1-dimensional bilinear interpolation function. More...

#include <warpExposure.h>

Inheritance diagram for lsst::afw::math::BilinearWarpingKernel::BilinearFunction1:

Public Types
typedef boost::shared_ptr < Function1< Kernel::Pixel > >	Function1Ptr

Public Types inherited from lsst::afw::math::Function1< Kernel::Pixel >
typedef boost::shared_ptr < Function1< Kernel::Pixel > >	Ptr

Public Types inherited from lsst::daf::base::Citizen
enum	{ magicSentinel = 0xdeadbeef }

typedef unsigned long	memId
	Type of the block's ID. More...

typedef memId(*	memNewCallback )(const memId cid)
	A function used to register a callback. More...

typedef memId(*	memCallback )(const Citizen *ptr)

Public Member Functions
	BilinearFunction1 (double fracPos)
	Construct a Bilinear interpolation function. More...

virtual	~BilinearFunction1 ()

virtual Function1Ptr	clone () const
	Return a pointer to a deep copy of this function. More...

virtual Kernel::Pixel	operator() (double x) const
	Solve bilinear equation. More...

virtual std::string	toString (std::string const &="") const
	Return string representation. More...

Public Member Functions inherited from lsst::afw::math::Function1< Kernel::Pixel >
	Function1 (unsigned int nParams)
	Construct a Function1 given the number of function parameters. More...

	Function1 (std::vector< double > const &params)
	Construct a Function1 given the function parameters. More...

virtual	~Function1 ()

virtual void	computeCache (int const n)

Public Member Functions inherited from lsst::afw::math::Function< Kernel::Pixel >
	Function (unsigned int nParams)
	Construct a Function given the number of function parameters. More...

	Function (std::vector< double > const &params)
	Construct a Function given the function parameters. More...

virtual	~Function ()

unsigned int	getNParameters () const
	Return the number of function parameters. More...

virtual double	getParameter (unsigned int ind) const
	Get one function parameter without range checking. More...

std::vector< double > const &	getParameters () const
	Return all function parameters. More...

virtual bool	isLinearCombination () const
	Is the function a linear combination of its parameters? More...

void	setParameter (unsigned int ind, double newValue)
	Set one function parameter without range checking. More...

void	setParameters (std::vector< double > const &params)
	Set all function parameters. More...

Public Member Functions inherited from lsst::daf::base::Citizen
	Citizen (const std::type_info &)

	Citizen (Citizen const &)

	~Citizen ()

Citizen &	operator= (Citizen const &)

std::string	repr () const
	Return a string representation of a Citizen. More...

void	markPersistent (void)
	Mark a Citizen as persistent and not destroyed until process end. More...

memId	getId () const
	Return the Citizen's ID. More...

Public Member Functions inherited from lsst::afw::table::io::Persistable
void	writeFits (std::string const &fileName, std::string const &mode="w") const
	Write the object to a regular FITS file. More...

void	writeFits (fits::MemFileManager &manager, std::string const &mode="w") const
	Write the object to a FITS image in memory. More...

void	writeFits (fits::Fits &fitsfile) const
	Write the object to an already-open FITS object. More...

virtual bool	isPersistable () const
	Return true if this particular object can be persisted using afw::table::io. More...

virtual	~Persistable ()

Additional Inherited Members
Static Public Member Functions inherited from lsst::afw::table::io::PersistableFacade< Function1< Kernel::Pixel > >
static boost::shared_ptr < Function1< Kernel::Pixel > >	readFits (fits::Fits &fitsfile)
	Read an object from an already open FITS object. More...

static boost::shared_ptr < Function1< Kernel::Pixel > >	readFits (std::string const &fileName, int hdu=0)
	Read an object from a regular FITS file. More...

static boost::shared_ptr < Function1< Kernel::Pixel > >	readFits (fits::MemFileManager &manager, int hdu=0)
	Read an object from a FITS file in memory. More...

Static Public Member Functions inherited from lsst::daf::base::Citizen
static bool	hasBeenCorrupted ()
	Check all allocated blocks for corruption. More...

static memId	getNextMemId ()
	Return the memId of the next object to be allocated. More...

static int	init ()
	Called once when the memory system is being initialised. More...

static int	census (int, memId startingMemId=0)
	How many active Citizens are there? More...

static void	census (std::ostream &stream, memId startingMemId=0)
	Print a list of all active Citizens to stream, sorted by ID. More...

static const std::vector < const Citizen * > *	census ()
	Return a (newly allocated) std::vector of active Citizens sorted by ID. More...

static memId	setNewCallbackId (memId id)
	Call the NewCallback when block is allocated. More...

static memId	setDeleteCallbackId (memId id)
	Call the current DeleteCallback when block is deleted. More...

static memNewCallback	setNewCallback (memNewCallback func)
	Set the NewCallback function. More...

static memCallback	setDeleteCallback (memCallback func)
	Set the DeleteCallback function. More...

static memCallback	setCorruptionCallback (memCallback func)
	Set the CorruptionCallback function. More...

