int x,y,t,d,m=100, b, h,v,fa=1,fb=1,aa=16,ab=16,f2=2,r1=60, r2=20, r3=-15, f3=7, ppointerX, ppointerY;
color colour;
color colours[]=new color[257];
int sinArray[]=new int[721];

int xPos, yPos, oldxPos, oldyPos, c, i;
int tinc = TWO_PI/150;
int finc = TWO_PI/1000;
int drawStyle=1, mode=2;
void draw(){
  //if(t<-10.0 && t>-10.2) println ("fps: " t*10000/millis());
    t=0;
  background(0);
  i=0;
    oldxPos=m+fptoi((r1*sin(t)+r2*sin(t*f2/32)+r3*sin(t*f3)));
    oldyPos=m+fptoi((r1*cos(t)+r2*cos(t*f2/32)+r3*cos(t*f3)));
  while (t<PI*6){
    xPos=m+fptoi((r1*sin(t)+r2*sin(t*f2/32)+r3*sin(t*f3)));
    yPos=m+fptoi((r1*cos(t)+r2*cos(t*f2/32)+r3*cos(t*f3)));
    stroke (colours[i&255]);
    if (drawStyle==1) line(xPos, yPos, oldxPos, oldyPos);
    else point(xPos, yPos);
    oldxPos=xPos;
    oldyPos=yPos;
    t+=tinc;
    i++;
    }
  f2+=finc;
  
  if (keyPressed){
    if (key=='1') r2+=finc*2; 
    if (key=='2') f3+=finc/5;
    if (key=='3') r3+=finc*2;   
    if (key=='4') r2-=finc*2; 
    if (key=='5') f3-=finc/5;
    if (key=='6') r3-=finc*2;   
    if (keyCode==UP) f3+=finc;
    if (keyCode==RIGHT) r3+=finc;    
    if (keyCode==DOWN) f3-=finc;
    if (keyCode==LEFT) r3-=finc;    
  }
}

void dot (int xPos, int yPos) {
    point(xPos,yPos);
}

void setup() { 
  framerate(60); 
  m=width/2;
  x=0;
  i=0;
  /*while (i<720){
    sinArray[i]=sin(PI/360)*100;
    i++;
  }*/
  setColours(mode);
  draw();
} 

void setColours(int mode){

  if (mode==0){
    colorMode(HSB,255);
    i=0;
    while (i<256){
      colours[i]=color(i,0,255);
      i++;
    }   
  }
  if (mode==1){
    colorMode(HSB,255);
    i=0;
    while (i<256){
      colours[i]=color(i,128,255);
      i++;
    }   
  }
  if (mode==2){
    colorMode(HSB,255);
    i=0;
    while (i<256){
      colours[i]=color(i,255,255);
      i++;
    }   
  }    
}

/*int sine(int ang){
  while (ang<0) ang+=PI*2;
  return sinArray[(int)((ang*360/PI))%720];
} 

int cosine(int ang){
  while (ang<0) ang+=PI*2;
  return sinArray[(int)((ang*360/PI)+540)%720];
}*/

void keyPressed(){
    if (key=='0') drawStyle=1-drawStyle;
    if (key=='9') setColours((mode++)%3);   
    if (keyCode==FIRE) drawStyle=1-drawStyle;
}

void pointerDragged(){
        f3+=(pointerX-ppointerX)*finc;
        r3+=(pointerY-ppointerY)*finc;  
        ppointerX=pointerX;
        ppointerY=pointerY;              
}