lsst::afw::geom::ellipses::BaseCore Class Reference

A base class for parametrizations of the "core" of an ellipse - the ellipticity and size. More...

#include <BaseCore.h>

Inheritance diagram for lsst::afw::geom::ellipses::BaseCore:

Classes
struct	Converter
class	Convolution
	A temporary-only expression object for ellipse core convolution. More...
class	GridTransform
	A temporary-only expression object representing an lsst::geom::LinearTransform that maps the ellipse core to a unit circle. More...
struct	Registrar
class	Transformer
	A temporary-only expression object for ellipse core transformations. More...

Public Types
typedef Eigen::Vector3d	ParameterVector
	Parameter vector type. More...
typedef Eigen::Matrix3d	Jacobian
	Parameter Jacobian matrix type. More...

Public Member Functions
virtual std::string	getName () const =0
	Return a string that identifies this parametrization. More...
std::shared_ptr< BaseCore >	clone () const
	Deep-copy the Core. More...
virtual void	normalize ()=0
	Put the parameters into a "standard form", and throw InvalidParameterError if they cannot be normalized. More...
void	grow (double buffer)
	Increase the major and minor radii of the ellipse core by the given buffer. More...
void	scale (double factor)
	Scale the size of the ellipse core by the given factor. More...
double	getArea () const
	Return the area of the ellipse core. More...
double	getDeterminantRadius () const
	Return the radius defined as the 4th root of the determinant of the quadrupole matrix. More...
double	getTraceRadius () const
	Return the radius defined as the square root of one half the trace of the quadrupole matrix. More...
GridTransform const	getGridTransform () const
	Return the transform that maps the ellipse to the unit circle. More...
lsst::geom::Extent2D	computeDimensions () const
	Return the size of the bounding box for the ellipse core. More...
virtual void	readParameters (double const *iter)=0
virtual void	writeParameters (double *iter) const =0
ParameterVector const	getParameterVector () const
	Return the core parameters as a vector. More...
void	setParameterVector (ParameterVector const &vector)
	Set the core parameters from a vector. More...
bool	operator== (BaseCore const &other) const
	Compare two ellipse cores for equality. More...
bool	operator!= (BaseCore const &other) const
	Compare two ellipse cores for inequality. More...
BaseCore &	operator= (BaseCore const &other)
	Set the parameters of this ellipse core from another. More...
BaseCore &	operator= (BaseCore &&other)
Jacobian	dAssign (BaseCore const &other)
	Assign other to this and return the derivative of the conversion, d(this)/d(other). More...
template<typename Output >
Converter< Output >	as () const
	Convert this to the core type specified as a template parameter. More...
virtual	~BaseCore ()=default
Coordinate transforms
These member functions transform the ellipse by the given lsst::geom::LinearTransform. The transform can be done in-place by calling inPlace() on the returned expression object, or returned as a new shared_ptr by calling copy().
Transformer	transform (lsst::geom::LinearTransform const &transform)
Transformer const	transform (lsst::geom::LinearTransform const &transform) const
Convolve two bivariate Gaussians defined by their 1-sigma ellipses.
Convolution	convolve (BaseCore const &other)
Convolution const	convolve (BaseCore const &other) const

Static Public Member Functions
static std::shared_ptr< BaseCore >	make (std::string const &name)
static std::shared_ptr< BaseCore >	make (std::string const &name, ParameterVector const &parameters)
static std::shared_ptr< BaseCore >	make (std::string const &name, double v1, double v2, double v3)
static std::shared_ptr< BaseCore >	make (std::string const &name, BaseCore const &other)
static std::shared_ptr< BaseCore >	make (std::string const &name, Transformer const &other)
static std::shared_ptr< BaseCore >	make (std::string const &name, Convolution const &other)

Protected Member Functions
	BaseCore ()=default
virtual std::shared_ptr< BaseCore >	_clone () const =0
virtual void	_assignToQuadrupole (double &ixx, double &iyy, double &ixy) const =0
virtual void	_assignFromQuadrupole (double ixx, double iyy, double ixy)=0
virtual void	_assignToAxes (double &a, double &b, double &theta) const =0
virtual void	_assignFromAxes (double a, double b, double theta)=0
virtual Jacobian	_dAssignToQuadrupole (double &ixx, double &iyy, double &ixy) const =0
virtual Jacobian	_dAssignFromQuadrupole (double ixx, double iyy, double ixy)=0
virtual Jacobian	_dAssignToAxes (double &a, double &b, double &theta) const =0
virtual Jacobian	_dAssignFromAxes (double a, double b, double theta)=0