Static Public Member Functions inherited from lsst::afw::table::io::PersistableFacade< Function< Kernel::Pixel > >
static boost::shared_ptr < Function< Kernel::Pixel > >	readFits (fits::Fits &fitsfile)
	Read an object from an already open FITS object. More...

static boost::shared_ptr < Function< Kernel::Pixel > >	readFits (std::string const &fileName, int hdu=0)
	Read an object from a regular FITS file. More...

static boost::shared_ptr < Function< Kernel::Pixel > >	readFits (fits::MemFileManager &manager, int hdu=0)
	Read an object from a FITS file in memory. More...

Protected Types inherited from lsst::afw::table::io::Persistable
typedef io::OutputArchiveHandle	OutputArchiveHandle

Protected Member Functions inherited from lsst::afw::math::Function1< Kernel::Pixel >
	Function1 ()

Protected Member Functions inherited from lsst::afw::math::Function< Kernel::Pixel >
	Function ()

virtual std::string	getPythonModule () const
	Return the fully-qualified Python module that should be imported to guarantee that its factory is registered. More...

Protected Member Functions inherited from lsst::afw::table::io::Persistable
virtual std::string	getPersistenceName () const
	Return the unique name used to persist this object and look up its factory. More...

virtual void	write (OutputArchiveHandle &handle) const
	Write the object to one or more catalogs. More...

	Persistable ()

	Persistable (Persistable const &other)

void	operator= (Persistable const &other)

Protected Attributes inherited from lsst::afw::math::Function< Kernel::Pixel >
std::vector< double >	_params

bool	_isCacheValid

Detailed Description

1-dimensional bilinear interpolation function.

Optimized for bilinear warping so only accepts two values: 0 and 1 (which is why it defined in the BilinearWarpingKernel class instead of being made available as a standalone function).

Definition at line 119 of file warpExposure.h.

Member Typedef Documentation

typedef boost::shared_ptr< Function1<Kernel::Pixel> > lsst::afw::math::BilinearWarpingKernel::BilinearFunction1::Function1Ptr

Definition at line 121 of file warpExposure.h.

Constructor & Destructor Documentation

lsst::afw::math::BilinearWarpingKernel::BilinearFunction1::BilinearFunction1 ( double fracPos )

inlineexplicit

Construct a Bilinear interpolation function.

Parameters

fracPos fractional position; must be >= 0 and < 1

Definition at line 126 of file warpExposure.h.

             :
                 Function1<Kernel::Pixel>(1)
             {
                 this->_params[0] = fracPos;
             }

virtual lsst::afw::math::BilinearWarpingKernel::BilinearFunction1::~BilinearFunction1 ( )

inlinevirtual

Definition at line 133 of file warpExposure.h.

133 {}

Member Function Documentation

virtual Function1Ptr lsst::afw::math::BilinearWarpingKernel::BilinearFunction1::clone ( void ) const

inlinevirtual

Return a pointer to a deep copy of this function.

This function exists instead of a copy constructor so one can obtain a copy of an actual function instead of a useless copy of the base class.

Every concrete subclass must override this method.

Returns: a pointer to a deep copy of the function

Implements lsst::afw::math::Function1< Kernel::Pixel >.

Definition at line 135 of file warpExposure.h.

                                                {
                 return Function1Ptr(new BilinearFunction1(this->_params[0]));
             }

afwMath::Kernel::Pixel lsst::afw::math::BilinearWarpingKernel::BilinearFunction1::operator() ( double x ) const

virtual

Solve bilinear equation.

Only the following arguments will give reliably meaningful values:

0.0 or 1.0 if the kernel center index is 0 in this axis
-1.0 or 0.0 if the kernel center index is 1 in this axis

Implements lsst::afw::math::Function1< Kernel::Pixel >.

Definition at line 132 of file warpExposure.cc.

 {
     //
     // this->_params[0] = value of x where we want to interpolate the function
     // x = integer value of x where we evaluate the function in the interpolation
     // 
     // The following weird-looking expression has no if/else statements, is roundoff-tolerant,
     // and works in the following two cases:
     //     0 < this->_params[0] < 1,  x \in {0,1}
     //     -1 < this->_params[0] < 0,  x \in {-1,0}
     //
     // The checks in BilinearWarpingKernel::setKernelParameter() ensure that one of these
     // conditions is satisfied
     //
     return 0.5 + (1.0 - (2.0 * fabs(this->_params[0]))) * (0.5 - fabs(x));
 }

std::string lsst::afw::math::BilinearWarpingKernel::BilinearFunction1::toString ( std::string const & prefix = "" ) const

virtual

Return string representation.

Reimplemented from lsst::afw::math::Function1< Kernel::Pixel >.

Definition at line 158 of file warpExposure.cc.

                                                                                                {
     std::ostringstream os;
     os << "_BilinearFunction1: ";
     os << Function1<Kernel::Pixel>::toString(prefix);
     return os.str();
 }

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

/home/lsstsw/stack/Linux64/afw/11.0-2-g04d2804/include/lsst/afw/math/warpExposure.h
/home/lsstsw/stack/Linux64/afw/11.0-2-g04d2804/src/math/warpExposure.cc

Public Types

Public Member Functions

Additional Inherited Members

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation