/// <summary>
/// Recalculates the entire queue.
/// </summary>
public void RecalculateQueue()
{
OsmSharp.Logging.Log.TraceEvent("CHPreProcessor", TraceEventType.Information,
"Recalculating queue...");
uint total = _target.VertexCount;
uint current = 1;
double latestProgress = 0;
_queue.Clear();
for (uint currentVertex = 1; currentVertex <= total; currentVertex++)
{
if (!this.IsContracted(currentVertex))
{
var priority = _calculator.Calculate(currentVertex);
_queue.Push(currentVertex, priority);
_lowestPriorities[currentVertex] = priority;
float progress = (float)System.Math.Round((((double)current / (double)total) * 100));
if (progress != latestProgress)
{
//OsmSharp.Logging.Log.TraceEvent("CHPreProcessor", TraceEventType.Information,
// "Building CH Queue... {0}%", progress);
latestProgress = progress;
}
current++;
}
}
}
/// <summary>
/// Starts pre-processing all nodes
/// </summary>
/// <remarks>Returns the last-contracted vertex.</remarks>
public void Start()
{
_misses_queue = new Queue <bool>();
_misses = 0;
uint total = _target.VertexCount;
uint current = 1;
double latestProgress = 0;
for (uint current_vertex = 1; current_vertex <= total; current_vertex++)
{
float priority = _calculator.Calculate(current_vertex);
_queue.Enqueue(current_vertex, priority);
float progress = (float)System.Math.Round((((double)current / (double)total) * 100));
if (progress != latestProgress)
{
OsmSharp.Logging.Log.TraceEvent("CHPreProcessor", TraceEventType.Information,
"Building CH Queue... {0}%", progress);
latestProgress = progress;
}
current++;
}
// loop over the priority queue until it's empty.
current = 1;
uint?vertex = this.SelectNext();
latestProgress = 0;
while (vertex != null)
{
// contract the nodes.
this.Contract(vertex.Value);
// select the next vertex.
vertex = this.SelectNext();
double realProgress = (double)current / (double)total;
double progress = (float)System.Math.Round(realProgress * 100);
if (progress != latestProgress)
{
OsmSharp.Logging.Log.TraceEvent("CHPreProcessor", TraceEventType.Information,
"Pre-processing... {0}%", progress);
latestProgress = progress;
}
if (realProgress > _preProcessingPercentage)
{ // stop at a certain percentage.
break;
}
current++;
}
OsmSharp.Logging.Log.TraceEvent("CHPreProcessor", TraceEventType.Information,
"Pre-processing finsihed!");
}
/// <summary>
/// Starts pre-processing all nodes
/// </summary>
/// <remarks>Returns the last-contracted vertex.</remarks>
public void Start()
{
_misses_queue = new Queue <bool>();
_misses = 0;
uint total = _target.VertexCount;
uint current = 1;
for (uint current_vertex = 1; current_vertex < total; current_vertex++)
{
float priority = _calculator.Calculate(current_vertex);
lock (_queue)
{
_queue.Enqueue(current_vertex, priority);
if (current % 1000 == 0)
{
OsmSharp.Logging.Log.TraceEvent("CHPreProcessor", TraceEventType.Information,
"Building CH Queue...");
}
current++;
}
}
// loop over the priority queue until it's empty.
current = 1;
uint?vertex = this.SelectNext();
uint?lastestContracted = 0;
while (vertex != null)
{
// contract the nodes.
this.Contract(vertex.Value);
lastestContracted = vertex;
// select the next vertex.
vertex = this.SelectNext();
if (current % 1000 == 0)
{
OsmSharp.Logging.Log.TraceEvent("CHPreProcessor", TraceEventType.Information, "Pre-processing... {0}%", (int)(((float)current / (float)total) * 100));
}
current++;
}
}
public void TestCHEdgeDifferenceContractions()
{
IOsmRoutingInterpreter interpreter = new OsmSharp.Routing.Osm.Interpreter.OsmRoutingInterpreter();
CHPreProcessor processor = this.BuildCHPreProcessor(interpreter);
//processor.InitializeQueue();
INodeWeightCalculator edgeDifference = processor.NodeWeightCalculator;
Assert.AreEqual(1, edgeDifference.Calculate(1)); // witness paths from 2<->4.
