private void AddDataSource(IDataSource2D <double> field, Guid guid)
{
List <PolylineGeometry> geometry = new List <PolylineGeometry>();
List <VisualPushpin> labels = new List <VisualPushpin>();
isolineBuilder.DataSource = field;
IsolineCollection collection = isolineBuilder.Build();
annotater.WayBeforeText = 20.0;
foreach (LevelLine segment in collection.Lines)
{
List <Coordinate2D> points = new List <Coordinate2D>();
points.Add(new Coordinate2D(segment.StartPoint.X, segment.StartPoint.Y));
foreach (Point point in segment.OtherPoints)
{
points.Add(new Coordinate2D(point.X, point.Y));
}
PolyInfo style = PolyInfo.DefaultPolyline;
Color color = palette.GetColor(segment.Value01);
style.LineColor = System.Drawing.Color.FromArgb(color.A, color.R, color.G, color.B);
geometry.Add(new PolylineGeometry(guid.ToString(), Guid.NewGuid().ToString(), new Polyline2(Wgs84CoordinateReferenceSystem.Instance,
Coordinate2DCollection.CreateUnsafe(points.ToArray())), style));
}
foreach (IsolineTextLabel label in annotater.Annotate(collection, new Rect()))
{
labels.Add(new VisualPushpin(30, 30, label.Text, LatLonAlt.CreateUsingDegrees(label.Position.Y, label.Position.X, 0), this, Guid.NewGuid().ToString()));
}
layers.Add(new IsolinesLayer()
{
Geometry = geometry, IsVisible = true, Guid = guid, Labels = labels
});
AddLayerToHost(layers[layers.Count - 1]);
}
private void UpdateUIRepresentation()
{
foreach (var path in addedPaths)
{
content.Children.Remove(path);
}
addedPaths.Clear();
if (DataSource == null)
{
labelGrid.Visibility = Visibility.Hidden;
return;
}
Rect output = Plotter2D.Viewport.Output;
Point mousePos = Mouse.GetPosition(this);
if (!output.Contains(mousePos))
{
return;
}
var transform = Plotter2D.Viewport.Transform;
Point visiblePoint = mousePos.ScreenToData(transform);
Rect visible = Plotter2D.Viewport.Visible;
double isolineLevel;
if (Search(visiblePoint, out isolineLevel))
{
var collection = IsolineBuilder.Build(isolineLevel);
string format = "G3";
if (Math.Abs(isolineLevel) < 1000)
{
format = "F";
}
textBlock.Text = isolineLevel.ToString(format);
double x = mousePos.X + labelShift.X;
if (x + labelGrid.ActualWidth > output.Right)
{
x = mousePos.X - labelShift.X - labelGrid.ActualWidth;
}
double y = mousePos.Y - labelShift.Y - labelGrid.ActualHeight;
if (y < output.Top)
{
y = mousePos.Y + labelShift.Y;
}
Canvas.SetLeft(labelGrid, x);
Canvas.SetTop(labelGrid, y);
foreach (LevelLine segment in collection.Lines)
{
StreamGeometry streamGeom = new StreamGeometry();
using (StreamGeometryContext context = streamGeom.Open())
{
Point startPoint = segment.StartPoint.DataToScreen(transform);
var otherPoints = segment.OtherPoints.DataToScreen(transform);
context.BeginFigure(startPoint, false, false);
context.PolyLineTo(otherPoints, true, true);
}
Path path = new Path
{
Stroke = new SolidColorBrush(Palette.GetColor(segment.Value01)),
Data = streamGeom,
Style = pathStyle
};
content.Children.Add(path);
addedPaths.Add(path);
labelGrid.Visibility = Visibility.Visible;
Binding pathBinding = new Binding {
Path = new PropertyPath("StrokeThickness"), Source = this
};
path.SetBinding(Path.StrokeThicknessProperty, pathBinding);
}
}
else
{
labelGrid.Visibility = Visibility.Hidden;
}
}
