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

Public Types
typedef DGtal::PointVector< 2, double >	RealVector

typedef RealVector	Value

Public Member Functions
template<typename DSS >
Value	operator() (const DSS &aDSS) const

Detailed Description

Description of class 'NormalizedTangentVectorFromDSS'

Aim: computes the unit vector of a DSS

Definition at line 715 of file SegmentComputerEstimators.h.

Member Typedef Documentation

◆ RealVector

typedef DGtal::PointVector<2,double> DGtal::detail::NormalizedTangentVectorFromDSS::RealVector

Definition at line 718 of file SegmentComputerEstimators.h.

◆ Value

typedef RealVector DGtal::detail::NormalizedTangentVectorFromDSS::Value

Definition at line 719 of file SegmentComputerEstimators.h.

Member Function Documentation

◆ operator()()

template<typename DSS >

Value DGtal::detail::NormalizedTangentVectorFromDSS::operator() ( const DSS & aDSS ) const

inline

Operator()

Returns: normalized tangent

Parameters

aDSS	an instance of segment computer devoted to the DSS recognition.

Template Parameters

DSS	a model of segment computer, which must have methods a() and b() returning the y- and x-component of the tangent vector.

Definition at line 734 of file SegmentComputerEstimators.h.

      {
        double x = NumberTraits<typename DSS::Integer>
          ::castToDouble( aDSS.b() ); 
        double y = NumberTraits<typename DSS::Integer>
          ::castToDouble( aDSS.a() );
        RealVector v(x,y); 
        double norm = v.norm(RealVector::L_2);
        v /= norm; 
        return v;
      }

References DGtal::PointVector< 2, double >::L_2.

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

SegmentComputerEstimators.h