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UmaHarano edited this page Nov 12, 2025 · 1 revision 
Language:              C#  
Subject:               SceneLayers  
Contributor:           ArcGIS Pro SDK Team <[email protected]>  
Organization:          Esri, http://www.esri.com  
Date:                  11/7/2025  
ArcGIS Pro:            3.6  
Visual Studio:         2022

Create a Scene Layer

// Note: call within QueuedTask.Run()
  {
    //Create with initial visibility set to false. Add to current scene
    var createparams = new LayerCreationParams(new Uri(sceneLayerUrl, UriKind.Absolute))
    {
      IsVisible = false
    };

    //cast to specific type of scene layer being created - in this case FeatureSceneLayer
    var sceneLayer = LayerFactory.Instance.CreateLayer<Layer>(
             createparams, MapView.Active.Map) as FeatureSceneLayer;
    //or...specify the cast directly
    var sceneLayer2 = LayerFactory.Instance.CreateLayer<FeatureSceneLayer>(
             createparams, MapView.Active.Map);
    //ditto for BuildingSceneLayer, PointCloudSceneLayer, IntegratedMeshSceneLayer
    //...
  }

Building Discipline Scene Layer

Get BuildingDisciplineSceneLayer Discipline

var bsl_discipline = MapView.Active.Map.GetLayersAsFlattenedList().OfType<BuildingDisciplineSceneLayer>().FirstOrDefault(l => l.Name == "Architectural");
  var disciplineName = bsl_discipline.GetDiscipline();

Enumerate the Discipline Layers from a Building SceneLayer

var bldgLayer = MapView.Active.Map.GetLayersAsFlattenedList().OfType<BuildingSceneLayer>().First();
  var disciplines = new Dictionary<string, BuildingDisciplineSceneLayer>();
  //A Building layer has two children - Overview and FullModel
  //Overview is a FeatureSceneLayer
  //Full Model is a BuildingDisciplineSceneLayer that contains the disciplines

  var fullModel = bldgLayer.FindLayers("Full Model").First()
                                 as BuildingDisciplineSceneLayer;

  //collect information on the disciplines
  var name = fullModel.Name;

  var discipline = fullModel.GetDiscipline();
  //etc
  //TODO - use collected information

  disciplines.Add(discipline, fullModel);

  //Discipline layers are composite layers too
  foreach (var childDiscipline in fullModel.Layers
                      .OfType<BuildingDisciplineSceneLayer>())
  {
    //Discipline layers can also contain FeatureSceneLayers that render the
    //individual full model contents
    var content_names = string.Join(", ", childDiscipline.Layers
         .OfType<FeatureSceneLayer>().Select(fl => fl.Name));
    // Recursively call this "function" to go deeper
  }

Building Scene Layer

Name of BuildingSceneLayer

bsl = MapView.Active.Map.GetLayersAsFlattenedList()
        .OfType<BuildingSceneLayer>().FirstOrDefault();
  var scenelayerName = bsl.Name;

Query Building Scene Layer for available Types and Values

// Note: call within QueuedTask.Run()
  {
    var dict = bsl.GetAvailableFieldsAndValues();

    //get a list of existing disciplines
    var disciplines = dict.SingleOrDefault(
             kvp => kvp.Key == "Discipline").Value ?? new List<string>();

    //get a list of existing categories
    var categories = dict.SingleOrDefault(
             kvp => kvp.Key == "Category").Value ?? new List<string>();

    //get a list of existing floors or "levels"
    var floors = dict.SingleOrDefault(
             kvp => kvp.Key == "BldgLevel").Value ?? new List<string>();
  }

Create a Default Filter and Get Filter Count

// Note: call within QueuedTask.Run()
  {
    var filter1 = bsl.CreateDefaultFilter();
    var values = filter1.FilterBlockDefinitions[0].SelectedValues;
    //values will be a single value for the type
    //"CreatedPhase", value "New Construction"

