Surface Class

The base class for TIN and grid surfaces and volume surfaces. This class exposes the methods and properties common to TIN and grid surfaces,

Inheritance Hierarchy

SystemObject
  SystemMarshalByRefObject
    DisposableWrapper
      RXObject
        Drawable
          DBObject
            Entity
              Curve
                Entity
                  Autodesk.Civil.DatabaseServicesEntity
                    Autodesk.Civil.DatabaseServicesSurface
                      Autodesk.Civil.DatabaseServicesGridSurface
                      Autodesk.Civil.DatabaseServicesGridVolumeSurface
                      Autodesk.Civil.DatabaseServicesTinSurface
                      Autodesk.Civil.DatabaseServicesTinVolumeSurface

Namespace: Autodesk.Civil.DatabaseServices
Assembly: AeccDbMgd (in AeccDbMgd.dll) Version: 13.7.0.1276

Syntax

C#

public class Surface : Entity

VB

Public Class Surface
	Inherits Entity

C++

public ref class Surface : public Entity

The Surface type exposes the following members.

Properties

	Name	Description
	Analysis	Gets a SurfaceAnalysis object that exposes the surface analysis properties for the Surface.
	Application	Gets the Application. Not currently implemented. (Inherited from Entity)
	AutoRebuild	Gets or sets whether to rebuild the surface when surface definition is changed.
	BoundariesDefinition	Gets the collection of boundaries associated with the Surface.
	BuildOptions	Gets an object that encapsulates options applied to building or re-building a Surface.
	Description	Gets or sets the Entity object's description. (Inherited from Entity)
	DisplayName	Gets the Entity object's display name. (Inherited from Entity)
	Document	Gets the Document. Not currently implemented. (Inherited from Entity)
	FingerPrint	Gets or sets FingerPrint of the Entity. (Inherited from Entity)
	FolderId	Gets the folder ObjectId of the Entity Returns ObjectId::Null if the Entity is located in root folder (Inherited from Entity)
	HasSnapshot	Gets a boolean value that specifies whether the surface has a snapshot.
	IsCWSReferenceObject	Gets whether the Entity is a Civil Worksharing reference object. A Civil Worksharing reference object is a Civil object shared to Shared Space. It is not editable. But it can be updated to the new version in the Shared Space. (Inherited from Entity)
	IsCWSSourceObject	Gets whether the Entity is a Civil Worksharing source object. A Civil Worksharing source object is a Civil object shared to Shared Space. It is editable and can be updated to Shared Space. (Inherited from Entity)
	IsLevelOfDetailEnabled	Gets or sets whether to reduced level of Detail.
	IsOutOfDate	Gets whether this surface is out-of-date.
	IsReadOnlyReferenceObject	Gets whether the Entity is a readonly reference object. A readonly reference object is either a data shortcut referece object or a Civil Worksharing reference object. (Inherited from Entity)
	IsReferencedSourceExisting	For reference object (IsReferenceObject == true), it will try to get its source entity while opening a drawing. This indicates whether the reference object has source entity. (Inherited from Entity)
	IsReferenceObject	Gets whether the Entity is a reference object. A reference object is located in another drawing, and linked using a data shortcut or Vault. If the entity is native to the current drawing this property returns false; if it is being referenced via data shortcuts or AutoCAD Vault it returns true. (Inherited from Entity)
	IsReferenceStale	For reference objects (IsReferenceObject == true), gets whether the Entity object's reference is stale. (Inherited from Entity)
	IsReferenceSubObject	For reference objects (IsReferenceObject == true), gets whether the Entity is a reference subobject. For example, when iterating through the structure of a pipe network referenced from another drawing, this property is true for each entity. (Inherited from Entity)
	IsReferenceValid	For reference objects (IsReferenceObject == true), gets whether the Entity object's reference is valid. (Inherited from Entity)
	IsSnapshotOutOfDate	Gets whether the snapshot in the surface is out-of-date.
	IsUsed	Gets whether the style is used by other objects in the current drawing. (Inherited from Entity)
	IsVolumeSurface	Gets whether the surface is a volume surface.
	Lock	Gets or sets whether the Civil 3D GUI shows this surface as locked.
	Masks	Gets all the masks in the Surface.
	Name	Gets or sets the Entity object's name. (Inherited from Entity)
	Operations	Gets the operation list for the Surface.
	ShowToolTip	Gets or sets whether to show tooltips for the Entity. (Inherited from Entity)
	StyleId	Sets the Surface's style Id. (Overrides EntityStyleId)
	StyleName	Gets or sets the Entity object's style name. (Inherited from Entity)

Methods

	Name	Description
	ComputeFingerPrint	Compute FingerPrint of the Entity. (Inherited from Entity)
	CreateSnapshot	Creates a snapshot that contains the current state of points and triangles resulting from previous Surface operations. A snapshot can improve the performance of Surface builds from subsequent operations.
	ExportToDEM(String, String, Double, ExportDetermineElevationType)	Exports the Surface to a DEM file.
	ExportToDEM(String, String, Double, ExportDetermineElevationType, Boolean, Single)	Exports the surface to a DEM file, with an optional custom value for null elevation.
	FindDirectionAtXY	Gets the direction of the Surface at the specified location (x, y).
	FindElevationAtXY	Gets the elevation of the Surface at the specified location (x, y).
	FindPointsAlongLine	Gets the points on the surface along the specified line segment.
	FindSlopeAtXY	Gets the slope of the Surface at the specified location (x, y).
	GetBoundedVolumes(Point3dCollection)	Calculates the volume of an area defined by several points.
	GetBoundedVolumes(Point3dCollection, Double)	Calculate the volume of an area defined by several points.
	GetGeneralProperties	Gets the general properties of the surface.
	GetIntersectionPoint	Gets the intersection point with surface by the specified point and vector.
	GetReferenceInfo	For Data Shortcut reference entity (IsReferenceObject == true), gets the entity's reference information. (Inherited from Entity)
	Rebuild	Rebuilds the surface by processing all the operations one by one in the list.
	RebuildSnapshot	Rebuilds the snapshot for the surface.
	RemoveSnapshot	Removes the existing snapshot for the surface.

Remarks

A surface is a three-dimensional geometric representation of an area of land, or, in the case of volume surfaces, is a difference or composite between two surface areas. A surface can be made up of triangles (TIN) or grids, which are created when the points that make up the surface data are connected.

Surface Class

Inheritance Hierarchy

Syntax

C#

VB

C++

Properties

Methods

Remarks

See Also

Reference

Was this information helpful?