Фигура Лиссажу

float wx = random(10); // horizontal angular frequency
float wy = random(10); // vertical angular frequency

float xpos, ypos; // plotted point
float px, py; // previous points
float a = 1;
float b = 1; // constants
int frame = 0;

float dx = PI/2; // horizontal angular phase
float ax = 1; // horizontal amplitude
float dy = 0; // vertical angular phase
float ay = 1; // vertical amplitude

void setup() {
  size(400, 400);
  fill(64, 64, 64, 64);
  background(255);
  smooth();
}

void draw() {
  fill(255, 1);
  rect(0, 0, width, height);

  xpos = ((width/3) * a * sin(frame))+(width/2);
  ypos = ((height/3)* b * cos(frame))+ (height/2);

  xpos = width/3 * ax*sin(wx*radians(frame)+dx) + width/2;
  ypos = height/3 * ay*sin(wy*radians(frame)+dy) + height/2;

  fill(64);
  stroke(3);
  if (frame>0) { 
    line(px, py, xpos, ypos);
  }

  px = xpos;
  py = ypos;  
  frame++;
}

//void keyPressed() {
//  saveFrame("lissajous_curve_x"+wx+"_y"+wy+".png");
//  exit(); // stops the program
//}

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