arcgis for silverlight 实现轨迹回放

1、创建控件用户控件：PointCar

xaml页

代码页

public partial class PointCar : UserControl
{
public PointCar()
{
InitializeComponent();
}
private Map _PMap = null;
private int count = 0;
private ESRI.ArcGIS.Client.Geometry.PointCollection PCol = null;
private Storyboard sb = new Storyboard();
DoubleAnimation dba;
DoubleAnimation dba1;
/// <summary>
/// 执行结果路线
/// </summary>
private Graphic _Route = null;
public Graphic Route
{
get { return _Route; }
set { _Route = value; }
}

public string ImageSource
{
set
{
Image1.source = new BitmapImage(new Uri(value,UriKind.Relative));
}
}
public Map BindMap
{
set { _PMap = value; }
get { return _PMap; }
}
public static readonly DependencyProperty Xproperty =
DependencyProperty.Register("X",typeof(double), typeof(PointCar),new PropertyMetadata(OnXChanged));
public double X
{
get { return (double)base.GetValue(Xproperty); }
set { base.SetValue(Xproperty,value); ResetEnvelop(); }
}
private static void OnXChanged(object sender,DependencyPropertyChangedEventArgs e)
{
(sender as PointCar).X = (double)e.NewValue;
}
public static readonly DependencyProperty Yproperty =
DependencyProperty.Register("Y",typeof(PointCar),new PropertyMetadata(OnYChanged));
public double Y
{
get { return (double)base.GetValue(Yproperty); }
set { base.SetValue(Yproperty,value); ResetEnvelop(); }
}
private static void OnYChanged(object sender,DependencyPropertyChangedEventArgs e)
{
(sender as PointCar).Y = (double)e.NewValue;
}
private ElementLayer _bindLayer = null;
public ElementLayer bindLayer
{
get { return _bindLayer; }
set { _bindLayer = value; }
}
private void ResetEnvelop()
{
PointCar ele = (PointCar)_bindLayer.Children[0];
ElementLayer.SetEnvelope(ele,new ESRI.ArcGIS.Client.Geometry.Envelope(X,Y,X,Y));
if (_PMap != null)
{
ESRI.ArcGIS.Client.Geometry.polygon gon = new ESRI.ArcGIS.Client.Geometry.polygon();
ESRI.ArcGIS.Client.Geometry.PointCollection con = new ESRI.ArcGIS.Client.Geometry.PointCollection();
}
}
/// <summary>
/// 移动时间间隔默认1
/// </summary>
///
private double _Interval = 1;
public double Interval
{
get { return _Interval; }
set { _Interval = value; }
}
public void Start()
{
if (_PMap != null)
{
_PMap.ZoomTo(_Route.Geometry);
}
if (_bindLayer.Children.Count > 0) _bindLayer.Children.RemoveAt(0);
_bindLayer.Children.Add(this);
ESRI.ArcGIS.Client.Geometry.polyline line = _Route.Geometry as ESRI.ArcGIS.Client.Geometry.polyline;
PCol = line.Paths[0];
MapPoint pt1 = PCol[0];
MapPoint pt2 = PCol[1];
double angle = CalulateXYAnagle(pt1.X,pt1.Y,pt2.X,pt2.Y);
RotateItemCanvas.Angle = angle;
ElementLayer.SetEnvelope(this,pt1.Extent);
if (dba == null)
{
dba = new DoubleAnimation();
Storyboard.SetTarget(dba,this);
Storyboard.SetTargetProperty(dba,new PropertyPath("X"));
sb.Children.Add(dba);
dba1 = new DoubleAnimation();
Storyboard.SetTarget(dba1,this);
Storyboard.SetTargetProperty(dba1,new PropertyPath("Y"));
sb.Children.Add(dba1);
}
sb.Completed += new EventHandler(sb_Completed);
dba.From = pt1.X;
dba.To = pt2.X;
dba.Duration = new Duration(TimeSpan.FromSeconds(_Interval));
dba1.From = pt1.Y;
dba1.To = pt2.Y;
dba1.Duration = new Duration(TimeSpan.FromSeconds(_Interval));
sb.Begin();
}
public static double CalulateXYAnagle(double startx,double starty,double endx,double endy)
{
double tan = Math.atan(Math.Abs((endy - starty) / (endx - startx))) * 180 / Math.PI;
if (endx > startx && endy > starty)//第一象限
{
return -tan;
}
else if (endx > startx && endy < starty)//第二象限
{
return tan;
}
else if (endx < startx && endy > starty)//第三象限
{
return tan - 180;
}
else
{
return 180 - tan;
}