    //There will be at least one filter after "CreateDefaultFilter()" call
    var filtersCount = bsl.GetFilters().Count;
  }

Get all the Filters that Contain WireFrame Blocks

// Note: call within QueuedTask.Run()
  {
    //Note: wire_frame_filters can be null in this example
    var wire_frame_filters = bsl.GetFilters().Where(
      f => f.FilterBlockDefinitions.Any(
        fb => fb.FilterBlockMode == Object3DRenderingMode.Wireframe));
    //substitute Object3DRenderingMode.None to get blocks with a solid mode (default)
    //and...
    //fb.FilterBlockMode == Object3DRenderingMode.Wireframe &&
    //fb.FilterBlockMode == Object3DRenderingMode.None
    //for blocks with both
  }

Set and Clear Active Filter for BuildingSceneLayer

// Note: call within QueuedTask.Run()
  {
    //Note: Use HasFilter to check if a given filter id exists in the layer
    if (bsl.HasFilter(filter.ID))
      bsl.SetActiveFilter(filter.ID);
    var activeFilter = bsl.GetActiveFilter();

    //Clear the active filter
    bsl.ClearActiveFilter();
  }

Get BuildingSceneLayer Filter ID and Filter

var filterDefinition = bsl.GetFilter(filterID);
  //or via Linq
  //var filter = bsl.GetFilters().FirstOrDefault(f => f.ID == filterID1);

Modify BuildingSceneLayer Filter Name and Description

// Note: call within QueuedTask.Run()
  {

    filter.Name = "Updated Filter Name";
    filter.Description = "Updated Filter description";
    bsl.UpdateFilter(filter);
  }

Create a Filter using Building Level and Category

// Note: call within QueuedTask.Run()
  {
    //refer to "Query Building Scene Layer for available Types and Values
    var dict = bsl.GetAvailableFieldsAndValues();
    var categories = dict.SingleOrDefault(kvp => kvp.Key == "Category").Value;
    //get a list of existing floors or "levels"
    var floors = dict.SingleOrDefault(kvp => kvp.Key == "BldgLevel").Value;

    //Make a new filter definition
    var fd = new FilterDefinition()
    {
      Name = "Floor and Category Filter",
      Description = "Example filter",
    };
    //Set up the values for the filter
    var filtervals = new Dictionary<string, List<string>>();
    filtervals.Add("BldgLevel", new List<string>() { floors[0] });
    var category_vals = categories.Where(v => v == "Walls" || v == "Stairs").ToList() ?? new List<string>();
    if (category_vals.Count() > 0)
    {
      filtervals.Add("Category", category_vals);
    }
    //Create a solid block (other option is "Wireframe")
    var fdef = new FilterBlockDefinition()
    {
      FilterBlockMode = Object3DRenderingMode.None,
      Title = "Solid Filter",
      SelectedValues = filtervals//Floor and Category
    };
    //Apply the block
    fd.FilterBlockDefinitions = new List<FilterBlockDefinition>() { fdef };
    //Add the filter definition to the layer
    bsl.UpdateFilter(fd);
    //Set it active. The ID is auto-generated
    bsl.SetActiveFilter(fd.ID);
  }

Modify BuildingSceneLayer Filter Block

// Note: call within QueuedTask.Run()
  {
    var filterBlock = new FilterBlockDefinition();
    filterBlock.FilterBlockMode = Object3DRenderingMode.Wireframe;

    var selectedValues = new Dictionary<string, List<string>>();
    //We assume QueryAvailableFieldsAndValues() contains "Walls" and "Doors"
    //For 'Category'
    selectedValues["Category"] = new List<string>() { "Walls", "Doors" };
    filterBlock.SelectedValues = selectedValues;

    //Overwrite
    filter.FilterBlockDefinitions = new List<FilterBlockDefinition>() { filterBlock };
    bsl.UpdateFilter(filter);
  }

