async private void PathAnalyst_Click(object sender, RoutedEventArgs e)
{
if (points.Count == 0)
{
await MessageBox.Show("请指定服务点");
return;
}
if (string.IsNullOrEmpty(MyTextBox.Text))
{
await MessageBox.Show("请填写服务半径");
return;
}
double radius;
if (double.TryParse(MyTextBox.Text, out radius))
{
if (radius <= 0)
{
await MessageBox.Show("服务半径必须大于0");
return;
}
}
else
{
await MessageBox.Show("服务半径必须为数值");
return;
}
//listweights用来添加服务半径，list记录点，点与半径一一对应
//每次新添加的点用新添加的服务半径进行分析，以前的几个点的服务半径不变
List<double> listweights = new List<double>();
List<Point2D> list = new List<Point2D>();
for(int count=i;count<points.Count;count++)
{
list.Add(points[count]);
listweights.Add(radius);
}
//记录点的个数，下次分析从此点开始进行分析，之前的点仍用原服务半径
i=points.Count;
//定义 Point2D 类型的参数
FindServiceAreasParameters<Point2D> paramPoint2D = new FindServiceAreasParameters<Point2D>
{
Centers = list,
Weights = listweights,
Parameter = new TransportationAnalystParameter
{
ResultSetting = new TransportationAnalystResultSetting
{
ReturnEdgeFeatures = true,
ReturnEdgeGeometry = true,
ReturnEdgeIDs = true,
ReturnPathGuides = true,
ReturnRoutes = true,
},
WeightFieldName = "length",
TurnWeightField = "TurnCost",
}
};
//与服务器交互
try
{
FindServiceAreasService findServiceAreaService = new FindServiceAreasService("http://support.supermap.com.cn:8090/iserver/services/components-rest/rest/networkanalyst/RoadNet@Changchun");
var result = await findServiceAreaService.ProcessAsync(paramPoint2D);
foreach (SuperMap.WinRT.REST.NetworkAnalyst.ServiceArea p in result.ServiceAreaList)
{
//将要素添加到图层
PredefinedFillStyle style = new PredefinedFillStyle();
style.Fill = new SolidColorBrush(Color.FromArgb(120, 179, 235, 246));
Feature area = new Feature();
area.Geometry = p.ServiceRegion;
area.Style = style;
featuresLayer.AddFeature(area);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void MyMap_Loaded(object sender, RoutedEventArgs e)
{
#region 使用预定义点符号
Feature featurePoint = new Feature();
GeoPoint point = new GeoPoint();
point.X = 116.2;
point.Y = 39.6;
PredefinedMarkerStyle simpleMarkerStyle = new PredefinedMarkerStyle();
simpleMarkerStyle.Color = new SolidColorBrush(Colors.Red);
simpleMarkerStyle.Size = 20;
simpleMarkerStyle.Symbol = SuperMap.WinRT.Core.PredefinedMarkerStyle.MarkerSymbol.Star;
featurePoint.Style = simpleMarkerStyle;
featurePoint.Geometry = point;
featuresLayer.Features.Add(featurePoint);
#endregion
#region 使用预定义线符号
Feature featureLine = new Feature();
Point2DCollection points = new Point2DCollection();
points.Add(new Point2D(116.2, 39.6));
points.Add(new Point2D(90, 50));
points.Add(new Point2D(50, 25));
points.Add(new Point2D(-80, 45));
points.Add(new Point2D(-100, 38));
ObservableCollection<Point2DCollection> path = new ObservableCollection<Point2DCollection>();
path.Add(points);
GeoLine geoLine = new GeoLine();
geoLine.Parts = path;
PredefinedLineStyle simpleLineStyle = new PredefinedLineStyle();
simpleLineStyle.Stroke = new SolidColorBrush(Colors.Black);
simpleLineStyle.StrokeThickness = 1;
simpleLineStyle.StrokeDashArray = new DoubleCollection { 3, 1 };
featureLine.Geometry = geoLine;
featureLine.Style = simpleLineStyle;
featuresLayer.Features.Add(featureLine);
#endregion
#region 使用预定义面符号
Feature featureRegion = new Feature();
Point2DCollection pointsRegion = new Point2DCollection();
pointsRegion.Add(new Point2D(-8, 61));
pointsRegion.Add(new Point2D(-6, 55));
pointsRegion.Add(new Point2D(-8, 50));
pointsRegion.Add(new Point2D(2, 50));
pointsRegion.Add(new Point2D(1, 61));
pointsRegion.Add(new Point2D(-8, 61));
ObservableCollection<Point2DCollection> pRegion = new ObservableCollection<Point2DCollection>();
pRegion.Add(pointsRegion);
GeoRegion geoRegion = new GeoRegion();
geoRegion.Parts = pRegion;
PredefinedFillStyle simpleFillStyle = new PredefinedFillStyle();
simpleFillStyle.StrokeThickness = 1;
simpleFillStyle.Stroke = new SolidColorBrush(Colors.Black);
simpleFillStyle.Fill = new SolidColorBrush(Colors.Yellow);
featureRegion.Geometry = geoRegion;
featureRegion.Style = simpleFillStyle;
featuresLayer.Features.Add(featureRegion);
#endregion
#region 添加文本
Feature featureText = new Feature();
GeoPoint text = new GeoPoint();
text.X = 5;
text.Y = 10;
TextStyle textStyle = new TextStyle();
textStyle.Text = "Africa";
textStyle.FontSize = 40;
textStyle.Foreground = new SolidColorBrush(Colors.Blue);
featureText.Geometry = text;
featureText.Style = textStyle;
featuresLayer.Features.Add(featureText);
#endregion
}