Question

二、三维标绘图片使用GeoPicture、GeoPicture3D中根据指定的参数来构造一个 GeoPicture、GeoPicture3D 的新对象中的 string imageFile 分别需要什么格式的?

Answer 1

你好，一般的图片格式都是支持的，比如PNG,JPG等格式

Comments

你看我这样写有什么问题不，添加图片了没效果。

private void m_sceneControl_MouseClick(object sender, MouseEventArgs e)
        {
            try
            {
                if (e.Button == MouseButtons.Left )
                {
                    //画点
                    if (m_WorkMode == WorkMode.Plot)
                    {  
                        if(m_PlotType == PlotType.Text)
                        {
                            FormTextInput frmText = FormTextInput.Instance;
                            if (frmText == null || frmText.IsDisposed) return;

                            if (m_cadLayer.IsEditable)
                            {
                                frmText.Load += (_sender, _e) =>
                                {
                                    frmText.Location = new System.Drawing.Point(System.Windows.Forms.Cursor.Position.X, System.Windows.Forms.Cursor.Position.Y);
                                    frmText.BtnOkClickEvent += (text) =>
                                    {
                                        if (string.IsNullOrEmpty(text))
                                        {
                                            XtraMessageBox.Show("字符不能为空！", "提示");
                                            return;
                                        }
                                        DatasetVector cadDataset = m_workspace.Datasources[0].Datasets["cad"] as DatasetVector;
                                        Recordset recordset = cadDataset.GetRecordset(false, CursorType.Dynamic);
                                        recordset.MoveLast();

                                        Point3D pt3d = new Point3D();
                                        pt3d = m_sceneControl.Scene.PixelToGlobe(e.Location, PixelToGlobeMode.TerrainAndModel);
                                        GeoText3D geoText = new GeoText3D(new TextPart3D(text, pt3d));
                                        SetResultTextStyle(geoText);
                                        frmText.Close();
                                        recordset.AddNew(geoText);
                                        recordset.Update();
                                        recordset.Dispose();

                                        m_cadLayer.IsSelectable = false;
                                        m_cadLayer.UpdateData();
                                        m_sceneControl.Scene.Refresh();
                                    };
                                };
                                frmText.ShowDialog();
                            }
                        }
                        else if (m_PlotType == PlotType.Image)
                        {
                            //打开图片对话框
                            using (OpenFileDialog op = new OpenFileDialog())
                            {
                                op.Title = "打开图片文件";
                                op.Multiselect = false;
                                op.CheckFileExists = true;
                                op.Filter = "支持的图像格式(*.png,*.jpg,*.jpeg,*.gif,*.bmp)|*.png;*.jpg;*.jpeg;*.gif;*.bmp";
                                if (op.ShowDialog() == DialogResult.OK)
                                {
                                    string fileName = op.FileName;
                                    if (!System.IO.File.Exists(fileName)) return;
                                    DatasetVector cadDataset = m_workspace.Datasources[0].Datasets["cad"] as DatasetVector;
                                    Recordset recordset = cadDataset.GetRecordset(false, CursorType.Dynamic);
                                    recordset.MoveLast();

                                    Point3D pt3d = new Point3D();
                                    pt3d = m_sceneControl.Scene.PixelToGlobe(e.Location, PixelToGlobeMode.TerrainAndModel);
                                    GeoPicture3D geoPicture = new GeoPicture3D(fileName, pt3d, 0.5, 0.5, 0);
                                    recordset.AddNew(geoPicture);
                                    recordset.Update();
                                    recordset.Dispose();

                                    m_cadLayer.IsSelectable = false;
                                    m_cadLayer.UpdateData();
                                    m_sceneControl.Scene.Refresh();
                                }
                            }
                        }
                                        
                    }
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
        }

---

添加文本是正常的，你不用看，看下面的添加图片

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你好，CAD数据集是不能存图片对象的，一般我们存图片信息是在数据集中新建一个二进制的字段，然后把图片以二进制的形式存储在字段中，示范代码下面给你贴出来

---

DatasetVector datasetvc = _workspace.Datasources[0].Datasets["s111"] as DatasetVector;
            FieldInfo fieldinfo1 = new FieldInfo();
            fieldinfo1.Name = "pic";
            fieldinfo1.Caption = "pic";
            fieldinfo1.Type = FieldType.LongBinary;
            fieldinfo1.IsRequired = false;//新建二进制字段

            datasetvc.FieldInfos.Add(fieldinfo1);//datasetvc是矢量数据集
            FileStream fs = new FileStream(@"C:\Users\Administrator\Desktop\第一季度考核\三维动态标绘.png", FileMode.Open);
            byte[] byData = new byte[fs.Length];
            fs.Read(byData, 0, byData.Length);
            fs.Close();
            Recordset reco = datasetvc.GetRecordset(false, CursorType.Dynamic);
            reco.MoveFirst();
            reco.Edit();
            bool a= reco.SetLongBinary("pic",byData);
            reco.Update();

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那我想要在地图上显示图片用这种方式可以实现不，因为绘制都是放在CAD数据集中，我就想着图片也放在CAD数据集中

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程序是可以控制的，当你打开场景的时候，就将数据集中的图片信息读取出来，然后再显示出来就好了

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那点击地图添加图片还是用这种方式吗

Point3D pt3d = new Point3D();

pt3d = m_sceneControl.Scene.PixelToGlobe(e.Location, PixelToGlobeMode.TerrainAndModel);  

