Ejemplo n.º 1
0
        // ArcGIS Snippet Title:
        // Create JPEG (hi-resolution) from ActiveView
        //
        // Long Description:
        // Creates a .jpg (JPEG) file from IActiveView using a high resolution exporting option. Default values of 96 DPI are overwritten to 300 used for the image creation.
        //
        // Add the following references to the project:
        // ESRI.ArcGIS.Carto
        // ESRI.ArcGIS.Display
        // ESRI.ArcGIS.Geometry
        // ESRI.ArcGIS.Output
        //
        // Intended ArcGIS Products for this snippet:
        // ArcGIS Desktop (ArcEditor, ArcInfo, ArcView)
        // ArcGIS Engine
        // ArcGIS Server
        //
        // Applicable ArcGIS Product Versions:
        // 9.2
        // 9.3
        // 9.3.1
        // 10.0
        //
        // Required ArcGIS Extensions:
        // (NONE)
        //
        // Notes:
        // This snippet is intended to be inserted at the base level of a Class.
        // It is not intended to be nested within an existing Method.
        //

        ///<summary>Creates a .jpg (JPEG) file from the ActiveView using a high resolution exporting option. Default values of 96 DPI are overwritten to 300 used for the image creation.</summary>
        ///
        ///<param name="activeView">An IActiveView interface</param>
        ///<param name="pathFileName">A System.String that the path and filename of the JPEG you want to create. Example: "C:\temp\hiResolutionTest.jpg"</param>
        ///
        ///<returns>A System.Boolean indicating the success</returns>
        ///
        ///<remarks></remarks>
        public System.Boolean CreateJPEGHiResolutionFromActiveView(ESRI.ArcGIS.Carto.IActiveView activeView, System.String pathFileName)
        {
            //parameter check
            if (activeView == null || !(pathFileName.EndsWith(".jpg")))
            {
                return(false);
            }
            ESRI.ArcGIS.Output.IExport export = (IExport) new ESRI.ArcGIS.Output.ExportJPEG();
            export.ExportFileName = pathFileName;

            // Because we are exporting to a resolution that differs from screen
            // resolution, we should assign the two values to variables for use
            // in our sizing calculations
            System.Int32 screenResolution = 96;
            System.Int32 outputResolution = 300;

            export.Resolution = outputResolution;

            tagRECT exportRECT; // This is a structure

            exportRECT.left   = 0;
            exportRECT.top    = 0;
            exportRECT.right  = activeView.ExportFrame.right * (outputResolution / screenResolution);
            exportRECT.bottom = activeView.ExportFrame.bottom * (outputResolution / screenResolution);

            // Set up the PixelBounds envelope to match the exportRECT
            ESRI.ArcGIS.Geometry.IEnvelope envelope = new ESRI.ArcGIS.Geometry.EnvelopeClass();
            envelope.PutCoords(exportRECT.left, exportRECT.top, exportRECT.right, exportRECT.bottom);
            export.PixelBounds = envelope;

            System.Int32 hDC = export.StartExporting();

            activeView.Output(hDC, (System.Int16)export.Resolution, ref exportRECT, null, null); // Explicit Cast and 'ref' keyword needed
            export.FinishExporting();
            export.Cleanup();

            return(true);
        }
Ejemplo n.º 2
0
        protected override void OnClick()
        {
            // Get the min/max zoom from user input
            int minzoom = 0;
            int maxzoom = 6;

            Ecotrust.Form1 form1 = new Ecotrust.Form1();
            if (form1.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {
                minzoom = (int)form1.numericUpDown1.Value;
                maxzoom = (int)form1.numericUpDown2.Value;
            }
            else
            {
                return; //TODO
            }

            // Use the FolderBrowserDialog Class to choose export folder
            System.Windows.Forms.FolderBrowserDialog folderDialog = new System.Windows.Forms.FolderBrowserDialog();
            folderDialog.Description = "Select output folder for map tiles...";
            string exportDir = "";

            if (folderDialog.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {
                // The returned string will be the full path, filename and file-extension for the chosen shapefile. Example: "C:\test\cities.shp"
                exportDir = folderDialog.SelectedPath;
                if (exportDir == "")
                {
                    return;  // TODO raise error
                }
            }
            else
            {
                return; //TODO
            }

            ESRI.ArcGIS.ArcMapUI.IMxDocument mxDocument = ArcMap.Application.Document as ESRI.ArcGIS.ArcMapUI.IMxDocument; // Dynamic Cast
            ESRI.ArcGIS.Carto.IActiveView    activeView = mxDocument.ActiveView;
            ESRI.ArcGIS.Carto.IMap           map        = activeView.FocusMap;