Assert.AreEqual(6, edgeDifference.Calculate(2));
Assert.AreEqual(0, edgeDifference.Calculate(3));
Assert.AreEqual(0, edgeDifference.Calculate(4));
Assert.AreEqual(0, edgeDifference.Calculate(5));
Assert.AreEqual(0, edgeDifference.Calculate(6));
Assert.AreEqual(3, edgeDifference.Calculate(7));
Assert.AreEqual(3, edgeDifference.Calculate(8));
Assert.AreEqual(0, edgeDifference.Calculate(9));
Assert.AreEqual(3, edgeDifference.Calculate(10));
Assert.AreEqual(3, edgeDifference.Calculate(11));
Assert.AreEqual(0, edgeDifference.Calculate(12));
Assert.AreEqual(0, edgeDifference.Calculate(13));
Assert.AreEqual(0, edgeDifference.Calculate(14));
Assert.AreEqual(0, edgeDifference.Calculate(15));
Assert.AreEqual(3, edgeDifference.Calculate(16));
Assert.AreEqual(0, edgeDifference.Calculate(17));
Assert.AreEqual(0, edgeDifference.Calculate(18));
Assert.AreEqual(0, edgeDifference.Calculate(19));
Assert.AreEqual(-1, edgeDifference.Calculate(20));
Assert.AreEqual(0, edgeDifference.Calculate(21));
Assert.AreEqual(0, edgeDifference.Calculate(22));
Assert.AreEqual(-1, edgeDifference.Calculate(23));
// contract 20.
processor.Contract(20);
Assert.AreEqual(1, edgeDifference.Calculate(1)); // witness paths from 2<->4.
Assert.AreEqual(6, edgeDifference.Calculate(2));
Assert.AreEqual(0, edgeDifference.Calculate(3));
Assert.AreEqual(0, edgeDifference.Calculate(4));
Assert.AreEqual(0, edgeDifference.Calculate(5));
Assert.AreEqual(0, edgeDifference.Calculate(6));
Assert.AreEqual(3, edgeDifference.Calculate(7));
Assert.AreEqual(3, edgeDifference.Calculate(8));
Assert.AreEqual(0, edgeDifference.Calculate(9));
Assert.AreEqual(3, edgeDifference.Calculate(10));
Assert.AreEqual(3, edgeDifference.Calculate(11));
Assert.AreEqual(0, edgeDifference.Calculate(12));
Assert.AreEqual(0, edgeDifference.Calculate(13));
Assert.AreEqual(0, edgeDifference.Calculate(14));
Assert.AreEqual(0, edgeDifference.Calculate(15));
Assert.AreEqual(3, edgeDifference.Calculate(16));
Assert.AreEqual(0, edgeDifference.Calculate(17));
Assert.AreEqual(0, edgeDifference.Calculate(18));
Assert.AreEqual(0, edgeDifference.Calculate(19));
Assert.AreEqual(-1, edgeDifference.Calculate(21));
Assert.AreEqual(0, edgeDifference.Calculate(22));
Assert.AreEqual(-1, edgeDifference.Calculate(23));
// contract 21.
processor.Contract(21);
Assert.AreEqual(1, edgeDifference.Calculate(1)); // witness paths from 2<->4.
