float x,y,x2,y2,xD,yD,n;
float xB,yB,xB2,yB2,xBD,yBD;
float xC,yC,xC2,yC2,xCD,yCD;
float dist,distB,distC,angle;
float distAB, distBC, distAC;
float test;

void setup(){
  size(400,400);
  ellipseMode(CENTER_DIAMETER);
  translate(width/2,height/2);  //?????
  x=random(-100,100);
  y=random(-100,100);
  x2=random(-100,100);
  y2=random(-100,100);
  xB=random(-100,100);
  yB=random(-100,100);
  xB2=random(-100,100);
  yB2=random(-100,100);
  xC=random(-100,100);
  yC=random(-100,100);
  xC2=random(-100,100);
  yC2=random(-100,100);
  n=3;
}

void loop(){
  background(150,140,140);

  noStroke();
 // BIG CIRCLE
  translate(width/2,height/2);
    fill(100,100,100);
  ellipse(2,2,295,295);
  fill(200,200,200);
  ellipse(0,0,290,290);
  fill(255,255,255);
  ellipse(0,0,275,275);
  
  
  // MOVE CODE
  xD=x2-x;
  yD=y2-y;
  dist=sqrt(xD*xD+yD*yD);
//  angle=degrees(atan2(yD,xD));
  xBD=xB2-xB;
  yBD=yB2-yB;
  distB=sqrt(xBD*xBD+yBD*yBD);
 
  xCD=xC2-xC;
  yCD=yC2-yC;
  distC=sqrt(xCD*xCD+yCD*yCD);
         
  x=x+xD/30;
  y=y+yD/30;
  
  xB=xB+xBD/30;
  yB=yB+yBD/30;
  
  xC=xC+xCD/30;
  yC=yC+yCD/30;
  
  x2=x2+random(-40,40);
  y2=y2+random(-40,40);
  xB2=xB2+random(-40,40);
  yB2=yB2+random(-40,40);
  xC2=xC2+random(-40,40);
  yC2=yC2+random(-40,40);
 // fill(0,255,0);
 // rect(-50,-50,100,100);
  // MAKE SURE INVISIBLE PRIMARY DOTS STAY IN CIRCLE
  test=sqrt(x2*x2+y2*y2);
  if (test > 170){
     if (x2 > 0) { x2 = x2 - 40; }
     if (x2 < 0) { x2 = x2 + 40; }
     if (y2 > 0) { y2 = y2 - 40; }
     if (y2 < 0) { y2 = y2 + 40; } 
  }
  test=sqrt(xB2*xB2+yB2*yB2);
  if (test > 170){
     if (xB2 > 0) { xB2 = xB2 - 40; }
     if (xB2 < 0) { xB2 = xB2 + 40; }
     if (yB2 > 0) { yB2 = yB2 - 40; }
     if (yB2 < 0) { yB2 = yB2 + 40; } 
  }
    test=sqrt(xC2*xC2+yC2*yC2);
  if (test > 170){
     if (xC2 > 0) { xC2 = xC2 - 40; }
     if (xC2 < 0) { xC2 = xC2 + 40; }
     if (yC2 > 0) { yC2 = yC2 - 40; }
     if (yC2 < 0) { yC2 = yC2 + 40; } 
  }  
 
   // KEEP DOTS FROM COLLIDING WITH EACH OTHER 
  
  distAB = sqrt((x-xB)*(x-xB)+(y-yB)*(y-yB));
  if (distAB < 10 ) { 
    if (x > xB) { x=x+n; xB = xB - n; } else { x=x-n; xB = xB + n; }
    if (y > yB) { y=y+n; yB = yB - n; } else { y=y-n; yB=yB+n; }
    }
   distBC = sqrt((xC-xB)*(xC-xB)+(yC-yB)*(yC-yB));
    if (distBC < 10 ) { 
    if (xC > xB) { xC=xC+n; xB = xB - n; } else { xC=xC-n; xB = xB + n; }
    if (yC > yB) { yC=yC+n; yB = yB - n; } else { yC=yC-n; yB=yB+n; }
          }
   distAC = sqrt((xC-x)*(xC-x)+(yC-y)*(yC-y));
   if (distAC < 10 ) {
       if (x > xC) { x=x+n; xC = xC - n; } else { x=x-n; xC = xC + n; }
    if (y > yC) { y=y+n; yC = yC - n; } else { y=y-n; yC=yC+n; }
   }
   
   
  // DRAW THE CIRCLES 
 // fill(255,0,0);
 // ellipse (x2,y2, 10, 10);
  fill(0,0,0);
  ellipse (x,y, 10, 10);
 // line(x,y, x2,y2);
  fill(0,0,0);
  ellipse (xB,yB, 10, 10);
 // fill(255,0,0);
 // ellipse (xB2,yB2, 10, 10);
  
      fill(0,0,0);
  ellipse (xC,yC, 10, 10);
  // fill(255,0,0);
 // ellipse (xC2,yC2, 10, 10);
 

}