float sp=0.2;
int timer=0;

float[] posxs= new float[36];
float[] posys= new float[36];
float[] tposxs= new float[36];
float[] tposys= new float[36];

int i=0;
int ranN=0;
int tranN=0;

int ranc01=0;
int ranc02=0;

color cset01=color(random(255),random(255),random(255));
color cset02=color(random(255),random(255),random(255));

float theta=PI/6;
float ttheta=0.0;

float ctheta01=PI/18;
float ctheta02=PI/9;
float ctheta03=PI/2;
float ctheta04=PI/3;

void setup()
{
 size(500,500); 
 smooth();
 frameRate(30);
 noStroke();
 for(i=0;i<36;i++)
 {
   posxs[i]=random(500);
   posys[i]=random(500);
   posxs[i]=tposxs[i];
   posys[i]=tposxs[i];
 }
}

void draw()
{
  //background(cset02);
  if(timer>60)
  {
    ranc01=int(random(255));
    ranc02=int(random(255));
    ranN=int(random(10));
    for(i=0;i<36;i++)
    {
      if(ranN==0)
      {
       tposxs[i]=250;
       tposys[i]=250;
      }
      else if(ranN==1)
      {
       tposxs[i]=250+200*cos(ctheta01*i);
       tposys[i]=250+200*sin(ctheta01*i);
      }
      else if(ranN==2)
      {
       tposxs[i]=250+200*cos(theta*i);
       tposys[i]=250+200*sin(theta*i);
      }
      else if(ranN==3)
      {
       tposxs[i]=15*i;
       tposys[i]=15*i;
      }
      else if(ranN==4)
      {
       tposxs[i]=15*(34-i);
       tposys[i]=15*i;
      }
      else if(ranN==5)
      {
       tposxs[i]=15*i;
       tposys[i]=250;
      }
      else if(ranN==6)
      {
       tposxs[i]=250;
       tposys[i]=15*i;
      }
      else if(ranN==7)
      {
       tposxs[i]=250+180*cos(ctheta02*i);
       tposys[i]=250+180*sin(ctheta02*i);
      }
      else if(ranN==8)
      {
       tposxs[i]=250+200*cos(ctheta03*i);
       tposys[i]=250+200*sin(ctheta03*i);
      }
      else if(ranN==9)
      {
       tposxs[i]=250+180*cos(ctheta04*i);
       tposys[i]=250+180*sin(ctheta04*i);
      }
    }
    timer=0;
    ttheta=0.0;
    cset02=cset01;
    cset01=color(random(255),random(255),random(255));
  }
  for(i=0;i<timer;i++)
  {
    fill(cset01,3*i);
    arc(250, 250, 10*(60-i), 10*(60-i), ttheta, ttheta+ theta);
    ttheta+=theta;
  }
  for(i=0;i<36;i++)
  {
    posxs[i]+=sp * ( tposxs[i] - posxs[i] );
    posys[i]+=sp * ( tposys[i] - posys[i] );
    fill(ranc01,100+3*i,ranc02,30+3*i);
    ellipse(posxs[i],posys[i],15,15);
  }
  timer++;
}

void mousePressed()
{
   for(i=0;i<36;i++)
    {
      tposxs[i]=mouseX;
      tposys[i]=mouseY;
    }
}