writevoronoidiagramobj Class Reference

#include <d3tessdraw.h>

Inheritance diagram for writevoronoidiagramobj:

Collaboration diagram for writevoronoidiagramobj:

List of all members.

Public Member Functions
	writevoronoidiagramobj (d3tess &tess_)
void	draw ()
	Draw the object.

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Detailed Description

Definition at line 201 of file d3tessdraw.h.

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Constructor & Destructor Documentation

writevoronoidiagramobj::writevoronoidiagramobj

(

d3tess &

tess_

)

[inline]

Definition at line 208 of file d3tessdraw.h.

    : tess(tess_) {}

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Member Function Documentation

void writevoronoidiagramobj::draw

(

)

[virtual]

Draw the object.

Implements gobj.

Definition at line 351 of file d3tessdraw.cpp.

References virtualtriangle::clockwise(), d3tess::cp, gobj::global, d3tess::pt, gobjContainer::push(), virtualtriangle::set(), d3tess::vi, and d3tess::vs.

{

  //  Construct a one to one mapping between a point
  //    and one of its bordering simplices.

  vector<pt3> const & pt(tess.pt);
  uint psz = pt.size();
  uint * fp = new unsigned int[psz];
  for (uint i=0; i<psz; ++i)
    fp[i] = 0;

  vector<simplexD2linked> const & vi(tess.vi);
  uint vsz = tess.vi.size();

  uint k;
  uint p1;
  for (uint i=1; i<vsz; ++i)
  {
    if (vi[i].isnull())
      continue;

    for (k=0; k<3; ++k)
    {
      p1 = vi[i].pi[k];
      if (fp[p1]!=0)
        continue;

      fp[p1] = i;
    }
  } 

  d3tesspreserve preservecp(tess);

  // Use the mapping to construct the voronoi regions by
  // rotating about the point.

  gobjContainer & x = * gobjContainer::global;

  x.push( new gobjglPushAttrib(GL_CURRENT_BIT) );
  x.push( new gobjglPushAttrib(GL_LIGHTING_BIT) );

  x.push( new gobjglDisable(GL_LIGHTING) );

  x.push( new gobjglColor3f(0.0,1.0,0.0) );

  x.push( new gobjglEnable(GL_LINE_STIPPLE) );

  x.push( new gobjglLineStipple(1,0x00FF) );

  x.push( new gobjglBegin(GL_LINES) );

  // Draw voronoi polygons.
  for (uint i=1; i<psz; ++i)
  {
    if (fp[i]==0)
    {
      cout << "error: point " << i << " has no triangle" << endl;
      continue;
    }

    // Let the point i be in the bottom right hand corner of
    //   vs's orientation.
    tess.cp = fp[i];
    tess.vs.set( vi[ fp[i] ].piInverse(i));
    tess.vs.clockwise();
    onevertex();
  }

  x.push( new gobjglEnd() );

  x.push( new gobjglDisable(GL_LINE_STIPPLE) );

  x.push( new gobjglPopAttrib() );
  x.push( new gobjglPopAttrib() );

  delete[] fp;
}

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

• cetessD2/d3tessdraw.h
• cetessD2/d3tessdraw.cpp