DGtal::detail::AffineGeometryScalarOperations< float > Struct Reference

Aim: Internal class used by AffineGeometry to differentiate operations on lattice points and operations on points with floating-point coordinates. This specialization assume float for coordinates. More...

#include <DGtal/geometry/tools/AffineGeometry.h>

Static Public Member Functions
static std::pair< float, float >	getMultipliers (float a, float b)
static float	gcd (float, float)
static float	lcmPositive (float, float)
static bool	isNonZero (float x, double tol)

Friends
template<typename T >
struct	DGtal::AffineGeometry
template<typename T >
struct	DGtal::AffineBasis

Detailed Description

Aim: Internal class used by AffineGeometry to differentiate operations on lattice points and operations on points with floating-point coordinates. This specialization assume float for coordinates.

Description of template class 'AffineGeometryScalarOperations'

Definition at line 323 of file AffineGeometry.h.

Member Function Documentation

gcd()

static float DGtal::detail::AffineGeometryScalarOperations< float >::gcd ( float  , float    )

inlinestatic

Returns

1.0f

Definition at line 343 of file AffineGeometry.h.

      {
        return 1.0f;
      }

getMultipliers()

static std::pair< float, float > DGtal::detail::AffineGeometryScalarOperations< float >::getMultipliers ( float  a, float  b  )

inlinestatic

Parameters

[in]	a	any number
[in]	b	any number

Returns

the pair ( b, a ), which allows to cancel a component in a Gauss pivoting algorithm.

Definition at line 334 of file AffineGeometry.h.

      {
        return (b >= 0 )
          ? std::make_pair( b, a )
          : std::make_pair( -b, -a );
      }

isNonZero()

static bool DGtal::detail::AffineGeometryScalarOperations< float >::isNonZero ( float  x, double  tol  )

inlinestatic

Parameters

[in]	x	any number
[in]	tol	the accepted tolerance value below which the number is considered null (typically 1e-12).

Returns

'true' iff x is non zero.

Definition at line 363 of file AffineGeometry.h.

      {
        const double dx = double(x);
        return (dx > tol) || ( dx < -tol );
      }

lcmPositive()

static float DGtal::detail::AffineGeometryScalarOperations< float >::lcmPositive ( float  , float    )

inlinestatic

Returns

1.0f

Definition at line 350 of file AffineGeometry.h.

      {
        return 1.0f;
      }

Friends And Related Symbol Documentation

DGtal::AffineBasis

template<typename T >

friend struct DGtal::AffineBasis

friend

Definition at line 326 of file AffineGeometry.h.

DGtal::AffineGeometry

template<typename T >

friend struct DGtal::AffineGeometry

friend

Definition at line 325 of file AffineGeometry.h.

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

• AffineGeometry.h