Remove BuildingSceneLayer Filter

// Note: call within QueuedTask.Run()
  {
    //Note: Use HasFilter to check if a given filter id exists in the layer
    if (bsl.HasFilter(filter.ID))
      bsl.RemoveFilter(filter.ID);
    //Or remove all filters
    bsl.RemoveAllFilters();
  }

FeatureSceneLayer Editing

Determine if a FeatureSceneLayer supports editing

featSceneLayer = MapView.Active.Map.GetLayersAsFlattenedList()
                     .OfType<FeatureSceneLayer>().FirstOrDefault();
  if (!featSceneLayer.HasAssociatedFeatureService ||
      !featSceneLayer.IsEditable)
  {
    //not supported - exit the function
  }
  //TODO continue editing here...

Create a new Point feature in FeatureSceneLayer

//must support editing!
  if (!featSceneLayer.HasAssociatedFeatureService ||
      !featSceneLayer.IsEditable)
  {
    //not supported - exit the function
  }

  //Check geometry type...must be point in this example
  var editOp = new EditOperation()
  {
    Name = "Create new 3d point feature",
    SelectNewFeatures = true
  };

  var attributes = new Dictionary<string, object>();
  //mapPoint contains the new 3d point location
  attributes.Add("SHAPE", mapPoint);
  attributes.Add("TreeID", "1");
  editOp.Create(featSceneLayer, attributes);
  editOp.ExecuteAsync();

Delete all the selected features in FeatureSceneLayer

if (!featSceneLayer.HasAssociatedFeatureService ||
    !featSceneLayer.IsEditable)
    return;
  // Note: call within QueuedTask.Run()
  {
    var delOp = new EditOperation()
    {
      Name = "Delete selected features"
    };
    //Assuming we have a selection on the layer...
    delOp.Delete(featSceneLayer, featSceneLayer.GetSelection().GetObjectIDs());
    delOp.ExecuteAsync();
  }

Edit the attributes of a FeatureSceneLayer

//must support editing!
  if (!featSceneLayer.HasAssociatedFeatureService ||
      !featSceneLayer.IsEditable)
    return;

  // Note: call within QueuedTask.Run()
  {
    var editOp = new EditOperation()
    {
      Name = "Edit FeatureSceneLayer Attributes",
      SelectModifiedFeatures = true
    };
    //make an inspector
    var inspector = new Inspector();
    //get the attributes for the specified oid
    inspector.Load(featSceneLayer, oid);
    inspector["PermitNotes"] = "test";//modify
    editOp.Modify(inspector);
    editOp.Execute();//synchronous flavor
  }

FeatureSceneLayer

Name of FeatureSceneLayer

featSceneLayer = MapView.Active.Map.GetLayersAsFlattenedList()
                   .OfType<FeatureSceneLayer>().FirstOrDefault();
  var scenelayerName = featSceneLayer?.Name;

Get the Data Source type

// Note: call within QueuedTask.Run()
  {
    var dataSourceType = featSceneLayer?.GetDataSourceType() ??
                             SceneLayerDataSourceType.Unknown;
    if (dataSourceType == SceneLayerDataSourceType.SLPK)
    {
      //Uses SLPK - only cached attributes
    }
    else if (dataSourceType == SceneLayerDataSourceType.Service)
    {
      //Hosted service - can have live attributes - check HasAssociatedFeatureService
    }
  }

Get the Associated Feature class

// Note: call within QueuedTask.Run()
  {
    if (featSceneLayer.HasAssociatedFeatureService)
    {
      using (var fc = featSceneLayer.GetFeatureClass())
      {
        //TODO query underlying feature class
      }
    }
  }

Get Field Definitions

// Note: call within QueuedTask.Run()
  {
    //Get only the readonly fields
    var readOnlyFields = featSceneLayer.GetFieldDescriptions()
                              .Where(fdesc => fdesc.IsReadOnly);
  }

Set a Definition Query

featSceneLayer.SetDefinitionQuery("Name = 'Ponderosa Pine'");

