EllipseBoundary Class Reference

#include "AreaBoundary.h"

Inheritance diagram for EllipseBoundary:

Public Member Functions
	EllipseBoundary (Position const &center, double radiusX, double radiusY, bool isInverted=false)
Public Member Functions inherited from AreaBoundary
bool	IsWithinBoundary (Position const *pos) const
bool	IsWithinBoundary (Position const &pos) const
virtual	~AreaBoundary ()

Protected Member Functions
bool	IsWithinBoundaryArea (Position const *pos) const override
Protected Member Functions inherited from AreaBoundary
	AreaBoundary (bool isInverted)
virtual bool	IsWithinBoundaryArea (Position const *pos) const =0

Private Attributes
DoublePosition const	_center
double const	_radiusYSq
double const	_scaleXSq

Detailed Description

Constructor & Destructor Documentation

EllipseBoundary()

EllipseBoundary::EllipseBoundary	(	Position const &	center,
		double	radiusX,
		double	radiusY,
		bool	isInverted = false
	)

                                                                                                        :
    AreaBoundary(isInverted), _center(center), _radiusYSq(radiusY*radiusY), _scaleXSq(_radiusYSq / (radiusX*radiusX)) { }

Member Function Documentation

IsWithinBoundaryArea()

bool EllipseBoundary::IsWithinBoundaryArea ( Position const *  pos ) const

overrideprotectedvirtual

Implements AreaBoundary.

{
    double offX = _center.GetDoublePositionX() - pos->GetPositionX();
    double offY = _center.GetDoublePositionY() - pos->GetPositionY();
    return (offX*offX)*_scaleXSq + (offY*offY)  <=  _radiusYSq;
}

References _center, _radiusYSq, _scaleXSq, AreaBoundary::DoublePosition::GetDoublePositionX(), AreaBoundary::DoublePosition::GetDoublePositionY(), Position::GetPositionX(), and Position::GetPositionY().

Member Data Documentation

_center

DoublePosition const EllipseBoundary::_center

private

Referenced by IsWithinBoundaryArea().

_radiusYSq

double const EllipseBoundary::_radiusYSq

private

Referenced by IsWithinBoundaryArea().

_scaleXSq

double const EllipseBoundary::_scaleXSq

private

Referenced by IsWithinBoundaryArea().