AreaOfUse Class

Inherits from

GEOCALCPBW_NAMESPACE::Serializable

Description

The AreaOfUse class represents the valid area of use for a given coordinate reference system or coordinate transformation. In prior versions of the GeoCalc library, this object was referred to as an Envelope, and contained minimum and maximum extent points defined in the WGS84 Geodetic coordinate system. With the updates to version 7.0, an optional polygon data component has been added to the class architecture. The point definitions for both the polygon and extent points are always specified in two dimensions using WGS84 Geodetic points.

Each CoordSys, and CoordTransform type contains an AreaOfUse object that can be used to limit the availability of objects based on the geographic area of a given dataset. It is also possible to use this object to do basic contains queries using the InBounds() method. For additional information about disabling polygon and MBR area checks inside of a GeoCalc application, please see the SetIgnorePolygonAreaOfUse() and SetIgnoreAreaOfUse() methods on the Datasource.

Public Constructors

Constructor	Description
CreateAreaOfUse	Creates a new instance of the AreaOfUse class
AreaOfUse	Creates a new instance of the AreaOfUse class

Public Methods

Method	Description
DeepCopy	Produces a deep-copy of an Envelope
get_AlwaysAccept	Indicates whether the InBounds method should always return true
get_MaxPoint	Returns the CoordPoint that defines the upper bound of this AreaOfUse
get_MinPoint	Returns the CoordPoint that defines the lower bound of this AreaOfUse
InBounds	Indicates whether the specified CoordPoint is within this AreaOfUse
set_AlwaysAccept	Sets whether the InBounds method should always return true
set_MaxPoint	Sets the CoordPoint that defines the upper bound of this AreaOfUse
set_MinPoint	Sets the CoordPoint that defines the lower bound of this AreaOfUse
ValueEquals	Compares the value of two AreaOfUse objects
get_HasPolygonDefintion	Indicates whether the current AreaOfUse contains a polygon definition
get_AOUCode	Returns the AOU code used to provide access to the current polygon data
GetCenter	Returns the center point of the current extent MBR for this AreaOfUse
GetBounds	Returns the minimum and maximum extents for the current object as Geodetic WGS84 values

Overloaded Operators

Operator	Description
operator=	Assigns a new value to this AreaOfUse
operator==	Compares the value of two AreaOfUse objects
operator!=	Compares the value of two AreaOfUse objects