Assert.AreEqual(6, edgeDifference.Calculate(2));
Assert.AreEqual(0, edgeDifference.Calculate(3));
Assert.AreEqual(0, edgeDifference.Calculate(4));
Assert.AreEqual(0, edgeDifference.Calculate(5));
Assert.AreEqual(0, edgeDifference.Calculate(6));
Assert.AreEqual(3, edgeDifference.Calculate(7));
Assert.AreEqual(3, edgeDifference.Calculate(8));
Assert.AreEqual(0, edgeDifference.Calculate(9));
Assert.AreEqual(3, edgeDifference.Calculate(10));
Assert.AreEqual(3, edgeDifference.Calculate(11));
Assert.AreEqual(0, edgeDifference.Calculate(12));
Assert.AreEqual(0, edgeDifference.Calculate(13));
Assert.AreEqual(0, edgeDifference.Calculate(14));
Assert.AreEqual(0, edgeDifference.Calculate(15));
Assert.AreEqual(0, edgeDifference.Calculate(16));
Assert.AreEqual(0, edgeDifference.Calculate(17));
Assert.AreEqual(0, edgeDifference.Calculate(18));
Assert.AreEqual(0, edgeDifference.Calculate(19));
Assert.AreEqual(0, edgeDifference.Calculate(22));
Assert.AreEqual(-1, edgeDifference.Calculate(23));
// contract 23.
processor.Contract(23);
Assert.AreEqual(1, edgeDifference.Calculate(1)); // witness paths from 2<->4.
Assert.AreEqual(6, edgeDifference.Calculate(2));
Assert.AreEqual(0, edgeDifference.Calculate(3));
Assert.AreEqual(0, edgeDifference.Calculate(4));
Assert.AreEqual(0, edgeDifference.Calculate(5));
Assert.AreEqual(0, edgeDifference.Calculate(6));
Assert.AreEqual(3, edgeDifference.Calculate(7));
Assert.AreEqual(3, edgeDifference.Calculate(8));
Assert.AreEqual(0, edgeDifference.Calculate(9));
Assert.AreEqual(3, edgeDifference.Calculate(10));
Assert.AreEqual(3, edgeDifference.Calculate(11));
Assert.AreEqual(0, edgeDifference.Calculate(12));
Assert.AreEqual(0, edgeDifference.Calculate(13));
Assert.AreEqual(0, edgeDifference.Calculate(14));
Assert.AreEqual(0, edgeDifference.Calculate(15));
Assert.AreEqual(0, edgeDifference.Calculate(16));
Assert.AreEqual(0, edgeDifference.Calculate(17));
Assert.AreEqual(0, edgeDifference.Calculate(18));
Assert.AreEqual(0, edgeDifference.Calculate(19));
Assert.AreEqual(-1, edgeDifference.Calculate(22));
// contract 22.
processor.Contract(22);
Assert.AreEqual(1, edgeDifference.Calculate(1)); // witness paths from 2<->4.
Assert.AreEqual(6, edgeDifference.Calculate(2));
Assert.AreEqual(0, edgeDifference.Calculate(3));
Assert.AreEqual(0, edgeDifference.Calculate(4));
Assert.AreEqual(0, edgeDifference.Calculate(5));
Assert.AreEqual(0, edgeDifference.Calculate(6));
Assert.AreEqual(3, edgeDifference.Calculate(7));
Assert.AreEqual(3, edgeDifference.Calculate(8));
Assert.AreEqual(0, edgeDifference.Calculate(9));
Assert.AreEqual(3, edgeDifference.Calculate(10));
Assert.AreEqual(3, edgeDifference.Calculate(11));
Assert.AreEqual(0, edgeDifference.Calculate(12));
Assert.AreEqual(0, edgeDifference.Calculate(13));
Assert.AreEqual(0, edgeDifference.Calculate(14));
Assert.AreEqual(0, edgeDifference.Calculate(15));
Assert.AreEqual(-1, edgeDifference.Calculate(16));
Assert.AreEqual(0, edgeDifference.Calculate(17));
Assert.AreEqual(0, edgeDifference.Calculate(18));
Assert.AreEqual(0, edgeDifference.Calculate(19));
// contract 16.
processor.Contract(16);
Assert.AreEqual(1, edgeDifference.Calculate(1)); // witness paths from 2<->4.
