private Tuple <int, int> GetNextCoordinate()
{
var lastPoint = _spiralGrid.Last();
var layer = SpiralGridCalculator.GetLayer(lastPoint.index + 1);
// Right edge
if (lastPoint.x == layer)
{
// If top corner, go left
if (lastPoint.y == layer)
{
return(new Tuple <int, int>(lastPoint.x - 1, lastPoint.y));
}
// Otherwise, if not bottom corner, right edge goes up
if (lastPoint.y != -layer)
{
return(new Tuple <int, int>(lastPoint.x, lastPoint.y + 1));
}
}
// Top edge
if (lastPoint.y == layer)
{
// If left corner, go down
if (lastPoint.x == -layer)
{
return(new Tuple <int, int>(lastPoint.x, lastPoint.y - 1));
}
// Otherwise top edge goes left
return(new Tuple <int, int>(lastPoint.x - 1, lastPoint.y));
}
// Left edge
if (lastPoint.x == -layer)
{
// If bottom corner, go right
if (lastPoint.y == -layer)
{
return(new Tuple <int, int>(lastPoint.x + 1, lastPoint.y));
}
// Otherwise, go down
return(new Tuple <int, int>(lastPoint.x, lastPoint.y - 1));
}
// Bottom edge always goes right
if (lastPoint.y == -layer)
{
return(new Tuple <int, int>(lastPoint.x + 1, lastPoint.y));
}
throw new Exception("Shouldn't be able to get here");
}
static void Main(string[] args)
{
Console.Write("Input square number: ");
var input = Console.ReadLine();
var squareNum = int.Parse(input);
Console.WriteLine(
"Distance to access point: {0}",
SpiralGridCalculator.GetManhattanDistanceToSquareOne(squareNum));
var generator = new AdjacentSumSpiralGridGenerator();
var value = 0;
while (value <= squareNum)
{
value = generator.GetNextValue();
}
Console.WriteLine("First value higher than {0}: {1}", squareNum, value);
Console.ReadLine();
}