functors namespace gathers all DGtal functors. More...

Namespaces
namespace	deprecated

namespace	ShapeGeometricFunctors

Data Structures
struct	Abs

struct	AndBoolFct2

class	BackwardRigidTransformation2D
	Aim: implements backward rigid transformation of point in the 2D integer space. Warring: This version uses closest neighbor interpolation. More...

class	BackwardRigidTransformation3D
	Aim: implements backward rigid transformation of point in 3D integer space around any arbitrary axis. This implementation uses the Rodrigues' rotation formula. Warring: This version uses closest neighbor interpolation. More...

struct	BallConstantFunction

struct	BallConstantPointFunction

class	BasicDomainSubSampler
	Aim: Functor that subsamples an initial domain by given a grid size and a shift vector. By this way, for a given point considered in a new domain, it allows to recover the point coordinates in the source domain. Such functor can be usefull to apply basic image subsampling in any dimensions by using ImageAdapter class. More...

struct	BinaryPointPredicate
	Aim: The predicate returns true when the given binary functor returns true for the two PointPredicates given at construction. More...

struct	BinaryPointPredicate< TPointPredicate1, TPointPredicate2, AndBoolFct2 >

struct	BinaryPointPredicate< TPointPredicate1, TPointPredicate2, OrBoolFct2 >

struct	BlueChannel

class	BoundaryPredicate
	Aim: The predicate on surfels that represents the frontier between a region and its complementary in an image. It can be used with ExplicitDigitalSurface or LightExplicitDigitalSurface so as to define a digital surface. Such surfaces may of course be open. More...

struct	Cast
	Aim: Define a simple functor using the static cast operator. More...

struct	Ceil
	Functor that rounds up. More...

struct	Ceil< void >
	Functor that rounds up. More...

struct	ColorRGBEncoder

class	Composer
	Aim: Define a new Functor from the composition of two other functors. More...

struct	ConstantPointPredicate
	Aim: The predicate that returns always the same value boolCst. More...

class	ConstImageFunctorHolder
	Transform a point-dependent (and possibly domain-dependent) functor into a constant image. More...

class	ConstValue
	Aim: Define a simple functor that returns a constant value (0 by default). More...

class	ConstValueCell
	Aim: Define a simple functor that returns a constant quantity (0 by default). More...

struct	DomainPredicate
	Aim: The predicate returning true iff the point is in the domain given at construction. It is just a wrapper class around the methods Domain::isInside( const Point & ), where `Domain` stands for any model of CDomain. More...

class	DomainRigidTransformation2D
	Aim: implements bounds of transformed domain. More...

class	DomainRigidTransformation3D
	Aim: implements bounds of transformed domain. More...

struct	DummyEstimatorFromSurfels

class	ElementaryConvolutionNormalVectorEstimator
	Aim: Estimates normal vector by convolution of elementary normal vector to adjacent surfel. More...

struct	EmbedderFromNormalVectors
	Functor that projects a face vertex of a surface mesh onto the tangent plane given by a per-face normal vector. This functor can be used in PolygonalCalculus to correct the embedding of digital surfaces using an estimated normal vector field (see [26]). More...

struct	EqualPointPredicate
	Aim: The predicate returns true when the point given as argument equals the reference point given at construction. More...

struct	FalseBoolFct0

struct	FalsePointPredicate
	Aim: The predicate that returns always false. More...

class	FlipDomainAxis
	Aim: Functor that flips the domain coordinate system from some selected axis. For instance, if a flip on the y axis is applied on a domain of bounds (0, 0, 0) (MaxX, MaxY, MaxZ), then the coordinate of P(x,y,z) will transformed in P(x, MaxY-y, z). More...

struct	Floor
	Functor that rounds down. More...

struct	Floor< void >
	Functor that rounds down. More...

class	ForwardRigidTransformation2D
	Aim: implements forward rigid transformation of point in the 2D integer space. Warring: This version uses closest neighbor interpolation. More...

