Extracts the surface watershed information from the terrain surface.

Namespace: Autodesk.Civil.DatabaseServices
Assembly: AeccDbMgd (in AeccDbMgd.dll) Version: 13.4.2516.0

Syntax

C#
ObjectIdCollection ExtractWatershed(
	SurfaceExtractionSettingsType settingsType
)
Visual Basic
Function ExtractWatershed ( _
	settingsType As SurfaceExtractionSettingsType _
) As ObjectIdCollection
Visual C++
ObjectIdCollection^ ExtractWatershed(
	SurfaceExtractionSettingsType settingsType
)

Parameters

settingsType
Type: Autodesk.Civil..::..SurfaceExtractionSettingsType
Specify SurfaceExtractionSettingsType.Plan to extract the watershed information using the plan visual style settings, or SurfaceExtractionSettingsType.Model to use the model settings.

Return Value

An ObjectIdCollection of the extracted entities. The extracted entities can be Polyline3d or Hatch. If the surface has no watershed information, this method returns an empty ObjectIdCollection.

Examples

CopyC#
 1// This example requires an existing surface in the document                   
 2// that displays watershed data.  
 3// 
 4ObjectId surfaceId = _civildoc.GetSurfaceIds()[0];
 5TinSurface surface = surfaceId.GetObject(OpenMode.ForRead) as TinSurface;
 6
 7// Extract watershed data and print information about it:
 8// 
 9ObjectIdCollection watershedData;
10watershedData = surface.ExtractWatershed(SurfaceExtractionSettingsType.Plan);
11write("# of extracted data components: " + watershedData.Count + "\n");
12
13foreach (ObjectId dataId in watershedData)
14{
15    // Watershed components are either Polyline3d or Hatch objects:
16    // 
17    Polyline3d watershedLine = dataId.GetObject(OpenMode.ForRead) as Polyline3d;
18    if (watershedLine != null)
19    {
20        write(String.Format("Watershed line start:{0} end:{1}\n",
21            watershedLine.StartPoint.ToString(), watershedLine.EndPoint.ToString()));
22    }
23
24    Hatch watersheHatch = dataId.GetObject(OpenMode.ForRead) as Hatch;
25    if (watersheHatch != null)
26    {
27        write(String.Format("Watershed hatch area:{0} origin:{1}\n",
28            watersheHatch.Area, watersheHatch.Origin.ToString()));
29    }                        
30}
CopyVB.NET
1!ERROR: See log file!

See Also