public bool this[Position p]
{
get { return this[p.X, p.Y]; }
set { this[p.X, p.Y] = value; }
}
private void DrawMember(Position pos, double nodeW, double nodeH, double padding, Color color, string title)
{
var poly = new Polygon();
poly.Points.Add(new Point(padding, padding));
poly.Points.Add(new Point(nodeW - padding, padding));
poly.Points.Add(new Point(nodeW - padding, nodeH - padding));
poly.Points.Add(new Point(padding, nodeH - padding));
poly.Points.Add(new Point(padding, padding));
poly.Fill = new SolidColorBrush(color);
var xs = pos.X * nodeW + (pos.Y % 2 == 0 ? 0.0 : nodeW / 2);
var ys = pos.Y * nodeH;
Canvas.SetLeft(poly, xs);
Canvas.SetTop(poly, ys);
if (title != null)
{
var titleBlock = new TextBlock();
titleBlock.Text = title;
Canvas.SetLeft(titleBlock, xs);
Canvas.SetTop(titleBlock, ys);
host.Children.Add(titleBlock);
}
host.Children.Add(poly);
}
private static double GetHiddenHoles(Field field)
{
int result = 0;
for (int y = 0; y < field.Height - 1; y++)
{
for (int x = 0; x < field.Width - 1; x++)
{
if (field[x, y] && field[x + 1, y])
{
var underCell = new Position(x, y).Translate(MoveDirection.SouthEast);
if (!field[underCell])
result++;
}
}
}
return result;
}
public double DistanceTo(Position other)
{
int dx = (other.X - X);
int dy = (other.Y - Y);
return Math.Sqrt(dx*dx + dy*dy);
}
/*private static Position GetBottomOpenPosition(Field field)
{
Position min = new Position(-1, field.Height);
for (int x = 0; x < field.Width; x++)
{
int y = 0;
// drop down until cells is empty
while (y < field.Height && !field[x, y])
{
y++;
}
if (y <= min.Y)
{
min = new Position(x, y);
}
}
return min;
}*/
private static unsafe Position GetBottomOpenPosition(Field field)
{
var w = field.Width;
var h = field.Height;
fixed (byte* ptr = field.Cells)
{
Position min = new Position(-1, h);
for (int x = 0; x < w; x++)
{
int y = 0;
// drop down until cells is empty
var offset = x + y * w;
var v = ptr[offset >> 3] & (1 << (offset & 7));
while (y < h && v != 0)
{
y++;
}
if (y <= min.Y)
{
min = new Position(x, y);
}
}
return min;
}
}
