private void DiamondStep(IWorkingArray extendedArray, int sideLength)
{
for (int x = 0; x < extendedArray.SideLength() - 1; x += sideLength)
{
for (int y = 0; y < extendedArray.SideLength() - 1; y += sideLength)
{
double average =
(extendedArray.GetValue(x, y) +
extendedArray.GetValue(x + sideLength, y) +
extendedArray.GetValue(x, y + sideLength) +
extendedArray.GetValue(x + sideLength, y + sideLength)) / 4;
float value = CalculateNextHeight(average, x + sideLength / 2, y + sideLength / 2);
extendedArray.SetValue(x + sideLength / 2, y + sideLength / 2, value);
}
}
}
private void SquareStep(IWorkingArray extendedArray, int sideLength)
{
int half = sideLength / 2;
int wholeLength = extendedArray.SideLength();
for (int x = 0; x < wholeLength - 1; x += half)
{
for (int y = (x + half) % sideLength; y < wholeLength - 1; y += sideLength)
{
double average =
(extendedArray.GetValue((x - half + wholeLength - 1) % (wholeLength - 1), y) +
extendedArray.GetValue((x + half) % (wholeLength - 1), y) +
extendedArray.GetValue(x, (y + half) % (wholeLength - 1)) +
extendedArray.GetValue(x, (y - half + wholeLength - 1) % (wholeLength - 1))) / 4;
float value = CalculateNextHeight(average, x + sideLength / 2, y + sideLength / 2);
extendedArray.SetValue(x + sideLength / 2, y + sideLength / 2, value);
}
}
}