            ESRI.ArcGIS.Geometry.IEnvelope mapaoi = activeView.Extent;

            // Set up export object and tile pixel coordinates
            int tileSizeX = 256;
            int tileSizeY = 256;

            // set up exporter with transparent background
            ESRI.ArcGIS.Output.IExportPNG pngexport = new ESRI.ArcGIS.Output.ExportPNGClass();
            ESRI.ArcGIS.Display.IColor    tcolor    = new ESRI.ArcGIS.Display.RgbColorClass();
            // Warning: 254,254,254 will be set to transparent; don't use in any of map styling
            ((IRgbColor)tcolor).Red   = 254;
            ((IRgbColor)tcolor).Green = 254;
            ((IRgbColor)tcolor).Blue  = 254;
            ((ExportPNG)pngexport).BackgroundColor = tcolor;
            pngexport.TransparentColor             = tcolor;
            ESRI.ArcGIS.Output.IExport export = (ESRI.ArcGIS.Output.IExport)pngexport;

            ESRI.ArcGIS.esriSystem.tagRECT exportRECT;
            exportRECT.left   = 0;
            exportRECT.top    = 0;
            exportRECT.right  = tileSizeX;
            exportRECT.bottom = tileSizeY;
            ESRI.ArcGIS.Geometry.IEnvelope envelope = new ESRI.ArcGIS.Geometry.EnvelopeClass();
            envelope.PutCoords(exportRECT.left, exportRECT.top, exportRECT.right, exportRECT.bottom);
            export.PixelBounds = envelope;

            map.DelayDrawing(true);

            // Turn off all layers
            for (int i = 0; i < map.LayerCount; i++)
            {
                map.get_Layer(i).Visible = false;
            }

            // Calculate total number of tiles needed
            GlobalMercator mercator = new GlobalMercator();

            GlobalMercator.Coords tempmins;
            GlobalMercator.Coords tempmaxs;
            Double numTiles = 0;

            for (int tz = minzoom; tz <= maxzoom; tz++)
            {
                tempmins  = mercator.MetersToTile(mapaoi.XMin, mapaoi.YMin, tz);
                tempmaxs  = mercator.MetersToTile(mapaoi.XMax, mapaoi.YMax, tz);
                numTiles += ((tempmaxs.y - tempmins.y) + 1) * ((tempmaxs.x - tempmins.x) + 1);
            }
            numTiles *= map.LayerCount;

            ESRI.ArcGIS.esriSystem.IStatusBar statusBar = ArcMap.Application.StatusBar;
            statusBar.set_Message(0, "Rendering " + numTiles.ToString() + " tiles");

            // Create a CancelTracker
            ESRI.ArcGIS.esriSystem.ITrackCancel trackCancel = new ESRI.ArcGIS.Display.CancelTrackerClass();

            ESRI.ArcGIS.Framework.IProgressDialogFactory progressDialogFactory = new ESRI.ArcGIS.Framework.ProgressDialogFactoryClass();

            // Set the properties of the Step Progressor
            System.Int32 int32_hWnd = ArcMap.Application.hWnd;
            ESRI.ArcGIS.esriSystem.IStepProgressor stepProgressor = progressDialogFactory.Create(trackCancel, int32_hWnd);
            stepProgressor.MinRange  = 0;
            stepProgressor.MaxRange  = (int)numTiles;
            stepProgressor.StepValue = 1;
            stepProgressor.Message   = "Calculating " + numTiles.ToString() + " tiles";

            // Create the ProgressDialog. This automatically displays the dialog
            ESRI.ArcGIS.Framework.IProgressDialog2 progressDialog2 = (ESRI.ArcGIS.Framework.IProgressDialog2)stepProgressor; // Explict Cast

            // Set the properties of the ProgressDialog
            progressDialog2.CancelEnabled = true;
            progressDialog2.Description   = "Rendering " + numTiles.ToString() + " map tiles";
            progressDialog2.Title         = "Creating map tiles...";
            progressDialog2.Animation     = ESRI.ArcGIS.Framework.esriProgressAnimationTypes.esriDownloadFile;
            System.Boolean boolean_Continue = true;

            int tileCount = 0;

            for (int lyrnum = 0; lyrnum < map.LayerCount; lyrnum++)
            {
                // Turn on the layer of interest
                ESRI.ArcGIS.Carto.ILayer layer = map.get_Layer(lyrnum);
                layer.Visible = true;