Static Protected Member Functions
static void	registerSubclass (std::shared_ptr< BaseCore > const &example)
static void	_assignQuadrupoleToAxes (double ixx, double iyy, double ixy, double &a, double &b, double &theta)
static Jacobian	_dAssignQuadrupoleToAxes (double ixx, double iyy, double ixy, double &a, double &b, double &theta)
static void	_assignAxesToQuadrupole (double a, double b, double theta, double &ixx, double &iyy, double &ixy)
static Jacobian	_dAssignAxesToQuadrupole (double a, double b, double theta, double &ixx, double &iyy, double &ixy)

Friends
class	Parametric

Detailed Description

A base class for parametrizations of the "core" of an ellipse - the ellipticity and size.

A subclass of BaseCore provides a particular interpretation of the three pointing point values that define an ellipse's size and ellipticity (including position angle). All core subclasses are implicitly convertible and can be assigned to from any other core.

Definition at line 55 of file BaseCore.h.

Member Typedef Documentation

Jacobian

typedef Eigen::Matrix3d lsst::afw::geom::ellipses::BaseCore::Jacobian

Parameter Jacobian matrix type.

Definition at line 64 of file BaseCore.h.

ParameterVector

typedef Eigen::Vector3d lsst::afw::geom::ellipses::BaseCore::ParameterVector

Parameter vector type.

Definition at line 61 of file BaseCore.h.

Constructor & Destructor Documentation

~BaseCore()

virtual lsst::afw::geom::ellipses::BaseCore::~BaseCore ( )

virtualdefault

BaseCore()

lsst::afw::geom::ellipses::BaseCore::BaseCore ( )

protecteddefault

Member Function Documentation

_assignAxesToQuadrupole()

void lsst::afw::geom::ellipses::BaseCore::_assignAxesToQuadrupole ( double  a, double  b, double  theta, double &  ixx, double &  iyy, double &  ixy  )

staticprotected

Definition at line 219 of file BaseCore.cc.

                                                    {
    a *= a;
    b *= b;
    double c = std::cos(theta);
    double s = std::sin(theta);
    ixy = (a - b) * c * s;
    c *= c;
    s *= s;
    ixx = c * a + s * b;
    iyy = s * a + c * b;
}

_assignFromAxes()

virtual void lsst::afw::geom::ellipses::BaseCore::_assignFromAxes ( double  a, double  b, double  theta  )

protectedpure virtual

Implemented in lsst::afw::geom::ellipses::Separable< Ellipticity_, Radius_ >, lsst::afw::geom::ellipses::Quadrupole, and lsst::afw::geom::ellipses::Axes.

_assignFromQuadrupole()

virtual void lsst::afw::geom::ellipses::BaseCore::_assignFromQuadrupole ( double  ixx, double  iyy, double  ixy  )

protectedpure virtual

Implemented in lsst::afw::geom::ellipses::Separable< Ellipticity_, Radius_ >, lsst::afw::geom::ellipses::Quadrupole, and lsst::afw::geom::ellipses::Axes.

_assignQuadrupoleToAxes()

void lsst::afw::geom::ellipses::BaseCore::_assignQuadrupoleToAxes ( double  ixx, double  iyy, double  ixy, double &  a, double &  b, double &  theta  )

staticprotected

Definition at line 184 of file BaseCore.cc.

                                                      {
    double xx_p_yy = ixx + iyy;
    double xx_m_yy = ixx - iyy;
    double t = std::sqrt(xx_m_yy * xx_m_yy + 4 * ixy * ixy);
    a = std::sqrt(0.5 * (xx_p_yy + t));
    b = std::sqrt(0.5 * (xx_p_yy - t));
    theta = 0.5 * std::atan2(2.0 * ixy, xx_m_yy);
}

_assignToAxes()

virtual void lsst::afw::geom::ellipses::BaseCore::_assignToAxes ( double &  a, double &  b, double &  theta  ) const

protectedpure virtual

Implemented in lsst::afw::geom::ellipses::Separable< Ellipticity_, Radius_ >, lsst::afw::geom::ellipses::Quadrupole, and lsst::afw::geom::ellipses::Axes.

