ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Desktop.Mapping Namespace / TerrainDirtyAreaRendererDefinition Class
Members Example Version

TerrainDirtyAreaRendererDefinition Class
Represents a simple renderer definition to draw dirty areas in a surface layer with a common symbol.
Object Model
TerrainDirtyAreaRendererDefinition ClassCIMSymbolReference Class
Syntax
public class TerrainDirtyAreaRendererDefinition : TinSimpleRendererDefinition 
Remarks
The symbol used to define the TinSimpleRendererDefinition.SymbolTemplate should be a ArcGIS.Core.CIM.CIMPolygonSymbol.

The dirty area renderer is only valid for TerrainLayer.

Once you define a simple renderer, you can call a surface layer's CanCreateRenderer, CreateRenderer, CanSetRenderer and SetRenderer methods to create and assign a renderer to a surface layer.

Example
Create a TerrainLayer with renderers
//Must be on the QueuedTask.Run()

var terrainCP_renderers = new TerrainLayerCreationParams(terrain);
terrainCP_renderers.Name = "My LAS Layer";
terrainCP_renderers.IsVisible = true;

// define the edge type renderer - use defaults
var edgeRD = new TinBreaklineRendererDefinition();

// define the face/surface renderer
var faceRD = new TinFaceClassBreaksRendererDefinition();
faceRD.ClassificationMethod = ClassificationMethod.NaturalBreaks;
// accept default color ramp, breakCount

// define the dirty area renderer - use defaults
var dirtyAreaRD = new TerrainDirtyAreaRendererDefinition();

// add renderers to dictionary
var t_dict = new Dictionary<SurfaceRendererTarget, TinRendererDefinition>();
t_dict.Add(SurfaceRendererTarget.Edges, edgeRD);
t_dict.Add(SurfaceRendererTarget.Surface, faceRD);
t_dict.Add(SurfaceRendererTarget.DirtyArea, dirtyAreaRD);

// assign dictionary to creation params
terrainCP_renderers.RendererDefinitions = t_dict;

//Create the layer to the terrain
var terrainLayer_rd = LayerFactory.Instance.CreateLayer<TerrainLayer>(terrainCP_renderers, map);
Dirty Area Renderer
// applies to Terrain layers only

var dirtyAreaRendererDef = new TerrainDirtyAreaRendererDefinition();
// accept default labels, symbolTemplate

var terrainLayer = MapView.Active.Map.GetLayersAsFlattenedList().OfType<TerrainLayer>().FirstOrDefault();
if (terrainLayer == null)
  return;

if (terrainLayer.CanCreateRenderer(dirtyAreaRendererDef))
{
  CIMTinRenderer renderer = terrainLayer.CreateRenderer(dirtyAreaRendererDef);
  if (terrainLayer.CanSetRenderer(renderer, SurfaceRendererTarget.DirtyArea))
    terrainLayer.SetRenderer(renderer, SurfaceRendererTarget.DirtyArea);
}
Inheritance Hierarchy

System.Object
   ArcGIS.Desktop.Mapping.LayerDrawingDefinition
      ArcGIS.Desktop.Mapping.TinRendererDefinition
         ArcGIS.Desktop.Mapping.TinSimpleRendererDefinition
            ArcGIS.Desktop.Mapping.TerrainDirtyAreaRendererDefinition

Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3.2 or higher.
See Also