public static VoronoiGraph ComputeVoronoiGraph(IEnumerable Datapoints)
{
BinaryPriorityQueue PQ = new BinaryPriorityQueue();
Hashtable CurrentCircles = new Hashtable();
VoronoiGraph VG = new VoronoiGraph();
VNode RootNode = null;
foreach (Vector V in Datapoints)
{
PQ.Push(new VDataEvent(V));
}
while (PQ.Count > 0)
{
VEvent VE = PQ.Pop() as VEvent;
VDataNode[] CircleCheckList;
if (VE is VDataEvent)
{
RootNode = VNode.ProcessDataEvent(VE as VDataEvent, RootNode, VG, VE.Y, out CircleCheckList);
}
else if (VE is VCircleEvent)
{
CurrentCircles.Remove(((VCircleEvent)VE).NodeN);
if (!((VCircleEvent)VE).Valid)
{
continue;
}
RootNode = VNode.ProcessCircleEvent(VE as VCircleEvent, RootNode, VG, VE.Y, out CircleCheckList);
}
else
{
throw new Exception("Got event of type " + VE.GetType().ToString() + "!");
}
foreach (VDataNode VD in CircleCheckList)
{
if (CurrentCircles.ContainsKey(VD))
{
((VCircleEvent)CurrentCircles[VD]).Valid = false;
CurrentCircles.Remove(VD);
}
VCircleEvent VCE = VNode.CircleCheckDataNode(VD, VE.Y);
if (VCE != null)
{
PQ.Push(VCE);
CurrentCircles[VD] = VCE;
}
}
if (VE is VDataEvent)
{
Vector DP = ((VDataEvent)VE).DataPoint;
foreach (VCircleEvent VCE in CurrentCircles.Values)
{
if (MathTools.Dist(DP[0], DP[1], VCE.Center[0], VCE.Center[1]) < VCE.Y - VCE.Center[1] && Math.Abs(MathTools.Dist(DP[0], DP[1], VCE.Center[0], VCE.Center[1]) - (VCE.Y - VCE.Center[1])) > 1e-10)
{
VCE.Valid = false;
}
}
}
}
return(VG);
}
/// <summary>
/// Creates a prefix tree from a given character weights hash table.
/// </summary>
///
/// <param name="symbolWeights">The character weights.</param>
public PrefixTree(long[] symbolWeights)
{
// Create the (binary) priority queue of prefix tree nodes (leaves).
BinaryPriorityQueue binaryPriorityQueue = new BinaryPriorityQueue();
// Populate the (binary) priority queue of prefix tree nodes (leaves).
for (int symbol = 0; symbol <= byte.MaxValue; symbol++)
{
if (symbolWeights[(byte)symbol] == 0)
{
continue;
}
PrefixTreeNode prefixTreeNode = new PrefixTreeNode((byte)symbol, (long)symbolWeights[(byte)symbol]);
binaryPriorityQueue.Push(prefixTreeNode);
}
// Build the prefix tree using a binary priority queue.
while (binaryPriorityQueue.Count != 1)
{
// The node with the smallest weight becomes the right child of its parent.
PrefixTreeNode rightChildNode = (PrefixTreeNode)binaryPriorityQueue.Pop();
// The node with the second smallest weight becomes the left child of its parent.
PrefixTreeNode leftChildNode = (PrefixTreeNode)binaryPriorityQueue.Pop();
// Create the parent node and enqueue it.
PrefixTreeNode parentNode = new PrefixTreeNode(leftChildNode, rightChildNode);
binaryPriorityQueue.Push(parentNode);
}
// The last remaning node becomes the root node of the prefix tree.
rootNode = (PrefixTreeNode)binaryPriorityQueue.Pop();
// Recursively assign prefixes to the nodes strating from the root node.
