QGpCoreTools::Ellipse Class Reference

Brief description of class still missing. More...

#include <Ellipse.h>

List of all members.

Public Member Functions
const Point2D &	center () const
	Ellipse ()
	Ellipse (const Point2D &c, double rmaj, double rmin=0.0, double orientation=0.0)
	Ellipse (const Ellipse &o)
double	majorRadius () const
double	minorRadius () const
const Angle &	orientation () const
void	setCenter (const Point2D &c)
void	setMajorRadius (double r)
void	setMinorRadius (double r)
void	setOrientation (double o)
QString	toString () const
double	xRadius () const
double	yRadius () const
	~Ellipse ()

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Detailed Description

Brief description of class still missing.

Full description of class still missing

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Constructor & Destructor Documentation

QGpCoreTools::Ellipse::Ellipse

(

)

Default constructor

  {
    _majorRadius=0.0;
    _minorRadius=0.0;
  }

QGpCoreTools::Ellipse::Ellipse	(	const Point2D &	c,
		double	rmaj,
		double	rmin = 0.0,
		double	orientation = 0.0
	)

QGpCoreTools::Ellipse::Ellipse

(

const Ellipse &

o

)

Copy constructor

  {
    _center=o._center;
    _majorRadius=o._majorRadius;
    _minorRadius=o._minorRadius;
    _orientation=o._orientation;
  }

QGpCoreTools::Ellipse::~Ellipse

(

)

[inline]

{}

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Member Function Documentation

const Point2D& QGpCoreTools::Ellipse::center

(

)

const [inline]

Referenced by SciFigs::CircleMask::boundingRect(), SciFigs::CircleViewer::boundingRect(), SciFigs::CircleMask::paintData(), SciFigs::CircleViewer::paintData(), SciFigs::CircleViewer::Limits::polarLimits(), and SciFigs::CircleViewer::xml_writeProperties().

{return _center;}

double QGpCoreTools::Ellipse::majorRadius

(

)

const [inline]

Referenced by SciFigs::CircleMask::paintData(), SciFigs::CircleViewer::paintData(), SciFigs::CircleViewer::Limits::polarLimits(), and SciFigs::CircleViewer::xml_writeProperties().

{return _majorRadius;}

double QGpCoreTools::Ellipse::minorRadius

(

)

const [inline]

Referenced by SciFigs::CircleMask::paintData(), SciFigs::CircleViewer::paintData(), and SciFigs::CircleViewer::xml_writeProperties().

{return _minorRadius;}

const Angle& QGpCoreTools::Ellipse::orientation

(

)

const [inline]

Referenced by SciFigs::CircleViewer::paintData(), and SciFigs::CircleViewer::xml_writeProperties().

{return _orientation;}

void QGpCoreTools::Ellipse::setCenter

(

const Point2D &

c

)

[inline]

Referenced by SciFigs::CircleViewer::add(), SciFigs::CircleViewer::insert(), SciFigs::CircleViewer::set(), and QGpCoreTools::Covariance::stddev2D().

{_center=c;}

void QGpCoreTools::Ellipse::setMajorRadius

(

double

r

)

[inline]

Referenced by SciFigs::CircleViewer::add(), SciFigs::CircleViewer::insert(), SciFigs::CircleViewer::set(), and QGpCoreTools::Covariance::stddev2D().

{_majorRadius=fabs(r);}

void QGpCoreTools::Ellipse::setMinorRadius

(

double

r

)

[inline]

Referenced by SciFigs::CircleViewer::add(), SciFigs::CircleViewer::insert(), SciFigs::CircleViewer::set(), and QGpCoreTools::Covariance::stddev2D().

{_minorRadius=fabs(r);}

void QGpCoreTools::Ellipse::setOrientation

(

double

o

)

References QGpCoreTools::Angle::initDegrees(), and QGpCoreTools::Angle::setRadians().

Referenced by SciFigs::CircleViewer::add(), SciFigs::CircleViewer::insert(), SciFigs::CircleViewer::set(), and QGpCoreTools::Covariance::stddev2D().

  {
    _orientation.setRadians(o);
    _orientation.initDegrees();
  }

QString QGpCoreTools::Ellipse::toString

(

)

const

References QGpCoreTools::Angle::degrees(), and QGpCoreTools::Point2D::toString().

Referenced by CoordReader::terminate().

  {
    return QString("%1 %2 %3 %4").arg(_center.toString())
        .arg(_majorRadius).arg(_minorRadius).arg(_orientation.degrees());
  }

double QGpCoreTools::Ellipse::xRadius

(

)

const

Returns the radii projected along X axis.

References QGpCoreTools::Angle::cos(), QGpCoreTools::cos(), QGpCoreTools::Angle::sin(), QGpCoreTools::sin(), and QGpCoreTools::Angle::tan().

Referenced by SciFigs::CircleMask::boundingRect(), and SciFigs::CircleViewer::boundingRect().

  {
    /* Parametric form of the ellipse:
       X(t)=Xc+a*cos(t)*cos(phi)-b*sin(t)*sin(phi)
       The xRadius is the maximum X
       X'(t)=-a*sin(t)*cos(phi)-b*cos(t)*sin(phi)=0
          tan(t)=-b*tan(phi)/a
    */
    if(_majorRadius>0.0) {
      double t=atan(-_minorRadius/_majorRadius*_orientation.tan());
      return fabs(_majorRadius*cos(t)*_orientation.cos()-_minorRadius*sin(t)*_orientation.sin());
    } else {
      return 0.0;
    }
  }

double QGpCoreTools::Ellipse::yRadius

(

)

const

Returns the radii projected along Y axis.

References QGpCoreTools::Angle::cos(), QGpCoreTools::cos(), QGpCoreTools::Angle::radians(), QGpCoreTools::Angle::sin(), QGpCoreTools::sin(), and QGpCoreTools::Angle::tan().

Referenced by SciFigs::CircleMask::boundingRect(), and SciFigs::CircleViewer::boundingRect().

  {
    /* Parametric form of the ellipse:
       Y(t)=Yc+a*cos(t)*sin(phi)+b*sin(t)*cos(phi)
       The yRadius is the maximum Y
       Y'(t)=-a*sin(t)*sin(phi)+b*cos(t)*cos(phi)=0
          tan(t)=b/(a*tan(phi))
    */
    if(_majorRadius>0.0) {
      if(_orientation.radians()!=0.0) {
        double t=atan(_minorRadius/(_majorRadius*_orientation.tan()));
        return fabs(_majorRadius*cos(t)*_orientation.sin()+_minorRadius*sin(t)*_orientation.cos());
      } else {
        return _minorRadius;
      }
    } else {
      return 0.0;
    }
  }

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The documentation for this class was generated from the following files:

• QGpCoreTools/Ellipse.h
• QGpCoreTools/Ellipse.cpp