二三维立体空间联动之MapControl与SceneControl的联动

二三维联动之MapControl与SceneControl的联动

针对ArcEngine项目需要，开始由JAVA转向C#开发，最近狂乱的google加baidu，再加上esrichina做升级，搜索出来的内容全部无法进入他的论坛查看，还好有baidu快照，帮了我很大的忙，再说esrichina论坛，提问比回答的人多。就一个二三维联动，不知道有多少贴子，VB的，C++的，C#的很少。没有一个好的贴子能直接解决我的问题，郁闷之极，最主要是那个论坛分权限，刚注册的用户想看牛人的博客还进不去，我是ArcEngine+C#的新手，我的项目很急，但是面对这样的论坛我很悲剧。决定将我花按天去google和baidu所找出的答案在这里记下来，同时也供和我一样的新手学习学习。

多的话说了没用，看代码如下:

1.导入shp文件到MapControl，按个button 同步到SceneControl中

        //加载shp文件到MapControl中
        private void btnItem9_1_SHP_Click(object sender, EventArgs e)
        {
            OpenFileDialog openFileDialog1 = new OpenFileDialog();
            openFileDialog1.CheckFileExists = true;
            openFileDialog1.CheckFileExists = true;
            openFileDialog1.Multiselect = true;
            openFileDialog1.Filter = "shape files(*.shp)|*.shp";
            openFileDialog1.Title = "请选择shp格式文件";

            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
                foreach (string fname in openFileDialog1.FileNames)
                {
                    if (fname != null)
                    {
                        string pathToWorkspace = System.IO.Path.GetDirectoryName(fname);
                        string shapefileName = System.IO.Path.GetFileNameWithoutExtension(fname);

                        axMapControl1.AddShapeFile(pathToWorkspace, shapefileName);
                    }
                }
            }

            IActiveView pActiveView = (IActiveView)axMapControl1.Map;
            pActiveView.Refresh();
        }

OK，接下来是同步的方法:

       //重新同步MapControl中的所有图层到SceneControl
        private void synLayersToSceneControl()
        {
            if (axMapControl1.ActiveView != null)
            {
                if (axMapControl1.Map.LayerCount > 0)
                {
                    axSceneControl1.Scene.ClearLayers();
                    UID uid = new UIDClass();
                    uid.Value = "{6CA416B1-E160-11D2-9F4E-00C04F6BC78E}";   //所有图层
                    axSceneControl1.Scene.AddLayers(axMapControl1.Map.get_Layers(uid, true), true);
                }
            }
            axSceneControl1.SceneGraph.RefreshViewers();

        }

2.点击一个button，让二维和三维一起放大，即同步放大

        //同步放大
        private void btnItem9_5_ZoomInFixed_Click(object sender, EventArgs e)
        {
            //得到接口
            IActiveView pActiveView = this.axMapControl1.Map as IActiveView;

            //获得显示范围
            IEnvelope pEnvelope = (IEnvelope)pActiveView.Extent;

            //刷新
            pEnvelope.Expand(0.9, 0.9, true);
            pActiveView.Extent = pEnvelope;
            pActiveView.Refresh();

            //三维
            //获得现场的相机
            ICamera pCamera = this.axSceneControl1.Camera as ICamera;

            //拓宽视野
            double dAngle;
            dAngle = pCamera.ViewFieldAngle;
            pCamera.ViewFieldAngle = dAngle * 0.9;

            //重绘现场
            ISceneViewer pSceneViewer = this.axSceneControl1.SceneGraph.ActiveViewer as ISceneViewer;
            pSceneViewer.Redraw(false);
        }

今天搞定基本的同步，继续研究去....

二三维立体空间联动之MapControl与SceneControl的联动

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