class Rotar
{
int t,tt;
int winSize = 640;
int upto = 800;
int mid = winSize/2;
int rad = winSize/4;
int rad2 = winSize/4;
int[] xy = {mid,mid};
int[] nxy = xy;
int[] orgxy = {mid,mid};
int[] orgxy2 = {mid,mid};
float fxy[] = {1.0, 1.0};
float dfxy[] = {0, 0};
float fxy2[] = {1, 1};
float dfxy2[] = {0, 0};
float[] phxy={0, 0};
float[] dphxy = {0,0};
float fR = 4;
boolean bLine=false;

public Rotar(){
}

public void resetPhase(){
  phxy[0] = 0; phxy[1] = 0; 
}

public void setR1(float R){
  rad = int(R); 
}
public void setR2(float R){
  rad2 = int(R); 
}

public void setF1x(float f){
  fxy[0] = f; 
}
public void setF1y(float f){
  fxy[1] = f; 
}
public void setdF1x(float f){
  dfxy[0] = f; 
}
public void setdF1y(float f){
  dfxy[1] = f; 
}
public void setdPhf1x(float f){
  dphxy[0] = f; 
}
public void setdPhf1y(float f){
  dphxy[1] = f; 
}

public void setF2x(float f){
  fxy2[0] = f; 
}
public void setF2y(float f){
  fxy2[1] = f; 
}
public void setdF2x(float f){
  dfxy2[0] = f; 
}
public void setdF2y(float f){
  dfxy2[1] = f; 
}

public void setLine(boolean b){
  bLine = b;
}

 
void draw()
{
  background(0);
  //rad2++;
  fxy[0] += dfxy[0];
  fxy[1] += dfxy[1];
  fxy2[0] += dfxy2[0];
  fxy2[1] += dfxy2[1];
  phxy[0] += dphxy[0];
  phxy[1] += dphxy[1];
  //upto++;
  display(upto);
}
 
void display(int too) 
  {
    for (int t = 0; t< too; t++) 
    {
      orgxy2 = vec(orgxy ,xy, rad, t, fxy, phxy);
      nxy = vec(orgxy2 ,xy, rad2, t, fxy2, phxy);
      stroke (orgxy[0],nxy[0], nxy[1]);
      if (bLine)
        line(orgxy[0],orgxy[1],nxy[0],nxy[1] );
      else
        point(nxy[0],nxy[1]);
    }
  }
  
int[] vec(int[] dorgxy, int[] dxy, int drad, int t, float[] dfxy,float[] phxy)
  {
      dxy[0] = dorgxy[0] + int(drad*sin(t*dfxy[0] + phxy[0]));
      dxy[1] = dorgxy[1] + int(drad*cos(t*dfxy[1] + phxy[1]));
      return dxy;
  }
  
float varSine(float amp,int t,float f)
{
  f = amp + amp*sin(t*f);
  return f;
}
}