Parametric Equation in Processing emulating 90's screensaver vibes.

screensaver-animation.pde

// For exporting the video
import com.hamoid.*;

static final int NUM_LINES = 20;

float t;
VideoExport videoExport;

void setup() {
  size(500, 500);
  pixelDensity(displayDensity());
  
  videoExport = new VideoExport(this, "screensaver.mp4");
  videoExport.setFrameRate(30); 
  videoExport.startMovie();
}

void draw() {
  background(20);
  strokeWeight(1);
  translate(width/2, height/2);
  for(float i = 0; i < NUM_LINES; i+=0.1) {
    stroke(240, 240, 240, (255 / NUM_LINES) * i);
    line(x1(t+i), y1(t+i), x2(t+i), y2(t+i));
  }
  t+=0.5;
  videoExport.saveFrame();
}

float x1(float t) {
  return sin(t/10)*100; 
}

float y1(float t) {
  return cos(t/10)*100; 
}

float x2(float t) {
  return cos(t/20)*200+sin(t/10)*100; 
}

float y2(float t) {
  return sin(t/20)*200+cos(t+2/10)*20; 
}