class	ForwardRigidTransformation3D
	Aim: implements forward rigid transformation of point in 3D integer space around any arbitrary axis. This implementation uses the Rodrigues' rotation formula. Warring: This version uses closest neighbor interpolation. More...

class	FrontierPredicate
	Aim: The predicate on surfels that represents the frontier between two regions in an image. It can be used with ExplicitDigitalSurface or LightExplicitDigitalSurface so as to define a digital surface. Such surfaces may of course be open. More...

class	FunctorHolder
	Aim: hold any callable object (function, functor, lambda, ...) as a C(Unary)Functor model. More...

struct	GaussianKernel
	Aim: defines a functor on double numbers which corresponds to a Gaussian convolution kernel. This functor acts from [0,1] to [0,1]. More...

struct	GreenChannel

struct	HatFunction

struct	HatPointFunction

struct	Identity
	Aim: Define a simple default functor that just returns its argument. More...

struct	IdentityBoolFct1

struct	IICurvatureFunctor
	Aim: A functor Real -> Real that returns the 2d curvature by transforming the given volume. This functor is valid only in 2D space. More...

struct	IIFirstPrincipalCurvature3DFunctor
	Aim: A functor Matrix -> Real that returns the first principal curvature value by diagonalizing the given covariance matrix. This functor is valid starting from 3D space. Note that by first we mean the value with first greatest curvature in absolute value. More...

class	IIFirstPrincipalDirectionFunctor
	Aim: A functor Matrix -> RealVector that returns the first principal curvature direction by diagonalizing the given covariance matrix. This functor is valid starting from 2D space and is equivalent to IITangentDirectionFunctor in 2D. Note that by first we mean the direction with greatest curvature in absolute value. More...

struct	IIGaussianCurvature3DFunctor
	Aim: A functor Matrix -> Real that returns the Gaussian curvature by diagonalizing the given covariance matrix. This functor is valid starting from 3D space. Note that the Gaussian curvature is computed by multiplying the two gretest curvature values in absolute value. More...

struct	IIMeanCurvature3DFunctor
	Aim: A functor Real -> Real that returns the 3d mean curvature by transforming the given volume. This functor is valid only in 3D space. More...

class	IINormalDirectionFunctor
	Aim: A functor Matrix -> RealVector that returns the normal direction by diagonalizing the given covariance matrix. More...

struct	IIPrincipalCurvatures3DFunctor
	Aim: A functor Matrix -> std::pair<Real,Real> that returns the first and the second principal curvature value by diagonalizing the given covariance matrix. This functor is valid starting from 3D space. Note that by first we mean the value with first greatest curvature in absolute value. More...

class	IIPrincipalCurvaturesAndDirectionsFunctor
	Aim: A functor Matrix -> std::pair<RealVector,RealVector> that returns the first and the second principal curvature directions by diagonalizing the given covariance matrix. This functor is valid only for 3D space. Note that by second we mean the direction with second greatest curvature in absolute value. More...

class	IIPrincipalDirectionsFunctor
	Aim: A functor Matrix -> std::pair<RealVector,RealVector> that returns the first and the second principal curvature directions by diagonalizing the given covariance matrix. This functor is valid starting from 3D space. Note that by second we mean the direction with second greatest curvature in absolute value. More...

struct	IISecondPrincipalCurvature3DFunctor
	Aim: A functor Matrix -> Real that returns the second principal curvature value by diagonalizing the given covariance matrix. This functor is valid starting from 3D space. Note that by second we mean the value with second greatest curvature in absolute value. More...

class	IISecondPrincipalDirectionFunctor
	Aim: A functor Matrix -> RealVector that returns the second principal curvature direction by diagonalizing the given covariance matrix. This functor is valid starting from 3D space. Note that by second we mean the direction with second greatest curvature in absolute value. More...

class	IITangentDirectionFunctor
	Aim: A functor Matrix -> RealVector that returns the tangent direction by diagonalizing the given covariance matrix. This functor is valid only in 2D space. More...

struct	ImpliesBoolFct2

class	IntervalForegroundPredicate
	Aim: Define a simple Foreground predicate thresholding image values between two constant values (the first one being excluded). More...

