Creating A Virtual Launchpad with Webcam

Henaff

Hi there ! I'm trying to create a launchpad with my webcam. I've found few things about how to use my webcam to switch on/off a kind of "virtual button" to play an audio file. And my problem is... I have no idea about how to assign each "virtual button" to an .mp3 file.

I think the problem is between lines 105 and 140... I'm HELPLESS !!

import processing.video.*;
import ddf.minim.*;
import ddf.minim.ugens.*;
import ddf.minim.signals.*;
Capture cam;
Minim minim;
AudioPlayer player;


// Liste des samples //
AudioSample klaxon2;
AudioSample klaxon3;
AudioSample metro;
// Liste des samples //

AudioOutput out;
PImage img;

// Tracking vidéo //
import processing.video.*;
Capture video;
float txe = 0;
float tye = 0;
float alpha = 0.4;
int taille1 = 70 ;
int taille2 = 80 ;
int rouge = 10;


// Nombre de zones plus UNE !! //
zone_son[] lazone=new zone_son[3];
// Nombre de zones plus UNE !! //


float seuil=20;
boolean p=false;



void setup() { 

 size(displayWidth, displayHeight);
 cam = new Capture(this);
 cam.start(); 
 minim = new Minim(this);
 out = minim.getLineOut(Minim.STEREO);
 img = loadImage("Plan.jpg");



// Mes samples
klaxon2 = minim.loadSample("klaxon2.mp3");
klaxon3 = minim.loadSample("klaxon3.mp3");

lazone[0]=new zone_son(80, 0, 80, 80, "C3");
lazone[1]=new zone_son(1200, 0, 80, 80, "klaxon2.mp3");
lazone[2]=new zone_son(80, 600, 80, 80, "klaxon3.mp3");

} 

void draw() { 

 stroke(255);
 fill(255);
 text("Seuil : "+seuil,10,20);
 image(img, 0, 0);
 img.resize(width, height);


 if (cam.available()) { 
   // Reads the new frame
   cam.read();

   scale(-1,1); 
   translate(-width, 0);

   for (int i=0; i< lazone.length;i++) {
     lazone[i].teste();
     lazone[i].dessine();
     lazone[i].joue();
   }
 }

} 





// modifier le seuil avec les touches haut et bas //
void keyPressed(){
 if(key==CODED){
   if(keyCode==UP){
     seuil+=1;
   }
   if(keyCode==DOWN){
     seuil-=1;
   }
   seuil=constrain(seuil,10,40);
 }


}

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

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


 void joue(){
   if (survol==true && joue==false){

klaxon2.trigger();


   joue=true;

 } 

  else if (survol==false && joue==true){
     joue=false;
   }
 }



 void dessine() {

   stroke(255, 0, 50);

   if (survol==true){
     fill(255, 0, 50);
   } 
   else {
     fill(0, 0, 0);
   }

   ellipse(px,py,lx,ly);

 }


 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;
   }
 }
}





void stop()
{
out.close();
minim.stop();
player.close();
klaxon2.close();
klaxon3.close();
super.stop();
}

IF you have any idea, you are welcome, THX.