/// <summary>
/// Executes the actual algorithm.
/// </summary>
protected override void DoRun()
{
var tiles = new Dictionary <TileIndex, RoutingTile>();
_edgeVisitor.Visit += (id, startVertex, startWeight, endVertex, endWeight, shape) =>
{
var endCoordinate = shape[shape.Count - 1];
var index = TileIndex.WorldToTileIndex(endCoordinate.Latitude, endCoordinate.Longitude, _level);
RoutingTile tile;
if (!tiles.TryGetValue(index, out tile))
{
tile = new RoutingTile
{
Weight = endWeight,
Count = 1,
Index = index
};
}
else
{
tile.Weight = (tile.Weight * tile.Count + endWeight) / tile.Count + 1;
tile.Count++;
}
tiles[index] = tile;
};
_edgeVisitor.Run();
_result = new HeatmapResult();
_result.Data = new HeatmapSample[tiles.Count];
var max = 0f;
var i = 0;
foreach (var pair in tiles)
{
var location = TileIndex.TileIndexToWorld(pair.Key.X, pair.Key.Y, _level);
_result.Data[i] = new HeatmapSample()
{
Latitude = location.Latitude,
Longitude = location.Longitude,
Value = pair.Value.Weight
};
if (max < pair.Value.Weight)
{
max = pair.Value.Weight;
}
i++;
}
_result.Max = max;
this.HasSucceeded = true;
}
/// <summary>
/// Executes the actual algorithm.
/// </summary>
protected override void DoRun(CancellationToken cancellationToken)
{
var tiles = new Dictionary <TileIndex, RoutingTile>();
_edgeVisitor.Visit += (path) =>
{
var e = path.Edge;
var endWeight = path.Weight;
if (e == Constants.NO_EDGE)
{
return(false);
}
// Calculate weight at start vertex.
uint edgeId;
if (e > 0)
{
edgeId = (uint)e - 1;
}
else
{
edgeId = (uint)((-e) - 1);
}
var edge = _graph.GetEdge(edgeId);
var shape = _graph.GetShape(edge);
var endCoordinate = shape[shape.Count - 1];
var index = TileIndex.WorldToTileIndex(endCoordinate.Latitude, endCoordinate.Longitude, _level);
RoutingTile tile;
if (!tiles.TryGetValue(index, out tile))
{
tile = new RoutingTile
{
Weight = endWeight,
Count = 1,
Index = index
};
}
else
{
tile.Weight = (tile.Weight * tile.Count + endWeight) / tile.Count + 1;
tile.Count++;
}
tiles[index] = tile;
return(false);
};
_edgeVisitor.Run(cancellationToken);
_result = new HeatmapResult();
_result.Data = new HeatmapSample[tiles.Count];
var max = 0f;
var i = 0;
foreach (var pair in tiles)
{
var location = TileIndex.TileIndexToWorld(pair.Key.X, pair.Key.Y, _level);
_result.Data[i] = new HeatmapSample()
{
Latitude = location.Latitude,
Longitude = location.Longitude,
Value = pair.Value.Weight
};
if (max < pair.Value.Weight)
{
max = pair.Value.Weight;
}
i++;
}
_result.Max = max;
this.HasSucceeded = true;
}