class	IntervalThresholder
	Aim: A small functor with an operator () that compares one value to an interval. More...

struct	IsLowerPointPredicate
	Aim: The predicate returns true when the point is below (or equal) the given upper bound. More...

struct	IsUpperPointPredicate
	Aim: The predicate returns true when the point is above (or equal) the given lower bound. More...

struct	IsWithinPointPredicate
	Aim: The predicate returns true when the point is within the given bounds. More...

struct	Lambda64Function

struct	LambdaExponentialFunction

struct	LambdaSinFromPiFunction

struct	LargeTruncationFunctor
	Binary functor that returns the algebraic quotient i of a/b with any fractional part discarded (truncation toward zero). Note that \( \|i\| \leq \|a/b\| \). More...

class	LinearLeastSquareFittingNormalVectorEstimator
	Aim: Estimates normal vector using CGAL linear least squares plane fitting. More...

struct	Max

struct	MeanChannels

struct	Min
	Duplicated STL functors. More...

struct	Minus

class	MongeJetFittingGaussianCurvatureEstimator
	Aim: Estimates Gaussian curvature using CGAL Jet Fitting and Monge Form. More...

class	MongeJetFittingMeanCurvatureEstimator
	Aim: Estimates Mean curvature using CGAL Jet Fitting and Monge Form. More...

class	MongeJetFittingNormalVectorEstimator
	Aim: Estimates normal vector using CGAL Jet Fitting and Monge Form. More...

class	MongeJetFittingPrincipalCurvaturesEstimator
	Aim: Estimates Gaussian curvature using CGAL Jet Fitting and Monge Form. More...

struct	MultiplicationByScalar

struct	NotBoolFct1

struct	NotPointPredicate
	Aim: The predicate returns true when the point predicate given at construction return false. Thus inverse a predicate: NOT operator. More...

struct	OrBoolFct2

class	Pair1st
	Aim: Define a simple functor that returns the first member of a pair. More...

class	Pair1stMutator
	Aim: Define a simple unary functor that returns a reference on the first member of a pair in order to update it. More...

class	Pair2nd
	Aim: Define a simple functor that returns the second member of a pair. More...

class	Pair2ndMutator
	Aim: Define a simple unary functor that returns a reference on the first member of a pair in order to update it. More...

class	Point2DEmbedderIn3D
	Aim: Functor that embeds a 2D point into a 3D space from two axis vectors and an origin point given in the 3D space. More...

class	Point2ShapePredicate

struct	Point2ShapePredicateComparator
	Aim: A small struct with an operator that compares two values according to two bool template parameters. More...

struct	Point2ShapePredicateComparator< T, false, false >
	Aim: A small struct with an operator that compares two values (<). More...

struct	Point2ShapePredicateComparator< T, false, true >
	Aim: A small struct with an operator that compares two values (<=). More...

struct	Point2ShapePredicateComparator< T, true, false >
	Aim: A small struct with an operator that compares two values (>). More...

struct	Point2ShapePredicateComparator< T, true, true >
	Aim: A small struct with an operator that compares two values (>=). More...

struct	PointFunctorFromPointPredicateAndDomain
	Create a point functor from a point predicate and a domain. More...

class	PointFunctorHolder
	Aim: hold any object callable on points as a DGtal::concepts::CPointFunctor model. More...

struct	PointFunctorPredicate
	Aim: The predicate returns true when the predicate returns true for the value assigned to a given point in the point functor. More...

class	PolarPointComparatorBy2x2DetComputer
	Aim: Class that implements a binary point predicate, which is able to compare the position of two given points \( P, Q \) around a pole \( O \). More precisely, it compares the oriented angles lying between the horizontal line passing by \( O \) and the rays \( [OP) \) and \( [OQ) \) (in a counter-clockwise orientation). More...

struct	PositionFunctorFrom2DPoint
	Functor that returns the position of any point/vector with respect to a digital straight line of shift myShift. We recall that the shift vector is a vector translating a point of remainder \( r \) to a point of remainder \( r + \omega \). See Digital straight lines and segments for further details. More...

