pathlineseg Class Reference

Line segement path. More...

#include <pathlineseg.h>

Collaboration diagram for pathlineseg:

List of all members.

Public Types
typedef point2< double >	pt2
typedef point2< double > const	pt2c
Public Member Functions
	pathlineseg ()
	Empty.
	operator stringc const ()
	Serialize.
void	serializeInverse (stringc &str)
	Read and create this class.
doublec	dist01 ()
	sum d(segment k,control[i])^2
doublec	dist02 ()
	sum ((segment length[k])^2) + dist01.
Public Attributes
vector< pt2 >	pts
	Points, pts[0] is not used as 0 is no point.
vector< uint >	control
	Indexes to control points.
vector< uint >	segments
	Pairs of indexes to line segments.

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Detailed Description

Line segement path.

Definition at line 14 of file pathlineseg.h.

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Member Typedef Documentation

typedef point2<double> pathlineseg::pt2

Definition at line 18 of file pathlineseg.h.

typedef point2<double> const pathlineseg::pt2c

Definition at line 19 of file pathlineseg.h.

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Constructor & Destructor Documentation

pathlineseg::pathlineseg

(

)

Empty.

Definition at line 10 of file pathlineseg.cpp.

References pts.

{
  pts.push_back( pt2() );
  
}

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Member Function Documentation

doublec pathlineseg::dist01

(

)

sum d(segment k,control[i])^2

Definition at line 73 of file pathlineseg.cpp.

References control, line< PT, PD >::isnormalzero(), line< PT, PD >::nearestpointcapped(), line< PT, PD >::pos, pts, and segments.

Referenced by dist02().

{
  double dist=0.0;

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

//cout << SHOW(p0) << "  " << SHOW(p1) << endl;
//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;
    }

  }

  return dist;
}

doublec pathlineseg::dist02

(

)

sum ((segment length[k])^2) + dist01.

Definition at line 59 of file pathlineseg.cpp.

References dist01(), pts, and segments.

{
  double dist=dist01();
  uint kmax=segments.size()/2;
  for (uint k=0; k<kmax; ++k)
  {
    pt2c & p0(pts[ segments[k*2] ]);
    pt2c & p1(pts[ segments[k*2+1] ]);
    dist += (p0-p1).dot();    
  }

  return dist;
}

pathlineseg::operator stringc const

(

)

Serialize.

Definition at line 16 of file pathlineseg.cpp.

References control, printvecfunc(), pts, and segments.

{
  string str;
 
  str << "<path>\n";
// TODO optionally write if variable empty
  str << "<info>Path line segements</info>\n";

  str << "<points2D>\n";
  assert(pts.empty()==false);
  if (pts.empty()==false)
    { str << printvecfunc(pts.begin(),pts.size()) << "\n"; }
  str << "</points2D>\n";
  str << "<control>\n";
  if (control.empty()==false)
    { str << printvecfunc(control.begin(),control.size()) << "\n"; }
  str << "</control>\n";
  str << "<segments>\n";
  if (segments.empty()==false)
    { str << printvecfunc(segments.begin(),segments.size()) << "\n"; }
  str << "</segments>\n";
  str << "</path>";

  return str;
}

void pathlineseg::serializeInverse

(

stringc &

str

)

Read and create this class.

Definition at line 42 of file pathlineseg.cpp.

References control, stringtagparser::data(), pts, and segments.

Referenced by pathlinesegtest::test01(), pathlinesegtest::test02(), and pathlinesegtest::test03().

{
  //assert(false);
  pts.clear();
  control.clear();
  segments.clear();

  stringtagparser pars(str);

  string s1 = pars.data("info");
  //cout << "*info=" << s1 << "*" << endl;
  string s2=pars.data("points2D");
  vectorstring::serializeInverse(pts,s2);
  vectorstring::serializeInverse(control,pars.data("control"));
  vectorstring::serializeInverse(segments,pars.data("segments"));
}

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Member Data Documentation

vector<uint> pathlineseg::control

Indexes to control points.

Definition at line 25 of file pathlineseg.h.

Referenced by dist01(), operator stringc const(), serializeInverse(), and pathlinesegdraw::update().

vector< pt2 > pathlineseg::pts

Points, pts[0] is not used as 0 is no point.

Definition at line 22 of file pathlineseg.h.

Referenced by dist01(), dist02(), operator stringc const(), pathlineseg(), serializeInverse(), and pathlinesegdraw::update().

vector<uint> pathlineseg::segments

Pairs of indexes to line segments.

eg 2 4 5 6 .. is (2,4), (5,6), ..

Definition at line 27 of file pathlineseg.h.

Referenced by dist01(), dist02(), operator stringc const(), serializeInverse(), pathlinesegtest::test02(), and pathlinesegdraw::update().

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

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