​

}

​

let branchLength = 10;

let angle = Math.PI / 2;

​

function renderString(string) {

  for (let character of string) {

    if (character == 'F') {

      line(0, 0, 0, -branchLength);

      translate(0, -branchLength);

    } else if (character == '+') {

      rotate(angle);

    } else if (character == '-') {

      rotate(-angle);

    } else if (character == '[') {

      push();

    } else if (character == ']') {

      pop();

    }

  }

}