How to insert a raster image using SetImage() method of RasterImageDef

[Anonymous]

First I'm sorry for asking the same question  in another forum.

~~~~~~~~~~~~~~~~~~

Usually, when inserting  a raster image, we should assign its pathname in RasterImageDef, and

the image should exist as a file in the disk.

      Here I wanna create a image in Memory instead of disk, and display it in AutoCAD. The image data

are  stored in an array like this: byte[].

I guess I might  use SetImage() method of RasterImageDef. But I don't know how to use it.

SetImage() method has 3 parameters to be assigned :
public virtual void SetImage(IntPtr image, IntPtr fileDescription, bool modifyDatabase);

      Should I use this method to display an image in Memory? Then, how? Or any method else?

Here are codes I used to insert an image in the disk below. I think some lines must be changed to reach my current target.

Thanks in advance！

            Database db = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.Database;
            Autodesk.AutoCAD.DatabaseServices.TransactionManager tm = db.TransactionManager;
            using (Transaction t = tm.StartTransaction())
            {
                // open the dictionary
                Autodesk.AutoCAD.DatabaseServices.ObjectId imgDictID = RasterImageDef.GetImageDictionary(db);
                DBDictionary imgDict;
                if (imgDictID.OldId == 0)
                {
                    imgDictID = RasterImageDef.CreateImageDictionary(db);
                }


                // create the raster image definition 
                RasterImageDef rasterDef = new RasterImageDef();

                // rasterDef.SourceFileName = mapURL;
                string fName;
                Point3d pt;
                fName = "D:\\atoll.jpg";
                rasterDef.SourceFileName = fName;   
                
                rasterDef.Load();

                // test the image dictionary and the raster before going further 
                bool bTestLoad = rasterDef.IsLoaded;

                Autodesk.AutoCAD.DatabaseServices.ObjectId TestImgDictID = RasterImageDef.GetImageDictionary(db);
                //Write the dictionary
                imgDict = (DBDictionary)t.GetObject(imgDictID, OpenMode.ForWrite);

                // add the raster definition to the dictionary if it doesn't already exist
                Autodesk.AutoCAD.DatabaseServices.ObjectId rasterDefID;

                String name = "test"; 
                if (!imgDict.Contains(name))
                {
                    rasterDefID = imgDict.SetAt(name, rasterDef);
                }
                else
                {
                    Editor ed = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.Editor;
                    ed.WriteMessage("Image Already Exits!");

                    return;
                }
                t.AddNewlyCreatedDBObject(rasterDef, true);

                bool bTestImage = imgDict.Contains(name);

                // now add the REAL raster image reference               
                RasterImage rasterImg = new RasterImage();
                rasterImg.ImageDefId = rasterDef.ObjectId;
                
                pt = new Point3d(500, 400, 0);
                rasterImg.Orientation = new CoordinateSystem3d(pt, new Vector3d(2000, 0, 0), new Vector3d(0, 1500, 0));    

                BlockTable bt = (BlockTable)tm.GetObject(db.BlockTableId, OpenMode.ForRead, false);                
                BlockTableRecord btr = (BlockTableRecord)tm.GetObject(bt[BlockTableRecord.ModelSpace], OpenMode.ForWrite, false);
               
                btr.AppendEntity(rasterImg);                
                tm.AddNewlyCreatedDBObject(rasterImg, true);

                testRefID = rasterImg.ObjectId;
                rasterImg.AssociateRasterDef(rasterDef);
                
                t.Commit();
                t.Dispose();

            }

[GTVic]

Just a general comment... I don't believe there is any way to embed an image that is not a file. All AutoCAD raster images are basically xref'd files.

You may be able to draw an image on the AutoCAD graphics screen using a custom draw routine but I believe your application would be responsible for rendering the graphic and refreshing it.

You could probably go as far as creating reactors to refresh the image as the user zoom/pans/etc. Basically you would be creating a custom object to embed images in a drawing. Object enabler type stuff.

The ability to embed raster images and control the plotting color would be a very nice addition to AutoCAD rather than all these 3D tools they keep adding.