}
private void sb_Completed(object sender,EventArgs e)
{
if (count < PCol.Count - 2)
{
count++;
MapPoint pt1 = PCol[count];
MapPoint pt2 = PCol[count + 1];
DoubleAnimation db = (DoubleAnimation)(sender as Storyboard).Children[0];
db.From = pt1.X;
db.To = pt2.X;
double angle = CalulateXYAnagle(pt1.X,pt2.Y);
RotateItemCanvas.Angle = angle;
DoubleAnimation db1 = (DoubleAnimation)(sender as Storyboard).Children[1];
db1.From = pt1.Y;
db1.To = pt2.Y;
sb.Begin();
}
else
{

}
}
public void Stop()
{
sb.Stop();
}
public void Pause()
{
sb.Pause();
}
public void Resume()
{
sb.Resume();
}
}

2、地图主页面创建MainPage.xaml

<esriSymbols:Linesymbol x:Name="CarSymbol" Color="Red" Width="2" />

map控件添加图层

<esri:Graphicslayer ID="RouteLayer" ></esri:Graphicslayer>//画线层
<esri:ElementLayer ID="MoveCarLayer"></esri:ElementLayer>//车辆移动层

后台代码：画线定位代码

ESRI.ArcGIS.Client.Geometry.polyline pline = new ESRI.ArcGIS.Client.Geometry.polyline();
ESRI.ArcGIS.Client.Geometry.PointCollection pcoint = new ESRI.ArcGIS.Client.Geometry.PointCollection();
List<OtherService.GpsUserInfo> gui = new List<OtherService.GpsUserInfo>();

//获取需要轨迹的点对象。
gui = DataGirdGJ.ItemsSource as List<OtherService.GpsUserInfo>;
MapPoint mp = new MapPoint();

//循环添加点
for (int i = 0; i < gui.Count; i++)
{
mp = null;
mp = new MapPoint();
mp.X = Convert.Todouble(gui[i].X);
mp.Y = Convert.Todouble(gui[i].Y);
pcoint.Add(mp);
// myMap.PanTo(mp);
//Getmapinfo.SetMapXY(mp.X,mp.Y,Getmapinfo.PointLocationNmber);
}
pline.Paths.Add(pcoint);
pGraphic.Geometry = pline;
pGraphic.Symbol = CarSymbol;
routeLayer.Graphics.Add(pGraphic);

//地图定位
if (gui.Count > 0)
{
MapPoint mp1 = new MapPoint();
mp1.X = Convert.Todouble(gui[0].X);
mp1.Y = Convert.Todouble(gui[0].Y);
myMap.PanTo(mp1);
Getmapinfo.SetMapXY(mp1.X,mp1.Y,Getmapinfo.PointLocationNmber);
}

轨迹回放代码

ElementLayer elelay = myMap.Layers["MoveCarLayer"] as ElementLayer; ESRI.ArcGIS.Client.Geometry.polyline Pline = pGraphic.Geometry as ESRI.ArcGIS.Client.Geometry.polyline; //自定义元素 UserControls.PointCar mele = new UserControls.PointCar(); mele.BindMap = myMap; mele.bindLayer = elelay; mele.Interval = 1; //时间你可以动态设置，根据线的长度除以速度 mele.Route = pGraphic; mele.Start();

arcgis for silverlight 实现轨迹回放

xaml页

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