GeoPicture3D geoPicture = new GeoPicture3D(fileName, pt3d, 0.5, 0.5, 0);

recordset.AddNew(geoPicture);

---

你是想点击一个点就在那个点的位置添加一个图片吗

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是的，我想实现二、三维都实现点击一个点就在那个点的位置添加一个图片。

---

这个就使用地标功能（GeoPlacemark）来实现比较好，把图片作为一个地标，然后添加到KML图层上

---

//打开图片对话框
                            using (OpenFileDialog op = new OpenFileDialog())
                            {
                                op.Title = "打开图片文件";
                                op.Multiselect = false;
                                op.CheckFileExists = true;
                                op.Filter = "支持的图像格式(*.png,*.jpg,*.jpeg,*.gif,*.bmp)|*.png;*.jpg;*.jpeg;*.gif;*.bmp";
                                if (op.ShowDialog() == DialogResult.OK)
                                {
                                    string fileName = op.FileName;
                                    if (!System.IO.File.Exists(fileName)) return;
                                    DatasetVector cadDataset = m_workspace.Datasources[0].Datasets["cad"] as DatasetVector;
                                    Recordset recordset = cadDataset.GetRecordset(false, CursorType.Dynamic);
                                    recordset.MoveLast();

                                    Point3D pt3d = new Point3D();
                                    pt3d = m_sceneControl.Scene.PixelToGlobe(e.Location, PixelToGlobeMode.TerrainAndModel);
                                    GeoPicture3D geoPicture = new GeoPicture3D(fileName, pt3d, 1, 1, 90);
                                    recordset.AddNew(geoPicture);
                                    recordset.Update();
                                    recordset.Dispose();

                                    m_cadLayer.IsSelectable = false;
                                    m_cadLayer.UpdateData();
                                    m_sceneControl.Scene.Refresh();
                                }
                            }

二维这样写可以了，三维这样写不行，不知道有什么问题，是三维支持的图片格式不同吗？

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二维地图可以将图片添加到跟踪图层（TrackingLayer）上面，三维场景建议使用地标（GeoPlacemark）或者气泡（Bubble）来显示图片比较好，当然也可以添加到跟踪图层，只是需要调整好图片的大小。屏幕图层（ScreenLayer）虽然也可以添加图片，但显示出来的图片大小是固定的，不会随图缩放，一般是用来做logo的显示。

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二维你是怎么添加上去的，也是把对象直接添加到CAD数据集中？

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是的，这样是可以的

if (m_PlotType == PlotType.Image)
                        {
                            //打开图片对话框
                            using (OpenFileDialog op = new OpenFileDialog())
                            {
                                op.Title = "打开图片文件";
                                op.Multiselect = false;
                                op.CheckFileExists = true;
                                op.Filter = "支持的图像格式(*.png,*.jpg,*.jpeg,*.gif,*.bmp)|*.png;*.jpg;*.jpeg;*.gif;*.bmp";
                                if (op.ShowDialog() == DialogResult.OK)
                                {
                                    string fileName = op.FileName;
                                    if (!System.IO.File.Exists(fileName)) return;
                                    DatasetVector cadDataset = m_workspace.Datasources[0].Datasets["cad"] as DatasetVector;
                                    Recordset recordset = cadDataset.GetRecordset(false, CursorType.Dynamic);
                                    recordset.MoveLast();

                                    Point2D pt2d = new Point2D();
                                    pt2d = m_mapControl.Map.PixelToMap(e.Location);
                                    GeoPicture geoPicture = new GeoPicture(fileName, pt2d, 1, 1, 0);
                                    recordset.AddNew(geoPicture);
                                    recordset.Update();
                                    recordset.Dispose();

                                    m_cadLayer.IsSelectable = false;
                                    m_mapControl.Map.Refresh();
                                }
                            }
                        }

---

我试了一下，二三维都是可以存进CAD数据集的，也能够显示出来。

你可以做断点看一下recordset.AddNew(geoPicture);这一句是否添加成功了，还有就是通过属性表看一下对象是否加进去了。

GeoPicture geoPicture = new GeoPicture(fileName, pt2d, 1, 1, 0);这里设置图片的宽度和高度是不是有点小

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这个单位是米哦

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我三维下recordset.AddNew(geoPicture) 返回的是false，你是怎么写的？

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我跟你写得差不多一样，你看看三维点获取的对不对，看一下pt3d获取到的坐标

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我看了一下，我的对象是添加进去了，但是经纬度设置的位置没起作用，下面是我的代码，单位是度

            Point3D point3d = new Point3D(116.45, 40.91,10);//图片不在这个位置
            DatasetVector datasetCAD = datasetcheck as DatasetVector;
            Recordset reco = datasetCAD.GetRecordset(false, CursorType.Dynamic);
            _openfile = new OpenFileDialog();
            _openfile.Filter = "jpg文件(.jpg)|*.jpg*";
            if (_openfile.ShowDialog() == DialogResult.OK)
            {
                string filename = _openfile.FileName;
                Bitmap pic = new Bitmap(filename);
                double width = pic.Width;
                double height = pic.Height;
                GeoPicture3D geopictrue = new GeoPicture3D(filename, point3d, width / 10000, height / 10000, 180);
                        //screenlayer.Add(geopictrue,"logo");
               bool a= reco.AddNew(geopictrue);
                reco.Update();

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设置的位置没起作用