Algoritmo

import ddf.minim.*;

import processing.video.*;

Capture video;
Minim minim;
Minim minimA;
Minim minimV;
Minim minimR;
AudioPlayer effect;
AudioPlayer soundA;
AudioPlayer soundV;
AudioPlayer soundR;

boolean sound;
boolean sonA;
boolean sonR;
boolean sonV;
int counter;


void stop()
{
  effect.close();

  minim.stop();

  super.stop();
}



void setup() {
 size(640, 480); // Change size to 320 x 240 if too slow at 640 x 480
 // Uses the default video input, see the reference if this causes an error
 video = new Capture(this, width, height, 10);
 noStroke();
 smooth();
   minim = new Minim(this);
//  effect = minim.loadFile("sound.mp3");
 
  minimA = new Minim(this);
  soundA= minimA.loadFile("azul.mp3");
 
  minimR = new Minim(this);
  soundR= minimR.loadFile("rojo.mp3");
 
 
  minimR = new Minim(this);
  soundV= minimR.loadFile("verde.mp3");
 
  sound = true;
 
  sonA = true;
  sonV = true;
  sonR= true;
 
 
  counter = 0;
}

void draw() {
 
 
 if (video.available()) {
   video.read();
   image(video, 0, 0, width, height); // Draw the webcam video onto the screen
 
 
   int colorXr = 0; // X-coordinate of the closest in color video pixel
   int colorYr = 0; // Y-coordinate of the closest in color video pixel
 
   int colorXg = 0; // X-coordinate of the closest in color video pixel
   int colorYg = 0; // Y-coordinate of the closest in color video pixel

   int colorXb = 0; // X-coordinate of the closest in color video pixel
   int colorYb = 0; // Y-coordinate of the closest in color video pixel



 
   float cercRojo = 180; //we set this to be abritrarily large, once program runs, the first pixel it scans will be set to this value
 
   float cercAzul = 180;
 
   float cercVerde = 180;
 
 
 
   // Search for the closest in color pixel: For each row of pixels in the video image and
   // for each pixel in the yth row, compute each pixel's index in the video
   video.loadPixels();
   int index = 0;
 
 
   for (int y = 0; y < video.height; y++) {
     for (int x = 0; x < video.width; x++) {
     
     
       // Get the color stored in the pixel
       color pixelValue = video.pixels[index];
     
     
       // Determine the color of the pixel
       float colorProximity = abs(red(pixelValue)-0)+abs(green(pixelValue)-255)+abs(blue(pixelValue)-0);
     
       float colorProximity2 = abs(red(pixelValue)-255)+abs(green(pixelValue)-0)+abs(blue(pixelValue)-0);
     
       float colorProximity3 = abs(red(pixelValue)-0)+abs(green(pixelValue)-0)+abs(blue(pixelValue)-255);
     
     
     
       // If that value is closer in color value than any previous, then store the
       // color proximity of that pixel, as well as its (x,y) location
       if (colorProximity2 < cercRojo) {
  //       cercRojo = colorProximity2;
//        cercRojo=cercRojo-10; //thoguht behind this is that it once it "locks" on to an object of color, it wont let go unless something a good bit better (closer in color) comes along
         colorYr = y;// asignar posicion de circulo
         colorXr = x;// asignar posicion circulo
       }
     
       if (colorProximity3 < cercAzul) {
         //cercAzul = colorProximity3;
        // cercAzul=cercAzul-10; //thoguht behind this is that it once it "locks" on to an object of color, it wont let go unless something a good bit better (closer in color) comes along
         colorYb = y;// asignar posicion de circulo
         colorXb = x;// asignar posicion circulo
       }
     
     
       if (colorProximity < cercVerde) {
        // cercVerde = colorProximity;
         //cercVerde=cercVerde-10; //thoguht behind this is that it once it "locks" on to an object of color, it wont let go unless something a good bit better (closer in color) comes along
         colorYg = y;// asignar posicion de circulo
         colorXg = x;// asignar posicion circulo
       }
     
       index++;
     }//end for x
   }// end for y
 
 
   // Draw a large, yellow circle at the brightest pixel
 
   if(colorXr!=0 ){
     if(counter%20==0){
     
        soundR.play();
        sonR=true;
     }
       
   fill(255, 0, 0, 200);
   ellipse(colorXr, colorYr, 200, 200);
   }else{
     if(sonR){
      soundR.pause();
      sonR=false;


     }
   }
 
 
   if(colorXg!=0 ){
     if(counter%20==0){
     
        soundV.play();
        sonV=true;
     }
   fill(0,255,0,200);
   ellipse(colorXg,colorXg,100,100);
   }else{
     if(sonV){
      soundV.pause();
      sonV=false;


     }
   }
 
 
   
   if(colorXb!=0 ){
     if(counter%20==0){
     
        soundA.play();
        sonA=true;
     }
   fill(0,0,255,200);
   ellipse(colorXb,colorXb,100,100);
   }else{
     if(sonA){
      soundA.pause();
      sonA=false;


     }
   }
 
 
  if(counter==2000){
    counter=0;
  }