private static void MatrixCycle(int rowFromInclusive, int rowToInclusive, int columnFromInclusive, int columnToInclusive, int yStride, int xStride, int maxDegreeOfParallelism, InnerCycle innerCycle, CancellationToken cancellationToken = default)
{
OutOfRangeException.Check(nameof(maxDegreeOfParallelism), maxDegreeOfParallelism, 0);
var iRows = new List <int>();
for (var iRow = rowFromInclusive; iRow <= rowToInclusive; iRow += yStride)
{
iRows.Add(iRow);
}
if (maxDegreeOfParallelism > 1)
{
Parallel.ForEach(iRows,
new ParallelOptions
{
MaxDegreeOfParallelism = maxDegreeOfParallelism,
CancellationToken = cancellationToken
},
iRow =>
{
var row = (iRow - rowFromInclusive) / yStride;
ColumnCycle(columnFromInclusive, columnToInclusive, iRow, row, xStride, innerCycle);
});
}
else
{
var row = 0;
foreach (var iRow in iRows)
{
ColumnCycle(columnFromInclusive, columnToInclusive, iRow, row, xStride, innerCycle);
row++;
}
}
/// <summary>
/// Create rectangle from center coordinates and height / width
/// </summary>
/// <param name="y">center row</param>
/// <param name="x">center column</param>
/// <param name="rows">total height</param>
/// <param name="columns">total width</param>
/// <returns>a new rectangle</returns>
public static Rectangle FromCenter(int y, int x, int rows, int columns)
{
EvenException.Check(nameof(rows), rows);
EvenException.Check(nameof(columns), columns);
OutOfRangeException.Check(nameof(rows), rows, 1);
OutOfRangeException.Check(nameof(columns), columns, 1);
var relHeight = (rows - 1) / 2;
var relWidth = (columns - 1) / 2;
var top = y - relHeight;
var left = x - relWidth;
var region = new Rectangle(left, top, columns, rows);
return(region);
}
public void OutOfRange_Exception_ToBig1()
{
Assert.Catch <OutOfRangeException>(() => OutOfRangeException.Check("", 11, max: 10));
}
public void OutOfRange()
{
OutOfRangeException.Check("", 1, 0, 10);
Assert.Pass();
}
public void OutOfRange_Exception_ToSmall1()
{
Assert.Catch <OutOfRangeException>(() => OutOfRangeException.Check("", 1, 5));
}