/// <summary>
/// Get a region of tiles from a layer
/// </summary>
/// <param name="region"> Tile region </param>
/// <param name="layer"> Layer in context </param>
/// <returns> A region based from zero extracted from the layer </returns>
public WorldRegion GetLayerRegion(Rectangle region, int layer)
{
WorldLayer layerIn = GetLayer(layer);
WorldRegion regionOut = new WorldRegion(region.Width, region.Height);
for (int x = region.X, ox = 0; x < region.Right; x++, ox++)
{
for (int y = region.Y, oy = 0; y < region.Bottom; y++, oy++)
{
if (!PointInWorld(x, y))
{
regionOut[ox, oy] = null;
continue;
}
WorldTile i = layerIn[x, y];
regionOut[ox, oy] = i == null ? null : i.Clone();
}
}
return(regionOut);
}