_assignToQuadrupole()

virtual void lsst::afw::geom::ellipses::BaseCore::_assignToQuadrupole ( double &  ixx, double &  iyy, double &  ixy  ) const

protectedpure virtual

Implemented in lsst::afw::geom::ellipses::Separable< Ellipticity_, Radius_ >, lsst::afw::geom::ellipses::Quadrupole, and lsst::afw::geom::ellipses::Axes.

_clone()

virtual std::shared_ptr<BaseCore> lsst::afw::geom::ellipses::BaseCore::_clone ( ) const

protectedpure virtual

Implemented in lsst::afw::geom::ellipses::Separable< Ellipticity_, Radius_ >, lsst::afw::geom::ellipses::Quadrupole, and lsst::afw::geom::ellipses::Axes.

_dAssignAxesToQuadrupole()

BaseCore::Jacobian lsst::afw::geom::ellipses::BaseCore::_dAssignAxesToQuadrupole ( double  a, double  b, double  theta, double &  ixx, double &  iyy, double &  ixy  )

staticprotected

Definition at line 232 of file BaseCore.cc.

                                                                                {
    Jacobian m;
    m.col(0).setConstant(2 * a);
    m.col(1).setConstant(2 * b);
    a *= a;
    b *= b;
    m.col(2).setConstant(a - b);
    double c = std::cos(theta);
    double s = std::sin(theta);
    double cs = c * s;
    ixy = (a - b) * c * s;
    c *= c;
    s *= s;
    ixx = c * a + s * b;
    iyy = s * a + c * b;
    m(0, 0) *= c;
    m(0, 1) *= s;
    m(0, 2) *= -2.0 * cs;
    m(1, 0) *= s;
    m(1, 1) *= c;
    m(1, 2) *= 2.0 * cs;
    m(2, 0) *= cs;
    m(2, 1) *= -cs;
    m(2, 2) *= (c - s);
    return m;
}

_dAssignFromAxes()

virtual Jacobian lsst::afw::geom::ellipses::BaseCore::_dAssignFromAxes ( double  a, double  b, double  theta  )

protectedpure virtual

Implemented in lsst::afw::geom::ellipses::Separable< Ellipticity_, Radius_ >, lsst::afw::geom::ellipses::Quadrupole, and lsst::afw::geom::ellipses::Axes.

_dAssignFromQuadrupole()

virtual Jacobian lsst::afw::geom::ellipses::BaseCore::_dAssignFromQuadrupole ( double  ixx, double  iyy, double  ixy  )

protectedpure virtual

Implemented in lsst::afw::geom::ellipses::Separable< Ellipticity_, Radius_ >, lsst::afw::geom::ellipses::Quadrupole, and lsst::afw::geom::ellipses::Axes.

_dAssignQuadrupoleToAxes()

BaseCore::Jacobian lsst::afw::geom::ellipses::BaseCore::_dAssignQuadrupoleToAxes ( double  ixx, double  iyy, double  ixy, double &  a, double &  b, double &  theta  )

staticprotected

Definition at line 194 of file BaseCore.cc.

                                                                                {
    double xx_p_yy = ixx + iyy;
    double xx_m_yy = ixx - iyy;
    double t2 = xx_m_yy * xx_m_yy + 4.0 * ixy * ixy;
    Eigen::Vector3d dt2(2.0 * xx_m_yy, -2.0 * xx_m_yy, 8.0 * ixy);
    double t = std::sqrt(t2);
    a = std::sqrt(0.5 * (xx_p_yy + t));
    b = std::sqrt(0.5 * (xx_p_yy - t));
    theta = 0.5 * std::atan2(2.0 * ixy, xx_m_yy);
    Jacobian m = Jacobian::Zero();
    m(0, 0) = 0.25 * (1.0 + 0.5 * dt2[0] / t) / a;
    m(0, 1) = 0.25 * (1.0 + 0.5 * dt2[1] / t) / a;
    m(0, 2) = 0.25 * (0.5 * dt2[2] / t) / a;
    m(1, 0) = 0.25 * (1.0 - 0.5 * dt2[0] / t) / b;
    m(1, 1) = 0.25 * (1.0 - 0.5 * dt2[1] / t) / b;
    m(1, 2) = 0.25 * (-0.5 * dt2[2] / t) / b;

    m.row(2).setConstant(1.0 / (t * t));
    m(2, 0) *= -ixy;
    m(2, 1) *= ixy;
    m(2, 2) *= xx_m_yy;
    return m;
}

_dAssignToAxes()

virtual Jacobian lsst::afw::geom::ellipses::BaseCore::_dAssignToAxes ( double &  a, double &  b, double &  theta  ) const

protectedpure virtual

Implemented in lsst::afw::geom::ellipses::Separable< Ellipticity_, Radius_ >, lsst::afw::geom::ellipses::Quadrupole, and lsst::afw::geom::ellipses::Axes.

