SurfaceDefinitionContours.AddContours(ObjectIdCollection, Double, Double, Double, Double) Method

Adds contours to a surface from entities in an ObjectIdCollection.

Namespace: Autodesk.Civil.DatabaseServices
Assembly: AeccDbMgd (in AeccDbMgd.dll) Version: 13.8.0.280

Syntax

C#

public SurfaceOperationAddContour AddContours(
	ObjectIdCollection boundaryEntities,
	double midOrdinateDistance,
	double maximumDistance,
	double weedingDistance,
	double weedingAngle
)

VB

Public Function AddContours ( 
	boundaryEntities As ObjectIdCollection,
	midOrdinateDistance As Double,
	maximumDistance As Double,
	weedingDistance As Double,
	weedingAngle As Double
) As SurfaceOperationAddContour

C++

public:
SurfaceOperationAddContour^ AddContours(
	ObjectIdCollection^ boundaryEntities, 
	double midOrdinateDistance, 
	double maximumDistance, 
	double weedingDistance, 
	double weedingAngle
)

Parameters

boundaryEntities ObjectIdCollection: A collection of ObjectIds used to create contours.
midOrdinateDistance Double: When the contour is defined from a polyline with curves, the midOrdinateDistance value is used to tessellate the arcs in the polyline.
maximumDistance Double: Specifies the maximum distance between vertices. If the distance between vertices on a contour is greater than the maximumDistance, then points are added along the contour at equal intervals that are less than or equal to the maximumDistance.
weedingDistance Double: The distance value for the weeding factor.
weedingAngle Double: The angle value for the weeding factor.

Return Value

SurfaceOperationAddContour

Exceptions

Exception	Condition
ArgumentException	Thrown when: There are invalid ObjectIds in contourEntities. midOrdinateDistance <= 0.0, maximumDistance < 0.0, weedingDistance < 0.0 or weedingDistance >= maximumDistance

Remarks

The weeding factors ignore both vertices that are closer together than the distance factor and vertices that deflect less than the angle factor.

Example

 1/// <summary>
 2/// Illustrates creating contours
 3/// </summary>
 4[CommandMethod("CreateContour")]
 5public void CreateContour()
 6{
 7    using (Transaction ts = Application.DocumentManager.MdiActiveDocument.Database.TransactionManager.StartTransaction())
 8    {
 9        // Prompt the user to select a TIN surface and a polyline, and create a contour from the polyline
10        ObjectId surfaceId = promptForEntity("Select a TIN surface to add a contour to", typeof(TinSurface));
11        ObjectId polyId = promptForEntity("Select a polyline to create a contour from", typeof(Polyline));
12        TinSurface oSurface = surfaceId.GetObject(OpenMode.ForWrite) as TinSurface;
13        ObjectId[] contours = { polyId };
14
15        oSurface.ContoursDefinition.AddContours(new ObjectIdCollection(contours), 1, 85.5, 55.5, 0);
16
17        // commit the transaction
18        ts.Commit();
19    }
20}