Assert.AreEqual(6, edgeDifference.Calculate(2));
Assert.AreEqual(0, edgeDifference.Calculate(3));
Assert.AreEqual(0, edgeDifference.Calculate(4));
Assert.AreEqual(0, edgeDifference.Calculate(5));
Assert.AreEqual(0, edgeDifference.Calculate(6));
Assert.AreEqual(3, edgeDifference.Calculate(7));
Assert.AreEqual(3, edgeDifference.Calculate(8));
Assert.AreEqual(0, edgeDifference.Calculate(9));
Assert.AreEqual(3, edgeDifference.Calculate(10));
Assert.AreEqual(3, edgeDifference.Calculate(11));
Assert.AreEqual(0, edgeDifference.Calculate(12));
Assert.AreEqual(0, edgeDifference.Calculate(13));
Assert.AreEqual(0, edgeDifference.Calculate(14));
Assert.AreEqual(0, edgeDifference.Calculate(15));
Assert.AreEqual(-1, edgeDifference.Calculate(17));
Assert.AreEqual(0, edgeDifference.Calculate(18));
Assert.AreEqual(0, edgeDifference.Calculate(19));
// contract 17.
processor.Contract(17);
Assert.AreEqual(1, edgeDifference.Calculate(1)); // witness paths from 2<->4.
Assert.AreEqual(6, edgeDifference.Calculate(2));
Assert.AreEqual(0, edgeDifference.Calculate(3));
Assert.AreEqual(0, edgeDifference.Calculate(4));
Assert.AreEqual(0, edgeDifference.Calculate(5));
Assert.AreEqual(0, edgeDifference.Calculate(6));
Assert.AreEqual(0, edgeDifference.Calculate(7));
Assert.AreEqual(3, edgeDifference.Calculate(8));
Assert.AreEqual(0, edgeDifference.Calculate(9));
Assert.AreEqual(3, edgeDifference.Calculate(10));
Assert.AreEqual(3, edgeDifference.Calculate(11));
Assert.AreEqual(0, edgeDifference.Calculate(12));
Assert.AreEqual(0, edgeDifference.Calculate(13));
Assert.AreEqual(0, edgeDifference.Calculate(14));
Assert.AreEqual(0, edgeDifference.Calculate(15));
Assert.AreEqual(0, edgeDifference.Calculate(18));
Assert.AreEqual(0, edgeDifference.Calculate(19));
processor.Contract(3);
Assert.AreEqual(1, edgeDifference.Calculate(1)); // witness paths from 2<->4.
Assert.AreEqual(6, edgeDifference.Calculate(2));
Assert.AreEqual(-2, edgeDifference.Calculate(4));
Assert.AreEqual(0, edgeDifference.Calculate(5));
Assert.AreEqual(0, edgeDifference.Calculate(6));
Assert.AreEqual(0, edgeDifference.Calculate(7));
Assert.AreEqual(3, edgeDifference.Calculate(8));
Assert.AreEqual(0, edgeDifference.Calculate(9));
Assert.AreEqual(3, edgeDifference.Calculate(10));
Assert.AreEqual(3, edgeDifference.Calculate(11));
Assert.AreEqual(0, edgeDifference.Calculate(12));
Assert.AreEqual(0, edgeDifference.Calculate(13));
Assert.AreEqual(0, edgeDifference.Calculate(14));
Assert.AreEqual(0, edgeDifference.Calculate(15));
Assert.AreEqual(0, edgeDifference.Calculate(18));
Assert.AreEqual(0, edgeDifference.Calculate(19));
processor.Contract(4);
Assert.AreEqual(0, edgeDifference.Calculate(1)); // witness paths from 2<->4.
Assert.AreEqual(3, edgeDifference.Calculate(2));
Assert.AreEqual(0, edgeDifference.Calculate(5));
Assert.AreEqual(0, edgeDifference.Calculate(6));
Assert.AreEqual(0, edgeDifference.Calculate(7));
Assert.AreEqual(3, edgeDifference.Calculate(8));
Assert.AreEqual(0, edgeDifference.Calculate(9));
Assert.AreEqual(3, edgeDifference.Calculate(10));
Assert.AreEqual(3, edgeDifference.Calculate(11));
Assert.AreEqual(0, edgeDifference.Calculate(12));
Assert.AreEqual(0, edgeDifference.Calculate(13));
Assert.AreEqual(0, edgeDifference.Calculate(14));
Assert.AreEqual(0, edgeDifference.Calculate(15));
Assert.AreEqual(0, edgeDifference.Calculate(18));
Assert.AreEqual(0, edgeDifference.Calculate(19));
processor.Contract(1);
Assert.AreEqual(1, edgeDifference.Calculate(2)); // witness paths from 11<->5.