_dAssignToQuadrupole()

virtual Jacobian lsst::afw::geom::ellipses::BaseCore::_dAssignToQuadrupole ( double &  ixx, double &  iyy, double &  ixy  ) const

protectedpure virtual

Implemented in lsst::afw::geom::ellipses::Separable< Ellipticity_, Radius_ >, lsst::afw::geom::ellipses::Quadrupole, and lsst::afw::geom::ellipses::Axes.

as()

template<typename Output >

BaseCore::Converter< Output > lsst::afw::geom::ellipses::BaseCore::as ( ) const

inline

Convert this to the core type specified as a template parameter.

Definition at line 238 of file BaseCore.h.

                                                    {
    return Converter<Output>(*this);
}

clone()

std::shared_ptr<BaseCore> lsst::afw::geom::ellipses::BaseCore::clone ( ) const

inline

Deep-copy the Core.

Definition at line 82 of file BaseCore.h.

{ return _clone(); }

computeDimensions()

lsst::geom::Extent2D lsst::afw::geom::ellipses::BaseCore::computeDimensions

(

)

const

Return the size of the bounding box for the ellipse core.

Definition at line 130 of file BaseCore.cc.

                                                   {
    double a, b, theta;
    _assignToAxes(a, b, theta);
    double c = std::cos(theta);
    double s = std::sin(theta);
    c *= c;
    s *= s;
    b *= b;
    a *= a;
    lsst::geom::Extent2D dimensions(std::sqrt(b * s + a * c), std::sqrt(a * s + b * c));
    dimensions *= 2;
    return dimensions;
}

convolve() [1/2]

BaseCore::Convolution lsst::afw::geom::ellipses::BaseCore::convolve ( BaseCore const &  other )

inline

Definition at line 93 of file Convolution.h.

                                                                   {
    return BaseCore::Convolution(*this, other);
}

convolve() [2/2]

BaseCore::Convolution const lsst::afw::geom::ellipses::BaseCore::convolve ( BaseCore const &  other ) const

inline

Definition at line 97 of file Convolution.h.

                                                                               {
    return BaseCore::Convolution(const_cast<BaseCore &>(*this), other);
}

dAssign()

BaseCore::Jacobian lsst::afw::geom::ellipses::BaseCore::dAssign

(

BaseCore const &

other

)

Assign other to this and return the derivative of the conversion, d(this)/d(other).

Definition at line 169 of file BaseCore.cc.

                                                        {
    if (getName() == other.getName()) {
        this->operator=(other);
        return Jacobian::Identity();
    }
    // We use Quadrupole instead of Axes here because the ambiguity of the position angle
    // in the circular case causes some of the Jacobians to/from Axes to be undefined for
    // exact circles.  Quadrupoles don't have that problem, and the Axes-to-Axes case is
    // handled by the above if block.
    double ixx, iyy, ixy;
    Jacobian rhs = other._dAssignToQuadrupole(ixx, iyy, ixy);
    Jacobian lhs = _dAssignFromQuadrupole(ixx, iyy, ixy);
    return lhs * rhs;
}

getArea()

double lsst::afw::geom::ellipses::BaseCore::getArea

(

)

const

Return the area of the ellipse core.

Definition at line 112 of file BaseCore.cc.

                               {
    double a, b, theta;
    _assignToAxes(a, b, theta);
    return a * b * lsst::geom::PI;
}

getDeterminantRadius()

double lsst::afw::geom::ellipses::BaseCore::getDeterminantRadius

(

)

const

Return the radius defined as the 4th root of the determinant of the quadrupole matrix.

The determinant radius is equal to the standard radius for a circle, and its square times pi is the area of the ellipse.

Definition at line 118 of file BaseCore.cc.

                                            {
    double a, b, theta;
    _assignToAxes(a, b, theta);
    return std::sqrt(a * b);
}

getGridTransform()

BaseCore::GridTransform const lsst::afw::geom::ellipses::BaseCore::getGridTransform ( ) const

inline

Return the transform that maps the ellipse to the unit circle.

The returned proxy object is implicitly convertible to lsst::geom::LinearTransform and also supports differentiation.

