ArcObjects Library Reference (Geometry)

CircularArc CoClass

A portion of a circle that connects two points optionally has measure, height and ID attributes at each endpoint.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Description

A CircularArc is an object that describes a portion of a circle or a complete circle. In geometric terms, a CircularArc is a special case of an EllipticArc, where the major and minor axes are equal. Consequently, every point on the arc is equidistant from the CenterPoint, this distance being the Radius.

Supported Platforms

Windows, Solaris, Linux

Extended Error Information

Use the ISupportErrorInfo method InterfaceSupportsErrorInfo to determine if the object supports extended error information. If the object supports extended error info, VC++ developers should use the OLE/COM IErrorInfo interface to access the ErrorInfo object. Visual Basic developers should use the global error object Err to retrieve this extended error information.

Interfaces

Interfaces	Description
ICircularArc	Provides access to members that control properties of circular arcs.
IClone (esriSystem)	Provides access to members that control cloning of objects.
IConstructCircularArc	Provides access to members that construct a circular arc using other geometries and values.
IConstructCircularArc2	Provides access to members that construct a circular arc using other geometries and values.
ICurve	Provides access to properties and methods of all 1 dimensional curves (polylines, segments, boundaries of polygons, etc.).
ICurve2	Provides access to members that extend the functionality of one dimensional curves.
ICurve3	Provides access to members that extend the functionality of one dimensional curves.
IGeometry	Provides access to members that describe properties and behavior of all geometric objects.
IProximityOperator	Provides access to members that find the 2D distance between two geometries.
ISegment	Provides access to members that identify a segment. A segment is a way of getting between two endpoints.
ISegmentID	Provides access to members that allow simple manipulations of IDs at the segment level.
ISegmentM	Provides access to members that allow simple manipulations of Ms at the segment level.
ISegmentZ	Provides access to members that allow simple manipulations of Zs at the segment level.
ISupportErrorInfo	Indicates whether a specific interface can return Automation error objects.
ITransform2D	Provides access to methods for transforming geometries using either specific parameters or arbitrary transformation objects (affine transformations, geographic transformations, etc.).