public static TCell[,] Overlay(Layer <TCell> layer1, Layer <TCell> layer2, IOverlay <TCell> overlayer)
{
var sizeX = Math.Min(layer1.SizeX, layer2.SizeX);
var sizeY = Math.Min(layer1.SizeY, layer2.SizeY);
var cells = new TCell[sizeX, sizeY];
for (var x = 0; x < sizeX; x++)
{
for (var y = 0; y < sizeY; y++)
{
cells[x, y] = overlayer.Overlay(layer1._cells[x, y], layer2._cells[x, y]);
}
}
return(cells);
}