Select features via the MapView

//assume the geometry used in SelectFeaturesEx() is coming from a 
  //map tool...
  //SketchType = SketchGeometryType.Rectangle;
  //SketchOutputMode = SketchOutputMode.Screen;

  // Note: call within QueuedTask.Run()
  {
    var result = MapView.Active.SelectFeaturesEx(geometry);
    //Get scene layers with selections
    var scene_layers = result.ToDictionary<FeatureSceneLayer>();
    foreach (var kvp in scene_layers)
    {
      var scene_layer = kvp.Key as FeatureSceneLayer;
      var sel_oids = kvp.Value;
      //If there are attributes then get them
      if (scene_layer.HasAssociatedFeatureService)
      {
        var insp = new Inspector();
        foreach (var objectid in sel_oids)
        {
          insp.Load(scene_layer, objectid);
          //TODO something with retrieved attributes
        }
      }
    }
  }

Has Associated FeatureService

if (featSceneLayer.HasAssociatedFeatureService)
  {
    //Can Select and Search...possibly edit
  }

Search Rows on the FeatureSceneLayer

if (!featSceneLayer.HasAssociatedFeatureService)
    return;//Search and Select not supported

  //Multipatch (Object3D) or point?
  //var is3dObject = ((ISceneLayerInfo)featSceneLayer).SceneServiceLayerType 
  //                                  == esriSceneServiceLayerType.Object3D;
  var is3dObject = featSceneLayer.FeatureSceneLayerType == FeatureSceneLayerType.Object3D;
  // Note: call within QueuedTask.Run()
  {
    var queryFilter = new QueryFilter
    {
      WhereClause = "Name = 'Ponderosa Pine'",
      SubFields = "*"
    };

    int rowCount = 0;
    //or select... var select = featSceneLayer.Select(queryFilter)
    using (RowCursor rowCursor = featSceneLayer.Search(queryFilter))
    {
      while (rowCursor.MoveNext())
      {
        using (var feature = rowCursor.Current as Feature)
        {
          oid = feature.GetObjectID();
          var shape = feature.GetShape();
          var attrib = feature["Name"];
          if (is3dObject)
          {
            //shape is a multipatch
          }
          else
          {
            //shape is a point
          }
          rowCount += 1;
        }
      }
    }
  }

Hide Selected features and Show Hidden features

if (featSceneLayer.HasAssociatedFeatureService)
    return;//Search and Select not supported

  // Note: call within QueuedTask.Run()
  {
    QueryFilter qf = new QueryFilter()
    {
      ObjectIDs = new List<long>() { 6069, 6070, 6071 },
      SubFields = "*"
    };
    featSceneLayer.Select(qf, SelectionCombinationMethod.New);

    featSceneLayer.HideSelectedFeatures();
    var selectionCount = featSceneLayer.SelectionCount;

    featSceneLayer.ShowHiddenFeatures();
    selectionCount = featSceneLayer.SelectionCount;
  }

Use MapView Selection SelectFeaturesEx or GetFeaturesEx

var sname = featSceneLayer.Name;

  // Note: call within QueuedTask.Run()
  {
    //Select all features within the current map view
    var sz = MapView.Active.GetViewSize();

    var c_ll = new Coordinate2D(0, 0);
    var c_ur = new Coordinate2D(sz.Width, sz.Height);
    //Use screen coordinates for 3D selection on MapView
    var env = EnvelopeBuilderEx.CreateEnvelope(c_ll, c_ur);

    //HasAssociatedFeatureService does not matter for SelectFeaturesEx
    //or GetFeaturesEx
    var result = MapView.Active.SelectFeaturesEx(env);
    //var result = MapView.Active.GetFeaturesEx(env);

    //The list of object ids from SelectFeaturesEx
    var oids1 = result.ToDictionary().Where(kvp => kvp.Key.Name == sname).First().Value;
    //TODO - use the object ids

