2008.12.18.01:14-04:46 EDGE-The Piano Player

What if the edge is the score?
What if our shape is music?
What if the time we spend and the gesture we make is Music?




import mx.transitions.Tween;
import flash.display.BitmapData;
import flash.geom.*;
// panelEDGE : collect & display the edge from panelBMP's analysis
// panelBMP : show the BMP finally generated from the panelPIC
// panelPIC : generate the picture pattern
// butExec :
// butEdge : exec findEDGE()
stgW = 700;
stgH = 400;
edgeThickness = 0;
edgeColorUp = 0x0000FF;
edgeColorDown = 0x00FF00;
edgeAlpha = 100;
//
var BMPdata:BitmapData = new BitmapData(stgW, stgH, false, 0x000000);
panelBMP.attachBitmap(BMPdata,this.getNextHighestDepth());
//
//
function genScreen(iconMode, picTotal, choice) {

// 1 load pic to panelPIC
allPicContainer = panelPIC.createEmptyMovieClip("allPicContainer", 0);
allPicContainer._y = stgH;
t = picTotal-1;
attachID = "graphic_Icon"+choice;
allPicContainer.onEnterFrame = function() {
iconMC = allPicContainer.attachMovie(attachID, "mc"+t, t);
iconMC._x = (picTotal-t)*50;
iconMC.gotoAndStop(t+1);
t--;

if (t<0) {
delete this.onEnterFrame;
}
//
allPicContainer._width = stgW;
allPicContainer._yscale = allPicContainer._xscale;
// 2 map the visual to the panelBMP
if (iconMode == 0) {
BMPdata.fillRect(new Rectangle(0, 0, stgW, stgH),0x000000);
}
BMPdata.draw(panelPIC);
};
}
function findEdge() {
pianoUpArray = new Array();
pianoDownArray = new Array();
// compare top pixel profile line
for (i=0; i<stgW; i++) {
for (j=0; j<stgH; j++) {
var pixelValue = BMPdata.getPixel(i, j);
if (pixelValue != 0) {
pianoUpArray.push([i, j, pixelValue]);
break;
}
}
}
// compare down pixel profile line
for (i=0; i<stgW; i++) {
for (j=stgH-1; j>=0; j--) {
var pixelValue = BMPdata.getPixel(i, j);
if (pixelValue != 0) {
pianoDownArray.push([i, j, pixelValue]);
break;
}
}
}
// draw the edge
panelEDGE.clear();
//
panelEDGE.lineStyle(edgeThickness,edgeColorUp,edgeAlpha);
panelEDGE.moveTo(pianoUpArray[0][0],pianoUpArray[0][1]);
//
for (var e = 1; e<pianoUpArray.length; e++) {
panelEDGE.lineTo(pianoUpArray[e][0],pianoUpArray[e][1]);
}
//
//
panelEDGE.lineStyle(edgeThickness,edgeColorDown,edgeAlpha);
panelEDGE.moveTo(pianoUpArray[0][0],pianoUpArray[0][1]);
for (var e = 0; e<pianoDownArray.length; e++) {
panelEDGE.lineTo(pianoDownArray[e][0],pianoDownArray[e][1]);
}
//
var panelEDGE_twnAlpha:Tween = new Tween(panelEDGE, "_alpha", mx.transitions.easing.Strong.easeOut, 0, 100, 1, true);
var panelPIC_twnAlpha:Tween = new Tween(panelBMP, "_alpha", mx.transitions.easing.Strong.easeOut, 100, 50, 1, true);

}

function playPiano() {
interval = 25;
walk = 0;
soundFile = "piano_lines";
//
piano0.stop();
piano1.stop();
piano0 = new Sound();
piano1 = new Sound();
//
piano0.attachSound(soundFile);
piano1.attachSound(soundFile);
//
playHead.onEnterFrame = function() {
step = walk%stgW;
this._x = step;
//
if (this.hitTest(panelEDGE) && step%interval == 0) {
// UP
for (u=0; u<pianoUpArray.length; u++) {
var activeNoteX = pianoUpArray[u][0];
var activeNoteY = int(pianoUpArray[u][1]/stgH*80);
if (step == activeNoteX) {
piano0.setVolume(random(71)+30);
piano0.start(activeNoteY,1);
trace("activeNoteY0 : "+activeNoteY);

}
}
// DOWN
for (u=0; u<pianoDownArray.length; u++) {
var activeNoteX = pianoDownArray[u][0];
var activeNoteY = int(pianoDownArray[u][1]/stgH*80);
if (step == activeNoteX) {
piano1.setVolume(random(71)+30);
piano1.start(activeNoteY,1);

trace("activeNoteY1 : "+activeNoteY);

}
}
piano0.setVolume(piano0.getVolume()-1);
piano1.setVolume(piano1.getVolume()-1);
} else {
if (piano0.getVolume()>0) {
piano0.setVolume(piano0.getVolume()-2);
}
if (piano1.getVolume()>0) {
piano1.setVolume(piano1.getVolume()-2);
}
}
//
walk++;
};



}
function resetApp() {
allPicContainer.removeMovieClip();
//
BMPdata.fillRect(new Rectangle(0, 0, stgW, stgH),0x000000);
panelBMP._alpha = 100;
panelEDGE.clear();
//
delete playHead.onEnterFrame;
playHead._x = -10;
//
piano0.stop();
piano1.stop();
}


butExec.onPress = function() {
genScreen(random(2),random(26)+5,random(2));
};
butEdge.onPress = function() {
findEdge();
};
butSing.onPress = function() {
playPiano();
};
butReset.onPress = function() {
resetApp();
};