private FrameworkElement GetLayerNodeHeader(MapLayer layer)
{
StackPanel sp = new StackPanel {
Orientation = Orientation.Horizontal
};
CheckBox cb = new CheckBox {
Content = layer.LayerData.Name
};
cb.IsChecked = layer.Visibility == System.Windows.Visibility.Visible;
cb.Checked += (sender, e) => LayerVisible(layer, true);
cb.Unchecked += (sender, e) => LayerVisible(layer, false);
Slider slider = new Slider {
Minimum = 0, Maximum = 1, Width = 40, Margin = new Thickness(10, 0, 0, 0)
};
slider.SetBinding(Slider.ValueProperty, new System.Windows.Data.Binding("Opacity")
{
Source = layer, Mode = System.Windows.Data.BindingMode.TwoWay
});
sp.Children.Add(cb);
sp.Children.Add(slider);
return(sp);
}
public virtual void SetData(VectorLayer layer)
{
LayerData = layer;
LayerStyle = GetLayerStyle(layer);
LayerLableStyle = GetLabelStyle(layer);
Features.Clear();
Overlays.Clear();
Children.Clear();
LabelLayer = new MapLayer();
if (layer.GeoType == "1")
{
foreach (Feature feature in layer.Features)
{
Geometry.Point2D pos = new Geometry.Point2D(feature.GeoData);
AddSpot(new Point(pos.x, pos.y), feature);
AddLable(new Point(pos.x, pos.y), LayerLableStyle.GetLable(feature));
}
}
else if (layer.GeoType == "2")
{
if (IsRoad())
{
foreach (Feature feature in layer.Features)
{
Geometry.Polyline polyline = new Geometry.Polyline(feature.GeoData);
AddRoadStroke(polyline.Points.Select(p => new Point(p.x, p.y)).ToArray(), feature);
}
}
foreach (Feature feature in layer.Features)
{
Geometry.Polyline poly = new Geometry.Polyline(feature.GeoData);
if (!IsRoad())
{
AddPolyline(poly.Points.Select(p => new Point(p.x, p.y)).ToArray(), feature);
}
else
{
AddRoadFill(poly.Points.Select(p => new Point(p.x, p.y)).ToArray(), feature);
}
}
foreach (Feature feature in layer.Features) // mod 20130516 最后统一加标签
{
Geometry.Polyline poly = new Geometry.Polyline(feature.GeoData);
string text = LayerLableStyle.GetLable(feature);
double linearRepeatInterval = LayerLableStyle.LinearRepeatInterval;
double length = poly.Length;
//double scale = 4; // 这个时候出现主窗口的Scale是不合适的。
List <double> positions = new List <double>(); // mod 20130528 与SVG同步
if (length > 0 && length < 2 * linearRepeatInterval)
{
positions.Add(length / 2);
}
else
{
int index = 1;
while (index * linearRepeatInterval < length)
{
positions.Add(index * linearRepeatInterval);
index++;
}
}
foreach (double position in positions)
{
Geometry.Point2D tempPt = poly.GetPointAtDist(position);
double tanVal = poly.GetFirstDerivative(position);
double rotation = Math.Atan(tanVal);
double angle = 180 / Math.PI * rotation;
AddLable(new Point(tempPt.x, tempPt.y), text, angle);
}
}
}
else if (layer.GeoType == "4")
{
foreach (Feature feature in layer.Features)
{
Geometry.Polygon poly = new Geometry.Polygon(feature.GeoData);
Geometry.Point2D center = poly.Centroid;
AddPolygon(poly.Points.Select(p => new Point(p.x, p.y)).ToArray(), feature);
AddLable(new Point(center.x, center.y), LayerLableStyle.GetLable(feature));
}
}
}
