luciad::ObservableEllipseUtil Class Reference

This class provides utility methods for Observable instance for Ellipse. More...

#include <luciad/geometries/observable/ObservableEllipseUtil.h>

Public Member Functions
	ObservableEllipseUtil ()=delete

Static Public Member Functions
static std::shared_ptr< Observable< std::shared_ptr< Point > > >	deriveCenter (const std::shared_ptr< Observable< std::shared_ptr< Ellipse > > > &observableEllipse)
	Derives an Observable Point from the given observable ellipse that represents the center point. More...
static std::shared_ptr< Observable< std::shared_ptr< Point > > >	derivePointAtAngle (const std::shared_ptr< Observable< std::shared_ptr< Ellipse > > > &observableEllipse, Angle angle)
	Derives an Observable Point from the given observable ellipse that represents the point at the given angle. More...

Detailed Description

This class provides utility methods for Observable instance for Ellipse.

Since

2020.1

Constructor & Destructor Documentation

ObservableEllipseUtil()

luciad::ObservableEllipseUtil::ObservableEllipseUtil ( )

delete

Member Function Documentation

deriveCenter()

static std::shared_ptr< Observable< std::shared_ptr< Point > > > luciad::ObservableEllipseUtil::deriveCenter ( const std::shared_ptr< Observable< std::shared_ptr< Ellipse > > > &  observableEllipse )

static

Derives an Observable Point from the given observable ellipse that represents the center point.

This observable point will be updated when the given observable ellipse changes.

Notes:

• When the observable ellipse contains a nullptr value, the observable center point instance will contain a nullptr value too.
• Observable::setValue will throw an exception for derived instances.

Parameters

observableEllipse

an observable ellipse from which to derive the center

Returns

a derived Observable

derivePointAtAngle()

static std::shared_ptr< Observable< std::shared_ptr< Point > > > luciad::ObservableEllipseUtil::derivePointAtAngle ( const std::shared_ptr< Observable< std::shared_ptr< Ellipse > > > &  observableEllipse, Angle  angle  )

static

Derives an Observable Point from the given observable ellipse that represents the point at the given angle.

This observable point will be updated when the given observable ellipse changes.

Notes:

• When the observable ellipse contains a nullptr value, the observable point instance will contain a nullptr value too.
• Observable::setValue will throw an exception for derived instances.

Parameters

observableEllipse	an observable ellipse from which to derive the point
angle	the angle at which to derive the point. For example: an angle of 0 will result in the point on the right of the major axis. An angle of 90 will result in the point a the top of the minor axis.

Returns

a derived Observable