createCanvas(600,600);

  // background('black');

  background('#000035');

  stroke('#FAF9F6');

  let turtleString = "F";

  for (let i=0; i < 4; i++) {

   turtleString = turtleString.replaceAll("F","FF-++[+F]-[F+F-]+--FF");

       turtleString2 = turtleString.replaceAll("F","F+[+F][F+F-]--++");

  }

  push();

    print(turtleString);

    // stroke('white');

    strokeWeight(.3);

    translate(width/1.2,height/1.5);

    renderString(turtleString);

  pop();

  // push();

  //   print(turtleString2);

  //     strokeWeight(.1);

  //   translate(width/2,height/2);

  //   renderString(turtleString2);

  // pop();

}

​

let branchLength = 20;

let angle = Math.PI / 10;

​

​

function renderString(string) {

  for (let character of string) {

    if (character == 'F') {

        strokeWeight(branchLength / 30);

      line(0, 0, 0, -branchLength);

      translate(0, -branchLength);

    } else if (character == '+') {

      rotate(angle);

    } else if (character == '-') {

      rotate(-angle);

    } else if (character == '[') {

      branchLength /= 2;

      push();

    } else if (character == ']') {

       branchLength *= 2;

      pop();

    }

  // rotate(branchLength*3)

    // translate(1,-10);

  }

​

}