Assert.AreEqual(-2, edgeDifference.Calculate(5)); // witness paths from 11<->6.
Assert.AreEqual(0, edgeDifference.Calculate(6));
Assert.AreEqual(0, edgeDifference.Calculate(7));
Assert.AreEqual(3, edgeDifference.Calculate(8));
Assert.AreEqual(0, edgeDifference.Calculate(9));
Assert.AreEqual(3, edgeDifference.Calculate(10));
Assert.AreEqual(3, edgeDifference.Calculate(11));
Assert.AreEqual(0, edgeDifference.Calculate(12));
Assert.AreEqual(0, edgeDifference.Calculate(13));
Assert.AreEqual(0, edgeDifference.Calculate(14));
Assert.AreEqual(0, edgeDifference.Calculate(15));
Assert.AreEqual(0, edgeDifference.Calculate(18));
Assert.AreEqual(0, edgeDifference.Calculate(19));
processor.Contract(5);
Assert.AreEqual(1, edgeDifference.Calculate(2)); // witness paths from 11<->5.
Assert.AreEqual(-2, edgeDifference.Calculate(6));
Assert.AreEqual(0, edgeDifference.Calculate(7));
Assert.AreEqual(3, edgeDifference.Calculate(8));
Assert.AreEqual(0, edgeDifference.Calculate(9));
Assert.AreEqual(3, edgeDifference.Calculate(10));
Assert.AreEqual(3, edgeDifference.Calculate(11));
Assert.AreEqual(0, edgeDifference.Calculate(12));
Assert.AreEqual(0, edgeDifference.Calculate(13));
Assert.AreEqual(0, edgeDifference.Calculate(14));
Assert.AreEqual(0, edgeDifference.Calculate(15));
Assert.AreEqual(0, edgeDifference.Calculate(18));
Assert.AreEqual(0, edgeDifference.Calculate(19));
processor.Contract(6);
Assert.AreEqual(0, edgeDifference.Calculate(2)); // witness paths from 11<->5.
Assert.AreEqual(-1, edgeDifference.Calculate(7));
Assert.AreEqual(3, edgeDifference.Calculate(8));
Assert.AreEqual(0, edgeDifference.Calculate(9));
Assert.AreEqual(3, edgeDifference.Calculate(10));
Assert.AreEqual(3, edgeDifference.Calculate(11));
Assert.AreEqual(0, edgeDifference.Calculate(12));
Assert.AreEqual(0, edgeDifference.Calculate(13));
Assert.AreEqual(0, edgeDifference.Calculate(14));
Assert.AreEqual(0, edgeDifference.Calculate(15));
Assert.AreEqual(0, edgeDifference.Calculate(18));
Assert.AreEqual(0, edgeDifference.Calculate(19));
processor.Contract(7);
Assert.AreEqual(0, edgeDifference.Calculate(2)); // witness paths from 11<->5.
Assert.AreEqual(3, edgeDifference.Calculate(8));
Assert.AreEqual(0, edgeDifference.Calculate(9));
Assert.AreEqual(3, edgeDifference.Calculate(10));
Assert.AreEqual(0, edgeDifference.Calculate(11));
Assert.AreEqual(0, edgeDifference.Calculate(12));
Assert.AreEqual(0, edgeDifference.Calculate(13));
Assert.AreEqual(0, edgeDifference.Calculate(14));
Assert.AreEqual(0, edgeDifference.Calculate(15));
Assert.AreEqual(0, edgeDifference.Calculate(18));
Assert.AreEqual(0, edgeDifference.Calculate(19));
processor.Contract(2);
Assert.AreEqual(3, edgeDifference.Calculate(8));
Assert.AreEqual(0, edgeDifference.Calculate(9));
Assert.AreEqual(3, edgeDifference.Calculate(10));
Assert.AreEqual(-2, edgeDifference.Calculate(11)); // witness paths from 18<->10.