struct	PredicateCombiner
	Aim: The predicate returns true when the given binary functor returns true for the two Predicates given at construction. More...

struct	Projector
	Aim: Functor that maps a point P of dimension i to a point Q of dimension j. The member myDims is an array containing the coordinates - (0, 1, ..., j-1) by default - that are copied from P to Q. More...

struct	RedChannel

struct	Rescaling
	Aim: Functor allowing to rescale a value. Values of the initial scale [initMin,initMax] are rescaled to the new scale [newMin,newMax]. More...

struct	Round
	Functor that rounds to the nearest integer. More...

struct	Round< void >
	Functor that rounds to the nearest integer. More...

class	SCellToArrow
	Aim: transforms a signed cell into an arrow, ie. a pair point-vector. More...

class	SCellToCode
	Aim: transforms a 2d signed cell, basically a linel, into a code (0,1,2 or 3),. More...

class	SCellToIncidentPoints
	Aim: transforms a signed cell c into a pair of points corresponding to the signed cells of greater dimension that are indirectly and directly incident to c. More...

class	SCellToInnerPoint
	Aim: transforms a signed cell c into a point corresponding to the signed cell of greater dimension that is indirectly incident to c. More...

class	SCellToOuterPoint
	Aim: transforms a signed cell c into a point corresponding to the signed cell of greater dimension that is directly incident to c. More...

class	SCellToPoint
	Aim: transforms a scell into a point. More...

class	SimpleThresholdForegroundPredicate
	Aim: Define a simple Foreground predicate thresholding image values given a single thresold. More precisely, the functor operator() returns true if the value is greater than a given threshold. More...

class	SliceRotator2D
	Special Point Functor that adds one dimension to a 2D point and apply on it a rotation of angle alpha according to a given direction and the domain center. It also checks if the resulting point is inside the 3D domain, else it returns a particular point (by default the point at domain origin (from the domain method lowerBound()). More...

class	SphereFittingEstimator
	Aim: Use Patate library to perform a local sphere fitting. More...

class	SphericalHoughNormalVectorEstimator
	Aim: This functor estimates normal vector for a collection of surfels using spherical accumulator based Hough voting. More...

struct	StrictTruncationFunctor
	BinaryFunctor that computes the algebraic quotient i of a/b with any non zero fractional part discarded (truncation toward zero), and that returns i+1 (resp. i-1) if a is negative (resp. positive) if b divides a. Since we assume that a is not equal to 0, we have \( \|i\| < \|a/b\| \). See also LargeTruncationFunctor. More...

struct	SurfelSetPredicate
	Aim: The predicate returning true iff the point is in the domain given at construction. More...

class	TensorVotingFeatureExtraction
	Aim: Implements a functor to detect feature points from normal tensor voting strategy. More...

class	Thresholder
	Aim: A small functor with an operator () that compares one value to a threshold value according to two bool template parameters. More...

struct	Thresholder< T, false, false >

struct	Thresholder< T, false, true >

struct	Thresholder< T, true, false >

struct	Thresholder< T, true, true >

struct	TrueBoolFct0

struct	TruePointPredicate
	Aim: The predicate that returns always true. More...

struct	Trunc
	Functor that rounds towards zero. More...

struct	Trunc< void >
	Functor that rounds towards zero. More...

struct	UnaryMinus

struct	VCMAbsoluteCurvatureFunctor
	Aim: A functor Surfel -> Quantity that returns the absolute curvature at given surfel. This class has meaning only in 2D. More...

struct	VCMFirstPrincipalAbsoluteCurvatureFunctor
	Aim: A functor Surfel -> Quantity that returns the first principal absolute curvature (greatest curvature) at given surfel. This class has meaning only in 3D. More...

struct	VCMMeanAbsoluteCurvatures3DFunctor
	Aim: A functor Surfel -> Quantity that returns the mean of absolute curvatures at given surfel: (abs(k1)+abs(k2))/2. This class has meaning only in 3D. More...

struct	VCMNormalVectorFunctor
	Aim: A functor Surfel -> Quantity that returns the outer normal vector at given surfel. More...

