path: root/source/blender/freestyle/intern/app/Controller.cpp

//
//  Copyright (C) : Please refer to the COPYRIGHT file distributed 
//   with this source distribution. 
//
//  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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
//
///////////////////////////////////////////////////////////////////////////////

// Must be included before any QT header, because of moc
#include "../system/PythonInterpreter.h"

#include <fstream>
#include <float.h>
#include <qfileinfo.h>
#include <qprocess.h>
#include <qstring.h>

#include "AppGLWidget.h"
#include "AppMainWindow.h"
#include "AppProgressBar.h"
#include "AppStyleWindow.h"
#include "AppOptionsWindow.h"
#include "AppAboutWindow.h"
#include "AppCanvas.h"
#include "AppConfig.h"
#include "AppDensityCurvesWindow.h"

#include "../system/StringUtils.h"
#include "../scene_graph/MaxFileLoader.h"
#include "../scene_graph/NodeShape.h"
#include "../scene_graph/NodeTransform.h"
#include "../scene_graph/NodeDrawingStyle.h"
#include "../winged_edge/WingedEdgeBuilder.h"
#include "../winged_edge/WEdge.h"
#include "../scene_graph/VertexRep.h"
#include "../winged_edge/WXEdgeBuilder.h"
#include "../scene_graph/ScenePrettyPrinter.h"
#include "../winged_edge/WFillGrid.h"

#include "../view_map/ViewMapTesselator.h"
#include "../stroke/StrokeTesselator.h"
#include "../view_map/ViewMapIO.h"
#include "Controller.h"
#include "../view_map/ViewMap.h"
#include "../winged_edge/Curvature.h"
#include "QGLBasicWidget.h"
#include <qimage.h>
#include "../image/Image.h"
#include "../view_map/SteerableViewMap.h"
#include "../stroke/PSStrokeRenderer.h"
#include "../stroke/TextStrokeRenderer.h"
#include "../stroke/StyleModule.h"

#ifndef WIN32
//# include "GLXOffscreenBuffer.h"
//# include "GLXOffscreenBuffer.h"
#endif

Controller::Controller()
{
  const QString sep(Config::DIR_SEP.c_str());
  const QString filename = Config::Path::getInstance()->getHomeDir() + sep +
    Config::OPTIONS_DIR + sep + Config::OPTIONS_CURRENT_DIRS_FILE;
  _current_dirs = new ConfigIO(filename, Config::APPLICATION_NAME + "CurrentDirs", true);

  _RootNode = new NodeGroup;
  _RootNode->addRef();
  
  _SilhouetteNode = NULL;
  //_ProjectedSilhouette = NULL;
  //_VisibleProjectedSilhouette = NULL;
  
  _DebugNode = new NodeGroup;
  _DebugNode->addRef();

  _winged_edge = NULL;
  
  _pMainWindow = NULL;
  _pView = NULL;

  _edgeTesselationNature = (Nature::SILHOUETTE | Nature::BORDER | Nature::CREASE);

  _ProgressBar = new AppProgressBar;
  _SceneNumFaces = 0;
  _minEdgeSize = DBL_MAX;
  _bboxDiag = 0;
  
  _ViewMap = 0;

  _Canvas = 0;

  _VisibilityAlgo = ViewMapBuilder::ray_casting;
  //_VisibilityAlgo = ViewMapBuilder::ray_casting_fast;

  _Canvas = new AppCanvas;

  _inter = new PythonInterpreter;
  _EnableQI = true;
  _ComputeRidges = true;
  _ComputeSteerableViewMap = false;
  _ComputeSuggestive = true;
  _sphereRadius = 1.0;
}

Controller::~Controller()
{
  if(NULL != _RootNode)
    {
      int ref = _RootNode->destroy();
      if(0 == ref)
	delete _RootNode;
    }
  
  if(NULL != _SilhouetteNode)
    {
      int ref = _SilhouetteNode->destroy();
      if(0 == ref)
	delete _SilhouetteNode;
    }
  
  if(NULL != _DebugNode)
    {
      int ref = _DebugNode->destroy();
      if(0 == ref)
	delete _DebugNode;
    }

  //  if(NULL != _VisibleProjectedSilhouette)
  //    {
  //      int ref = _VisibleProjectedSilhouette->destroy();
  //      if(0 == ref)
  //	delete _VisibleProjectedSilhouette;
  //    }
  
  //  if(NULL != _ProjectedSilhouette)
  //    {
  //      int ref = _ProjectedSilhouette->destroy();
  //      if(0 == ref)
  //	delete _ProjectedSilhouette;
  //    }

  if(NULL != _ProgressBar)
    {
      delete _ProgressBar;
      _ProgressBar = NULL;
    }

  if(_winged_edge) {
    delete _winged_edge;
    _winged_edge = NULL;
  }

  if(0 != _ViewMap)
    {
      delete _ViewMap;
      _ViewMap = 0;
    }

  if(0 != _Canvas)
    {
      delete _Canvas;
      _Canvas = 0;
    }

  if (_inter) {
    delete _inter;
    _inter = NULL;
  }

  //  if(_pDensityCurvesWindow){
  //    delete _pDensityCurvesWindow;
  //    _pDensityCurvesWindow = 0;
  //  }
  delete _current_dirs;
}

void Controller::SetView(AppGLWidget *iView)
{
  if(NULL == iView)
    return;
  
  _pView = iView;
  //_pView2D->setGeometry(_pView->rect());
  _Canvas->setViewer(_pView);
}

void Controller::SetMainWindow(AppMainWindow *iMainWindow)
{
  _pMainWindow = iMainWindow;
  _ProgressBar->setQTProgressBar(_pMainWindow->qtProgressDialog());
	_pStyleWindow = new AppStyleWindow(_pMainWindow, "StyleWindow");
  _pOptionsWindow = new AppOptionsWindow(_pMainWindow, "MainWindow");
  _pDensityCurvesWindow = new AppDensityCurvesWindow(_pMainWindow, "MainWindow");
}

int Controller::Load3DSFile(const char *iFileName)
{
  if (_pView)
    _pView->setUpdateMode(false);

  //_pMainWindow->InitProgressBar("Loading 3DS Model", 4);
  _ProgressBar->reset();
  _ProgressBar->setLabelText("Loading 3DS Model");
  _ProgressBar->setTotalSteps(3);
  _ProgressBar->setProgress(0);

  //_pMainWindow->setProgressLabel("Reading File");
  //_pMainWindow->setProgressLabel("Cleaning mesh");
  
  _pMainWindow->DisplayMessage("Reading File");
  _pMainWindow->DisplayMessage("Cleaning Mesh");
  
  MaxFileLoader loader3DS(iFileName);
  //_RootNode->AddChild(BuildSceneTest());
  
  _Chrono.start();
  
  NodeGroup *maxScene = loader3DS.Load();

  if (maxScene == NULL) {
    _ProgressBar->setProgress(3);
    return 1;
  }

  printf("Mesh cleaning    : %lf\n", _Chrono.stop());
  _SceneNumFaces += loader3DS.numFacesRead();

  if(loader3DS.minEdgeSize() < _minEdgeSize)
    {
      _minEdgeSize = loader3DS.minEdgeSize();
      _EPSILON = _minEdgeSize*1e-6;
      if(_EPSILON < DBL_MIN)
	_EPSILON = 0.0;
    }

  cout << "Epsilon computed : " << _EPSILON << endl;

  _ProgressBar->setProgress(1);

  // DEBUG
//   ScenePrettyPrinter spp;
//   maxScene->accept(spp);

  _RootNode->AddChild(maxScene);
  _RootNode->UpdateBBox(); // FIXME: Correct that by making a Renderer to compute the bbox

  _pView->setModel(_RootNode);
  _pView->FitBBox();
  
  _pMainWindow->DisplayMessage("Building Winged Edge structure");
  _Chrono.start();

  
  WXEdgeBuilder wx_builder;
  maxScene->accept(wx_builder);
  _winged_edge = wx_builder.getWingedEdge();

  printf("WEdge building   : %lf\n", _Chrono.stop());

  _ProgressBar->setProgress(2);

  _pMainWindow->DisplayMessage("Building Grid");
 _Chrono.start();

  _Grid.clear();
  Vec3r size;
  for(unsigned int i=0; i<3; i++)
    {
      size[i] = fabs(_RootNode->bbox().getMax()[i] - _RootNode->bbox().getMin()[i]);
      size[i] += size[i]/10.0; // let make the grid 1/10 bigger to avoid numerical errors while computing triangles/cells intersections
      if(size[i]==0){
          cout << "Warning: the bbox size is 0 in dimension "<<i<<endl;
      }
    }
  _Grid.configure(Vec3r(_RootNode->bbox().getMin() - size / 20.0), size,
		  _SceneNumFaces);

  // Fill in the grid:
  WFillGrid fillGridRenderer(&_Grid, _winged_edge);
  fillGridRenderer.fillGrid();

  printf("Grid building    : %lf\n", _Chrono.stop());
  
  // DEBUG
//   _Grid.displayDebug();

  _ProgressBar->setProgress(3);
   
  _pView->setDebug(_DebugNode);

  //delete stuff
  //  if(0 != ws_builder)
  //    {
  //      delete ws_builder;
  //      ws_builder = 0;
  //    }
  _pView->updateGL();
  QFileInfo qfi(iFileName);
  string basename((const char*)qfi.fileName().toAscii().data());
  _ListOfModels.push_back(basename);

  cout << "Triangles nb     : " << _SceneNumFaces << endl;
  _bboxDiag = (_RootNode->bbox().getMax()-_RootNode->bbox().getMin()).norm();
  cout << "Bounding Box     : " << _bboxDiag << endl;
  return 0;
}

void Controller::CloseFile()
{
  WShape::SetCurrentId(0);
  _pView->DetachModel();
  _ListOfModels.clear();
  if(NULL != _RootNode)
    {
      int ref = _RootNode->destroy();
      if(0 == ref)
	_RootNode->addRef();
    
      _RootNode->clearBBox();
    }
  
  _pView->DetachSilhouette();
  if (NULL != _SilhouetteNode)
    {
      int ref = _SilhouetteNode->destroy();
      if(0 == ref)
	{
	  delete _SilhouetteNode;
	  _SilhouetteNode = NULL;
	}
    }
  //  if(NULL != _ProjectedSilhouette)
  //    {
  //      int ref = _ProjectedSilhouette->destroy();
  //      if(0 == ref)
  //	{
  //	  delete _ProjectedSilhouette;
  //	  _ProjectedSilhouette = NULL;
  //	}
  //    }
  //  if(NULL != _VisibleProjectedSilhouette)
  //    {
  //      int ref = _VisibleProjectedSilhouette->destroy();
  //      if(0 == ref)
  //	{
  //	  delete _VisibleProjectedSilhouette;
  //	  _VisibleProjectedSilhouette = NULL;
  //	}
  //  }
  
  _pView->DetachDebug();
  if(NULL != _DebugNode)
    {
      int ref = _DebugNode->destroy();
      if(0 == ref)
	_DebugNode->addRef();
    }
  
  if(_winged_edge) {
    delete _winged_edge;
    _winged_edge = NULL;
  }

  // We deallocate the memory:
  if(NULL != _ViewMap)
    {
      delete _ViewMap;
      _ViewMap = 0;
    }

  // clears the canvas
  _Canvas->Erase();

  // clears the grid
  _Grid.clear();
  _SceneNumFaces = 0;
  _minEdgeSize = DBL_MAX;
  //  _pView2D->DetachScene();
  //  if(NULL != _SRoot)
  //  {
  //    int ref = _SRoot->destroy();
  //    if(0 == ref)
  //    {
  //      //_SRoot->addRef();
  //      delete _SRoot;
  //      _SRoot = NULL;
  //    }
  //  }
}

//  static const streamsize buffer_size = 512 * 1024;

void Controller::SaveViewMapFile(const char *oFileName)
{
  if (!_ViewMap)
    return;

  ofstream ofs(oFileName, ios::binary);
  if (!ofs.is_open()) {
    _pMainWindow->DisplayMessage("Error: Cannot save this file");
    cerr << "Error: Cannot save this file" << endl;
    return;
  }
//    char buffer[buffer_size];
//  #if defined(__GNUC__) && (__GNUC__ < 3)
//    ofs.rdbuf()->setbuf(buffer, buffer_size);
//  # else
//    ofs.rdbuf()->pubsetbuf(buffer, buffer_size);
//  #endif
  _Chrono.start();

  ofs << Config::VIEWMAP_MAGIC.toAscii().data() << endl << Config::VIEWMAP_VERSION.toAscii().data() << endl;

  // Write the models filenames
  ofs << _ListOfModels.size() << endl;
  for (vector<string>::const_iterator i = _ListOfModels.begin(); i != _ListOfModels.end(); i++)
    ofs << *i << "\n";

  // Save the camera position
  float position[3];
  float orientation[4];
  _pView->getCameraState(position, orientation);
  ofs.write((char*)position, 3 * sizeof(*position));
  ofs.write((char*)orientation, 4 * sizeof(*orientation));

  // Write ViewMap
  if (ViewMapIO::save(ofs, _ViewMap, _ProgressBar)) {
    _Chrono.stop();
    cerr << "Error: Cannot save this file" << endl;
    return;
  }

  real d = _Chrono.stop();
  cout << "ViewMap saving   : " << d << endl;
}

void Controller::LoadViewMapFile(const char *iFileName, bool only_camera)
{
  ifstream ifs(iFileName, ios::binary);
  if (!ifs.is_open()) {
    _pMainWindow->DisplayMessage("Error: Cannot load this file");
    cerr << "Error: Cannot load this file" << endl;
    return;
  }
//    char buffer[buffer_size];
//  #if defined(__GNUC__) && (__GNUC__ < 3)
//    ifs.rdbuf()->setbuf(buffer, buffer_size);
//  # else
//    ifs.rdbuf()->pubsetbuf(buffer, buffer_size);
//  #endif

