UIElement DrawConnection(PopulationCentreConnection connection, bool highway)
{
var line = new Line();
line.X1 = connection.Position1.x;
line.Y1 = connection.Position1.y;
line.X2 = connection.Position2.x;
line.Y2 = connection.Position2.y;
float thickness;
Brush brush;
if (highway)
{
thickness = 2;
brush = new SolidColorBrush(Color.FromRgb(255, 0, 255));
}
else
{
thickness = 1;
brush = new SolidColorBrush(Color.FromRgb(128, 128, 128));
}
line.Stroke = brush;
line.StrokeThickness = thickness;
return(line);
}
private static IEnumerable <PopulationCentreConnection> getPopCenterConnections(List <PopulationCentre> popCentres)
{
SortedList <float, PopulationCentreConnection> links = new SortedList <float, PopulationCentreConnection>((popCentres.Count * (popCentres.Count - 1)) / 2);
for (int i = 0; i < popCentres.Count - 1; i++)
{
for (int j = i + 1; j < popCentres.Count; j++)
{
var connection = new PopulationCentreConnection(popCentres[i], popCentres[j]);
try
{
links.Add(connection.weight, connection);
}
catch (ArgumentException a) { }
}
}
return(links.Values.Reverse());
}
List <PopulationCentreConnection> getNearestNeighbourConnections(List <PopulationCentre> pops, RoadType roadType, List <PopulationCentreConnection> connections = null)
{
var geometry = new TriangleNet.Geometry.Polygon();
//Dictionary<Vertex, PopulationCentre> popDictionary = new Dictionary<Vertex, PopulationCentre>();
var connectionList = new List <PopulationCentreConnection>();
foreach (var pop in pops)
{
var vertex = new Vertex(pop.Position.x, pop.Position.y);
//popDictionary.Add(vertex, pop);
geometry.Add(vertex);
}
var mesh = geometry.Triangulate();
int org, dest;
ITriangle neighbor;
int nid;
foreach (var tri in mesh.Triangles)
{
for (int i = 0; i < 3; i++)
{
// The neighbor opposite of vertex i.
GetNeighbor(tri, i, out neighbor, out nid);
// Consider each edge only once.
if ((tri.ID < nid) || (nid < 0))
{
// Get the edge endpoints.
org = tri.GetVertexID((i + 1) % 3);
dest = tri.GetVertexID((i + 2) % 3);
var pop1 = pops[org];
var pop2 = pops[dest];
var connection = new PopulationCentreConnection(pop1, pop2);
connection.roadType = roadType;
if (connections == null || !connections.Any(x => x.Equal(connection)))
{
connectionList.Add(connection);
}
}
}
}
return(connectionList);
}
