PsmFramework.Engines.DrawEngine2d.TiledTextures.ColumnIndex.BuildKeyList C# (CSharp) Méthode

        private void BuildKeyList(Int32 columns)
        {
            if(columns < 1 || columns > TiledTexture.Texture.Width)
                throw new ArgumentOutOfRangeException();

            if(TiledTexture.Texture.Width % columns != 0)
                throw new ArgumentOutOfRangeException();

            Int32 tileWidth = TiledTexture.Texture.Width / columns;
            Int32 tileHeight = TiledTexture.Texture.Height;

            for(Int32 c = 0; c < columns; c++)
            {
                Int32 left = c * tileWidth;
                Int32 top = 0;
                Int32 right = left + tileWidth;
                Int32 bottom = tileHeight;

                Texture2dArea area = new Texture2dArea(left, top, right, bottom, TiledTexture.Texture.Width, TiledTexture.Texture.Height);

                ColumnKey key = new ColumnKey(this, c, area);
                Keys.Add(c, key);
            }
        }