private static void writeOutTiles(int serverNO, int spaceDimension, Coords[] partition)
{
StringBuilder strBldr = new StringBuilder();
StringBuilder strBldrForServers = new StringBuilder();
for (int idx = 0; idx < serverNO; idx++)
{
strBldrForServers.Append(partition[idx].HeftOfRegion);
strBldrForServers.Append(" ").Append(idx);
strBldrForServers.AppendLine();
partition[idx].printCoords(spaceDimension, idx + 1);
partition[idx].writeToStringBuilder(spaceDimension, strBldr);
}
string tilesOutput = @"c:\temp\data\tiles.dat";
System.IO.File.WriteAllText(tilesOutput, strBldr.ToString());
string serversOutput = @"c:\temp\data\servers.dat";
System.IO.File.WriteAllText(serversOutput, strBldrForServers.ToString());
}
public Coords[] determinePartition()
{
int[] indicesArray = new int[2 * spaceDimension];
for (int idx = 0; idx < spaceDimension; idx++)
{
indicesArray[2 * idx] = 0;
indicesArray[2 * idx + 1] = histogramResolution - 1;
}
Coords coords = new Coords
{
IndicesArray = indicesArray,
HeftOfRegion = (int)heftArray.GetValue(indicesArray),
MaxDiv = 0.0
};
innerDetermineMaxDivAndChildren(coords);
innerDeterminePartition(coords.FirstChild, coords.SecondChild);
return listOfLeaves.ToArray();
}
private void innerDeterminePartition(Coords coords1, Coords coords2)
{
innerDetermineMaxDivAndChildren(coords1);
innerDetermineMaxDivAndChildren(coords2);
listOfLeaves.Add(coords1);
listOfLeaves.Add(coords2);
if (listOfLeaves.Count < serverNO)
{
listOfLeaves.Sort(new Comparison<Coords>((c1, c2) => c2.MaxDiv.CompareTo(c1.MaxDiv)));
Coords leafWithMaxDiv = listOfLeaves[0];
Coords firstChildOfLeafWithMaxDiv = leafWithMaxDiv.FirstChild;
Coords secondChildOfLeafWithMaxDiv = leafWithMaxDiv.SecondChild;
listOfLeaves.Remove(leafWithMaxDiv);
innerDeterminePartition(firstChildOfLeafWithMaxDiv, secondChildOfLeafWithMaxDiv);
}
}
private void innerDetermineMaxDivAndChildren(Coords coords)
{
int[] maxFirstChildIndicesArray, maxSecondChildIndicesArray;
// The following is only for initialization:
maxFirstChildIndicesArray = maxSecondChildIndicesArray = coords.IndicesArray;
int cellNO = (int)Math.Pow(histogramResolution, spaceDimension);
int[] movingIndicesArray = new int[spaceDimension];
for (int movingIdx = 0; movingIdx < cellNO; movingIdx++)
{
transformator.transformCellIdxToIndicesArray(histogramResolution, movingIndicesArray, movingIdx);
for (int splitDimIdx = 0; splitDimIdx < spaceDimension; splitDimIdx++)
{
bool validMovingIndicesArray = transformator.validateIndicesArrays(spaceDimension, splitDimIdx,
coords.IndicesArray, movingIndicesArray);
if (validMovingIndicesArray)
{
int[] firstPartIndicesArray, secondPartIndicesArray;
int[] firstWindow, secondWindow;
transformator.splitIndicesArrays(spaceDimension, splitDimIdx, coords.IndicesArray,
movingIndicesArray, out firstPartIndicesArray, out secondPartIndicesArray);
transformator.determineWindowsOfSplitSides(spaceDimension, splitDimIdx, coords.IndicesArray,
movingIndicesArray, slidingWindowSize, histogramResolution,
out firstWindow, out secondWindow);
double currentDiv = determineCurrentDiv(firstWindow, secondWindow, firstPartIndicesArray, secondPartIndicesArray);
if (coords.MaxDiv < currentDiv)
{
coords.MaxDiv = currentDiv;
maxFirstChildIndicesArray = firstPartIndicesArray;
maxSecondChildIndicesArray = secondPartIndicesArray;
}
}
}
}
Coords firstChild = new Coords
{
IndicesArray = maxFirstChildIndicesArray,
HeftOfRegion = (int)heftArray.GetValue(maxFirstChildIndicesArray),
MaxDiv = 0.0,
};
coords.FirstChild = firstChild;
Coords secondChild = new Coords
{
IndicesArray = maxSecondChildIndicesArray,
HeftOfRegion = (int)heftArray.GetValue(maxSecondChildIndicesArray),
MaxDiv = 0.0,
};
coords.SecondChild = secondChild;
}
