QxrdFitterRingEllipse Class Reference

#include <qxrdfitterringellipse.h>

Inheritance diagram for QxrdFitterRingEllipse:

Collaboration diagram for QxrdFitterRingEllipse:

Public Member Functions
	QxrdFitterRingEllipse (QxrdCenterFinder *cf, int ringIndex, double x0, double y0)
	QxrdFitterRingEllipse ()
int	fit ()
int	ringIndex () const
double	x0 () const
double	y0 () const
double	fittedX () const
double	fittedY () const
double	fittedA () const
double	fittedB () const
double	fittedRot () const
Public Member Functions inherited from QxrdFitter
	QxrdFitter (QxrdCenterFinder *cf)
	QxrdFitter ()
QxrdCenterFinder *	cf () const
FitResult	reason () const
QString	reasonString () const

Protected Attributes
int	m_RingIndex
double	m_X0
double	m_Y0
double	m_FittedX
double	m_FittedY
double	m_FittedA
double	m_FittedB
double	m_FittedRot
Protected Attributes inherited from QxrdFitter
QxrdCenterFinder *	m_CenterFinder
FitResult	m_Reason

Private Member Functions
void	evaluate (double *parm, double *xv, int np, int nx)

Static Private Member Functions
static void	staticEvaluate (double *parm, double *xv, int np, int nx, void *adata)

Additional Inherited Members
Public Types inherited from QxrdFitter
enum	FitResult {   Successful, NoResult, OutsideData, BadWidth,   BadPosition, BadHeight, LastReason }
Static Public Member Functions inherited from QxrdFitter
static QString	reasonString (FitResult i)

Detailed Description

Definition at line 6 of file qxrdfitterringellipse.h.

Constructor & Destructor Documentation

QxrdFitterRingEllipse::QxrdFitterRingEllipse	(	QxrdCenterFinder *	cf,
		int	ringIndex,
		double	x0,
		double	y0
	)

Definition at line 14 of file qxrdfitterringellipse.cpp.

                                                                                                      :
  QxrdFitter(cf),
  m_RingIndex(ringIndex),
  m_X0(x0),
  m_Y0(y0),
  m_FittedX(0),
  m_FittedY(0),
  m_FittedA(0),
  m_FittedB(0),
  m_FittedRot(0)
{
}

QxrdFitterRingEllipse::QxrdFitterRingEllipse

(

)

Definition at line 27 of file qxrdfitterringellipse.cpp.

                                             :
  QxrdFitter(NULL),
  m_RingIndex(0),
  m_X0(0),
  m_Y0(0),
  m_FittedX(0),
  m_FittedY(0),
  m_FittedA(0),
  m_FittedB(0),
  m_FittedRot(0)
{
}

Member Function Documentation

void QxrdFitterRingEllipse::evaluate ( double *  parm, double *  xv, int  np, int  nx  )

private

Definition at line 49 of file qxrdfitterringellipse.cpp.

References QxrdFitter::m_CenterFinder, m_RingIndex, QxrdCenterFinder::powderRingPoint(), QxrdPowderPoint::x(), and QxrdPowderPoint::y().

Referenced by staticEvaluate().

{
  if (m_CenterFinder) {
    double cx = parm[0];
    double cy = parm[1];
    double a  = parm[2];
    double b  = parm[3];
    double az = parm[4];

    double cosaz = cos(az);
    double sinaz = sin(az);

    for (int i=0; i<nx; i++) {
      QxrdPowderPoint pt = m_CenterFinder->powderRingPoint(m_RingIndex, i);

      double ptaz = atan2(pt.y() - cy, pt.x() - cx) - az;

      double x = cx + a*cos(ptaz);
      double y = cy + b*sin(ptaz);

      double xp = x*cosaz - y*sinaz;
      double yp = x*sinaz + y*cosaz;

      double dx = xp - pt.x();
      double dy = yp - pt.y();

      xv[i] = sqrt(dx*dx + dy*dy);
    }
  }
}

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int QxrdFitterRingEllipse::fit ( )

virtual

Implements QxrdFitter.

Definition at line 80 of file qxrdfitterringellipse.cpp.

References QxrdCenterFinder::countPowderRingPoints(), QxrdFitter::m_CenterFinder, m_FittedA, m_FittedB, m_FittedRot, m_FittedX, m_FittedY, QxrdFitter::m_Reason, m_RingIndex, m_X0, m_Y0, QxrdFitter::NoResult, QxrdCenterFinder::powderRingPoint(), staticEvaluate(), QxrdFitter::Successful, QxrdPowderPoint::x(), and QxrdPowderPoint::y().

Referenced by QxrdCenterFinder::fitPowderEllipse(), and QxrdCenterFinder::fitPowderEllipses().