struct	VCMSecondPrincipalAbsoluteCurvatureFunctor
	Aim: A functor Surfel -> Quantity that returns the second principal absolute curvature (smallest curvature) at given surfel. This class has meaning only in 3D. More...

struct	VectorRounding

struct	XorBoolFct2

Typedefs
typedef boost::function0< bool >	BoolFunctor0

typedef boost::function1< bool, bool >	BoolFunctor1

typedef boost::function2< bool, bool, bool >	BoolFunctor2

typedef boost::function3< bool, bool, bool, bool >	BoolFunctor3

Functions
template<typename FunctorStorage , bool NeedDereference>
std::ostream &	operator<< (std::ostream &out, const FunctorHolder< FunctorStorage, NeedDereference > &object)
	Overloads 'operator<<' for displaying objects of class FunctorHolder.

template<typename Function >
auto	holdFunctor (Function &&fn) -> decltype(holdFunctorImpl(std::forward< Function >(fn), typename std::is_lvalue_reference< Function >{}))
	Hold any callable object (function, functor, lambda, ...) as a C(Unary)Functor model.

template<typename TPoint , typename TDetComputer >
std::ostream &	operator<< (std::ostream &out, const PolarPointComparatorBy2x2DetComputer< TPoint, TDetComputer > &object)

template<typename TDomain , typename TValue , typename TFunctor >
std::ostream &	operator<< (std::ostream &out, const ConstImageFunctorHolder< TDomain, TValue, TFunctor > &object)
	Overloads 'operator<<' for displaying objects of class ConstImageFunctorHolder.

template<typename TValue , typename TDomain , typename TFunctor >
auto	holdConstImageFunctor (TDomain const &aDomain, TFunctor &&aFunctor) -> ConstImageFunctorHolder< TDomain, TValue, decltype(holdFunctor(std::forward< TFunctor >(aFunctor)))>
	ConstImageFunctorHolder construction helper with specification of the return type.

template<typename TDomain , typename TFunctor >
auto	holdConstImageFunctor (TDomain const &aDomain, TFunctor &&aFunctor) -> ConstImageFunctorHolder< TDomain, typename std::decay< decltype(aFunctor(std::declval< typename TDomain::Point >()))>::type, decltype(holdFunctor(std::forward< TFunctor >(aFunctor))) >
	ConstImageFunctorHolder construction helper with auto-deduction of the return type.

template<typename TPoint , typename TValue , typename TFunctor >
std::ostream &	operator<< (std::ostream &out, const PointFunctorHolder< TPoint, TValue, TFunctor > &object)
	Overloads 'operator<<' for displaying objects of class PointFunctorHolder.

template<typename TPoint , typename TValue , typename TFunctor >
auto	holdPointFunctor (TFunctor &&aFunctor) -> PointFunctorHolder< TPoint, TValue, decltype(holdFunctor(std::forward< TFunctor >(aFunctor)))>
	PointFunctorHolder construction helper with specification of the return type.

template<typename TPoint , typename TFunctor >
auto	holdPointFunctor (TFunctor &&aFunctor) -> PointFunctorHolder< TPoint, typename std::decay< decltype(aFunctor(std::declval< TPoint >()))>::type, decltype(holdFunctor(std::forward< TFunctor >(aFunctor))) >
	PointFunctorHolder construction helper with auto-deduction of the return type.

Variables
static const BoolFunctor0	trueBF0 = TrueBoolFct0()

static const BoolFunctor0	falseBF0 = FalseBoolFct0()

static const BoolFunctor1	identityBF1 = IdentityBoolFct1()

static const BoolFunctor1	notBF1 = NotBoolFct1()

static const BoolFunctor2	andBF2 = AndBoolFct2()

static const BoolFunctor2	orBF2 = OrBoolFct2()

static const BoolFunctor2	xorBF2 = XorBoolFct2()

static const BoolFunctor2	impliesBF2 = ImpliesBoolFct2()

Detailed Description

functors namespace gathers all DGtal functors.

