/// <summary>
/// This method returns a 3D representation of this building walls
/// </summary>
/// <param name="nodesDict">List of all the nodes on the map</param>
/// <param name="map">bounds of the map</param>
/// <param name="brush">Color of these walls</param>
/// <returns>ModelUIElement3D of these walls</returns>
public ModelUIElement3D get3DWalls(Dictionary<long, OsmSharp.Osm.Node> nodesDict, Map map, ImageBrush brush)
{
// Surrounding tags of the mesh
ModelUIElement3D model = new ModelUIElement3D();
GeometryModel3D geometryModel = new GeometryModel3D();
// Mesh and his his properties
MeshGeometry3D mesh = new MeshGeometry3D();
DiffuseMaterial material = new DiffuseMaterial((System.Windows.Media.Brush)brush);
Point3DCollection positions = new Point3DCollection();
PointCollection texturePoints = new PointCollection();
Int32Collection indices = new Int32Collection();
// Add Points of surface and with add points of surface with height 0
positions = getScaledPositionsWall(nodesDict, map);
// Add indices to the collection
for (int i = 0; i < positions.Count - 2; i += 2) {
indices.Add(i);
indices.Add(i + 2);
indices.Add(i + 1);
indices.Add(i + 3);
indices.Add(i + 1);
indices.Add(i + 2);
// Get the width and height of a wall
float widthWall = (float)Math.Sqrt(Math.Pow(positions[i].X - positions[i + 2].X, 2) + Math.Pow(positions[i].Y - positions[i + 2].Y, 2));
int imageWidth = (int)(brush.ImageSource.Width * widthWall);
int imageHeight = (int)(brush.ImageSource.Height * height);
// Add texture coordinates
texturePoints.Add(new System.Windows.Point(0, imageHeight));
texturePoints.Add(new System.Windows.Point(0, 0));
texturePoints.Add(new System.Windows.Point(imageWidth, imageHeight));
texturePoints.Add(new System.Windows.Point(imageWidth, 0));
}
// Add these collections to the mesh
mesh.Positions = positions;
mesh.TriangleIndices = indices;
mesh.TextureCoordinates = texturePoints;
// Set the color of front and back of the triangle
geometryModel.Material = material;
geometryModel.BackMaterial = material;
// Add the mesh to the model
geometryModel.Geometry = mesh;
model.Model = geometryModel;
return model;
}
/// <summary>
/// This method gets sets the minimum and maximum latitude/longitude into the map object
/// It doesn't get it by the xmlSource but by a simple fileReader
/// </summary>
private void getBounds() {
foreach (string line in File.ReadLines(OSMFILE)) {
if (line.Contains("bounds")) {
string[] waarden = line.Split('"');
float minLat = float.Parse(waarden[1], System.Globalization.CultureInfo.InvariantCulture);
float minLong = float.Parse(waarden[3], System.Globalization.CultureInfo.InvariantCulture);
float maxLat = float.Parse(waarden[5], System.Globalization.CultureInfo.InvariantCulture);
float maxLong = float.Parse(waarden[7], System.Globalization.CultureInfo.InvariantCulture);
map = new Map(minLat, minLong, maxLat, maxLong);
return; // Jump out of the method
}
}
throw new ApplicationException("Invalid osm file"); // If the data isn't found an exeption is thrown
}
/// <summary>
/// Returns the scaled positions of this wall (scaled by Web Mercator Projection: http://en.wikipedia.org/wiki/Web_Mercator)
/// </summary>
/// <param name="nodesDict">List of all the nodes on the map</param>
/// <param name="map">bounds of the map</param>
/// <returns>List of scaled positions</returns>
private Point3DCollection getScaledPositionsWall(Dictionary<long, OsmSharp.Osm.Node> nodesDict, Map map) {
Point3DCollection positions = new Point3DCollection();
foreach (long node in nodes) {
float longitude = (float)nodesDict[node].Longitude;
float latitude = (float)nodesDict[node].Latitude;
// Scaled positions
int x = (int)((128 / Math.PI) * Math.Pow(2, zoom) * (longitude + Math.PI));
int y = (int)((128 / Math.PI) * Math.Pow(2, zoom) * (Math.PI - Math.Log(Math.Tan(Math.PI / 4 + latitude / 2))));
// Necessary variables to do a translation
int minX = (int)((128 / Math.PI) * Math.Pow(2, zoom) * (map.MinLong + Math.PI));
int minY = (int)((128 / Math.PI) * Math.Pow(2, zoom) * (Math.PI - Math.Log(Math.Tan(Math.PI / 4 + map.MinLat / 2))));
int maxX = (int)((128 / Math.PI) * Math.Pow(2, zoom) * (map.MaxLong + Math.PI));
int maxY = (int)((128 / Math.PI) * Math.Pow(2, zoom) * (Math.PI - Math.Log(Math.Tan(Math.PI / 4 + map.MaxLat / 2))));
// Translate these points so the center of the villaga/city becomes the point (0, 0, 0)
x = x - (minX + ((maxX - minX) / 2));
y = y - (minY + ((maxY - minY) / 2));
// Add the point on the ground and the point on the roof
positions.Add(new Point3D(x, y, 0));
positions.Add(new Point3D(x, y, height));
}
return positions;
}
/// <summary>
/// This method returns a 3D representation of this building surface (roof)
/// </summary>
/// <param name="nodesDict">List of all the nodes on the map</param>
/// <param name="map">bounds of the map</param>
/// <param name="brush">Color of this surface</param>
/// <returns>ModelUIElement3D of this surface</returns>
public override ModelUIElement3D get3DSurface(Dictionary<long, OsmSharp.Osm.Node> nodesDict, Map map, System.Windows.Media.SolidColorBrush brush) {
return base.get3DSurface(nodesDict, map, brush);
}
/// <summary>
/// Returns the scaled points of this surface (scaled by Web Mercator Projection: http://en.wikipedia.org/wiki/Web_Mercator)
/// </summary>
/// <param name="nodesDict">List of all the nodes on the map</param>
/// <param name="map">bounds of the map</param>
/// <returns>List of scaled points</returns>
protected override List<PointF> getScaledPointsSurface(Dictionary<long, OsmSharp.Osm.Node> nodesDict, Map map) {
return base.getScaledPointsSurface(nodesDict, map);
}