ArcGlobe三维开发之十九——GlobeControl与MapControl的二三维联动

实现思路：2D—>3D，将当前MapControl的可视范围设置为GlobeControl中Extent属性的值；3D--->2D，获取当前GlobeControl的target和observer的Camera的BLH以及当前的图形显示范围，并将其设置为Mapcontrol的显示范围。中心点可取observer、target或者二者的中心点均可。全部代码如下：

#region 二三维切换及联动

//3D视图
private void tabItem_3D_Click (object sender,EventArgs e)
{
axToolbarControl_Map.Visible = false;
axToolbarControl_Globe.Visible = true;
axTOCControl_Globe.Visible = true;
axTOCControl_Map.Visible = false;

statusStripXYZ.Visible = true;
statusStripXY.Visible = false;

//2D—>3D联动
IActiveView avtiveView = m_globeControl.Globe as IActiveView;
avtiveView.Extent = axMapControl1.ActiveView.ScreenDisplay.DisplayTransformation.VisibleBounds;
avtiveView.Refresh();

}
//2D视图
private void tabItem_2D_Click (object sender,EventArgs e)
{
axToolbarControl_Globe.Visible = false;
axToolbarControl_Map.Visible = true;
axTOCControl_Globe.Visible = false;
axTOCControl_Map.Visible = true;
statusStripXYZ.Visible = false;
statusStripXY.Visible = true;

Synchronization_3DTo2D();

}
//3D—>2D
private void Synchronization_3DTo2D ()
{
IScene scene = m_globeControl.Globe.GlobeDisplay.Scene;
ISceneViewer sceneViewer = m_globeControl.GlobeDisplay.ActiveViewer;
IGlobeCamera globeCamera = sceneViewer.Camera as IGlobeCamera;
IGlobeViewUtil globeViewUtil = globeCamera as IGlobeViewUtil;

IEnvelope pEnv = new EnvelopeClass();
globeViewUtil.QueryVisibleGeographicExtent(pEnv);//得到GlobeControl的Extent
if(pEnv == null)
{
return;
}

IPoint observerPoint = new PointClass();
IPoint targetPoint = new PointClass();
//获取Target和observer的坐标
GetObserverTarget(out observerPoint,out targetPoint);
IPoint point = new PointClass();
(point as IZAware).ZAware = true;
point.X = (observerPoint.X + targetPoint.X) / 2;
point.Y = (observerPoint.Y + targetPoint.Y) / 2;
point.Z = (observerPoint.Z + targetPoint.Z) / 2;

pEnv.CenterAt(point);

axMapControl1.ActiveView.ScreenDisplay.DisplayTransformation.VisibleBounds = pEnv;
axMapControl1.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography,null,null);

}
//获取target和observer的坐标
private void GetObserverTarget (out IPoint ObserverPoint,out IPoint TargetPoint)
{
IGlobeDisplay m_GlobeDisplay = m_globeControl.Globe.GlobeDisplay;
ISceneViewer pSceneViewer = m_GlobeDisplay.ActiveViewer;
ICamera pCamera = pSceneViewer.Camera;
IGlobeCamera pGlobeCamera = m_GlobeDisplay.ActiveViewer.Camera as IGlobeCamera;

ObserverPoint = null;
TargetPoint = null;

//获取observer的BLH
double obsLat,obsLon,obsAltKms;
pGlobeCamera.GetObserverLatLonAlt(out obsLat,out obsLon,out obsAltKms);

//获取target的BLH
double tgtLat,tgtLon,tgtAltKms;
pGlobeCamera.GetTargetLatLonAlt(out tgtLat,out tgtLon,out tgtAltKms);

ObserverPoint = new PointClass();
(ObserverPoint as IZAware).ZAware = true;
ObserverPoint.PutCoords(obsLon,obsLat);
ObserverPoint.Z = obsAltKms;

TargetPoint = new PointClass();
(TargetPoint as IZAware).ZAware = true;
TargetPoint.PutCoords(tgtLon,tgtLat);
TargetPoint.Z = tgtAltKms;
}
#endregion