Piecewise_Qsc_curve< K > Class Template Reference

#include <qsc_approximation_fcts.hpp>

List of all members.

Public Member Functions

• Piecewise_Qsc_curve ()
• Piecewise_Qsc_curve (const Bezier_curve< K > &B, const double &step=.3)
• void print (viewer< axel, default_env > &axl, const int &k=50)
• Qsc_curve< K > & piece (const unsigned &i)
• point< K > nstart ()
• point< K > nend ()
• int orientation ()

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Detailed Description

template<class K>
class mmx::shape::Piecewise_Qsc_curve< K >

Definition at line 874 of file qsc_approximation_fcts.hpp.

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Constructor & Destructor Documentation

Piecewise_Qsc_curve

(

)

[inline]

Definition at line 877 of file qsc_approximation_fcts.hpp.

{};

Piecewise_Qsc_curve	(	const Bezier_curve< K > &	B,
		const double &	step = .3
	)			[inline]

Definition at line 879 of file qsc_approximation_fcts.hpp.

References Rsc_curve< K >::ccw(), mmx::shape::dot(), Rsc_curve< K >::nend(), Rsc_curve< K >::nstart(), Rsc_curve< K >::orientation(), PI, Rsc_curve< K >::sdiff(), Rsc_curve< K >::seval(), Seq< C, R >::size(), Rsc_curve< K >::support_size(), and VECT.

    {
      Rsc_curve<K> R(B);
      n0= R.nstart();
      n1= R.nend();
      path= R.orientation();

      int k = R.support_size() / step ;
      std::cout<<"got "<<R.support_size() << ", pieces: "<< k <<"\n";      

      K fi, f0= acos( n0[0] );
      if (sin(n0[1])<0) f0= 2*PI- f0;

      if ( path * R.ccw() > 0 ) 
        fi =  path * acos( dot(n0,n1)) / K(k) ;
      else
        fi =  path * (2*PI - acos(dot(n0,n1))) / K(k);

      f0+=fi;
      VECT nn0(n0);
      VECT nnm(cos(f0+ 0.5*fi), sin(f0+ 0.5*fi));
      VECT nn1(cos(f0), sin(f0));

      P<< Qsc_curve<K>(nn0, R.seval(nn0), R.sdiff(nn0),
                       nnm, R.seval(nnm),
                       nn1, R.seval(nn1), R.sdiff(nn1),
                       path );
      //return;

      for (int i=1; i<k; i++ )
      {
        nn0= nn1;
        nnm= VECT(cos(f0+(0.5*fi)), sin(f0+ (0.5*fi)) );
        f0+=fi; 
        nn1= VECT(cos(f0), sin(f0));
        P<< Qsc_curve<K>(nn0, R.seval(nn0), R.sdiff(nn0),
                         nnm, R.seval(nnm),
                         nn1, R.seval(nn1), R.sdiff(nn1),
                         path );
     }
      nn0= nn1;
      nnm= VECT(cos(f0+ (0.5*fi) ), sin(f0+ (0.5*fi)));
//      P<< Qsc_curve<K>(nn0, R.seval(nn0), R.sdiff(nn0),
//                       nnm, R.seval(nnm),
//                       n1, R.seval(n1), R.sdiff(n1),
//                       path );

      std::cout<< P.size() <<"\n";
      //  for( double s=0.0; s

    };

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Member Function Documentation

point<K> nend

(

)

[inline]

Definition at line 940 of file qsc_approximation_fcts.hpp.

{return n1; };

point<K> nstart

(

)

[inline]

Definition at line 939 of file qsc_approximation_fcts.hpp.

{return n0; };

int orientation

(

)

[inline]

Definition at line 941 of file qsc_approximation_fcts.hpp.

{return path; };

Qsc_curve<K>& piece

(

const unsigned &

i

)

[inline]

Definition at line 937 of file qsc_approximation_fcts.hpp.

{return P[i]; };

void print	(	viewer< axel, default_env > &	axl,
		const int &	k = 50
	)			[inline]

Definition at line 931 of file qsc_approximation_fcts.hpp.

References Seq< C, R >::size().

                                           {
//    int i= 1 + k/P.size();
    for ( unsigned j=0; j!=P.size(); j++ )
      P[j].print( axl  );
  };

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

• include/shape/qsc_approximation_fcts.hpp