Assert.AreEqual(0, edgeDifference.Calculate(12));
Assert.AreEqual(0, edgeDifference.Calculate(13));
Assert.AreEqual(0, edgeDifference.Calculate(14));
Assert.AreEqual(0, edgeDifference.Calculate(15));
Assert.AreEqual(0, edgeDifference.Calculate(18));
Assert.AreEqual(0, edgeDifference.Calculate(19));
processor.Contract(11);
Assert.AreEqual(3, edgeDifference.Calculate(8));
Assert.AreEqual(0, edgeDifference.Calculate(9));
Assert.AreEqual(1, edgeDifference.Calculate(10));
Assert.AreEqual(0, edgeDifference.Calculate(12));
Assert.AreEqual(0, edgeDifference.Calculate(13));
Assert.AreEqual(0, edgeDifference.Calculate(14));
Assert.AreEqual(0, edgeDifference.Calculate(15));
Assert.AreEqual(-2, edgeDifference.Calculate(18)); // witness paths from 10<->8.
Assert.AreEqual(0, edgeDifference.Calculate(19));
processor.Contract(18);
Assert.AreEqual(0, edgeDifference.Calculate(8));
Assert.AreEqual(0, edgeDifference.Calculate(9));
Assert.AreEqual(0, edgeDifference.Calculate(10));
Assert.AreEqual(0, edgeDifference.Calculate(12));
Assert.AreEqual(0, edgeDifference.Calculate(13));
Assert.AreEqual(0, edgeDifference.Calculate(14));
Assert.AreEqual(0, edgeDifference.Calculate(15));
Assert.AreEqual(0, edgeDifference.Calculate(19));
processor.Contract(8);
Assert.AreEqual(0, edgeDifference.Calculate(9));
Assert.AreEqual(0, edgeDifference.Calculate(10));
Assert.AreEqual(0, edgeDifference.Calculate(12));
Assert.AreEqual(0, edgeDifference.Calculate(13));
Assert.AreEqual(0, edgeDifference.Calculate(14));
Assert.AreEqual(0, edgeDifference.Calculate(15));
Assert.AreEqual(0, edgeDifference.Calculate(19));
processor.Contract(9);
Assert.AreEqual(-2, edgeDifference.Calculate(10)); // witness paths from 19<->12.
Assert.AreEqual(0, edgeDifference.Calculate(12));
Assert.AreEqual(0, edgeDifference.Calculate(13));
Assert.AreEqual(0, edgeDifference.Calculate(14));
Assert.AreEqual(0, edgeDifference.Calculate(15));
Assert.AreEqual(-2, edgeDifference.Calculate(19)); // witness paths from 15<->10.
processor.Contract(10);
Assert.AreEqual(-2, edgeDifference.Calculate(12));
Assert.AreEqual(0, edgeDifference.Calculate(13));
Assert.AreEqual(0, edgeDifference.Calculate(14));
Assert.AreEqual(0, edgeDifference.Calculate(15));
Assert.AreEqual(-2, edgeDifference.Calculate(19)); // witness paths from 15<->10.
processor.Contract(12);
Assert.AreEqual(-1, edgeDifference.Calculate(13));
Assert.AreEqual(0, edgeDifference.Calculate(14));
Assert.AreEqual(0, edgeDifference.Calculate(15));
Assert.AreEqual(-1, edgeDifference.Calculate(19)); // witness paths from 15<->10.
processor.Contract(13);
Assert.AreEqual(-1, edgeDifference.Calculate(14));
Assert.AreEqual(0, edgeDifference.Calculate(15));
Assert.AreEqual(-1, edgeDifference.Calculate(19)); // witness paths from 15<->10.
processor.Contract(14);
Assert.AreEqual(-1, edgeDifference.Calculate(15));
Assert.AreEqual(-1, edgeDifference.Calculate(19)); // witness paths from 15<->10.
processor.Contract(15);
Assert.AreEqual(0, edgeDifference.Calculate(19));
processor.Contract(19);
}
