StrokeTesselator.cpp

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/*
 * 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.
 */
 
#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 */