Arts numériques

import processing.video.*;
import ddf.minim.*;
import ddf.minim.ugens.*;
Capture cam;
Minim minim;
AudioOutput out;

zone_son[] lazone=new zone_son[20];

float seuil=1.5;
boolean p=false;

void setup() { 
  size(640, 480); 
  cam = new Capture(this);
  cam.start(); 
  minim = new Minim(this);
  out = minim.getLineOut();
  // les zones et notes associées
  lazone[0]=new zone_son(0, 200, 20, 20, "G2");
  lazone[1]=new zone_son(20, 200, 20, 20, "A2");
  lazone[2]=new zone_son(40, 200, 20, 20, "B2");
  lazone[3]=new zone_son(60, 200, 20, 20, "C3");
  lazone[4]=new zone_son(80, 200, 20, 20, "D3");
  lazone[5]=new zone_son(100, 200, 20, 20, "E3");
  lazone[6]=new zone_son(120, 200, 20, 20, "F3");
  lazone[7]=new zone_son(140, 200, 20, 20, "G3");
  lazone[8]=new zone_son(160, 200, 20, 20, "A3");
  lazone[9]=new zone_son(180, 200, 20, 20, "B3");
  lazone[10]=new zone_son(200, 200, 20, 20, "C4");
  lazone[11]=new zone_son(220, 200, 20, 20, "D4");
  lazone[12]=new zone_son(240, 200, 20, 20, "E4");
  lazone[13]=new zone_son(260, 200, 20, 20, "F4");
  lazone[14]=new zone_son(280, 200, 20, 20, "G4");
  lazone[15]=new zone_son(300, 200, 20, 20, "A4");
  lazone[16]=new zone_son(320, 200, 20, 20, "B4");
  lazone[17]=new zone_son(340, 200, 20, 20, "C5");
  lazone[18]=new zone_son(360, 200, 20, 20, "D5");
  lazone[19]=new zone_son(380, 200, 20, 20, "E5");
} 

void draw() { 
  if (cam.available()) { 
    // Reads the new frame
    cam.read();
    image(cam, 0, 0);
    for (int i=0; i< lazone.length;i++) {
      lazone[i].teste();
      lazone[i].dessine();
      lazone[i].joue();
    }
  }
  fill(255);
  text("Seuil : "+seuil,10,20);
} 

// modifier le seuil avec les touches haut et bas
void keyPressed(){
  if(key==CODED){
    if(keyCode==UP){
      seuil+=0.1;
    }
    if(keyCode==DOWN){
      seuil-=0.1;
    }
    seuil=constrain(seuil,0.1,3);
  }
}

class zone_son {
  int px, py, lx, ly;
  String note;
  boolean survol, joue;

  zone_son(int px, int py, int lx, int ly, String note) {
    this.px=px;
    this.py=py;
    this.lx=lx;
    this.ly=ly;
    this.note=note;
    survol=false;
    joue=false;
  }

  void dessine() {
    stroke(255, 0, 0);
    if (survol==true){
      fill(255, 0, 0);
    } 
    else {
      noFill();
    }
    rect(px,py,lx,ly);
  }
  
  void joue(){
    if (survol==true && joue==false){
    out.playNote( note );
    joue=true;
    } else if (survol==false && joue==true){
      joue=false;
    }
  }

  void teste() {
    int presenceSum = 0;
    for (int x=px; x < px+lx; x++) {
      for (int y=py;y < py+ly;y++) {
        color currColor = cam.pixels[(y*width)+x];
        // Extract the red, green, and blue components of the current pixel’s color
        int cR = (currColor >> 16) & 0xFF;
        int cG = (currColor >> 8) & 0xFF;
        int cB = currColor & 0xFF;
        presenceSum += cR + cG + cB;
      }
    }
    if (presenceSum/100000.0 > seuil) {
      survol=true;
    } 
    else {
      survol=false;
    }
  }
}