Aim: Provide various lambda functions and others L-MST related functors.

Description: Extension of namespace functors by functors related to L-MST.

A lambda function \(\lambda()\) - maps from [0,1] \(\in \mathbb{R}_+\) with F(0) = F(1) = 0 and F() > 0 elsewhere and need to satisfy convexity/concavity property. For more information see J.-O. Lachaud et el [72].

Typedef Documentation

◆ BoolFunctor0

typedef boost::function0< bool > DGtal::functors::BoolFunctor0

May hold bool functors taking no arguments.

Definition at line 54 of file BasicBoolFunctors.h.

◆ BoolFunctor1

typedef boost::function1< bool, bool > DGtal::functors::BoolFunctor1

May hold bool functors taking one bool argument.

Definition at line 59 of file BasicBoolFunctors.h.

◆ BoolFunctor2

typedef boost::function2< bool, bool, bool > DGtal::functors::BoolFunctor2

May hold bool functors taking two bool arguments.

Definition at line 64 of file BasicBoolFunctors.h.

◆ BoolFunctor3

typedef boost::function3< bool, bool, bool, bool > DGtal::functors::BoolFunctor3

May hold bool functors taking three bool arguments (Useful ?).

Definition at line 69 of file BasicBoolFunctors.h.

Function Documentation

◆ holdConstImageFunctor() [1/2]

template<typename TValue , typename TDomain , typename TFunctor >

auto DGtal::functors::holdConstImageFunctor	(	TDomain const &	aDomain,
		TFunctor &&	aFunctor ) -> ConstImageFunctorHolder<TDomain, TValue, decltype(holdFunctor(std::forward<TFunctor>(aFunctor)))>

inline

ConstImageFunctorHolder construction helper with specification of the return type.

Template Parameters

TValue	The image value type.
TDomain	The domain type (auto-deduced).
TFunctor	The functor type (auto-deduced).

Parameters

aDomain	The image domain.
aFunctor	The functor that generates the image.

Returns: an instance of the appropriate ConstImageFunctorHolder type.

See also: ConstImageFunctorHolder

Definition at line 277 of file ConstImageFunctorHolder.h.

  {
    return ConstImageFunctorHolder<TDomain, TValue, decltype(holdFunctor(std::forward<TFunctor>(aFunctor)))>{ aDomain, holdFunctor(std::forward<TFunctor>(aFunctor)) };
  }

References holdFunctor().

Referenced by main().

◆ holdConstImageFunctor() [2/2]

template<typename TDomain , typename TFunctor >

auto DGtal::functors::holdConstImageFunctor	(	TDomain const &	aDomain,
		TFunctor &&	aFunctor ) -> ConstImageFunctorHolder< TDomain, typename std::decay<decltype(aFunctor(std::declval<typename TDomain::Point>()))>::type, decltype(holdFunctor(std::forward<TFunctor>(aFunctor))) >

inline

ConstImageFunctorHolder construction helper with auto-deduction of the return type.

Template Parameters

TDomain	The domain type (auto-deduced).
TFunctor	The functor type (auto-deduced).

Parameters

aDomain	The image domain.
aFunctor	The functor (unary or binary) that generates the image.

Returns: an instance of the appropriate ConstImageFunctorHolder type.

Note: You don't have to choose between the version for unary or binary functor: this choice is automatically done using SFINAE technique.

See also: ConstImageFunctorHolder and Images for more informations.

Definition at line 305 of file ConstImageFunctorHolder.h.

  {
    return ConstImageFunctorHolder<
        TDomain,
        typename std::decay<decltype(aFunctor(std::declval<typename TDomain::Point>()))>::type,
        decltype(holdFunctor(std::forward<TFunctor>(aFunctor)))
      >{ aDomain, holdFunctor(std::forward<TFunctor>(aFunctor)) };
  }

References holdFunctor().

◆ holdFunctor()

template<typename Function >

auto DGtal::functors::holdFunctor ( Function && fn ) -> decltype(holdFunctorImpl(std::forward<Function>(fn), typename std::is_lvalue_reference<Function>{}))

inline

Hold any callable object (function, functor, lambda, ...) as a C(Unary)Functor model.