                // Set extents
                //ESRI.ArcGIS.Geometry.IEnvelope layeraoi = layer.AreaOfInterest;
                ESRI.ArcGIS.Geometry.IEnvelope aoi = new ESRI.ArcGIS.Geometry.EnvelopeClass();

                // Create layer directory if it doesn't exist
                DirectoryInfo dir = new DirectoryInfo(exportDir + "\\" + layer.Name);
                if (!dir.Exists)
                {
                    dir.Create();
                }

                DateTime startTime = DateTime.Now;

                // Loop through zoom levels, rows, cols
                for (int tz = minzoom; tz <= maxzoom; tz++)
                {
                    GlobalMercator.Coords mins = mercator.MetersToTile(mapaoi.XMin, mapaoi.YMin, tz);
                    GlobalMercator.Coords maxs = mercator.MetersToTile(mapaoi.XMax, mapaoi.YMax, tz);

                    // Create zoom directory if it doesn't exist
                    DirectoryInfo dir2 = new DirectoryInfo(dir.FullName + "\\" + tz);
                    if (!dir2.Exists)
                    {
                        dir2.Create();
                    }

                    for (int tx = (int)mins.x; tx <= (int)maxs.x; tx++)
                    {
                        // Create X directory if it doesn't exist
                        DirectoryInfo dir3 = new DirectoryInfo(dir2.FullName + "\\" + tx);
                        if (!dir3.Exists)
                        {
                            dir3.Create();
                        }

                        for (int ty = (int)mins.y; ty <= (int)maxs.y; ty++)
                        {
                            // Flip y-axis for output tile name
                            int invertTy = (int)((Math.Pow(2, tz) - 1) - ty);

                            tileCount += 1;

                            // TODO Calculate time and set new message
                            // TimeSpan timeElapsed = TimeSpan.FromTicks(DateTime.Now.Subtract(startTime).Ticks); // * ((double)tileCount - (numTiles + 1)) / (numTiles + 1));
                            // double timeRemaining = (timeElapsed.TotalSeconds / (tileCount / numTiles)) - timeElapsed.TotalSeconds;
                            //(" + ((int)timeRemaining).ToString() +" remaining)";

                            stepProgressor.Message = layer.Name + "\\" + tz + "\\" + tx + "\\" + invertTy +
                                                     ".png (" + tileCount + " of " + numTiles + ")";


                            export.ExportFileName = dir3.FullName + "\\" + invertTy + ".png";

                            GlobalMercator.Bounds bnd = mercator.TileBounds(tx, ty, tz);
                            aoi.PutCoords(bnd.minx, bnd.miny, bnd.maxx, bnd.maxy);
                            aoi.SpatialReference = map.SpatialReference; // TODO aoi spatial reference == mercator?
                            // Use FullExtent instead of Extent to make the extent independent of the activeView ratio
                            activeView.FullExtent = aoi;

                            // Export
                            System.Int32 hDC = export.StartExporting();
                            activeView.Output(hDC, (System.Int16)export.Resolution, ref exportRECT, null, null); // Explicit Cast and 'ref' keyword needed
                            export.FinishExporting();
                            export.Cleanup();

                            stepProgressor.Position = tileCount;

                            //Check if the cancel button was pressed. If so, break out of row
                            boolean_Continue = trackCancel.Continue();
                            if (!boolean_Continue)
                            {
                                break;
                            }
                        }
                        //Check if the cancel button was pressed. If so, break out of col
                        boolean_Continue = trackCancel.Continue();
                        if (!boolean_Continue)
                        {
                            break;
                        }
                    }
                    //Check if the cancel button was pressed. If so, break out of layers
                    boolean_Continue = trackCancel.Continue();
                    if (!boolean_Continue)
                    {
                        break;
                    }

                    // Write log
                    using (System.IO.StreamWriter file = new System.IO.StreamWriter(exportDir + "\\log.txt", true))
                    {
                        file.WriteLine(layer.Name + ", zoom " + tz + ", numtiles " + tileCount + ":" +
                                       mins.x + " " + mins.y + " " + maxs.x + " " + maxs.y);
                    }
                }
                // Turn it off
                layer.Visible = false;
            }

            map.DelayDrawing(false);

            // Turn ON all layers
            for (int i = 0; i < map.LayerCount; i++)
            {
                map.get_Layer(i).Visible = true;
            }

            // restore extent
            activeView.FullExtent = mapaoi;
            activeView.Refresh();

            // Done
            trackCancel    = null;
            stepProgressor = null;
            progressDialog2.HideDialog();
            progressDialog2 = null;
        }