// The Symmetrical Scribble Machine will draw lines from your mouse randomly with symmetry

//

// Directions:

//

// Click and Hold to randomly draw white lines

//

// Hold Shift + Hold Click to draw rainbow lines

//

// Hold Alt + Click will delete the canvas

//

​

const spreadAmount = 12;

let strokeC;

​

function setup() {

  createCanvas(400, 400);

  background(0);

​

  let initialLock = false;

  let colorLock = false;

​

  let lastX,

    lastY,

    newX,

    newY = 0;

​

  strokeColor = color(255, 255, 255);

}

​

function draw() {

  if (mouseIsPressed) {

    if (!colorLock) {

      strokeColor = color(255, 255, 255);

    } else {

      changeColors();

    }

​

    strokeWeight(1.5);

    stroke(strokeColor);

​

    if (!initialLock) {

      initialLock = true;

​

      newX = mouseX + random(-spreadAmount, spreadAmount);

      newY = mouseY + random(-spreadAmount, spreadAmount);

​

      line(mouseX, mouseY, newX, newY);

      line(width - mouseX, mouseY, width - newX, newY);

​

      lastX = newX;

      lastY = newY;

    } else {

      newX = lastX + random(-spreadAmount, spreadAmount);

      newY = lastY + random(-spreadAmount, spreadAmount);

​

      line(lastX, lastY, newX, newY);

      line(width - lastX, lastY, width - newX, newY);

​

      lastX = newX;

      lastY = newY;

    }

  } else {

    initialLock = false;

  }

}

​

function mousePressed(event) {

  if (event.shiftKey) {

    colorLock = true;

  } else if (event.altKey) {

    background(0);

  } else {

    strokeColor = color(255, 255, 255);

    colorLock = false;

  }

}

​

function changeColors() {

  strokeColor = color(random(0, 255), random(0, 255), random(0, 255));

}

​