Template Parameters

Function The callable object type (auto-deduced, do not specify it)

Parameters

fn	The callable object to be holded.

Returns: a FunctorHolder instance with appropriate storage type depending on the given object.

See also: FunctorHolder and Using functions, functors and lambdas in DGtal for more informations

Definition at line 279 of file FunctorHolder.h.

                                                                                                 {})) // Can we please pass to C++14 ?
{
  return holdFunctorImpl(std::forward<Function>(fn), typename std::is_lvalue_reference<Function>{});
}

Referenced by get_mean_binarizer_from_range(), get_trivial_binarizer(), holdConstImageFunctor(), holdConstImageFunctor(), holdPointFunctor(), holdPointFunctor(), and main().

◆ holdPointFunctor() [1/2]

template<typename TPoint , typename TValue , typename TFunctor >

auto DGtal::functors::holdPointFunctor ( TFunctor && aFunctor ) -> PointFunctorHolder<TPoint, TValue, decltype(holdFunctor(std::forward<TFunctor>(aFunctor)))>

inline

PointFunctorHolder construction helper with specification of the return type.

Template Parameters

TPoint	The point type.
TValue	The functor value type.
TFunctor	The functor type (auto-deduced).

Parameters

aFunctor The functor to hold.

Returns: an instance of the appropriate PointFunctorHolder type.

See also: PointFunctorHolder

Definition at line 196 of file PointFunctorHolder.h.

  {
    return PointFunctorHolder<TPoint, TValue, decltype(holdFunctor(std::forward<TFunctor>(aFunctor)))>{
        holdFunctor(std::forward<TFunctor>(aFunctor))
    };
  }

References holdFunctor().

Referenced by main().

◆ holdPointFunctor() [2/2]

template<typename TPoint , typename TFunctor >

auto DGtal::functors::holdPointFunctor ( TFunctor && aFunctor ) -> PointFunctorHolder< TPoint, typename std::decay<decltype(aFunctor(std::declval<TPoint>()))>::type, decltype(holdFunctor(std::forward<TFunctor>(aFunctor))) >

inline

PointFunctorHolder construction helper with auto-deduction of the return type.

Template Parameters

TPoint	The point type.
TFunctor	The functor type (auto-deduced).

Parameters

aFunctor The functor to hold.

Returns: an instance of the appropriate PointFunctorHolder type.

See also: PointFunctorHolder and Using functions, functors and lambdas in DGtal for more informations.

Definition at line 218 of file PointFunctorHolder.h.

  {
    return PointFunctorHolder<
        TPoint,
        typename std::decay<decltype(aFunctor(std::declval<TPoint>()))>::type,
        decltype(holdFunctor(std::forward<TFunctor>(aFunctor)))
      >{ holdFunctor(std::forward<TFunctor>(aFunctor)) };
  }

References holdFunctor().

◆ operator<<() [1/4]

template<typename TDomain , typename TValue , typename TFunctor >

std::ostream & DGtal::functors::operator<<	(	std::ostream &	out,
		const ConstImageFunctorHolder< TDomain, TValue, TFunctor > &	object )

Overloads 'operator<<' for displaying objects of class ConstImageFunctorHolder.

Parameters

out	the output stream where the object is written.
object	the object of class ConstImageFunctorHolder to write.

Returns: the output stream after the writing.

Definition at line 253 of file ConstImageFunctorHolder.h.

{
  object.selfDisplay(out);
  return out;
}

◆ operator<<() [2/4]

template<typename FunctorStorage , bool NeedDereference>

std::ostream & DGtal::functors::operator<<	(	std::ostream &	out,
		const FunctorHolder< FunctorStorage, NeedDereference > &	object )

Overloads 'operator<<' for displaying objects of class FunctorHolder.

Parameters

out	the output stream where the object is written.
object	the object of class FunctorHolder to write.

Returns: the output stream after the writing.

Definition at line 238 of file FunctorHolder.h.

