public double this[GridIndex i]
{
get
{
if (CanIndex(i))
{
return(m_Data[i.I, i.J]);
}
else
{
throw new IndexOutOfRangeException();
}
}
set
{
if (CanIndex(i))
{
m_Data[i.I, i.J] = value;
}
else
{
throw new IndexOutOfRangeException();
}
}
}
public GridRegion Shrink(int margin)
{
var pos = new GridIndex(Pos.I + margin, Pos.J + margin);
var size = new GridSize(Size.Width - 2 * margin, Size.Height - 2 * margin);
if (size.Height < 0 || size.Width < 0)
{
throw new InvalidOperationException("Region cannot shrink.");
}
return(new GridRegion(pos, size));
}
public GridRegion(GridIndex pos, GridSize size)
{
if (pos == null)
{
throw new ArgumentException("pos can't be null.");
}
if (size == null)
{
throw new ArgumentException("size can't be null.");
}
Pos = pos;
Size = size;
}
public bool IsInside(GridIndex index)
{
return(index.I >= Pos.I && index.I < Pos.I + Size.Height && index.J >= Pos.J && index.J < Pos.J + Size.Width);
}
public bool CanIndex(GridIndex index) => Bounds.IsInside(index) && !Inaccessable.IsInside(index);
public bool CanIndex(GridIndex index) => Bounds.IsInside(index);