  // Test File Magic and version
  char tmp_buffer[256];
  QString test;
  
  ifs.getline(tmp_buffer, 255);
  test = tmp_buffer;
  if (test != Config::VIEWMAP_MAGIC) {
    _pMainWindow->DisplayMessage(
		(QString("Error: This is not a valid .") + Config::VIEWMAP_EXTENSION + QString(" file")).toAscii().data());
    cerr << "Error: This is not a valid ." << Config::VIEWMAP_EXTENSION.toAscii().data() << " file" << endl;
    return;
  }
  ifs.getline(tmp_buffer, 255);
  test = tmp_buffer;
  if (test != Config::VIEWMAP_VERSION && !only_camera) {
    _pMainWindow->DisplayMessage(
		(QString("Error: This version of the .") + Config::VIEWMAP_EXTENSION + QString(" file format is no longer supported")).toAscii().data());
    cerr << "Error: This version of the ." << Config::VIEWMAP_EXTENSION.toAscii().data() << " file format is no longer supported" << endl;
    return;
  }

  // Read the models filenames and open them (if not already done)
  string tmp;
  vector<string> tmp_vec;
  unsigned models_nb, i;

  ifs.getline(tmp_buffer, 255);
  models_nb = atoi(tmp_buffer);
  for (i = 0; i < models_nb; i++) {
    ifs.getline(tmp_buffer, 255);
    tmp = tmp_buffer;
    tmp_vec.push_back(tmp);
  }
  if (_ListOfModels != tmp_vec && !only_camera) {
    CloseFile();
    vector<string> pathnames;
    int err = 0;
    for (vector<string>::const_iterator i = tmp_vec.begin(); i != tmp_vec.end(); i++)
      {
	pathnames.clear();
	StringUtils::getPathName(ViewMapIO::Options::getModelsPath(), *i, pathnames);
	for (vector<string>::const_iterator j = pathnames.begin(); j != pathnames.end(); j++)
	  if (!(err = Load3DSFile(j->c_str())))
	    break;
	if (err) {
	  _pMainWindow->DisplayMessage("Error: cannot find the right model(s)");
	  cerr << "Error: cannot find model \"" << *i << "\" - check the path in the Options" << endl;
	  return;
	}
      }
  }

  // Set the camera position
  float position[3];
  float orientation[4];
  ifs.read((char*)position, 3 * sizeof(*position));
  ifs.read((char*)orientation, 4 * sizeof(*orientation));
  _pView->setCameraState(position, orientation);
  _pView->saveCameraState();

  if (only_camera) {
    _pMainWindow->DisplayMessage("Camera parameters loaded");
    return;
  }

  // Reset ViewMap
  if(NULL != _ViewMap)
    {
      delete _ViewMap;
      _ViewMap = 0;
    }
  _pView->DetachSilhouette();
  if (NULL != _SilhouetteNode)
    {
      int ref = _SilhouetteNode->destroy();
      if(0 == ref)
	delete _SilhouetteNode;
    }
  //  if(NULL != _ProjectedSilhouette)
  //    {
  //      int ref = _ProjectedSilhouette->destroy();
  //      if(0 == ref)
  //	delete _ProjectedSilhouette;
  //    }
  //  if(NULL != _VisibleProjectedSilhouette)
  //    {
  //      int ref = _VisibleProjectedSilhouette->destroy();
  //      if(0 == ref)
  //	{
  //	  delete _VisibleProjectedSilhouette;
  //	  _VisibleProjectedSilhouette = 0;
  //	}
   // }
  _ViewMap = new ViewMap();

  // Read ViewMap
  _Chrono.start();
  if (ViewMapIO::load(ifs, _ViewMap, _ProgressBar)) {
    _Chrono.stop();
    _pMainWindow->DisplayMessage(
		(QString("Error: This is not a valid .") + Config::VIEWMAP_EXTENSION + QString(" file")).toAscii().data());
    cerr << "Error: This is not a valid ." << Config::VIEWMAP_EXTENSION.toAscii().data() << " file" << endl;
    return;
  }

  // Update display
  _pMainWindow->DisplayMessage("Updating display");
  ViewMapTesselator3D sTesselator3d;
  //ViewMapTesselator2D sTesselator2d;
  //sTesselator2d.setNature(_edgeTesselationNature);
  sTesselator3d.setNature(_edgeTesselationNature);
  
  // Tesselate the 3D edges:
  _SilhouetteNode = sTesselator3d.Tesselate(_ViewMap);
  _SilhouetteNode->addRef();
  
  // Tesselate 2D edges
  //  _ProjectedSilhouette = sTesselator2d.Tesselate(_ViewMap);
  //  _ProjectedSilhouette->addRef();
  //  
  _pView->AddSilhouette(_SilhouetteNode);
  //_pView->Add2DSilhouette(_ProjectedSilhouette);

  // Update options window
  _pOptionsWindow->updateViewMapFormat();

  real d = _Chrono.stop();
  cout << "ViewMap loading  : " << d << endl;

  // Compute the Directional ViewMap:
  if(_ComputeSteerableViewMap){
    ComputeSteerableViewMap();
  }

  // Reset Style modules modification flags
  resetModified(true);
}

void Controller::ComputeViewMap()
{

  if (!_ListOfModels.size())
    return;
  
  if(NULL != _ViewMap)
    {
      delete _ViewMap;
      _ViewMap = 0;
    }

  _pView->DetachDebug();
  if(NULL != _DebugNode)
    {
      int ref = _DebugNode->destroy();
      if(0 == ref)
	_DebugNode->addRef();
    }
  

  _pView->DetachSilhouette();
  if (NULL != _SilhouetteNode)
    {
      int ref = _SilhouetteNode->destroy();
      if(0 == ref)
	delete _SilhouetteNode;
    }
  //  if(NULL != _ProjectedSilhouette)
  //    {
  //      int ref = _ProjectedSilhouette->destroy();
  //      if(0 == ref)
  //	delete _ProjectedSilhouette;
  //    }
  //  if(NULL != _VisibleProjectedSilhouette)
  //    {
  //      int ref = _VisibleProjectedSilhouette->destroy();
  //      if(0 == ref)
  //	{
  //	  delete _VisibleProjectedSilhouette;
  //	  _VisibleProjectedSilhouette = 0;
  //	}
  //  }
  
  // retrieve the 3D viewpoint and transformations information
  //----------------------------------------------------------
  // Save the viewpoint context at the view level in order 
  // to be able to restore it later:
  _pView->saveCameraState();

