pixelDensity(1);

  createCanvas(800, 800)

  background(0)

  loadPixels()

  // start position

  let line_length = 150 // also scale

  let offx = (height / 2 - line_length / 2) * width * 4 + (width / 2 - line_length * 5 / 2) * 4

  for (let i = 0; i < line_length; i += 1) {

    for (let k = 0; k < 3; k += 1) { // just to handle all color components

      let c = 255 // color

      // O

      pixels[offx + (i * width) * 4 + k] = c

      pixels[offx + (line_length + i * width) * 4 + k] = c

      pixels[offx + i * 4 + k] = c

      pixels[offx + (i + line_length * width) * 4 + k] = c

      // R

      pixels[offx + (line_length*2+i * width) * 4 + k] = c

      pixels[offx + (line_length*2+i) * 4 + k] = c

      // Z

      pixels[offx + (i + line_length*4) * 4 + k] = c

      pixels[offx + (i + line_length*4 + (line_length - i) * width) * 4 + k] = c

      pixels[offx + (i + line_length*4 + line_length * width) * 4 + k] = c

    }

  }

  updatePixels()

}

​

function draw() {

​

}