AssignPrefixes();
}
public static VoronoiGraph ComputeVoronoiGraph(IEnumerable Datapoints)
{
BinaryPriorityQueue PQ = new BinaryPriorityQueue();
Hashtable CurrentCircles = new Hashtable();
VoronoiGraph VG = new VoronoiGraph();
VNode RootNode = null;
foreach (Vector V in Datapoints)
{
PQ.Push(new VDataEvent(V));
}
while (PQ.Count > 0)
{
VEvent VE = PQ.Pop() as VEvent;
VDataNode[] CircleCheckList;
if (VE is VDataEvent)
{
RootNode = VNode.ProcessDataEvent(VE as VDataEvent, RootNode, VG, VE.Y, out CircleCheckList);
}
else if (VE is VCircleEvent)
{
CurrentCircles.Remove(((VCircleEvent)VE).NodeN);
if (!((VCircleEvent)VE).Valid)
{
continue;
}
RootNode = VNode.ProcessCircleEvent(VE as VCircleEvent, RootNode, VG, VE.Y, out CircleCheckList);
}
else
{
throw new Exception("Got event of type " + VE.GetType().ToString() + "!");
}
foreach (VDataNode VD in CircleCheckList)
{
if (CurrentCircles.ContainsKey(VD))
{
((VCircleEvent)CurrentCircles[VD]).Valid = false;
CurrentCircles.Remove(VD);
}
VCircleEvent VCE = VNode.CircleCheckDataNode(VD, VE.Y);
if (VCE != null)
{
PQ.Push(VCE);
CurrentCircles[VD] = VCE;
}
}
if (VE is VDataEvent)
{
Vector DP = ((VDataEvent)VE).DataPoint;
foreach (VCircleEvent VCE in CurrentCircles.Values)
{
if (MathTools.Dist(DP[0], DP[1], VCE.Center[0], VCE.Center[1]) < VCE.Y - VCE.Center[1] && Math.Abs(MathTools.Dist(DP[0], DP[1], VCE.Center[0], VCE.Center[1]) - (VCE.Y - VCE.Center[1])) > 1e-10)
{
VCE.Valid = false;
}
}
}
}
VNode.CleanUpTree(RootNode);
foreach (VoronoiEdge VE in VG.Edges)
{
if (VE.Done)
{
continue;
}
if (VE.VVertexB == Fortune.VVUnkown)
{
VE.AddVertex(Fortune.VVInfinite);
if (Math.Abs(VE.LeftData[1] - VE.RightData[1]) < 1e-10 && VE.LeftData[0] < VE.RightData[0])
{
Vector T = VE.LeftData;
VE.LeftData = VE.RightData;
VE.RightData = T;
}
}
}
ArrayList MinuteEdges = new ArrayList();
foreach (VoronoiEdge VE in VG.Edges)
{
if (!VE.IsPartlyInfinite && VE.VVertexA.Equals(VE.VVertexB))
{
MinuteEdges.Add(VE);
// prevent rounding errors from expanding to holes
foreach (VoronoiEdge VE2 in VG.Edges)
{
if (VE2.VVertexA.Equals(VE.VVertexA))
{
VE2.VVertexA = VE.VVertexA;
}
if (VE2.VVertexB.Equals(VE.VVertexA))
{
VE2.VVertexB = VE.VVertexA;
}
}
}
}
foreach (VoronoiEdge VE in MinuteEdges)
{
VG.Edges.Remove(VE);
}
return(VG);
}
public static VoronoiGraph ComputeVoronoiGraph(Dictionary<Point, VoronoiCell> cells)
{
BinaryPriorityQueue PQ = new BinaryPriorityQueue();
Hashtable CurrentCircles = new Hashtable();
VoronoiGraph VG = new VoronoiGraph();
VNode RootNode = null;
foreach(Point V in cells.Keys)
{
PQ.Push(new VDataEvent(V));
}
while(PQ.Count>0)
{
VEvent VE = PQ.Pop() as VEvent;
VDataNode[] CircleCheckList;
if(VE is VDataEvent)
{
RootNode = VNode.ProcessDataEvent(VE as VDataEvent,RootNode,VG,VE.Y,out CircleCheckList);
}
else if(VE is VCircleEvent)
{
CurrentCircles.Remove(((VCircleEvent)VE).NodeN);
if(!((VCircleEvent)VE).Valid)
continue;
RootNode = VNode.ProcessCircleEvent(VE as VCircleEvent,RootNode,VG,VE.Y,out CircleCheckList);
}
else throw new Exception("Got event of type "+VE.GetType().ToString()+"!");
foreach(VDataNode VD in CircleCheckList)
{
if(CurrentCircles.ContainsKey(VD))
{
((VCircleEvent)CurrentCircles[VD]).Valid=false;
CurrentCircles.Remove(VD);
}
VCircleEvent VCE = VNode.CircleCheckDataNode(VD,VE.Y);
if(VCE!=null)
{
PQ.Push(VCE);
CurrentCircles[VD]=VCE;
}
}
if(VE is VDataEvent)
{
Point DP = ((VDataEvent)VE).DataPoint;
foreach(VCircleEvent VCE in CurrentCircles.Values)
{
