public double GetFulfilment()
{
return((double)PlacedObjects.Sum(o => (o as Object3D).Width * (o as Object3D).Height * (o as Object3D).Depth) / Volume);
}
public double GetFulfilment()
{
return((double)PlacedObjects.Sum(o => (o as Object2D).Width * (o as Object2D).Height) / Area);
}