{
  int niter = -1;

  if (m_CenterFinder) {
    int npts  = m_CenterFinder->countPowderRingPoints(m_RingIndex);
    double rsum = 0;

    for (int i=0; i<npts; i++) {
      QxrdPowderPoint pt = m_CenterFinder->powderRingPoint(m_RingIndex, i);

      double dx = pt.x() - m_X0;
      double dy = pt.y() - m_Y0;

      rsum += sqrt(dx*dx + dy*dy);
    }

    double parms[5];
    double info[LM_INFO_SZ];

    parms[0] = m_X0;
    parms[1] = m_Y0;
    parms[2] = rsum/npts;
    parms[3] = rsum/npts;
    parms[4] = 0;

    niter = dlevmar_dif(QxrdFitterRingEllipse::staticEvaluate,
                        parms, NULL, 5, npts,
                        m_CenterFinder->get_PeakFitIterations(),
                        NULL, info, NULL, NULL, this);

    if (niter > 0) {
      m_Reason    = Successful;
      m_FittedX   = parms[0];
      m_FittedY   = parms[1];
      m_FittedA   = parms[2];
      m_FittedB   = parms[3];
      m_FittedRot = parms[4];
    } else {
      m_Reason    = NoResult;
    }
  }

  return niter;
}

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double QxrdFitterRingEllipse::fittedA ( ) const

inline

Definition at line 19 of file qxrdfitterringellipse.h.

References m_FittedA.

Referenced by QxrdCenterFinder::fitPowderEllipse(), and QxrdCenterFinder::fitPowderEllipses().

{ return m_FittedA; }

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double QxrdFitterRingEllipse::fittedB ( ) const

inline

Definition at line 20 of file qxrdfitterringellipse.h.

References m_FittedB.

Referenced by QxrdCenterFinder::fitPowderEllipse(), and QxrdCenterFinder::fitPowderEllipses().

{ return m_FittedB; }

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double QxrdFitterRingEllipse::fittedRot ( ) const

inline

Definition at line 21 of file qxrdfitterringellipse.h.

References m_FittedRot.

Referenced by QxrdCenterFinder::fitPowderEllipse(), and QxrdCenterFinder::fitPowderEllipses().

{ return m_FittedRot; }

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double QxrdFitterRingEllipse::fittedX ( ) const

inline

Definition at line 17 of file qxrdfitterringellipse.h.

References m_FittedX.

Referenced by QxrdCenterFinder::fitPowderEllipse(), and QxrdCenterFinder::fitPowderEllipses().

{ return m_FittedX; }

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double QxrdFitterRingEllipse::fittedY ( ) const

inline

Definition at line 18 of file qxrdfitterringellipse.h.

References m_FittedY.

Referenced by QxrdCenterFinder::fitPowderEllipse(), and QxrdCenterFinder::fitPowderEllipses().

{ return m_FittedY; }

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int QxrdFitterRingEllipse::ringIndex ( ) const

inline

Definition at line 14 of file qxrdfitterringellipse.h.

References m_RingIndex.

{ return m_RingIndex; }

void QxrdFitterRingEllipse::staticEvaluate ( double *  parm, double *  xv, int  np, int  nx, void *  adata  )

staticprivate

Definition at line 40 of file qxrdfitterringellipse.cpp.

References evaluate().

Referenced by fit().

{
  QxrdFitterRingEllipse *rf = (QxrdFitterRingEllipse*) adata;

  if (rf) {
    rf->evaluate(p,hx,m,n);
  }
}

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double QxrdFitterRingEllipse::x0 ( ) const

inline

Definition at line 15 of file qxrdfitterringellipse.h.

References m_X0.

{ return m_X0; }

double QxrdFitterRingEllipse::y0 ( ) const

inline

Definition at line 16 of file qxrdfitterringellipse.h.

References m_Y0.

{ return m_Y0; }

Member Data Documentation

double QxrdFitterRingEllipse::m_FittedA

protected

Definition at line 33 of file qxrdfitterringellipse.h.

Referenced by fit(), and fittedA().

double QxrdFitterRingEllipse::m_FittedB

protected

Definition at line 34 of file qxrdfitterringellipse.h.

Referenced by fit(), and fittedB().

double QxrdFitterRingEllipse::m_FittedRot

protected

Definition at line 35 of file qxrdfitterringellipse.h.

Referenced by fit(), and fittedRot().

double QxrdFitterRingEllipse::m_FittedX

protected

Definition at line 31 of file qxrdfitterringellipse.h.

Referenced by fit(), and fittedX().

double QxrdFitterRingEllipse::m_FittedY

protected

Definition at line 32 of file qxrdfitterringellipse.h.

Referenced by fit(), and fittedY().

int QxrdFitterRingEllipse::m_RingIndex

protected

Definition at line 28 of file qxrdfitterringellipse.h.

Referenced by evaluate(), fit(), and ringIndex().

double QxrdFitterRingEllipse::m_X0

protected

Definition at line 29 of file qxrdfitterringellipse.h.

Referenced by fit(), and x0().

double QxrdFitterRingEllipse::m_Y0

protected

Definition at line 30 of file qxrdfitterringellipse.h.

Referenced by fit(), and y0().

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

• qxrdfitterringellipse.h (Commit a65ccc9... : jennings : 2016-03-15 14:00:18 -0500)
• qxrdfitterringellipse.cpp (Commit a65ccc9... : jennings : 2016-03-15 14:00:18 -0500)