  // Restore the context of view:
  // we need to perform all these operations while the 
  // 3D context is on.
  _pView->set3DContext();
  float src[3] = { 0, 0, 0 };
  float vp_tmp[3];
  _pView->camera()->getWorldCoordinatesOf(src, vp_tmp);
  Vec3r vp(vp_tmp[0], vp_tmp[1], vp_tmp[2]);

  real mv[4][4];
  _pView->RetriveModelViewMatrix((real *)mv);
  // retrieve the projection matrix:
  real proj[4][4];
  _pView->RetrieveProjectionMatrix((real *)proj);
  int viewport[4];
  _pView->RetrieveViewport(viewport);  
  real focalLength = _pView->GetFocalLength();

  // Flag the WXEdge structure for silhouette edge detection:
  //----------------------------------------------------------

  _Chrono.start();
  if (_SceneNumFaces > 2000)
    edgeDetector.setProgressBar(_ProgressBar);
 
  edgeDetector.setViewpoint(Vec3r(vp));
  edgeDetector.enableRidgesAndValleysFlag(_ComputeRidges);
  edgeDetector.enableSuggestiveContours(_ComputeSuggestive);
  edgeDetector.setSphereRadius(_sphereRadius);
  edgeDetector.setSuggestiveContourKrDerivativeEpsilon(_suggestiveContourKrDerivativeEpsilon);
  edgeDetector.processShapes(*_winged_edge);

  real duration = _Chrono.stop();
  printf("Feature lines    : %lf\n", duration);

  // FIXME GLDEBUG
  //====================================================================
  //  NodeShape * silhouetteDebugShape = new NodeShape;
  //  _DebugNode->AddChild(silhouetteDebugShape);
  //  vector<WShape*>& wshapes = _winged_edge->getWShapes();
  //  vector<WShape*>::iterator ws, wsend;
  //  for(ws=wshapes.begin(), wsend=wshapes.end();
  //  ws!=wsend;
  //  ++ws){
    // smooth
//        vector<WVertex*>& wvertices = (*ws)->GetVertexList();
//        unsigned modulo(1), currentIndex(0);
//        for(vector<WVertex*>::iterator wv=wvertices.begin(), wvend=wvertices.end();
//        wv!=wvend;
//        ++wv){
//          if(currentIndex%modulo != 0){
//            ++currentIndex;
//            continue;
//          }else
//            ++currentIndex;
         
//          WVertex::face_iterator fit=(*wv)->faces_begin();
//          WVertex::face_iterator fitend=(*wv)->faces_end();
//          for(; fit!=fitend; ++fit){
//            WXFace *wxf = dynamic_cast<WXFace*>(*fit);
//            unsigned vindex = wxf->GetIndex((*wv));
//            vector<WXFaceLayer*> flayers;
//            wxf->retrieveSmoothLayers(Nature::RIDGE, flayers);
//            for(vector<WXFaceLayer*>::iterator fl=flayers.begin(), flend=flayers.end();
//            fl!=flend;
//            ++fl){
//              Vec3r c[3];
//              unsigned index = 0;
//              for(unsigned i=0; i<3; ++i){
// 	       //               real d = (*fl)->dotP(i);
//                real d  = ((WXVertex*)(wxf->GetVertex(i)))->curvatures()->Kr;
//                if(d < 0){
//                  index = 1;
//                  d = -d;
//                }
//                else
//                  index = 0;
//                c[i][index] = d;
//              }  
//            TriangleRep * frep = new TriangleRep( wxf->GetVertex(0)->GetVertex(),
//              c[0],
//              wxf->GetVertex(1)->GetVertex(),
//              c[1],
//              wxf->GetVertex(2)->GetVertex(),
//              c[2]);
//            silhouetteDebugShape->AddRep(frep);
    //
    //        //
    //        Vec3r e2 = ((Face_Curvature_Info*)(*fl)->userdata)->vec_curvature_info[vindex]->e2;
    //        Vec3r e1 = ((Face_Curvature_Info*)(*fl)->userdata)->vec_curvature_info[vindex]->e1;
    //        OrientedLineRep * olrep1 = new OrientedLineRep((*wv)->GetVertex(), (*wv)->GetVertex()+e1);
    //        OrientedLineRep * olrep2 = new OrientedLineRep((*wv)->GetVertex(), (*wv)->GetVertex()+e2);
    //        silhouetteDebugShape->AddRep(olrep1);
    //        silhouetteDebugShape->AddRep(olrep2);
    //        WOEdge * oppositeEdge;
    //        if(!(wxf->getOppositeEdge(*wv, oppositeEdge)))
    //          continue;
    //        Vec3r v1v2 = oppositeEdge->GetbVertex()->GetVertex() - oppositeEdge->GetaVertex()->GetVertex();
    //        OrientedLineRep * opplrep = new OrientedLineRep(oppositeEdge->GetaVertex()->GetVertex(), oppositeEdge->GetaVertex()->GetVertex()+v1v2);
    //        silhouetteDebugShape->AddRep(opplrep);
    //        GeomUtils::intersection_test res;
    //        real t;
    //        res = GeomUtils::intersectRayPlane(oppositeEdge->GetaVertex()->GetVertex(), v1v2,
    //          e2, -((*wv)->GetVertex()*e2),
    //          t,1.e-06);
    //        if((res == GeomUtils::DO_INTERSECT) && (t>=0.0) && (t<=1.0)){
    //          Vec3r inter(oppositeEdge->GetaVertex()->GetVertex() + t*v1v2);
    //          VertexRep * irep = new VertexRep(inter.x(), inter.y(), inter.z());
    //          irep->setPointSize(5.0);
    //          silhouetteDebugShape->AddRep(irep);
    //        }     
// 	 }  
//        }
//        //break;
//   }