    MapView.Active.Map.ClearSelection();
  }

Use Select or Search with a Spatial Query

// Note: call within QueuedTask.Run()
{
  if (!featSceneLayer.HasAssociatedFeatureService)
    return;//no search or select

  //Select all features within the current map view
  var sz = MapView.Active.GetViewSize();
  var map_pt1 = MapView.Active.ClientToMap(new System.Windows.Point(0, sz.Height));
  var map_pt2 = MapView.Active.ClientToMap(new System.Windows.Point(sz.Width, 0));

  //Convert to an envelope
  var temp_env = EnvelopeBuilderEx.CreateEnvelope(map_pt1, map_pt2, MapView.Active.Map.SpatialReference);

  //Project if needed to the layer spatial ref
  SpatialReference sr = null;
  using (var fc = featSceneLayer.GetFeatureClass())
  using (var fdef = fc.GetDefinition())
    sr = fdef.GetSpatialReference();

  var env = GeometryEngine.Instance.Project(temp_env, sr) as Envelope;

  //Set up a query filter
  var sf = new SpatialQueryFilter()
  {
    FilterGeometry = env,
    SpatialRelationship = SpatialRelationship.Intersects,
    SubFields = "*"
  };

  //Select against the feature service
  var select = featSceneLayer.Select(sf);
  if (select.GetCount() > 0)
  {
    //enumerate over the selected features
    using (var rc = select.Search())
    {
      while (rc.MoveNext())
      {
        using (var feature = rc.Current as Feature)
        {
          oid = feature.GetObjectID();
          //etc.
        }
      }
    }
  }
  MapView.Active.Map.ClearSelection();
}

PointCloudSceneLayer

Name of PointCloudSceneLayer

var scenelayerName = pointCloudSceneLayer?.Name;

Get Data Source type for PointCloudSceneLayer

SceneLayerDataSourceType dataSourceType = pointCloudSceneLayer.GetDataSourceType();
  if (dataSourceType == SceneLayerDataSourceType.Service)
  {
    //TODO...
  }
  else if (dataSourceType == SceneLayerDataSourceType.SLPK)
  {

  }

Query all class codes and labels in the PointCloudSceneLayer

// Note: call within QueuedTask.Run()
  {
    Dictionary<int, string> classCodesAndLabels =
                    pointCloudSceneLayer.GetAvailableClassCodesAndLabels();
  }

Set a Filter for PointCloudSceneLayer

// Note: call within QueuedTask.Run()
  {
    //Retrieve the available classification codes
    var dict = pointCloudSceneLayer.GetAvailableClassCodesAndLabels();

    //Filter out low noise and unclassified (7 and 1 respectively)
    //consult https://pro.arcgis.com/en/pro-app/help/data/las-dataset/storing-lidar-data.htm
    var filterDef = new PointCloudFilterDefinition()
    {
      ClassCodes = dict.Keys.Where(c => c != 7 && c != 1).ToList(),
      ReturnValues = new List<PointCloudReturnType> {
                        PointCloudReturnType.FirstOfMany }
    };
    //apply the filter
    pointCloudSceneLayer.SetFilters(filterDef.ToCIM());
  }

Update the ClassFlags for PointCloudSceneLayer

// Note: call within QueuedTask.Run()
  {
    var filters = pointCloudSceneLayer.GetFilters();
    PointCloudFilterDefinition fdef = null;
    if (filters.Count() == 0)
    {
      fdef = new PointCloudFilterDefinition()
      {
        //7 is "edge of flight line" - exclude
        ClassFlags = new List<ClassFlag> {
         new ClassFlag(7, ClassFlagOption.Exclude) }
      };
    }
    else
    {
      fdef = PointCloudFilterDefinition.FromCIM(filters);
      //keep any include or ignore class flags
      var keep = fdef.ClassFlags.Where(
             cf => cf.ClassFlagOption != ClassFlagOption.Exclude).ToList();
      //7 is "edge of flight line" - exclude
      keep.Add(new ClassFlag(7, ClassFlagOption.Exclude));
      fdef.ClassFlags = keep;
    }
    //apply
    pointCloudSceneLayer.SetFilters(fdef.ToCIM());
  }

