let rez = 400;

function setup() {

  createCanvas(400, 400);

  for(let i = 0; i < width / rez + 1; i++){

    let k = [];

    for(let j = 0; j < height / rez + 1; j++){

      k.push(round(random(1)));

    }

    field.push(k);

  }

  print(field);

}

​

function draw() {

  background(220);

  strokeWeight(rez * 0.4);

  for(let i = 0; i < height / rez + 1; i++){

    for(let j = 0; j < width / rez + 1; j++){

      stroke(field[i][j] * -255 + 255);

      point(j * rez, i * rez);

      //quad(j * rez + (field[i][j] + field[i][j + 1] / 2) * rez, i * rez + (field[i][j] + field[i][j + 1] / 2) * rez, j * rez + (field[i][j] + field[i][j + 1] / 2) * rez, j * rez + (field[i][j] + field[i][j + 1] / 2) * rez, );

    }

  }

}