  //  vector<WFace*>& wfaces = (*ws)->GetFaceList();
  //    for(vector<WFace*>::iterator wf=wfaces.begin(), wfend=wfaces.end();
  //    wf!=wfend;
  //    ++wf){
  //      WXFace *wxf = dynamic_cast<WXFace*>(*wf);
  //      vector<WXSmoothEdge*> smoothEdges;
  //      wxf->retrieveSmoothEdges(Nature::RIDGE, smoothEdges);
  //      for(vector<WXSmoothEdge*>::iterator se=smoothEdges.begin(), send=smoothEdges.end();
  //      se!=send;
  //      ++se){
  //        real ta = (*se)->ta();
  //        Vec3r A1((*se)->woea()->GetaVertex()->GetVertex());
  //        Vec3r A2((*se)->woea()->GetbVertex()->GetVertex());
  //        Vec3r A(A1+ta*(A2-A1));
  //        
  //        real tb = (*se)->tb();
  //        Vec3r B1((*se)->woeb()->GetaVertex()->GetVertex());
  //        Vec3r B2((*se)->woeb()->GetbVertex()->GetVertex());
//        Vec3r B(B1+tb*(B2-B1));
//        OrientedLineRep * line = new OrientedLineRep(A,B);
//        silhouetteDebugShape->AddRep(line);
//      }
//      Material redmat;
//      redmat.setDiffuse(1,0,0,1);
//      Material greenmat;
//      greenmat.setDiffuse(0,1,0,1);
//      real vecSize = _bboxDiag/70.0;
//      vector<WXFaceLayer*> flayers;
//      wxf->retrieveSmoothLayers(Nature::RIDGE, flayers);
//      for(vector<WXFaceLayer*>::iterator fl=flayers.begin(), flend=flayers.end();
//      fl!=flend;
//      ++fl){
        //        Vec3r c[3];
        //        unsigned nNegative = 0;
        //        unsigned index = 0;
        //        for(unsigned i=0; i<3; ++i){
        //          //real d = (*fl)->dotP(i);
        //          real d  = ((Face_Curvature_Info*)(*fl)->userdata)->vec_curvature_info[i]->K1/50.0;
        //          //cout << d << endl;
        //          if(d < 0){
        //            nNegative++;
        //            index = 1;
        //            d = -d;
        //          }
        //          else
        //            index = 0;
        //          c[i][index] = d;
        //        }
        //        TriangleRep * frep = new TriangleRep( wxf->GetVertex(0)->GetVertex(),
        //          c[0],
        //          wxf->GetVertex(1)->GetVertex(),
        //          c[1],
        //          wxf->GetVertex(2)->GetVertex(),
        //          c[2]);
        //        //if((nNegative != 0) && (nNegative != 3))
        //          silhouetteDebugShape->AddRep(frep);

        // 3D CURVATURES
        //==============
        //        Face_Curvature_Info * fci = (Face_Curvature_Info*)(*fl)->userdata;
        //        unsigned nvertices = wxf->numberOfVertices();
        //        for(i=0; i<nvertices; ++i){
        //          Curvature_info * ci = fci->vec_curvature_info[i];
        //          Vec3r v(wxf->GetVertex(i)->GetVertex());
        //          //          VertexRep *vrep = new VertexRep(v[0], v[1], v[2]);
        //          //          vrep->setMaterial(redmat);
        //          //          vrep->setPointSize(5.0);
        //          //          silhouetteDebugShape->AddRep(vrep);
        //          //          LineRep * maxc = new LineRep(v-vecSize*ci->e1/2.0, v+vecSize*ci->e1/2.0);
        //          //          LineRep * maxc = new LineRep(v, v+vecSize*ci->e1);
        //          //          maxc->setMaterial(redmat);
        //          //          maxc->setWidth(2.0);
        //          //          silhouetteDebugShape->AddRep(maxc);
        //          LineRep * minc = new LineRep(v, v+vecSize*ci->e2);
        //          minc->setMaterial(greenmat);
        //          minc->setWidth(2.0);
        //          silhouetteDebugShape->AddRep(minc);
        //        }
//      }
//    }
//  }
 
  //  
  //    // Sharp
  //    vector<WEdge*>& wedges = (*ws)->GetEdgeList();
  //    for(vector<WEdge*>::iterator we=wedges.begin(), weend=wedges.end();
  //    we!=weend;
  //    ++we){
  //      WXEdge * wxe = dynamic_cast<WXEdge*>(*we);
  //      if((wxe)->nature() != Nature::NO_FEATURE){
  //        OrientedLineRep * line = new OrientedLineRep( wxe->GetaVertex()->GetVertex(),
  //                                                      wxe->GetbVertex()->GetVertex());
  //        silhouetteDebugShape->AddRep(line);
  //      }
  //    }
  //  }
  //  WVertex *wvertex = _winged_edge->getWShapes()[0]->GetVertexList()[0];
  //  Vec3r v(wvertex->GetVertex());
  //  VertexRep * vrep = new VertexRep(v[0],v[1], v[2]);
  //  silhouetteDebugShape->AddRep(vrep );
  //  WVertex::face_iterator fit = wvertex->faces_begin();
  //  WVertex::face_iterator fitend = wvertex->faces_end();
  //  while(fit!=fitend){
  //    vector<WVertex*> fvertices;
  //    (*fit)->RetrieveVertexList(fvertices);
  //    Vec3r v[3];
  //    unsigned i=0;
  //    for(vector<WVertex*>::iterator fv=fvertices.begin(), fvend=fvertices.end();
  //    fv!=fvend;
  //    ++fv, ++i){
  //      v[i] = (*fv)->GetVertex();
  //    }
  //    TriangleRep * triangle = new TriangleRep(v[0], v[1], v[2]);
  //    silhouetteDebugShape->AddRep(triangle);
  //    ++fit;
  //  }
  //====================================================================
  // END GLDEBUG

  // Builds the view map structure from the flagged WSEdge structure:
  //----------------------------------------------------------
  ViewMapBuilder vmBuilder;
  vmBuilder.setProgressBar(_ProgressBar);
  vmBuilder.setEnableQI(_EnableQI);
  vmBuilder.setViewpoint(Vec3r(vp));
  
  vmBuilder.setTransform(mv, proj, viewport, focalLength, _pView->GetAspect(), _pView->GetFovyRadian());
  vmBuilder.setFrustum(_pView->znear(), _pView->zfar());
  
  vmBuilder.setGrid(&_Grid);
  
  // Builds a tesselated form of the silhouette for display purpose:
  //---------------------------------------------------------------
  ViewMapTesselator3D sTesselator3d;
  //ViewMapTesselator2D sTesselator2d;
  //sTesselator2d.setNature(_edgeTesselationNature);
  sTesselator3d.setNature(_edgeTesselationNature);
    
  _Chrono.start();
  // Build View Map
  _ViewMap = vmBuilder.BuildViewMap(*_winged_edge, _VisibilityAlgo, _EPSILON);
  _ViewMap->setScene3dBBox(_RootNode->bbox());
  
  //Tesselate the 3D edges:
  _SilhouetteNode = sTesselator3d.Tesselate(_ViewMap);
  _SilhouetteNode->addRef();
  
  // Tesselate 2D edges
  //  _ProjectedSilhouette = sTesselator2d.Tesselate(_ViewMap);
  //  _ProjectedSilhouette->addRef();
  
  duration = _Chrono.stop();
  printf("ViewMap building : %lf\n", duration);

