How to change data source of Stereo Map

[BarbaraSchneider2]

I'm using the following code to change the data source of the stereo map, but it doesn't work:

await QueuedTask.Run(async () =>
{
    Map stereoMap = await ProjectUtils.GetStereoMapAsync();
    CIMMap cimMap = stereoMap.GetDefinition();
    var stereoProps = cimMap.StereoProperties;

    WorkspaceFactory workspaceFactory = WorkspaceFactory.FileGDB;
    var fileGdbConnPath = new FileGeodatabaseConnectionPath(new Uri(@"D:\Data\StartProject.gdb", UriKind.Absolute));
    var workspaceConnectionString = new Geodatabase(fileGdbConnPath).GetConnectionString();

    CIMStandardDataConnection mosaicDataConnection = new  CIMStandardDataConnection()
    {
        WorkspaceConnectionString = workspaceConnectionString,
        WorkspaceFactory = workspaceFactory,
        Dataset = "MyMosaic",
        DatasetType = esriDatasetType.esriDTMosaicDataset
    };
    stereoProps.StereoModelCollection = mosaicDataConnection;
    cimMap.StereoProperties = stereoProps;

    MapView.Active.Redraw(true);
});

 Any help is appreciated, thank you!

[NarelleChedzey · Accepted solution]

Hi Barbara, 

It looks like you have forgotten to save the updated CIM definition back to the map.   Remember that a GetDefinition call also needs a SetDefinition call after any updates. 

Try adding a  steroMap.SetDefinition call with your updated cimMap before you redraw. 

Narelle

[BarbaraSchneider2]

Hi Narelle,

thank you for your reply! It works now. However, I can only set the data source if there already is a data source set. If I manually clear the data source of the Stereo Map and then add the data source again programmatically, nothing happens. Is this a bug?

Thank you,
Barbara

[NarelleChedzey]

Barbara, 

If the data source has been cleared, then you probably need to also set other properties on the CIMMapStereoProperties instance.   

Try something similar to the following

protected override async void OnClick()
{
  Map stereoMap = MapView.Active.Map;

  await QueuedTask.Run(async () =>
  {
    CIMMap cimMap = stereoMap.GetDefinition();
    var stereoProps = cimMap.StereoProperties;

    string path = @"D:\Data\StartProject.gdb";
    var fileGdbConnPath = new FileGeodatabaseConnectionPath(new Uri(path, UriKind.Absolute));

    using (var gdb = new Geodatabase(fileGdbConnPath))
    {
      ArcGIS.Core.Data.Raster.MosaicDataset mDataset = gdb.OpenDataset<ArcGIS.Core.Data.Raster.MosaicDataset>("MyMoaid");
      var mosaicDataConnection = mDataset.GetDataConnection();

      var (leftImageID, rightImageID) = GetStereoImages(mDataset);
          
      stereoProps.SourceType = StereoSourceType.StereoModelCollection;
      stereoProps.StereoModelCollection = mosaicDataConnection;
      stereoProps.LeftImageID = leftImageID;
      stereoProps.RightImageID = rightImageID;

      cimMap.StereoProperties = stereoProps;

      stereoMap.SetDefinition(cimMap);
    }

  //        MapView.Active.Redraw(true);
  });
}

// Find the left and right image IDs from the mosaicDataset
// This is achieved by querying the stereo table and retrieving
// the ImageID1 and ImageID2 fields. 
(long image1ID, long image2ID) GetStereoImages(ArcGIS.Core.Data.Raster.MosaicDataset mDataset)
{
  var stereoTable = mDataset?.GetStereoTable();
  var stereoTableDef = stereoTable?.GetDefinition();
  if (stereoTableDef == null)
    return (-1, -1);

  var image1Fld = stereoTableDef.FindField("ImageID1");
  var image2Fld = stereoTableDef.FindField("ImageID2");
  if ((image1Fld == -1) || (image2Fld == -1))
    return (-1, -1);

  long image1 = -1;
  long image2 = -1;
  using (var cursor = stereoTable.Search(null))
  {
    if (cursor.MoveNext())
    {
      using (var row = cursor.Current)
      {
        var image = row[image1Fld];
        if (image != null)
          System.Int64.TryParse(image.ToString(), out image1);
        image = row[image2Fld].ToString();
        if (image != null)
          System.Int64.TryParse(image.ToString(), out image2);
      }
    }
  }

  return (image1, image2);
}

You may also need to set the LeftImageColorizer and RightImageColorizer properties, but I am not sure. 

Let me know if this still doesn't work for you.  It worked for my test scenario, but I am not a raster expert.

Narelle

[BarbaraSchneider2]

Hello Narelle,

this works! I don't need to set the LeftImageColorizer and RightImageColorizer. Thank you very much.

Barbara