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。

所有代码例如以下：

   #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