Definition at line 120 of file GridTransform.h.

                                                                    {
    return BaseCore::GridTransform(*this);
}

getName()

virtual std::string lsst::afw::geom::ellipses::BaseCore::getName ( ) const

pure virtual

Return a string that identifies this parametrization.

Implemented in lsst::afw::geom::ellipses::Separable< Ellipticity_, Radius_ >, lsst::afw::geom::ellipses::Quadrupole, and lsst::afw::geom::ellipses::Axes.

getParameterVector()

BaseCore::ParameterVector const lsst::afw::geom::ellipses::BaseCore::getParameterVector

(

)

const

Return the core parameters as a vector.

Definition at line 144 of file BaseCore.cc.

                                                                 {
    ParameterVector r;
    writeParameters(r.data());
    return r;
}

getTraceRadius()

double lsst::afw::geom::ellipses::BaseCore::getTraceRadius

(

)

const

Return the radius defined as the square root of one half the trace of the quadrupole matrix.

The trace radius is equal to the standard radius for a circle.

Definition at line 124 of file BaseCore.cc.

                                      {
    double ixx, iyy, ixy;
    _assignToQuadrupole(ixx, iyy, ixy);
    return std::sqrt(0.5 * (ixx + iyy));
}

grow()

void lsst::afw::geom::ellipses::BaseCore::grow

(

double

buffer

)

Increase the major and minor radii of the ellipse core by the given buffer.

Definition at line 96 of file BaseCore.cc.

                                 {
    double a, b, theta;
    _assignToAxes(a, b, theta);
    a += buffer;
    b += buffer;
    _assignFromAxes(a, b, theta);
}

make() [1/6]

std::shared_ptr< BaseCore > lsst::afw::geom::ellipses::BaseCore::make ( std::string const &  name )

static

Definition at line 56 of file BaseCore.cc.

                                                            {
    std::shared_ptr<BaseCore> result = getRegistryCopy(name);
    *result = Quadrupole();
    return result;
}

make() [2/6]

std::shared_ptr< BaseCore > lsst::afw::geom::ellipses::BaseCore::make ( std::string const &  name, ParameterVector const &  parameters  )

static

Definition at line 62 of file BaseCore.cc.

                                                                                               {
    std::shared_ptr<BaseCore> result = getRegistryCopy(name);
    result->setParameterVector(parameters);
    return result;
}

make() [3/6]

std::shared_ptr< BaseCore > lsst::afw::geom::ellipses::BaseCore::make ( std::string const &  name, double  v1, double  v2, double  v3  )

static

Definition at line 68 of file BaseCore.cc.

                                                                                             {
    std::shared_ptr<BaseCore> result = getRegistryCopy(name);
    result->setParameterVector(ParameterVector(v1, v2, v3));
    return result;
}

make() [4/6]

std::shared_ptr< BaseCore > lsst::afw::geom::ellipses::BaseCore::make ( std::string const &  name, BaseCore const &  other  )

static

Definition at line 74 of file BaseCore.cc.

                                                                                   {
    std::shared_ptr<BaseCore> result = getRegistryCopy(name);
    *result = other;
    return result;
}

make() [5/6]

std::shared_ptr< BaseCore > lsst::afw::geom::ellipses::BaseCore::make ( std::string const &  name, Transformer const &  other  )

static

Definition at line 80 of file BaseCore.cc.

                                                                                      {
    std::shared_ptr<BaseCore> result = getRegistryCopy(name);
    other.apply(*result);
    return result;
}

make() [6/6]

std::shared_ptr< BaseCore > lsst::afw::geom::ellipses::BaseCore::make ( std::string const &  name, Convolution const &  other  )

static

Definition at line 86 of file BaseCore.cc.

                                                                                      {
    std::shared_ptr<BaseCore> result = getRegistryCopy(name);
    other.apply(*result);
    return result;
}

normalize()

virtual void lsst::afw::geom::ellipses::BaseCore::normalize ( )

pure virtual

Put the parameters into a "standard form", and throw InvalidParameterError if they cannot be normalized.

Implemented in lsst::afw::geom::ellipses::Separable< Ellipticity_, Radius_ >, lsst::afw::geom::ellipses::Quadrupole, and lsst::afw::geom::ellipses::Axes.

operator!=()

bool lsst::afw::geom::ellipses::BaseCore::operator!= ( BaseCore const &  other ) const

inline

Compare two ellipse cores for inequality.

Ellipses are only equal if they have the same type.