if (MathF.Dist(DP.X, DP.Y, VCE.Center.X, VCE.Center.Y) < VCE.Y - VCE.Center.Y && Math.Abs(MathF.Dist(DP.X, DP.Y, VCE.Center.X, VCE.Center.Y) - (VCE.Y - VCE.Center.Y)) > 1e-10)
VCE.Valid = false;
}
}
}
VNode.CleanUpTree(RootNode);
foreach(VoronoiEdge VE in VG.Edges)
{
if(VE.Done)
continue;
if(VE.VVertexB.IsUndefined)
{
VE.AddVertex(Fortune.VVInfinite);
if(Math.Abs(VE.LeftData.Y-VE.RightData.Y)<1e-10 && VE.LeftData.X<VE.RightData.X)
{
Point T = VE.LeftData;
VE.LeftData = VE.RightData;
VE.RightData = T;
}
}
}
ArrayList MinuteEdges = new ArrayList();
foreach (var edge in VG.Edges)
{
double ax = Math.Round(edge.VVertexA.X, Vector.Precision), ay = Math.Round(edge.VVertexA.Y, Vector.Precision),
bx = Math.Round(edge.VVertexB.X, Vector.Precision), by = Math.Round(edge.VVertexB.Y, Vector.Precision);
if (ax == bx && ay == by)
{
MinuteEdges.Add(edge);
continue;
}
edge.VVertexA = new Point(ax, ay);
edge.VVertexB = new Point(bx, by);
}
foreach(VoronoiEdge VE in MinuteEdges)
VG.Edges.Remove(VE);
foreach (var edge in VG.Edges)
{
VoronoiCell rightCell = cells[edge.RightData], leftCell = cells[edge.LeftData];
if (!rightCell.Edges.Contains(edge))
{
rightCell.Edges.Add(edge);
}
if (!leftCell.Edges.Contains(edge))
{
leftCell.Edges.Add(edge);
}
}
VG.Cells = cells;
return VG;
}
public void Enqueue(CacheItem item)
{
Queue.Push(item);
}
public static VoronoiGraph FortuneAlgo(List<Vector> points)
{
BinaryPriorityQueue PQ = new BinaryPriorityQueue();
Hashtable CurrentCircles = new Hashtable();
VoronoiGraph VG = new VoronoiGraph();
VNode RootNode = null;
for (int i = 0; i < points.Count; ++i)
PQ.Push(new VDataEvent(points[i]));
while (PQ.Count > 0)
{
VEvent VE = PQ.Pop() as VEvent;
VDataNode[] CircleCheckList;
if (VE is VDataEvent)
RootNode = ProcessDataEvent(VE as VDataEvent, RootNode, VG, VE.Y, out CircleCheckList);
else if (VE is VCircleEvent)
{
CurrentCircles.Remove(((VCircleEvent)VE).NodeN);
if (!((VCircleEvent)VE).Valid)
continue;
RootNode = ProcessCircleEvent(VE as VCircleEvent, RootNode, VG, VE.Y, out CircleCheckList);
}
else throw new Exception("Got event of type " + VE.GetType().ToString() + "!");
foreach (VDataNode VD in CircleCheckList)
{
if (CurrentCircles.ContainsKey(VD))
{
((VCircleEvent)CurrentCircles[VD]).Valid = false;
CurrentCircles.Remove(VD);
}
VCircleEvent VCE = CircleCheckDataNode(VD, VE.Y);
if (VCE != null)
{
PQ.Push(VCE);
CurrentCircles[VD] = VCE;
}
}
if (VE is VDataEvent)
{
Vector DP = ((VDataEvent)VE).DataPoint;
foreach (VCircleEvent VCE in CurrentCircles.Values)
{
if (MathTools.Dist(DP[0], DP[1], VCE.Center[0], VCE.Center[1]) < VCE.Y - VCE.Center[1] && Math.Abs(MathTools.Dist(DP[0], DP[1], VCE.Center[0], VCE.Center[1]) - (VCE.Y - VCE.Center[1])) > 1e-10)
VCE.Valid = false;
}
}
}
VNode.CleanUpTree(RootNode);
foreach (VoronoiEdge VE in VG.Edges)
{
if (VE.Done)
continue;
if (VE.VVertexB == Fortune.VVUnkown)
{
VE.AddVertex(Fortune.VVInfinite);
if (Math.Abs(VE.LeftData[1] - VE.RightData[1]) < 1e-10 && VE.LeftData[0] < VE.RightData[0])
{
Vector T = VE.LeftData;
VE.LeftData = VE.RightData;
VE.RightData = T;
}
}
}
ArrayList MinuteEdges = new ArrayList();
foreach (VoronoiEdge VE in VG.Edges)
{
if (!VE.IsPartlyInfinite && VE.VVertexA.Equals(VE.VVertexB))
{
MinuteEdges.Add(VE);
foreach (VoronoiEdge VE2 in VG.Edges)
{
if (VE2.VVertexA.Equals(VE.VVertexA))
VE2.VVertexA = VE.VVertexA;
if (VE2.VVertexB.Equals(VE.VVertexA))
VE2.VVertexB = VE.VVertexA;
}
}
}
foreach (VoronoiEdge VE in MinuteEdges)
VG.Edges.Remove(VE);
return VG;
}
