protected HashSet <int[]> GetArea(int[,] mask, int xpos, int ypos, out int[] borders, Func <int, int, bool> op, int valueToFind = 1, int stopSize = 50)
{
HashSet <int[]> ignore = new HashSet <int[]>();
//Loop and find value, trace all connected values and store them
borders = new int[4] {
int.MaxValue, int.MaxValue, 0, 0
};
if (mask[xpos, ypos] == valueToFind)
{
//begin traversal
HashSet <int[]> toCheck = new HashSet <int[]>();
toCheck.Add(new int[] { xpos, ypos });
while (toCheck.Count > 0)
{
var newPoints = GetSurroundingPoints(mask, ignore, toCheck.Last(), (x, y) => x == y, valueToFind);
int[] last = toCheck.Last();
ignore.Add(last);
borders = AdjustBorders(borders, last[0], last[1]);
toCheck.Remove(last);
toCheck.AddElementsUnique(newPoints);
}
}
return(ignore);
}
protected void NeatenHeights(ref int[,] geog, int maxSize, int[] bounds, MagickImage map, string thread)
{
HashSet <int[]> ignore = new HashSet <int[]>();
for (int x = bounds[0]; x < bounds[2]; x++)
{
for (int y = bounds[1]; y < bounds[3]; y++)
{
int[] vec = new int[] { x, y };
if (!ignore.ContainsItem(vec) && geog[x, y] < sealevel) //GetSurroundingPoints(geog, new HashSet<int[]>(), vec, (s,d) => x >= y, 1).Count > 2)
{
int[] borders;
var area = GetArea(geog, x, y, out borders, (a, b) => a <= b, 0, maxSize);
if (area.Count < maxSize + 1 && area.Count > 0)
{
foreach (var p in area)
{
int s = geog[p[0], p[1]];
geog[p[0], p[1]] = 1;
}
}
ignore.AddElementsUnique(area);
DrawPixels(map, area, geog);
}
}
}
Console.WriteLine("Thread: {0} - exiting", thread);
return;
}