  // FIXME DEBUG
  //    vector<ViewVertex*>& vvertices = _ViewMap->ViewVertices();
  //    for(vector<ViewVertex*>::iterator vv=vvertices.begin(), vvend=vvertices.end();
  //    vv!=vvend;
  //    ++vv){
  //      TVertex * tvertex = (*vv)->castToTVertex();
  //      if(!tvertex)
  //        continue;
  //      cout << "TVertex : " << tvertex->getId() << endl;
  //      if (!(tvertex->frontEdgeA().first))
  //        cout << "null FrontEdgeA" << endl;
  //      if (!(tvertex->frontEdgeB().first))
  //        cout << "null FrontEdgeB" << endl;
  //      if (!(tvertex->backEdgeA().first))
  //        cout << "null BackEdgeA" << endl;
  //      if (!(tvertex->backEdgeB().first))
  //        cout << "null backEdgeB" << endl;
  //    }
  //    cout << "-----------" << endl;
  //    vector<SVertex*>& svertices = _ViewMap->SVertices();
  //    unsigned i = 0;
  //    for(vector<SVertex*>::iterator sv = svertices.begin(), svend = svertices.end();
  //        sv != svend && i < 10;
  //        ++sv, ++i) {
  //      cout << "SVertex - Id : " << (*sv)->getId() << endl;
  //      cout << "SVertex - P3D : " << (*sv)->point3D() << endl;
  //      cout << "SVertex - P2D : " << (*sv)->point2D() << endl;
  //      set<Vec3r>::const_iterator i;
  //      unsigned tmp;
  //      for (i = (*sv)->normals().begin(), tmp = 0;
  // 	  i != (*sv)->normals().end();
  // 	  i++, tmp++);
  //      cout << "SVertex - Normals : " << tmp << endl;
  //      cout << "SVertex - FEdges : " << (*sv)->fedges().size() << endl;
  //    }
  //    cout << "-----------" << endl;
  //    vector<FEdge*>& fedges = _ViewMap->FEdges();
  //    for(vector<FEdge*>::iterator fe = fedges.begin(), feend = fedges.end();
  //        fe != feend && i < 10;
  //        ++fe, ++i) {
  //      cout << "FEdge - Id: " << (*fe)->getId() << endl;
  //      cout << "FEdge - Occl: " << (*fe)->getOccludeeIntersection() << endl;
  //    }
  //    cout << "-----------" << endl;
  // END DEBUG

  // FIXME GLDEBUG
  //====================================================================
  // CUSPS
  //=======
  //  vector<ViewEdge*>& vedges = _ViewMap->ViewEdges();
  //  //typedef ViewEdgeInternal::fedge_iterator_base<Nonconst_traits<FEdge*> > fedge_iterator;
  //  //fedge_iterator fit = vedges[0]->fedge_iterator_begin();
  //  for(vector<ViewEdge*>::iterator ve=vedges.begin(), veend=vedges.end();
  //  ve!=veend;
  //  ++ve){
  //    if((!((*ve)->getNature() & Nature::SILHOUETTE)) || (!((*ve)->fedgeA()->isSmooth())))
  //      continue;
  //    FEdge *fe = (*ve)->fedgeA();
  //    FEdge * fefirst = fe;
  //    //ViewEdge::fedge_iterator fit = (*ve)->fedge_iterator_begin();
  //    //ViewEdge::vertex_iterator vit = (*ve)->vertices_begin();
  //    
  //    Material mat;
  //    //    for(; !(fe.end()); ++fe){
  //    bool first = true;
  //    bool front = true;
  //    bool positive = true;
  //    do{
  //      FEdgeSmooth * fes = dynamic_cast<FEdgeSmooth*>(fe);
  //      Vec3r A((fes)->vertexA()->point3d());
  //      Vec3r B((fes)->vertexB()->point3d());
  //      Vec3r AB(B-A);
  //      AB.normalize();
  //      LineRep * lrep = new LineRep(A,B);
  //      silhouetteDebugShape->AddRep(lrep);
  //      Vec3r m((A+B)/2.0);
  //      Vec3r crossP(AB^(fes)->normal()); 
  //      crossP.normalize();
  //      Vec3r viewvector(m-vp);
  //      viewvector.normalize();
  //      if(first){
  //        if(((crossP)*(viewvector)) > 0)
  //          positive = true;
  //        else
  //          positive = false;
  //        first = false;
  //      }
  //      if(positive){
  //        if(((crossP)*(viewvector)) < -0.2)
  //          positive = false;
  //      }else{
  //        if(((crossP)*(viewvector)) > 0.2)
  //          positive = true;
  //      }
  //      if(positive)
  //        mat.setDiffuse(1,1,0,1);
  //      else
  //        mat.setDiffuse(1,0,0,1);
  //      lrep->setMaterial(mat);
  //      fe = fe->nextEdge();
  //    }while((fe!=0) && (fe!=fefirst));
  //  }
  //====================================================================
  // END FIXME GLDEBUG
  
  _pView->AddSilhouette(_SilhouetteNode);
  //_pView->AddSilhouette(_WRoot);
  //_pView->Add2DSilhouette(_ProjectedSilhouette);
  //_pView->Add2DVisibleSilhouette(_VisibleProjectedSilhouette);  
  _pView->AddDebug(_DebugNode);

  // Draw the steerable density map:
  //--------------------------------
  if(_ComputeSteerableViewMap){
    ComputeSteerableViewMap();
  }
  // Reset Style modules modification flags
  resetModified(true);
}

void Controller::ComputeSteerableViewMap(){
  if((!_Canvas) || (!_ViewMap))
    return;

  if(_ProgressBar){
    _ProgressBar->reset();
    _ProgressBar->setLabelText("Computing Steerable ViewMap");
    _ProgressBar->setTotalSteps(3);
    _ProgressBar->setProgress(0);
  }
    
  // Build 4 nodes containing the edges in the 4 directions
  NodeGroup *ng[Canvas::NB_STEERABLE_VIEWMAP];
  unsigned i;
  real c = 32.f/255.f; // see SteerableViewMap::readSteerableViewMapPixel() for information about this 32.
  for(i=0; i<Canvas::NB_STEERABLE_VIEWMAP; ++i){
    ng[i] = new NodeGroup;
  }
  NodeShape *completeNS = new NodeShape;
  completeNS->material().setDiffuse(c,c,c,1);
  ng[Canvas::NB_STEERABLE_VIEWMAP-1]->AddChild(completeNS);
  SteerableViewMap * svm = _Canvas->getSteerableViewMap();
  svm->Reset();