Get the filters for PointCloudSceneLayer

// Note: call within QueuedTask.Run()
  {
    IReadOnlyList<CIMPointCloudFilter> updatedFilter = pointCloudSceneLayer.GetFilters();
    foreach (var f in updatedFilter)
    {
      //There is either 0 or 1 of each
      if (f is CIMPointCloudReturnFilter returnFilter)
      {
        PointCloudFilterDefinition pcfl = PointCloudFilterDefinition.FromCIM(updatedFilter);
        List<PointCloudReturnType> updatedReturnValues = pcfl.ReturnValues;

      }
      if (f is CIMPointCloudValueFilter classCodesFilter)
      {
        // do something
      }

      if (f is CIMPointCloudBitFieldFilter classFlagsFilter)
      {
        // do something
      }
    }
  }

Clear filters in PointCloudSceneLayer

// Note: call within QueuedTask.Run()
  pointCloudSceneLayer.ClearFilters();

Get PointCloudSceneLayer Renderer and RendererType

// Note: call within QueuedTask.Run()
  {
    CIMPointCloudRenderer cimGetPCLRenderer = pointCloudSceneLayer.GetRenderer();
    //Can be one of Unknown, Stretch, ClassBreaks, UniqueValue, RGB
    PointCloudRendererType pclRendererType = pointCloudSceneLayer.RendererType;
  }

Query PointCloudSceneLayer Renderer fields

// Note: call within QueuedTask.Run()
  {
    IReadOnlyList<string> flds = pointCloudSceneLayer.GetAvailablePointCloudRendererFields(
                          PointCloudRendererType.UniqueValueRenderer);
    var fldCount = flds.Count;
  }

Create and Set a Stretch Renderer

// Note: call within QueuedTask.Run()
  {
    var fields = pointCloudSceneLayer.GetAvailablePointCloudRendererFields(
                            PointCloudRendererType.StretchRenderer);
    var stretchDef = new PointCloudRendererDefinition(
                              PointCloudRendererType.StretchRenderer)
    {
      //Will be either ELEVATION or INTENSITY
      Field = fields[0]
    };
    //Create the CIM Renderer
    var stretchRenderer = pointCloudSceneLayer.CreateRenderer(stretchDef)
                                        as CIMPointCloudStretchRenderer;
    //Apply a color ramp
    var style = Project.Current.GetItems<StyleProjectItem>()
                                    .First(s => s.Name == "ArcGIS Colors");
    var colorRamp = style.SearchColorRamps("").First();
    stretchRenderer.ColorRamp = colorRamp.ColorRamp;
    //Apply modulation
    stretchRenderer.ColorModulation = new CIMColorModulationInfo()
    {
      MinValue = 0,
      MaxValue = 100
    };
    //apply the renderer
    pointCloudSceneLayer.SetRenderer(stretchRenderer);
  }

Create and Set a ClassBreaks Renderer

// Note: call within QueuedTask.Run()
  {
    var fields = pointCloudSceneLayer.GetAvailablePointCloudRendererFields(
                       PointCloudRendererType.ClassBreaksRenderer);
    var classBreakDef = new PointCloudRendererDefinition(
                              PointCloudRendererType.ClassBreaksRenderer)
    {
      //ELEVATION or INTENSITY
      Field = fields[0]
    };
    //create the renderer
    var cbr = pointCloudSceneLayer.CreateRenderer(classBreakDef)
                              as CIMPointCloudClassBreaksRenderer;
    //Set up a color scheme to use
    var style = Project.Current.GetItems<StyleProjectItem>()
                               .First(s => s.Name == "ArcGIS Colors");
    var rampStyle = style.LookupItem(
      StyleItemType.ColorRamp, "Spectrum By Wavelength-Full Bright_Multi-hue_2")
                                                                as ColorRampStyleItem;
    var colorScheme = rampStyle.ColorRamp;
    //Set up 6 manual class breaks
    var breaks = 6;
    var colors = ColorFactory.Instance.GenerateColorsFromColorRamp(
                                                colorScheme, breaks);
    var classBreaks = new List<CIMColorClassBreak>();
    var min = cbr.Breaks[0].UpperBound;
    var max = cbr.Breaks[cbr.Breaks.Count() - 1].UpperBound;
    var step = (max - min) / (double)breaks;