private void resolvePath(AStarComponent aStarComponent, AStarNode currentNode_in, AStarNode goalNode_in, AStarGraph graph_in)
{
BinaryPriorityQueue<AStarNode> openset =
new BinaryPriorityQueue<AStarNode>(AStarNode.sortFScoreAscending());
AStarNode currentNode = currentNode_in;
AStarNode goalNode = goalNode_in;
AStarGraph graph = graph_in;
if (currentNode != null)
{
aStarComponent.ClearPath();
for (int i = 0; i < graph.Nodes.Count; i++)
{
graph.Nodes[i].Initialize();
}
openset.Push(currentNode);
currentNode.FScore = this.getFScore(currentNode, goalNode);
while (openset.Count > 0)
{
AStarNode current;
current = openset.Pop();
List<AStarNode> neighbors = current.GetNeighbors();
if (current.GetPosition() == goalNode.GetPosition())
{
AStarNode node = current;
while (node.GetOptimalPathParent() != null)
{
aStarComponent.Path.Push(node);
node = node.GetOptimalPathParent();
}
//aStarComponent.Path.Push(node);
break;
}
current.Processed = true;
for (int i = 0; i < neighbors.Count; i++)
{
AStarNode neighbor = neighbors[i];
if (!neighbor.Processed)
{
float tentative_g_score =
current.GScore + (current.GetPosition() - neighbor.GetPosition()).Length();
if (!neighbor.Visited || tentative_g_score <= neighbor.GScore)
{
neighbor.SetOptimalPathParent(current);
neighbor.GScore = tentative_g_score;
neighbor.FScore = neighbor.GScore + this.getFScore(neighbor, goalNode);
if (!neighbor.Visited)
{
neighbor.Visited = true;
}
openset.Push(neighbor);
}
}
}
}
}
}
public static VoronoiGraph ComputeVoronoiGraph(IEnumerable Datapoints)
{
BinaryPriorityQueue PQ = new BinaryPriorityQueue();
Hashtable CurrentCircles = new Hashtable();
VoronoiGraph VG = new VoronoiGraph();
VNode RootNode = null;
foreach (Vector V in Datapoints)
{
PQ.Push(new VDataEvent(V));
}
while (PQ.Count > 0)
{
VEvent VE = PQ.Pop() as VEvent;
VDataNode[] CircleCheckList;
if (VE is VDataEvent)
{
RootNode = VNode.ProcessDataEvent(VE as VDataEvent, RootNode, VG, VE.Y, out CircleCheckList);
}
else if (VE is VCircleEvent)
{
CurrentCircles.Remove(((VCircleEvent)VE).NodeN);
if (!((VCircleEvent)VE).Valid)
{
continue;
}
RootNode = VNode.ProcessCircleEvent(VE as VCircleEvent, RootNode, VG, VE.Y, out CircleCheckList);
}
else
{
throw new Exception("Got event of type " + VE.GetType().ToString() + "!");
}
foreach (VDataNode VD in CircleCheckList)
{
if (CurrentCircles.ContainsKey(VD))
{
((VCircleEvent)CurrentCircles[VD]).Valid = false;
CurrentCircles.Remove(VD);
}
VCircleEvent VCE = VNode.CircleCheckDataNode(VD, VE.Y);
if (VCE != null)
{
PQ.Push(VCE);
CurrentCircles[VD] = VCE;
}
}
if (VE is VDataEvent)
{
Vector DP = ((VDataEvent)VE).DataPoint;
foreach (VCircleEvent VCE in CurrentCircles.Values)
{
if (MathTools.Dist(DP[0], DP[1], VCE.Center[0], VCE.Center[1]) < VCE.Y - VCE.Center[1] && Math.Abs(MathTools.Dist(DP[0], DP[1], VCE.Center[0], VCE.Center[1]) - (VCE.Y - VCE.Center[1])) > 1e-10)
{
VCE.Valid = false;
}
}
}
}
VG.Regions = new Dictionary <Vector, VoronoiRegion>();
foreach (VoronoiEdge e in VG.Edges)
{
if (e.VVertexA == VVUnkown || e.VVertexB == VVUnkown)
{
continue;
}
for (int i = 0; i < 2; ++i)
{
VoronoiRegion r;
Vector key = i == 0 ? e.LeftData : e.RightData;
bool exist = VG.Regions.TryGetValue(key, out r);
if (exist)
{
}
else
{
r = new VoronoiRegion();
}
if (r.Coners.IndexOf(e.VVertexA) == -1)
{
r.Coners.Add(e.VVertexA);
}
if (r.Coners.IndexOf(e.VVertexB) == -1)
{
r.Coners.Add(e.VVertexB);
}
r.Edges.Add(e);
if (exist)
{
}
else
{
VG.Regions.Add(key, r);
}
}
}
return(VG);
}