  _pMainWindow->DisplayMessage("Dividing up edges");
  ViewMap::fedges_container& fedges = _ViewMap->FEdges();
  LineRep * fRep;
  NodeShape *ns;
  for(ViewMap::fedges_container::iterator f=fedges.begin(), fend=fedges.end();
  f!=fend;
  ++f){
    if((*f)->viewedge()->qi() != 0)
      continue;
    fRep = new LineRep((*f)->vertexA()->point2d(),(*f)->vertexB()->point2d()) ;
    completeNS->AddRep(fRep); // add to the complete map anyway
    double *oweights = svm->AddFEdge(*f);
    for(i=0; i<Canvas::NB_STEERABLE_VIEWMAP-1; ++i){
      ns = new NodeShape;
      double wc = oweights[i]*c;
      if(oweights[i] == 0)
        continue;
      ns->material().setDiffuse(wc, wc, wc, 1);
      ns->AddRep(fRep);
      ng[i]->AddChild(ns);
    }
  }
  if(_ProgressBar)
    _ProgressBar->setProgress(1);
  _pMainWindow->DisplayMessage("Rendering Steerable ViewMap");
  GrayImage *img[Canvas::NB_STEERABLE_VIEWMAP];
  //#ifdef WIN32
  QGLBasicWidget offscreenBuffer(_pView, "SteerableViewMap", _pView->width(), _pView->height()); 
  QPixmap pm;
  QImage qimg;
  for(i=0; i<Canvas::NB_STEERABLE_VIEWMAP; ++i){
    offscreenBuffer.AddNode(ng[i]);
    //img[i] = new GrayImage(_pView->width(), _pView->height());
    //offscreenBuffer.readPixels(0,0,_pView->width(), _pView->height(), img[i]->getArray());
    pm = offscreenBuffer.renderPixmap(_pView->width(), _pView->height());

    if(pm.isNull())
      cout << "BuildViewMap Warning: couldn't render the steerable ViewMap" << endl;
    //pm.save(QString("steerable")+QString::number(i)+QString(".bmp"), "BMP");
    // FIXME!! Lost of time !
    qimg = pm.toImage();
    // FIXME !! again!
    img[i] = new GrayImage(_pView->width(), _pView->height());
    for(unsigned y=0;y<img[i]->height();++y){
      for(unsigned x=0;x<img[i]->width();++x){
        //img[i]->setPixel(x,y,(float)qGray(qimg.pixel(x,y))/255.f);
        img[i]->setPixel(x,y,(float)qGray(qimg.pixel(x,y)));
        //        float c = qGray(qimg.pixel(x,y));
        //        img[i]->setPixel(x,y,qGray(qimg.pixel(x,y)));
      }
    }
    offscreenBuffer.DetachNode(ng[i]);
    ng[i]->destroy();
    delete ng[i];
    // check
    //    qimg = QImage(_pView->width(), _pView->height(), 32);
    //    for(y=0;y<img[i]->height();++y){
    //      for(unsigned x=0;x<img[i]->width();++x){
    //        float v = img[i]->pixel(x,y);
    //        qimg.setPixel(x,y,qRgb(v,v,v));
    //      }
    //    }
    //    qimg.save(QString("newsteerable")+QString::number(i)+QString(".bmp"), "BMP");
  }
  //#else
// 	// LINUX
//   QGLBasicWidget offscreenBuffer(_pView, "SteerableViewMap", _pView->width(), _pView->height()); 

//   float * buffer = 0;
//   for(i=0; i<Canvas::NB_STEERABLE_VIEWMAP; ++i){
//     offscreenBuffer.AddNode(ng[i]);
// 	offscreenBuffer.draw();
//     img[i] = new GrayImage(_pView->width(), _pView->height());
//     buffer = img[i]->getArray();
//     offscreenBuffer.readPixels(0,0,_pView->width(), _pView->height(), buffer);
//     for(unsigned y=0;y<img[i]->height();++y){
//       for(unsigned x=0;x<img[i]->width();++x){
//         img[i]->setPixel(x,y,255.f *img[i]->pixel(x,y));
//       }
//     }

//     offscreenBuffer.DetachNode(ng[i]);
//     ng[i]->destroy();
//     delete ng[i];
//   }
// #endif
  if(_ProgressBar)
    _ProgressBar->setProgress(2);
  _pMainWindow->DisplayMessage("Building Gaussian Pyramids");
  svm->buildImagesPyramids(img,false,0,1.f);
  if(_ProgressBar)
    _ProgressBar->setProgress(3);
}

void Controller::saveSteerableViewMapImages(){
  SteerableViewMap * svm = _Canvas->getSteerableViewMap();
  if(!svm){
    cerr << "the Steerable ViewMap has not been computed yet" << endl;
    return;
  }
  svm->saveSteerableViewMap();
}

void Controller::toggleVisibilityAlgo() 
{
  if(_VisibilityAlgo == ViewMapBuilder::ray_casting) {
    _VisibilityAlgo = ViewMapBuilder::ray_casting_fast;
    _pMainWindow->DisplayMessage("Visibility algorithm switched to \"fast ray casting\"");
  }
  else if (_VisibilityAlgo == ViewMapBuilder::ray_casting_fast) {
    _VisibilityAlgo = ViewMapBuilder::ray_casting_very_fast;
    _pMainWindow->DisplayMessage("Visibility algorithm switched to \"very fast ray casting\"");
  }
  else {
    _VisibilityAlgo = ViewMapBuilder::ray_casting;
    _pMainWindow->DisplayMessage("Visibility algorithm switched to \"ray casting\"");
  }
}

void Controller::setQuantitativeInvisibility(bool iBool)
{
  _EnableQI = iBool;
}

bool Controller::getQuantitativeInvisibility() const
{
  return _EnableQI;
}

void Controller::setComputeRidgesAndValleysFlag(bool iBool){
  _ComputeRidges = iBool;
}

bool Controller::getComputeRidgesAndValleysFlag() const {
  return _ComputeRidges;
}
void Controller::setComputeSuggestiveContoursFlag(bool b){
  _ComputeSuggestive = b;
}
  
bool Controller::getComputeSuggestiveContoursFlag() const {
  return _ComputeSuggestive;
}
void Controller::setComputeSteerableViewMapFlag(bool iBool){
  _ComputeSteerableViewMap = iBool;
}

bool Controller::getComputeSteerableViewMapFlag() const {
  return _ComputeSteerableViewMap;
}
void Controller::setFrontBufferFlag(bool iBool)
{
  AppGLWidget::setFrontBufferFlag(iBool);
}

bool Controller::getFrontBufferFlag() const
{
  return AppGLWidget::getFrontBufferFlag();
}

void Controller::setBackBufferFlag(bool iBool)
{
  AppGLWidget::setBackBufferFlag(iBool);
}

bool Controller::getBackBufferFlag() const
{
  return AppGLWidget::getBackBufferFlag();
}

void Controller::DrawStrokes()
{
  if(_ViewMap == 0)
    return;

  _Chrono.start();
  _Canvas->Draw();
  real d = _Chrono.stop();
  cout << "Strokes drawing  : " << d << endl;
  resetModified();
}

void Controller::InsertStyleModule(unsigned index, const char *iFileName)
{
  QFileInfo fi(iFileName);
  QString ext = fi.suffix();
  if (ext != "py") {
    cerr << "Error: Cannot load \"" << fi.fileName().toAscii().data()
	 << "\", unknown extension" << endl;
    return;
  }
  StyleModule* sm = new StyleModule(iFileName, _inter);
  _Canvas->InsertStyleModule(index, sm);
  
