IsometricCullTiles = function (layer, camera, outputArray, renderOrder)
{
    if (outputArray === undefined) { outputArray = []; }
    if (renderOrder === undefined) { renderOrder = 0; }

    outputArray.length = 0;

    var tilemapLayer = layer.tilemapLayer;

    var mapData = layer.data;
    var mapWidth = layer.width;
    var mapHeight = layer.height;
    var skipCull = tilemapLayer.skipCull;

    var drawLeft = 0;
    var drawRight = mapWidth;
    var drawTop = 0;
    var drawBottom = mapHeight;

    var x;
    var y;
    var tile;

    if (renderOrder === 0)
    {
        //  right-down

        for (y = drawTop; y < drawBottom; y++)
        {
            for (x = drawLeft; x < drawRight; x++)
            {
                tile = mapData[y][x];

                if (!tile || tile.index === -1 || !tile.visible || tile.alpha === 0)
                {
                    continue;
                }

                if (!skipCull && !CheckIsoBounds(x, y, layer, camera))
                {
                    continue;
                }

                outputArray.push(tile);
            }
        }
    }
    else if (renderOrder === 1)
    {
        //  left-down

        for (y = drawTop; y < drawBottom; y++)
        {
            for (x = drawRight; x >= drawLeft; x--)
            {
                tile = mapData[y][x];

                if (!tile || tile.index === -1 || !tile.visible || tile.alpha === 0)
                {
                    continue;
                }

                if (!skipCull && !CheckIsoBounds(x, y, layer, camera))
                {
                    continue;
                }

                outputArray.push(tile);
            }
        }
    }
    else if (renderOrder === 2)
    {
        //  right-up

        for (y = drawBottom; y >= drawTop; y--)
        {
            for (x = drawLeft; x < drawRight; x++)
            {
                tile = mapData[y][x];

                if (!tile || tile.index === -1 || !tile.visible || tile.alpha === 0)
                {
                    continue;
                }

                if (!skipCull && !CheckIsoBounds(x, y, layer, camera))
                {
                    continue;
                }

                outputArray.push(tile);
            }
        }
    }
    else if (renderOrder === 3)
    {
        //  left-up

        for (y = drawBottom; y >= drawTop; y--)
        {
            for (x = drawRight; x >= drawLeft; x--)
            {
                tile = mapData[y][x];

                if (!tile || tile.index === -1 || !tile.visible || tile.alpha === 0)
                {
                    continue;
                }

                if (!skipCull && !CheckIsoBounds(x, y, layer, camera))
                {
                    continue;
                }

                outputArray.push(tile);
            }
        }
    }

    tilemapLayer.tilesDrawn = outputArray.length;
    tilemapLayer.tilesTotal = mapWidth * mapHeight;

    return outputArray;
}
Returns the tiles in the given layer that are within the cameras viewport. This is used internally.

@function Phaser.Tilemaps.Components.IsometricCullTiles
@since 3.50.0

@param {Phaser.Tilemaps.LayerData} layer - The Tilemap Layer to act upon.
@param {Phaser.Cameras.Scene2D.Camera} camera - The Camera to run the cull check against.
@param {array} [outputArray] - An optional array to store the Tile objects within.
@param {number} [renderOrder=0] - The rendering order constant.

@return {Phaser.Tilemaps.Tile[]} An array of Tile objects.