/// <summary>
/// Updates the vertex internal information.
/// Maintains consistency between the vertex's position on the
/// screen and ins internal information.
/// </summary>
/// <param name="vertex"></param>
/// <param name="graphLayout"></param>
public void UpdateVertexInfo(ref VertexCity vertex, ref GraphLayoutCity graphLayout)
{
if (vertex != null)
{
// Get the vertex control
VertexControl vertexControl = graphLayout.GetVertexControl(vertex);
// If we could find the verex control
if (vertexControl != null)
{
double tempXCoord, tempYCoord;
// Get the vertex screen coordinates
tempXCoord = GraphCanvas.GetX(vertexControl);
tempYCoord = GraphCanvas.GetY(vertexControl);
// Update the internal information if the coordinates
// are in range from 0 to 800
if ((tempXCoord > 0) && (tempXCoord < 800) &&
(tempYCoord > 0) && (tempYCoord < 800))
{
vertex.CityCoordinates.setX((int)tempXCoord);
vertex.CityCoordinates.setY((int)tempYCoord);
}
// Set the new screen coordinates
GraphCanvas.SetX(vertexControl, vertex.CityCoordinates.getX());
GraphCanvas.SetY(vertexControl, vertex.CityCoordinates.getY());
}
}
}
/// <summary>
/// Set the nodes coordinates to the coordinates from the
/// locations file.
/// </summary>
/// <param name="graphLayout">
/// Graph layout
/// </param>
/// <param name="citiesLocations">
/// Locations file that has the desired coordinates for the graph's vertices
/// </param>
public void EstablishCoordinates(ref GraphLayoutCity graphLayout,
CitiesLocations citiesLocations)
{
VertexControl vertexControl = new VertexControl();
Coordinates tempVertexCoordinates;
if (citiesLocations != null)
{
foreach (VertexCity vertex in graphLayout.Graph.Vertices)
{
// Get the coordinates from the locations file
citiesLocations.locations.TryGetValue(vertex.City, out tempVertexCoordinates);
// Update the vertex data
vertex.CityCoordinates.setX(tempVertexCoordinates.getX());
vertex.CityCoordinates.setY(tempVertexCoordinates.getY());
// Update the vertex position on the screen
vertexControl = graphLayout.GetVertexControl(vertex);
GraphCanvas.SetX(vertexControl, vertex.CityCoordinates.getX());
GraphCanvas.SetY(vertexControl, vertex.CityCoordinates.getY());
}
}
}