Mapxtreme2008 Asp.net实现小车移动（轨迹回放）

在界面上添加Timer控件，然后在UpdatePanel1的Trigger中添加Timer的Tick（实现定时局部刷新地图）；设定间隔时间，在事件中添加如下代码：

protected void Timer1_Tick(object sender, EventArgs e)
{ /*下面代码可实现点的动态移动，在原来点的基础上经度每次偏移0.5
Catalog cat = MapInfo.Engine.Session.Current.Catalog;

MapInfo.Data.Table tbl = MapInfo.Engine.Session.Current.Catalog.GetTable("Animation");
if (tbl != null)
{
//更新点的位置
tbl.BeginAccess(MapInfo.Data.TableAccessMode.Write);
foreach (Feature fcar in tbl)
{
fcar.Geometry.GetGeometryEditor().OffsetByXY(0.5, 0, MapInfo.Geometry.DistanceUnit.Degree, MapInfo.Geometry.DistanceType.Spherical);
fcar.Geometry.EditingComplete();
fcar.Update();
}
tbl.EndAccess();
*/

//将图元移动到指定位置，即实现轨迹回放

//首先在界面设计时，在ListBox1与ListBox2中添加8个点的坐标，在定时器中实现动态移动到这八个点的位置
Catalog cat = MapInfo.Engine.Session.Current.Catalog;

MapInfo.Data.Table tbl = MapInfo.Engine.Session.Current.Catalog.GetTable("Animation");
if (tbl != null)
{
int i = int.Parse(Label3.Text);
double dbLon = double.Parse(ListBox1.Items[i].Text);
double dbLat = double.Parse(ListBox2.Items[i].Text);
double dbLonOff, dbLatOff;
DPoint dpt = new DPoint(dbLon,dbLat);

if (i == 0)
{
dbLonOff = dbLon - 118.2377;
dbLatOff = dbLat - 36.785;
}
else
{
dbLonOff = dbLon - double.Parse(ListBox1.Items[i-1].Text);
dbLatOff = dbLat - double.Parse(ListBox2.Items[i-1].Text);
} //更新点的位置
tbl.BeginAccess(MapInfo.Data.TableAccessMode.Write);
Feature fcar = MapInfo.Engine.Session.Current.Catalog.SearchForFeature(tbl, MapInfo.Data.SearchInfoFactory.SearchWhere("Name='aaaa'"));
//fcar.Geometry.GetGeometryEditor().OffsetByXY(0.5, 0, MapInfo.Geometry.DistanceUnit.Degree, MapInfo.Geometry.DistanceType.Spherical);
fcar.Geometry.GetGeometryEditor().OffsetByXY(dbLonOff, dbLatOff, MapInfo.Geometry.DistanceUnit.Degree, MapInfo.Geometry.DistanceType.Spherical);
fcar.Geometry.EditingComplete();
fcar.Update();
tbl.EndAccess();
i++;
Label3.Text = i.ToString();
if (i >= 8)
{
Timer1.Enabled = false;
}
}