DGtal::functors::PositionFunctorFrom2DPoint< Vector, TPosition > Struct Template Reference

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...

#include <DGtal/geometry/curves/ArithmeticalDSSConvexHull.h>

Public Types
typedef TPosition	Position

Public Member Functions
	PositionFunctorFrom2DPoint (const Vector &aShift)
template<typename PointVector >
Position	operator() (const PointVector &aPointVector) const

Private Attributes
Vector	myShift
	shift vector

Detailed Description

template<typename Vector, typename TPosition>
struct DGtal::functors::PositionFunctorFrom2DPoint< Vector, TPosition >

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.

Template Parameters

Vector	a model of 2d vector
TPosition	a model of integer used to locate the points of a DSL

Definition at line 63 of file ArithmeticalDSSConvexHull.h.

Member Typedef Documentation

Position

template<typename Vector , typename TPosition >

typedef TPosition DGtal::functors::PositionFunctorFrom2DPoint< Vector, TPosition >::Position

Definition at line 66 of file ArithmeticalDSSConvexHull.h.

Constructor & Destructor Documentation

PositionFunctorFrom2DPoint()

template<typename Vector , typename TPosition >

DGtal::functors::PositionFunctorFrom2DPoint< Vector, TPosition >::PositionFunctorFrom2DPoint ( const Vector & aShift )

inline

Constructor

Parameters

aShift

shift vector of a naive or standard DSL

Definition at line 75 of file ArithmeticalDSSConvexHull.h.

: myShift(aShift) {}

Member Function Documentation

operator()()

template<typename Vector , typename TPosition >

template<typename PointVector >

Position DGtal::functors::PositionFunctorFrom2DPoint< Vector, TPosition >::operator() ( const PointVector & aPointVector ) const

inline

Returns the position of a point in a digital straight line

Parameters

aPointVector

point/vector at which we compute the position

Returns

position of the point

Template Parameters

PointVector

model of 2D point/vector

Definition at line 84 of file ArithmeticalDSSConvexHull.h.

      {
        return ( - myShift[1] * aPointVector[0]
                 + myShift[0] * aPointVector[1] );
      }

References DGtal::functors::PositionFunctorFrom2DPoint< Vector, TPosition >::myShift.

Field Documentation

myShift

template<typename Vector , typename TPosition >

Vector DGtal::functors::PositionFunctorFrom2DPoint< Vector, TPosition >::myShift

private

shift vector

Definition at line 69 of file ArithmeticalDSSConvexHull.h.

Referenced by DGtal::functors::PositionFunctorFrom2DPoint< Vector, TPosition >::operator()().

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

• ArithmeticalDSSConvexHull.h