public string Encrypt(string input)
{
var normalizedInput = this.NormalizeStringForEncrypting(input);
var grid = new StringGrid(this.GridHeight, this.GridWidth, normalizedInput);
ApplyRotationalTransformToGrid(grid, true);
throw new NotImplementedException();
}
/// <summary>
/// </summary>
/// <param name="grid"></param>
/// <param name="counterClockwise">If set to true will roate the grid counter-clockwise, otherwise the grid will be rotated clockwise.</param>
/// <returns>A newly rotated StringGrid based on the input grid</returns>
private StringGrid ApplyRotationalTransformToGrid(StringGrid grid, bool clockwise = true)
{
var z = @"W E A R E D I S C
O V E R E D F L E
E A T O N C E + +";
var z2 = "CEXXECNOTAEOWEAREDISLFDEREV";
var output = new char[grid.Length];
var startingPoint = new Point((grid.Width - 1), 0);
var currentPoint = new Point(startingPoint.X, startingPoint.Y);
var incrementDirection = (clockwise ? 1 : -1);
var maxX = grid.Width;
var maxY = grid.Height;
for (int i = 0; i < grid.Length; i++)
{
var isEndingCharacter = (i == (grid.Length - 1));
var currentCharacter = grid[currentPoint.Y, currentPoint.X];
if (isEndingCharacter)
{
output[Get2DPointAsLinearIndex(startingPoint)] = currentCharacter;
}
else
{
output[i] = currentCharacter;
}
var isAtEndOfRow = (currentPoint.X >= (maxX - 1));
var isAtBeginningOfRow = (currentPoint.X == 0);
var isAtEndOfColumn = (currentPoint.Y >= (maxY - 1));
var isAtBeginningOfColumn = (currentPoint.Y == 0);
// are we at a single point after the first row of characters in the grid (and is the grid bigger than a single row)
var isAtASinglePointPastFirstRow = (grid.Width + 1 < grid.Length && i == grid.Width + 1);
// Reduce the grid size by 1 so we can start a smaller loop
if (isAtASinglePointPastFirstRow && (isAtBeginningOfRow && isAtBeginningOfColumn) || (isAtEndOfColumn && isAtEndOfRow))
{
maxX--;
maxY--;
}
if (isAtEndOfRow && !isAtEndOfColumn)
{
currentPoint.Y++;
}
else if (isAtEndOfRow && isAtEndOfColumn)
{
currentPoint.X--;
incrementDirection = (incrementDirection * -1);
}
else if (isAtBeginningOfRow && !isAtBeginningOfColumn)
{
currentPoint.Y--;
}
else if (isAtBeginningOfRow && isAtBeginningOfColumn)
{
currentPoint.X++;
incrementDirection = (incrementDirection * -1);
}
else
{
currentPoint.X += incrementDirection;
}
}
throw new NotImplementedException();
}
private bool IsCoordinateOutOfBoundsY(StringGrid grid, int y)
{
return(y >= grid.Height);
}
private bool IsCoordinateOutOfBoundsBoth(StringGrid grid, int x, int y)
{
return(IsCoordinateOutOfBoundsX(grid, x) && IsCoordinateOutOfBoundsY(grid, y));
}
private bool IsCoordinateOutOfBoundsX(StringGrid grid, int x)
{
return(x >= grid.Width);
}