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LSST Data Management Base Package
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lsst::shapelet::ShapeletFunctionEvaluator Class Reference

Evaluates a ShapeletFunction. More...

#include <ShapeletFunction.h>

Public Types

typedef std::shared_ptr< ShapeletFunctionEvaluatorPtr
 
typedef std::shared_ptr< ShapeletFunctionEvaluator const > ConstPtr
 

Public Member Functions

double operator() (double x, double y) const
 Evaluate at the given point.
 
double operator() (geom::Point2D const &point) const
 Evaluate at the given point.
 
double operator() (geom::Extent2D const &point) const
 Evaluate at the given point.
 
ndarray::Array< double, 1, 1 > operator() (ndarray::Array< double const, 1 > const &x, ndarray::Array< double const, 1 > const &y) const
 Evaluate at the given points, returning a newly-allocated array.
 
void addToImage (ndarray::Array< double, 2, 1 > const &array, geom::Point2I const &xy0=geom::Point2I()) const
 Add the function to the given image-like array.
 
void addToImage (afw::image::Image< double > &image) const
 Evaluate the function on the given image.
 
double integrate () const
 Compute the definite integral or integral moments.
 
afw::geom::ellipses::Ellipse computeMoments () const
 Return the unweighted dipole and quadrupole moments of the function as an ellipse.
 
void update (ShapeletFunction const &function)
 Update the evaluator from the given function.
 
 ShapeletFunctionEvaluator (ShapeletFunction const &function)
 Construct an evaluator for the given function.
 

Friends

class MultiShapeletFunctionEvaluator
 

Detailed Description

Evaluates a ShapeletFunction.

This is distinct from ShapeletFunction to allow the evaluator to construct temporaries and allocate workspace that will be reused when evaluating at multiple points.

A ShapeletFunctionEvaluator is invalidated whenever the ShapeletFunction it was constructed from is modified.

Definition at line 177 of file ShapeletFunction.h.

Member Typedef Documentation

◆ ConstPtr

◆ Ptr

Constructor & Destructor Documentation

◆ ShapeletFunctionEvaluator()

lsst::shapelet::ShapeletFunctionEvaluator::ShapeletFunctionEvaluator ( ShapeletFunction const & function)
explicit

Construct an evaluator for the given function.

Member Function Documentation

◆ addToImage() [1/2]

void lsst::shapelet::ShapeletFunctionEvaluator::addToImage ( afw::image::Image< double > & image) const
inline

Evaluate the function on the given image.

Definition at line 211 of file ShapeletFunction.h.

211 {
212 addToImage(image.getArray(), image.getXY0());
213 }
void addToImage(ndarray::Array< double, 2, 1 > const &array, geom::Point2I const &xy0=geom::Point2I()) const
Add the function to the given image-like array.

◆ addToImage() [2/2]

void lsst::shapelet::ShapeletFunctionEvaluator::addToImage ( ndarray::Array< double, 2, 1 > const & array,
geom::Point2I const & xy0 = geom::Point2I() ) const

Add the function to the given image-like array.

◆ computeMoments()

afw::geom::ellipses::Ellipse lsst::shapelet::ShapeletFunctionEvaluator::computeMoments ( ) const

Return the unweighted dipole and quadrupole moments of the function as an ellipse.

◆ integrate()

double lsst::shapelet::ShapeletFunctionEvaluator::integrate ( ) const
inline

Compute the definite integral or integral moments.

Definition at line 216 of file ShapeletFunction.h.

216 {
217 return _h.sumIntegration(_coefficients);
218 }

◆ operator()() [1/4]

double lsst::shapelet::ShapeletFunctionEvaluator::operator() ( double x,
double y ) const
inline

Evaluate at the given point.

Definition at line 184 of file ShapeletFunction.h.

184 {
185 return this->operator()(geom::Point2D(x, y));
186 }
double operator()(double x, double y) const
Evaluate at the given point.
Point< double, 2 > Point2D
Definition Point.h:324

◆ operator()() [2/4]

double lsst::shapelet::ShapeletFunctionEvaluator::operator() ( geom::Extent2D const & point) const
inline

Evaluate at the given point.

Definition at line 194 of file ShapeletFunction.h.

194 {
195 return _normalization * _h.sumEvaluation(_coefficients, _transform(point));
196 }

◆ operator()() [3/4]

double lsst::shapelet::ShapeletFunctionEvaluator::operator() ( geom::Point2D const & point) const
inline

Evaluate at the given point.

Definition at line 189 of file ShapeletFunction.h.

189 {
190 return _normalization * _h.sumEvaluation(_coefficients, _transform(point));
191 }

◆ operator()() [4/4]

ndarray::Array< double, 1, 1 > lsst::shapelet::ShapeletFunctionEvaluator::operator() ( ndarray::Array< double const, 1 > const & x,
ndarray::Array< double const, 1 > const & y ) const

Evaluate at the given points, returning a newly-allocated array.

◆ update()

void lsst::shapelet::ShapeletFunctionEvaluator::update ( ShapeletFunction const & function)

Update the evaluator from the given function.

Friends And Related Symbol Documentation

◆ MultiShapeletFunctionEvaluator

friend class MultiShapeletFunctionEvaluator
friend

Definition at line 231 of file ShapeletFunction.h.


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