DGtal::TangentFromDSS2DFunctor< DSS, LambdaFunction > Class Template Reference

#include <DGtal/geometry/curves/estimation/FunctorsLambdaMST.h>

Data Structures
struct	Value

Public Types
typedef PointVector< 2, double >	RealVector
typedef DSS	TDSS

Public Member Functions
Value	operator() (const TDSS &aDSS, const int &indexOfPointInDSS, const int &dssLen) const

Private Member Functions
	BOOST_CONCEPT_ASSERT ((concepts::CUnaryFunctor< LambdaFunction, double, double >))

Private Attributes
LambdaFunction	lambdaFunctor

Detailed Description

template<typename DSS, typename LambdaFunction>
class DGtal::TangentFromDSS2DFunctor< DSS, LambdaFunction >

Description of class 'TangentFromDSS2DFunctor' – model of CLMSTTangentFromDSS. Aim: Provide a functor which calculate from digital straight segment its direction and eccentricity around a given point.

Template Parameters

DSS	digital straight segment recognition algorithm
LambdaFunction	model of CLambdaFunctor

See also

CLambdaFunctor.h

Definition at line 112 of file FunctorsLambdaMST.h.

Member Typedef Documentation

RealVector

template<typename DSS , typename LambdaFunction >

typedef PointVector<2, double> DGtal::TangentFromDSS2DFunctor< DSS, LambdaFunction >::RealVector

Definition at line 117 of file FunctorsLambdaMST.h.

TDSS

template<typename DSS , typename LambdaFunction >

typedef DSS DGtal::TangentFromDSS2DFunctor< DSS, LambdaFunction >::TDSS

Definition at line 118 of file FunctorsLambdaMST.h.

Member Function Documentation

BOOST_CONCEPT_ASSERT()

template<typename DSS , typename LambdaFunction >

DGtal::TangentFromDSS2DFunctor< DSS, LambdaFunction >::BOOST_CONCEPT_ASSERT ( (concepts::CUnaryFunctor< LambdaFunction, double, double >) )

private

operator()()

template<typename DSS , typename LambdaFunction >

Value DGtal::TangentFromDSS2DFunctor< DSS, LambdaFunction >::operator() ( const TDSS & aDSS, const int & indexOfPointInDSS, const int & dssLen ) const

inline

Calculate a direction of the 2D DSS and an eccentricity of a given point in this DSS.

Parameters

aDSS	digital straight segment
indexOfPointInDSS	index of given point in aDSS
dssLen	length of aDSS

Definition at line 143 of file FunctorsLambdaMST.h.

  {
    Value result;
    double norm = std::sqrt ( aDSS.a() * aDSS.a() + aDSS.b() * aDSS.b() );
    result.second = lambdaFunctor ( (double)indexOfPointInDSS / (double)dssLen );
    if ( norm > 0. )
    {
      result.first[0] = result.second * aDSS.b() / norm;
      result.first[1] = result.second * aDSS.a() / norm;
    }
    else
    {
      result.first[0] = 0.;
      result.first[1] = 0.;
    }
    return result;
  }

References DGtal::TangentFromDSS2DFunctor< DSS, LambdaFunction >::lambdaFunctor.

Field Documentation

lambdaFunctor

template<typename DSS , typename LambdaFunction >

LambdaFunction DGtal::TangentFromDSS2DFunctor< DSS, LambdaFunction >::lambdaFunctor

private

Definition at line 162 of file FunctorsLambdaMST.h.

Referenced by DGtal::TangentFromDSS2DFunctor< DSS, LambdaFunction >::operator()().

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

• FunctorsLambdaMST.h