DGtal::functors::BallConstantPointFunction< TPoint, TScalar > Struct Template Reference

#include <DGtal/kernel/Point2ScalarFunctors.h>

Public Types
typedef TPoint	Point
typedef TScalar	Scalar
typedef Point	argument_type
typedef Scalar	value_type

Public Member Functions
	BallConstantPointFunction (Scalar v0, Scalar r)
Scalar	operator() (const Point &p) const

Data Fields
Scalar	myV0
Scalar	myR2

Detailed Description

template<typename TPoint, typename TScalar>
struct DGtal::functors::BallConstantPointFunction< TPoint, TScalar >

The ball constant function of value v0 between norm 0 and r, 0 elsewhere. A function Point -> Scalar.

Examples

geometry/surfaces/dvcm-2d-curvature.cpp.

Definition at line 85 of file Point2ScalarFunctors.h.

Member Typedef Documentation

argument_type

template<typename TPoint, typename TScalar>

typedef Point DGtal::functors::BallConstantPointFunction< TPoint, TScalar >::argument_type

Definition at line 88 of file Point2ScalarFunctors.h.

Point

template<typename TPoint, typename TScalar>

typedef TPoint DGtal::functors::BallConstantPointFunction< TPoint, TScalar >::Point

Definition at line 86 of file Point2ScalarFunctors.h.

Scalar

template<typename TPoint, typename TScalar>

typedef TScalar DGtal::functors::BallConstantPointFunction< TPoint, TScalar >::Scalar

Definition at line 87 of file Point2ScalarFunctors.h.

value_type

template<typename TPoint, typename TScalar>

typedef Scalar DGtal::functors::BallConstantPointFunction< TPoint, TScalar >::value_type

Definition at line 89 of file Point2ScalarFunctors.h.

Constructor & Destructor Documentation

BallConstantPointFunction()

template<typename TPoint, typename TScalar>

DGtal::functors::BallConstantPointFunction< TPoint, TScalar >::BallConstantPointFunction ( Scalar v0, Scalar r )

inline

Definition at line 95 of file Point2ScalarFunctors.h.

        : myV0( v0 ), myR2( r*r ) {}

References myR2, and myV0.

Member Function Documentation

operator()()

template<typename TPoint, typename TScalar>

Scalar DGtal::functors::BallConstantPointFunction< TPoint, TScalar >::operator() ( const Point & p ) const

inline

Definition at line 97 of file Point2ScalarFunctors.h.

      {
        Scalar d = 0;
        for ( typename Point::ConstIterator it = p.begin(), itE = p.end(); it != itE; ++it )
          d += functions::square( (Scalar) *it );
        return ( d > myR2 ) ? 0.0 : myV0;
      }

References myR2, myV0, and DGtal::functions::square().

Field Documentation

myR2

template<typename TPoint, typename TScalar>

Scalar DGtal::functors::BallConstantPointFunction< TPoint, TScalar >::myR2

Definition at line 92 of file Point2ScalarFunctors.h.

Referenced by BallConstantPointFunction(), and operator()().

myV0

template<typename TPoint, typename TScalar>

Scalar DGtal::functors::BallConstantPointFunction< TPoint, TScalar >::myV0

Definition at line 91 of file Point2ScalarFunctors.h.

Referenced by BallConstantPointFunction(), and operator()().

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

• Point2ScalarFunctors.h