boolean bPlay = false;
float interations = 4;
int r = 1;
int a = 0;
int b = 0;
float i = 0;
float lx = 0, ly = 0, lx2 = 0, ly2 = 0;
float x = 0, y = 0, x2 = 0, y2 = 0;
float t;

void setup()
{ 
  size(400,400); 
  background(0);
  stroke(255,40);
  drawShape(a,b);
}

void draw()
{
  background(0);
  drawShape(a,b);
}

void mousePressed()
{
  background(0);
  stroke(255,40);
  lx = ly = lx2 = ly2 = 0;
  x = y = x2 = y2 = 0;
  //i = 0;
  //interations = 4;
  a = mouseX/7-(width/2);
  b = mouseY/7-(height/2);
}

void keyPressed()
{
  if(key=='+')
  {
    background(0);
    interations-=1;
    if(interations==0) interations=360;
  }
  if(key=='-')
  {
    background(0);
    interations+=1;
    if(interations==361) interations=1;
  }
}

void drawShape(int a, int b)
{
  translate(width/2,height/2);
  rotate(PI/2);
  for(int i = 0; i<360; i+=interations)
  {
  t = i*PI/180;
  lx = r*cos(a*t)*(width/3);
  ly = r*sin(b*t)*(height/3);
  x = r*cos(t)*(width/3);
  y = r*sin(t)*(height/3);
  bezier(lx,ly,x2,y2,x,y,lx2,ly2);
  bezier(-lx,-ly,x2,y2,-x,-y,lx2,ly2);
  //ellipse(lx,ly,3,3);
  //ellipse(lx2,ly2,3,3);
  lx2 = r*cos(a*t)*(width/3);
  ly2 = r*sin(b*t)*(height/3);
  x2 = r*cos(t)*(width/3);
  y2 = r*sin(t)*(height/3);
  }
  rotate(-PI/2);
  translate(-width/2,-height/2);
}