text: /*
   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU General Public License
   * as published by the Free Software Foundation; either version 2
   * of the License, or (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write to the Free Software Foundation,
   * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
   */
  
  /** \file
   * \ingroup freestyle
   * \brief Class to build a Node Tree designed to be displayed from a set of strokes structure.
   */
  
  #include "StrokeTesselator.h"
  #include "StrokeAdvancedIterators.h"
  
  #include "../scene_graph/NodeGroup.h"
  #include "../scene_graph/NodeShape.h"
  #include "../scene_graph/OrientedLineRep.h"
  
  namespace Freestyle {
  
  LineRep *StrokeTesselator::Tesselate(Stroke *iStroke)
  {
    if (nullptr == iStroke) {
      return nullptr;
    }
  
    LineRep *line;
    line = new OrientedLineRep();
  
    Stroke::vertex_iterator v, vend;
    if (2 == iStroke->vertices_size()) {
      line->setStyle(LineRep::LINES);
      v = iStroke->vertices_begin();
      StrokeVertex *svA = (*v);
      v++;
      StrokeVertex *svB = (*v);
      Vec3r A((*svA)[0], (*svA)[1], 0);
      Vec3r B((*svB)[0], (*svB)[1], 0);
      line->AddVertex(A);
      line->AddVertex(B);
    }
    else {
      if (_overloadFrsMaterial) {
        line->setFrsMaterial(_FrsMaterial);
      }
  
      line->setStyle(LineRep::LINE_STRIP);
  
      for (v = iStroke->vertices_begin(), vend = iStroke->vertices_end(); v != vend; v++) {
        StrokeVertex *sv = (*v);
        Vec3r V((*sv)[0], (*sv)[1], 0);
        line->AddVertex(V);
      }
    }
    line->setId(iStroke->getId());
    line->ComputeBBox();
  
    return line;
  }
  
  template<class StrokeVertexIterator>
  NodeGroup *StrokeTesselator::Tesselate(StrokeVertexIterator begin, StrokeVertexIterator end)
  {
    NodeGroup *group = new NodeGroup;
    NodeShape *tshape = new NodeShape;
    group->AddChild(tshape);
    // tshape->material().setDiffuse(0.0f, 0.0f, 0.0f, 1.0f);
    tshape->setFrsMaterial(_FrsMaterial);
  
    for (StrokeVertexIterator c = begin, cend = end; c != cend; c++) {
      tshape->AddRep(Tesselate((*c)));
    }
  
    return group;
  }
  
  } /* namespace Freestyle */
  