{
  object.selfDisplay( out );
  return out;
}

◆ operator<<() [3/4]

template<typename TPoint , typename TValue , typename TFunctor >

std::ostream & DGtal::functors::operator<<	(	std::ostream &	out,
		const PointFunctorHolder< TPoint, TValue, TFunctor > &	object )

Overloads 'operator<<' for displaying objects of class PointFunctorHolder.

Parameters

out	the output stream where the object is written.
object	the object of class PointFunctorHolder to write.

Returns: the output stream after the writing.

Definition at line 172 of file PointFunctorHolder.h.

{
  object.selfDisplay(out);
  return out;
}

◆ operator<<() [4/4]

template<typename TPoint , typename TDetComputer >

std::ostream & DGtal::functors::operator<<	(	std::ostream &	out,
		const PolarPointComparatorBy2x2DetComputer< TPoint, TDetComputer > &	object )

Overloads 'operator<<' for displaying objects of class 'PolarPointComparatorBy2x2DetComputer'.

Parameters

out	the output stream where the object is written.
object	the object of class 'PolarPointComparatorBy2x2DetComputer' to write.

Returns: the output stream after the writing.

Variable Documentation

◆ andBF2

const BoolFunctor2 DGtal::functors::andBF2 = AndBoolFct2()

static

The object function and (2 bool args).

Definition at line 150 of file BasicBoolFunctors.h.

Referenced by testBasicBoolFunctors(), and testDisplayDTFromCircle().

◆ falseBF0

const BoolFunctor0 DGtal::functors::falseBF0 = FalseBoolFct0()

static

The object function (0 bool args) returning false.

Definition at line 93 of file BasicBoolFunctors.h.

Referenced by testBasicBoolFunctors().

◆ identityBF1

const BoolFunctor1 DGtal::functors::identityBF1 = IdentityBoolFct1()

static

The object function identity (1 bool args).

Definition at line 112 of file BasicBoolFunctors.h.

Referenced by testBasicBoolFunctors().

◆ impliesBF2

const BoolFunctor2 DGtal::functors::impliesBF2 = ImpliesBoolFct2()

static

The object function implies (2 bool args).

Definition at line 165 of file BasicBoolFunctors.h.

Referenced by testBasicBoolFunctors().

◆ notBF1

const BoolFunctor1 DGtal::functors::notBF1 = NotBoolFct1()

static

The object function NOT (1 bool args).

Definition at line 117 of file BasicBoolFunctors.h.

Referenced by testBasicBoolFunctors().

◆ orBF2

const BoolFunctor2 DGtal::functors::orBF2 = OrBoolFct2()

static

The object function or (2 bool args).

Definition at line 155 of file BasicBoolFunctors.h.

Referenced by testBasicBoolFunctors().

◆ trueBF0

const BoolFunctor0 DGtal::functors::trueBF0 = TrueBoolFct0()

static

The object function (0 bool args) returning true.

Definition at line 88 of file BasicBoolFunctors.h.

Referenced by testBasicBoolFunctors().

◆ xorBF2

const BoolFunctor2 DGtal::functors::xorBF2 = XorBoolFct2()

static

The object function xor (2 bool args).

Definition at line 160 of file BasicBoolFunctors.h.

Referenced by testBasicBoolFunctors().

Namespaces

Data Structures

Typedefs

Functions

Variables

Detailed Description

Typedef Documentation

◆ BoolFunctor0

◆ BoolFunctor1

◆ BoolFunctor2

◆ BoolFunctor3

Function Documentation

◆ holdConstImageFunctor() [1/2]

◆ holdConstImageFunctor() [2/2]

◆ holdFunctor()

◆ holdPointFunctor() [1/2]

◆ holdPointFunctor() [2/2]

◆ operator<<() [1/4]

◆ operator<<() [2/4]

◆ operator<<() [3/4]

◆ operator<<() [4/4]

Variable Documentation

◆ andBF2

◆ falseBF0

◆ identityBF1

◆ impliesBF2

◆ notBF1

◆ orBF2

◆ trueBF0

◆ xorBF2