//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);