Processing - Random moving line and image export

processing-randomMovingLineAndExportImage.pde

int startX, startY, endX, endY;

int red, green, blue;

void setup() {
  startX = (width / 2) - 100;
  startY = (height / 2) - 100;
  endX = (width / 2) + 100;
  endY = (height / 2) + 100;

  red = 100;
  green = 50;
  blue = 120;

  strokeWeight(4);

  size(800, 1000);
}

void draw() {
  stroke(red, green, blue);
  line(startX, startY, endX, endY);

  startX += random(-3, 3);
  startY += random(-3, 3);
  endX += random(-3, 3);
  endY += random(-3, 3);

  if (startX > width) startX = 0;
  if (startX < 0) startX = width;
  if (startY > height) startY = 0;
  if (startY < 0) startY = height;

  if (endX > width) endX = 0;
  if (endX < 0) endX = width;
  if (endY > height) endY = 0;
  if (endY < 0) endY = height;

  red += random(-2, 2);
  green += random(-2, 2);
  blue += random(-2, 2);

  if (red > 255) red = 0;
  if (red < 0) red = 255;
  if (green > 255) green = 0;
  if (green < 0) green = 255;
  if (blue > 255) blue = 0;
  if (blue < 0) blue = 255;
}


void keyPressed() {
  save("generatedImage.jpg");
}