倾斜摄影三维电子沙盘 开发教程 第八课 利用WPF建立3d gis数字地球（非axhost方式）

倾斜摄影三维电子沙盘 勤务指挥开发教程 第八课 利用WPF建立3d gis数字地球（非axhost方式）

这次我们完成的功能为拖动一个外部的UI对象到球球上：

  private void Button_PreviewMouseMove(object sender, MouseEventArgs e)
        {
            if(e.LeftButton== MouseButtonState.Pressed)
            DragDrop.DoDragDrop((Button)sender, sender, DragDropEffects.Move);
        }

  private void Gis3d_PreviewDrop(object sender, DragEventArgs e)
        {
            if (e.Data.GetData(typeof(Button)) != null)
            {
                MTGIS3D Pareant = ((MTGIS3D)IniRead.IniReadWrite.MPareant);
                GisLib.GIS2D.UserCanvas y1 = new GisLib.GIS2D.UserCanvas();

                Point3D va = ((MTGIS3D)IniRead.IniReadWrite.MPareant).GetJWForMouse(e.GetPosition(Pareant));

                Button Data = (Button)e.Data.GetData(typeof(Button));


                Button Y1 = new Button();
                Y1.Content=Data.Content;
                Y1.Width = Data.Width;
                Y1.Height = Data.Height;



                NewGisBiao.M3D.UserGisUI3dObject2 JuLiSechBiao = new NewGisBiao.M3D.UserGisUI3dObject2(); //新建一个承载UI对象的东东
                JuLiSechBiao.PareantEarth = (NewGisBiao.Base.GISInterfaseForBiao)IniRead.IniReadWrite.MPareant;//设置它的GIS球对象
                JuLiSechBiao.Manage = IniRead.IniReadWrite.BiaoManage;//设置它的标号管理器

                JuLiSechBiao.MaxZoom = 9;//最大显示层，当小于9层的时候不显示

                JuLiSechBiao.MUIValue = Y1;//UI对象

                JuLiSechBiao.DHi = 0.01;//相对于地形的高度
                JuLiSechBiao.ZScal = 0.6;//相对缩放
                JuLiSechBiao.Scal.ScaleX = 1; //固定东东
                JuLiSechBiao.Scal.ScaleY = 1;
                JuLiSechBiao.Scal.ScaleZ = 1;

                JuLiSechBiao.AutoScal = true;//是否自动缩放，不管在哪一层都是一样大
                JuLiSechBiao.AutoAngle = true;//是否自动角度，使终对着摄像机
                JuLiSechBiao.CenterType = JunBiao.CenteType.左下角;//中心点类型
                IniRead.IniReadWrite.BiaoManage.AddJunBiao(JuLiSechBiao);//增加到军标管理对象中。也可以不加
                JuLiSechBiao.MWidth = Data.Width;//三维面片的大小
                JuLiSechBiao.MHeight = Data.Height;
                JuLiSechBiao.MRX = 90;
                if (IniRead.IniReadWrite.MPareant is MTGIS3D) //手动刷新一下自动角度。。。bug
                {
                    ((MTGIS3D)IniRead.IniReadWrite.MPareant).TextAxisAngleX.Angle += 0.001;
                    ((MTGIS3D)IniRead.IniReadWrite.MPareant).TextAxisAngleX.Angle -= 0.001;
                }


                JuLiSechBiao.Center = new Point(va.X, va.Y);//设置中心点

                JuLiSechBiao.ISShow = true;//显示

            }
        }

效果 如下：