​

class BitmapInteger

{

  static get TW() { return 8; }

  static get TH() { return 8; }

  constructor(img)

  {

    this.Image = img;

    this.W = img.width;

    this.H = img.height;

    this.Cols = Math.ceil(this.W / BitmapInteger.TW);

    this.Rows = Math.ceil(this.H / BitmapInteger.TH);

    this.grid = [];

    for (let x = 0; x < this.Cols; ++x)

    {

      const col = [];

      for (let y = 0; y < this.Rows; ++y)

      {

        const tile = new BitmapIntegerTile(this, x, y);

      }

    }

  }

}

​

​

class BitmapIntegerTile

{

  constructor(owner, tx, ty)

  {

    this.Owner = owner;

    this.TX = tx;

    this.TY = ty;

    this.Value = this.ToInt();

  }

  ToInt()

  {

    let value = 0n;

    let bitIndex = 0;

    for (let j = 0; j < BitmapInteger.TW; ++j)

    {

      for (let i = 0; i < BitmapInteger.TH; ++i)

      {

        const x = this.TX * BitmapInteger.TW + i;

        const y = this.TY * BitmapInteger.TH + j;

        const p = 4 * (x + this.Owner.W * y);

        const r = this.Owner.Image.pixels[p];

        const bit = +(r > 0);

        value |= bit << bitIndex;

        ++bitIndex;

      }

    }

  }

}

​