}

void Controller::AddStyleModule(const char *iFileName)
{
  _pStyleWindow->Add(iFileName);
}

void Controller::RemoveStyleModule(unsigned index)
{
  _Canvas->RemoveStyleModule(index);
}

void Controller::Clear()
{
  _Canvas->Clear();
}

void Controller::ReloadStyleModule(unsigned index, const char * iFileName)
{
  StyleModule* sm = new StyleModule(iFileName, _inter);
  _Canvas->ReplaceStyleModule(index, sm);
}

void Controller::ExposeStyleWindow()
{
  _pStyleWindow->show();  
}

void Controller::ExposeOptionsWindow()
{
  _pOptionsWindow->show();
}

void Controller::ExposeHelpWindow()
{
	QStringList cmd_list = _browser_cmd.split(" ");
  for (QStringList::iterator it = cmd_list.begin();
       it != cmd_list.end();
       ++it)
    (*it).replace("%s", _help_index);
  QProcess browser(0);
  QString exe = cmd_list.first();
  cmd_list.removeFirst();
  browser.start(exe, cmd_list);
}

void Controller::ExposeAboutWindow()
{
  AppAboutWindow::display();
}

void Controller::SwapStyleModules(unsigned i1, unsigned i2)
{
  _Canvas->SwapStyleModules(i1, i2);
}


void Controller::toggleLayer(unsigned index, bool iDisplay)
{
  _Canvas->setVisible(index, iDisplay);
  _pView->updateGL();
}

void Controller::setModified(unsigned index, bool iMod)
{
  _pStyleWindow->setModified(index, iMod);
  _Canvas->setModified(index, iMod);
  updateCausalStyleModules(index + 1);
}

void Controller::updateCausalStyleModules(unsigned index) {
  vector<unsigned> vec;
  _Canvas->causalStyleModules(vec, index);
  for (vector<unsigned>::const_iterator it = vec.begin(); it != vec.end(); it++) {
    _pStyleWindow->setModified(*it, true);
    _Canvas->setModified(*it, true);
  }
}

void Controller::saveSnapshot(bool b) {
 _pView->saveSnapshot(b);
}

void Controller::savePSSnapshot(const QString& iFileName){
  PSStrokeRenderer psRenderer((const char*)iFileName.toAscii().data());
  _Canvas->Render(&psRenderer);
  psRenderer.Close();
}

void Controller::saveTextSnapshot(const QString& iFileName){
  TextStrokeRenderer textRenderer((const char*)iFileName.toAscii().data());
  _Canvas->Render(&textRenderer);
  textRenderer.Close();
}

void Controller::captureMovie() {
 _pView->captureMovie();
}

void Controller::resetModified(bool iMod)
{
  _pStyleWindow->resetModified(iMod);
  _Canvas->resetModified(iMod);
}

FEdge* Controller::SelectFEdge(real x, real y)
{
  if (!_ViewMap)
    return NULL;

  FEdge *fedge = (FEdge*)_ViewMap->GetClosestFEdge(x,y);
  ViewEdge *selection = fedge->viewedge();
  _pView->setSelectedFEdge(fedge);
  _Canvas->setSelectedFEdge(fedge);
  return fedge;
}

ViewEdge* Controller::SelectViewEdge(real x, real y)
{
  if (!_ViewMap)
    return NULL;

  FEdge *fedge = (FEdge*)_ViewMap->GetClosestFEdge(x,y);
  ViewEdge *selection = fedge->viewedge();
  _pView->setSelectedFEdge(fedge);
  _Canvas->setSelectedFEdge(fedge);
  return selection;
}

NodeGroup * Controller::BuildRep(vector<ViewEdge*>::iterator vedges_begin, 
                                       vector<ViewEdge*>::iterator vedges_end)
{
  ViewMapTesselator2D tesselator2D;
  Material mat;
  mat.setDiffuse(1,1,0.3,1);
  tesselator2D.setMaterial(mat);

  return (tesselator2D.Tesselate(vedges_begin, vedges_end));
}

void Controller::toggleEdgeTesselationNature(Nature::EdgeNature iNature)
{
  _edgeTesselationNature ^= (iNature);
  ComputeViewMap();
}

void		Controller::setModelsDir(const QString& dir) {
  _current_dirs->setValue("models/dir", dir);
}

QString		Controller::getModelsDir() const {
  QString dir = ".";
  _current_dirs->getValue("models/dir", dir);
  return dir;
}

void		Controller::setModulesDir(const QString& dir) {
  _current_dirs->setValue("modules/dir", dir);
}

QString		Controller::getModulesDir() const {
  QString dir = ".";
  _current_dirs->getValue("modules/dir", dir);
  return dir;
}

void		Controller::setPapersDir(const QString& dir) {
  _current_dirs->setValue("papers/dir", dir);
}

QString		Controller::getPapersDir() const {
  QString dir = Config::Path::getInstance()->getPapersDir();
  _current_dirs->getValue("papers/dir", dir);
  return dir;
}

void		Controller::setHelpIndex(const QString& index) {
  _help_index = index;
}

QString		Controller::getHelpIndex() const {
  return _help_index;
}

void		Controller::setBrowserCmd(const QString& cmd) {
  _browser_cmd = cmd;
}

QString		Controller::getBrowserCmd() const {
  return _browser_cmd;
}

void		Controller::resetInterpreter() {
  if (_inter)
    _inter->reset();
}

void Controller::displayMessage(const char * msg, bool persistent){
  _pMainWindow->DisplayMessage(msg, persistent);
}

void Controller::displayDensityCurves(int x, int y){
  SteerableViewMap * svm = _Canvas->getSteerableViewMap();
  if(!svm)
    return;

  unsigned i,j;
  typedef vector<Vec3r> densityCurve;
  vector<densityCurve> curves(svm->getNumberOfOrientations()+1);
  vector<densityCurve> curvesDirection(svm->getNumberOfPyramidLevels());

  // collect the curves values
  unsigned nbCurves = svm->getNumberOfOrientations()+1;
  unsigned nbPoints = svm->getNumberOfPyramidLevels();
  if(!nbPoints)
    return;

  // build the density/nbLevels curves for each orientation
  for(i=0;i<nbCurves; ++i){
    for(j=0; j<nbPoints; ++j){
      curves[i].push_back(Vec3r(j, svm->readSteerableViewMapPixel(i, j, x, y), 0));
    }
  }
  // build the density/nbOrientations curves for each level
  for(i=0;i<nbPoints; ++i){
    for(j=0; j<nbCurves; ++j){
      curvesDirection[i].push_back(Vec3r(j, svm->readSteerableViewMapPixel(j, i, x, y), 0));
    }
  }

  // display the curves
  for(i=0; i<nbCurves; ++i)
    _pDensityCurvesWindow->setOrientationCurve(i, Vec2d(0,0), Vec2d(nbPoints, 1), curves[i], "scale", "density");
  for(i=1; i<=8; ++i)
    _pDensityCurvesWindow->setLevelCurve(i, Vec2d(0,0), Vec2d(nbCurves, 1), curvesDirection[i], "orientation", "density");
  _pDensityCurvesWindow->show();
}