, pan);
	OffsetOut.ar(out, snd*amp);
}).add;

SynthDef(synthList[1], { |out, freq=440, pan, amp=0.1, sustain=0.25|
	var snd = SinOsc.ar(freq);
	snd = snd * EnvGen.ar(Env.sine(sustain), doneAction:2);
	snd = Pan2.ar(snd, pan);
	OffsetOut.ar(out, snd*amp);
}).add;

)
descendants
«Re: Step Sequencer with Midi/Scales/Tuning capabilities» by meta keule (private)
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comments
tommaisey user 30 Apr'12 18:02

Wow, I'm just starting out and I had it in mind to build something like this as a first project - looks like I'll be picking your code apart first!

rukano user 30 Apr'12 20:56

It's not the best coded script, but I'm glad it can help you on your way :)

tommaisey user 01 May'12 10:18

Although I'm sure you could write it more elegantly now, the fact that it's laid out logically and in "longhand" is actually helpful for me because I'm not aware of all the shortcuts yet :)