​

  constructor(jitter, level) {

    this.jitter = jitter;

    this.leavesTiming = level;

    this.init();

  }

​

  init() {

    this.branchCount = 0;

    this.branches = [];

    this.leaves = [];

​

    let start = createVector(width / 2, height);

    let end = createVector(width / 2, height - (height / 4));

​

    let thickness = 8;

    let rootBranch = new Branch(start, end, thickness);

​

    this.branches.push(rootBranch);

  }

​

  addBranches() {

    // 왜 true가 정상작동 안하는지 모르겠네...

    // 해결함: setup()에 넣어야할 초기화코드가 draw()에 넣어서 계속

    // 초기화되고 있어서 버그가 났음

​

    let bs = this.branches;

​

    // add two branches

    for (let i = bs.length - 1; i >= 0; i--) {

      if (!bs[i].finished) {

        bs.push(bs[i].makeRightBranch());

        bs.push(bs[i].makeLeftBranch());

​

        // bonus

        let r = random(floor(random(4)));

        if (r === 0) {

          bs.push(bs[i].makeMiddleBranch());

        }

​

        bs[i].finished = true;

      }

    }

​

    // branchCount++

    this.branchCount++;

​

​

    // init

    if (this.branchCount === this.leavesTiming + 1) {

      this.init();

    }

​

    // addLeaves

    if (this.branchCount === this.leavesTiming) {

      this.addLeaves();

    }

​

  }

​

  addLeaves() {

    for (let branch of this.branches) {

      if (!branch.finished) {

        let tEnd = branch.end;

​

        let leaf = new Leaf(tEnd, this.leavesTiming);

        this.leaves.push(leaf);

      }

    }

​

​

  }

​

  show() {

    // branches

    for (let branch of this.branches) {

      branch.show();

      if (this.jitter) {

        branch.jitter();

      }

    }

​

    // leaves

    for (let leaf of this.leaves) {

      leaf.show();

    }

​

​

  }

}