/////////////////////////////////////
//HOME PAGE, quentin aurat.com///////
//modified from : processing.js.com//
//2011, QUENTIN AURAT////////////////
/////////////////////////////////////

int nombre_de_cercles = 30;
int Size = 15;
float[][] e = new float[nombre_de_cercles][5];
float ds=2;
int sel = 0;
int expand = 10;
boolean dragging=false;

//----------------------------------------
void mouseDragged(){
  dragging=true;
}
//----------------------------------------
void mouseReleased(){
  dragging=false;
}


//////////////////////////////////////////

void setup(){
  //setFill = random(40,80);
  size(screenWidth+115 , screenHeight+115);
  frameRate(30);
  strokeWeight(0.2);
//----------------------------------------  
  for(int j=0;j< nombre_de_cercles;j++){
    e[j][0]=random(0,width); // X 
    e[j][1]=random(0,height);// Y
    e[j][2]= Size;           // Radius
    e[j][3]=random(-.5,.5);  // X Speed
    e[j][4]=random(-.5,.5);  // Y Speed
  }
}

//////////////////////////////////////////

void draw(){
  
  background(255);//242
  for (int j=0;j< nombre_de_cercles;j++){
    noStroke();
    
    float radi=e[j][2];
    float diam=radi/2;
//---------------------------------------- 
    if( dist(e[j][0],e[j][1],mouseX,mouseY) < radi*expand ){
      e[j][0]+=e[j][3]*expand;
      e[j][1]+=e[j][4]*expand;
      sel=1;

      if(dragging){
        fill(0);
        e[j][0]=mouseX;
        e[j][1]=mouseY;
      }
    } else {
      sel=0;
    }

    e[j][0]+=e[j][3];
    e[j][1]+=e[j][4];
    if( e[j][0] < -diam      ){ e[j][0] = width+diam;  } 
    if( e[j][0] > width+diam ){ e[j][0] = -diam;       }
    if( e[j][1] < 0-diam     ){ e[j][1] = height+diam; }
    if( e[j][1] > height+diam){ e[j][1] = -diam;       }
//----------------------------------------    
     if(sel==1){
     //fill(0,255,255,dist(e[j][0],e[j][1],mouseX,mouseY));
    fill(0,255,255);
      
     //fill(R,G,B);
     stroke(0,255,255);
    
    } 
    else { 

    fill(0);           
      stroke(255);
      
    }


    int roof;
    float winsize = (screenWidth*screenHeight);
    if (winsize > 400000){roof=90000}
    else if(winsize < 400000){roof=50000}
    //window.alert(roof);
    for(int k=0;k< nombre_de_cercles;k++){
      if( dist(e[j][0],e[j][1],e[k][0],e[k][1]) < radi*(winsize/roof)){

         triangle(e[j][0],e[j][1],e[k][0],e[k][1],e[j][0]-e[k][1],e[j][1]+e[j][1]);

       }
    }
    noStroke();      
  }
  
  noStroke();
  
}