    //add in the class breaks
    double upper = min;
    for (int b = 1; b <= breaks; b++)
    {
      double lower = upper;
      upper = b == breaks ? max : min + (b * step);
      var cb = new CIMColorClassBreak()
      {
        UpperBound = upper,
        Label = string.Format("{0:#0.0#} - {1:#0.0#}", lower, upper),
        Color = colors[b - 1]
      };
      classBreaks.Add(cb);
    }
    cbr.Breaks = classBreaks.ToArray();
    pointCloudSceneLayer.SetRenderer(cbr);
  }

PointCloudSceneLayer Extended Properties

Edit Color Modulation

// Note: call within QueuedTask.Run()
  {
    var def = pointCloudSceneLayer.GetDefinition() as CIMPointCloudLayer;
    //Get the ColorModulation off the renderer
    var modulation = def.Renderer.ColorModulation;
    if (modulation == null)
      modulation = new CIMColorModulationInfo();
    //Set the minimum and maximum intensity as needed
    modulation.MinValue = 0;
    modulation.MaxValue = 100.0;
    //apply back
    def.Renderer.ColorModulation = modulation;
    //Commit changes back to the CIM
    pointCloudSceneLayer.SetDefinition(def);
  }

Edit The Renderer to use Fixed Size

// Note: call within QueuedTask.Run()
  {
    var def = pointCloudSceneLayer.GetDefinition() as CIMPointCloudLayer;

    //Set the point shape and sizing on the renderer
    def.Renderer.PointShape = PointCloudShapeType.DiskShaded;
    var pointSize = new CIMPointCloudFixedSizeAlgorithm()
    {
      UseRealWorldSymbolSizes = false,
      Size = 8
    };
    def.Renderer.PointSizeAlgorithm = pointSize;
    //Commit changes back to the CIM
    pointCloudSceneLayer.SetDefinition(def);
  }

Edit the Renderer to Scale Size

// Note: call within QueuedTask.Run()
  {
    var def = pointCloudSceneLayer.GetDefinition() as CIMPointCloudLayer;

    //Set the point shape and sizing on the renderer
    def.Renderer.PointShape = PointCloudShapeType.DiskFlat;//default
    var scaleSize = new CIMPointCloudSplatAlgorithm()
    {
      MinSize = 8,
      ScaleFactor = 1.0 //100%
    };
    def.Renderer.PointSizeAlgorithm = scaleSize;
    //Commit changes back to the CIM
    pointCloudSceneLayer.SetDefinition(def);
  }

Edit Density settings

// Note: call within QueuedTask.Run()
  {
    var def = pointCloudSceneLayer.GetDefinition() as CIMPointCloudLayer;
    //PointsBudget - corresponds to Display Limit on the UI
    // - the absolute maximum # of points to display
    def.PointsBudget = 1000000;

    //PointsPerInch - corresponds to Density Min --- Max on the UI
    // - the max number of points per display inch to renderer
    def.PointsPerInch = 15;
    //Commit changes back to the CIM
    pointCloudSceneLayer.SetDefinition(def);
  }

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ProSnippets: SceneLayers

Building Discipline Scene Layer

Building Scene Layer

FeatureSceneLayer Editing

FeatureSceneLayer

PointCloudSceneLayer

PointCloudSceneLayer Extended Properties

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