pathlinesegvec Class Reference

pathlineseg with segment points in an array. Used for minimizing. More...

#include <pathlineseg.h>

Inheritance diagram for pathlinesegvec:

Collaboration diagram for pathlinesegvec:

List of all members.

Public Member Functions
doublec	dist01 ()
doublec	dist02 ()
doublec	operator() ()
	Evaluates distance function to xi[dim].
void	read ()
	Read ps state copying segment points to xi.
void	write ()
	Write to ps with new state.
	pathlinesegvec (pathlineseg &ps_)
	Constructor.
Public Attributes
uint	distfn
	Select the distance function 1 for dist01, 2 for dist02.
pathlineseg &	ps
	Original.
Protected Types
typedef point2< double >	pt2

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Detailed Description

pathlineseg with segment points in an array. Used for minimizing.

Definition at line 49 of file pathlineseg.h.

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Member Typedef Documentation

typedef point2<double> pathlinesegvec::pt2 [protected]

Definition at line 52 of file pathlineseg.h.

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Constructor & Destructor Documentation

pathlinesegvec::pathlinesegvec

(

pathlineseg &

ps_

)

Constructor.

Definition at line 114 of file pathlineseg.cpp.

  : funcstate<double>( (ps_.segments.size()/2+1)*2),
  distfn(2), ps(ps_), pts(ps_.pts), control(ps_.control),
  segments(ps_.segments) 
{
}

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Member Function Documentation

doublec pathlinesegvec::dist01

(

)

Definition at line 148 of file pathlineseg.cpp.

References funcstate< double >::dim, line< PT, PD >::isnormalzero(), line< PT, PD >::nearestpointcapped(), line< PT, PD >::pos, and funcstate< double >::xi.

Referenced by dist02(), and operator()().

{
  double dist=0.0;

  uint kmax=segments.size()/2;
  uint imax=control.size();
  double tpos;
  for (uint k=0; k<kmax; ++k)
  {
//cout << "p" << segments[k] << " p" << segments[k+1] << " ";
    pt2 p0(xi[ k*2 ],xi[k*2+1]);
    pt2 p1(xi[(k+1)*2],xi[(k+1)*2+1]);
//cout << SHOW(p0) << "  " << SHOW(p1) << endl;
    line< pt2, double > Lk(p0,p1,true);
// cout << "ln" << (stringc)Lk << endl;

    for (uint i=0; i<imax; ++i)
    {
      pt2 const & q(pts[control[i]]);
//cout << SHOW(k) << " " << control[i] << " " << q << " ";
      if (Lk.isnormalzero())
      {
//cout << "nm is zero" << endl;
        dist += (Lk.pos-q).dot();
      }
      else
      {
        Lk.nearestpointcapped(tpos,q);
//cout << "nearest point t=" <<  tpos << endl;
        dist += (Lk(tpos)-q).dot();
      }     
//cout << SHOW(dist) << endl;
    }
  }

//cout << SHOW(dim) << endl;
  xi[dim]=dist;
  return xi[dim];
}

doublec pathlinesegvec::dist02

(

)

Definition at line 133 of file pathlineseg.cpp.

References funcstate< double >::dim, dist01(), and funcstate< double >::xi.

Referenced by operator()().

{
  double dist=dist01();
  uint kmax=segments.size()/2;
  for (uint k=0; k<kmax; ++k)
  {
    pt2 p0(xi[ k*2 ],xi[k*2+1]);
    pt2 p1(xi[(k+1)*2],xi[(k+1)*2+1]);
    dist += (p0-p1).dot();    
  }

  xi[dim]=dist;
  return xi[dim];
}

doublec pathlinesegvec::operator()

(

)

[virtual]

Evaluates distance function to xi[dim].

Implements funcstate< double >.

Definition at line 124 of file pathlineseg.cpp.

References dist01(), dist02(), and distfn.

{
  if (distfn==1)
    return dist01();

  assert(distfn==2);
  return dist02();
}

void pathlinesegvec::read

(

)

Read ps state copying segment points to xi.

Definition at line 188 of file pathlineseg.cpp.

References assertreturn, funcstate< double >::dim, and funcstate< double >::xi.

Referenced by pathlinesegtest::test03(), and pathlinesegtest::unittest01().

{
  assertreturn(dim>0);

  xi[0] = pts[segments[0]].x;
  xi[1] = pts[segments[0]].y;

  uint j=2;
  uint imax=segments.size();
  for ( uint i=0; i<imax; ++i,++i)
  {
    assert(i+1<imax);
    xi[j++] = pts[segments[i+1]].x;
    xi[j++] = pts[segments[i+1]].y;
  }
}

void pathlinesegvec::write

(

)

Write to ps with new state.

Definition at line 205 of file pathlineseg.cpp.

References assertreturn, funcstate< double >::dim, and funcstate< double >::xi.

Referenced by pathlinesegtest::test03(), and pathlinesegtest::unittest01().

{
  assertreturn(dim>0);
  assertreturn(segments.empty()==false);

  pts[segments[0]].x = xi[0];
  pts[segments[0]].y = xi[1];

  uint kmax=segments.size()/2;
  for (uint k=0; k<kmax; ++k)
  {
    pts[segments[2*k+1]].x = xi[(k+1)*2];
    pts[segments[2*k+1]].y = xi[(k+1)*2+1];
  }
}

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Member Data Documentation

uint pathlinesegvec::distfn

Select the distance function 1 for dist01, 2 for dist02.

Definition at line 56 of file pathlineseg.h.

Referenced by operator()(), pathlinesegtest::test03(), and pathlinesegtest::unittest01().

pathlineseg& pathlinesegvec::ps

Original.

Definition at line 62 of file pathlineseg.h.

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

• arcs/pathlineseg.h
• arcs/pathlineseg.cpp