public void TestMeshes(SceneControl m_sceneControl)
    {
       //新建GeoModel对象,设置Position为(110, 39, 0);
        GeoModel geoModel = new GeoModel();
        geoModel.Position = new Point3D(110, 39, 0);

        //获取Meshes;
        Meshes meshes = geoModel.Meshes;

        //构造Mesh对象mesh;
        Mesh mesh = new Mesh();
        Double[] vertexes = new Double[12];
        Double[] normals = new Double[12];
        Int32[] indexes = new Int32[8];
        Double[] textureCoords = new Double[8];
        Color[] colors = new Color[] { Color.Red, Color.SkyBlue, Color.Black, Color.Blue };

        //设置顶点坐标，每三个一组，对应坐标系的X,Y,Z数值
        vertexes[0] = 0.0; vertexes[1] = 0.0; vertexes[2] = 0.0;
        vertexes[3] = 36000; vertexes[4] = -48000; vertexes[5] = 0.0;
        vertexes[6] = 100000; vertexes[7] = 0.0; vertexes[8] = 0.0;
        vertexes[9] = 64000; vertexes[10] = 0; vertexes[11] = 48000;

        //设置顶点索引，用于绘制图形时应用
        indexes[0] = 0; indexes[1] = 1; indexes[2] = 2;
        indexes[3] = 0; indexes[4] = 2; indexes[5] = 3;

        //设置顶点的法向量方向，设置法向量可以突出Mesh的阴影效果，更加逼真。
        normals[0] = 0.0; normals[1] = 0.0; normals[2] = 1.0;
        for (int i = 3; i < 7; i++)
        {
            normals[i] = normals[0]; normals[i + 1] = normals[1]; normals[i + 2] = normals[2];
        }
        normals[9] = 0.0; normals[10] = -1.0; normals[11] = 0.0;


        //设置纹理坐标，用于设置贴图的显示效果
        for (int i = 0; i < 8;i += 2 )
        {
            textureCoords[i] = 0.0 + 0.125 * i;
            textureCoords[i + 1] = textureCoords[i];
        }

        mesh.Vertices = vertexes;
        mesh.Indexes = indexes;
        mesh.Normals = normals;
        mesh.Colors = colors;
        mesh.TextureCoords = textureCoords;
        Material material = new Material();
        material.TextureFile = "C:/green.jpg";
        mesh.Material = material;
        meshes.Add(mesh);

        //新建Scene，关联m_sceneControl;
        Scene scene = m_sceneControl.Scene;

        //MeoModel.ComputeBoundingBos()一定要调用否则不显示,再调用setBoundingBox（模型的BoundingBox）;
        geoModel.ComputeBoundingBox();
        geoModel.SetBoundingBox(geoModel.BoundingBox);

        //添加GeoModel到Scene的TrackingLayer中;
        scene.TrackingLayer.Add(geoModel, "Model");
        //Meshes.ToArrary()构造meshs2;（先调用Thread.Sleep(500),让场景控件关闭后不占用meshes资源）
        Thread.Sleep(500);
        Mesh[] meshs2 = meshes.ToArray();

        //将meshs2添加到Meshes集合中;
        meshes.AddRange(meshs2);

        //移除索引为0的Mesh对象，移除从索引0处开始的1个Mesh对象;
        meshes.Remove(0);
        meshes.RemoveRange(0, 1);

        //Clear()清除Meshes中全部Mesh对象;
        meshes.Clear();
    }