Definition at line 167 of file BaseCore.h.

{ return !operator==(other); }

operator=() [1/2]

BaseCore & lsst::afw::geom::ellipses::BaseCore::operator=

(

BaseCore const &

other

)

Set the parameters of this ellipse core from another.

This does not change the parametrization of the ellipse core.

Definition at line 156 of file BaseCore.cc.

                                                   {
    if (&other != this) {
        // We use Axes instead of Quadrupole here because it allows us to copy Axes without
        // implicitly normalizing them.
        double a, b, theta;
        other._assignToAxes(a, b, theta);
        _assignFromAxes(a, b, theta);
    }
    return *this;
}

operator=() [2/2]

BaseCore & lsst::afw::geom::ellipses::BaseCore::operator=

(

BaseCore &&

other

)

Definition at line 167 of file BaseCore.cc.

{ return *this = other; }

operator==()

bool lsst::afw::geom::ellipses::BaseCore::operator==

(

BaseCore const &

other

)

const

Compare two ellipse cores for equality.

Ellipse cores are only equal if they have the same type.

Definition at line 152 of file BaseCore.cc.

                                                     {
    return getParameterVector() == other.getParameterVector() && getName() == other.getName();
}

readParameters()

virtual void lsst::afw::geom::ellipses::BaseCore::readParameters ( double const *  iter )

pure virtual

Implemented in lsst::afw::geom::ellipses::Separable< Ellipticity_, Radius_ >, lsst::afw::geom::ellipses::Quadrupole, and lsst::afw::geom::ellipses::Axes.

registerSubclass()

void lsst::afw::geom::ellipses::BaseCore::registerSubclass ( std::shared_ptr< BaseCore > const &  example )

staticprotected

Definition at line 92 of file BaseCore.cc.

                                                                      {
    getRegistry()[example->getName()] = example;
}

scale()

void lsst::afw::geom::ellipses::BaseCore::scale

(

double

factor

)

Scale the size of the ellipse core by the given factor.

Definition at line 104 of file BaseCore.cc.

                                  {
    double a, b, theta;
    _assignToAxes(a, b, theta);
    a *= factor;
    b *= factor;
    _assignFromAxes(a, b, theta);
}

setParameterVector()

void lsst::afw::geom::ellipses::BaseCore::setParameterVector

(

ParameterVector const &

vector

)

Set the core parameters from a vector.

Definition at line 150 of file BaseCore.cc.

{ readParameters(p.data()); }

transform() [1/2]

BaseCore::Transformer lsst::afw::geom::ellipses::BaseCore::transform ( lsst::geom::LinearTransform const &  transform )

inline

Definition at line 116 of file Transformer.h.

                                                                                       {
    return BaseCore::Transformer(*this, transform);
}

transform() [2/2]

BaseCore::Transformer const lsst::afw::geom::ellipses::BaseCore::transform ( lsst::geom::LinearTransform const &  transform ) const

inline

Definition at line 120 of file Transformer.h.

                                                                                                   {
    return BaseCore::Transformer(const_cast<BaseCore &>(*this), transform);
}

writeParameters()

virtual void lsst::afw::geom::ellipses::BaseCore::writeParameters ( double *  iter ) const

pure virtual

Implemented in lsst::afw::geom::ellipses::Separable< Ellipticity_, Radius_ >, lsst::afw::geom::ellipses::Quadrupole, and lsst::afw::geom::ellipses::Axes.

Friends And Related Function Documentation

Parametric

friend class Parametric

friend

Definition at line 189 of file BaseCore.h.

---

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

• /j/snowflake/release/lsstsw/stack/Linux64/afw/19.0.0-4-ga671dab3b+1/include/lsst/afw/geom/ellipses/BaseCore.h
• /j/snowflake/release/lsstsw/stack/Linux64/afw/19.0.0-4-ga671dab3b+1/include/lsst/afw/geom/ellipses/Convolution.h
• /j/snowflake/release/lsstsw/stack/Linux64/afw/19.0.0-4-ga671dab3b+1/include/lsst/afw/geom/ellipses/GridTransform.h
• /j/snowflake/release/lsstsw/stack/Linux64/afw/19.0.0-4-ga671dab3b+1/include/lsst/afw/geom/ellipses/Transformer.h
• /j/snowflake/release/lsstsw/stack/Linux64/afw/19.0.0-4-ga671dab3b+1/src/geom/ellipses/BaseCore.cc