public static MaskedGrid FromTextFile(string fileName)
{
var lines = File.ReadAllLines(fileName);
int rows = lines.Length;
int columns = lines[0].Length;
var mask = new Mask(rows, columns);
for (int i = 0; i < rows; i++)
{
for (int j = 0; j < columns; j++)
{
if (lines[i][j] == 'X')
{
mask.SetMask(i, j, false);
}
}
}
return(MaskedGrid.CreateGrid(mask));
}
public static MaskedGrid MakeCircle(int rows, int columns)
{
var mask = new Mask(rows, columns);
double borderSqr = Math.Pow(0.5 * Math.Min(rows - 1, columns - 1), 2);
for (int i = 0; i < rows; i++)
{
for (int j = 0; j < columns; j++)
{
var rdist = i - (0.5 * rows) + 0.5;
var cdist = j - (0.5 * columns) + 0.5;
double distSqr = (rdist * rdist) + (cdist * cdist);
if (distSqr > borderSqr)
{
mask.SetMask(i, j, false);
}
}
}
return(MaskedGrid.CreateGrid(mask));
}
public static MaskedGrid FromImage(string fileName)
{
var image = Image.FromFile(fileName);
Bitmap bitmap = new Bitmap(image);
int rows = bitmap.Height;
int columns = bitmap.Width;
var mask = new Mask(rows, columns);
for (int i = 0; i < rows; i++)
{
for (int j = 0; j < columns; j++)
{
if (bitmap.GetPixel(j, i).GetBrightness() < 0.1)
{
mask.SetMask(i, j, false);
}
}
}
return(MaskedGrid.CreateGrid(mask));
}
