vdpmsynthesizerviewerwidget.cc

penMesh is a generic and efficient data structure for representing and manipulating polygonal meshes

    (frustum_plane_[1].signed_distance(pos) < -radius) ||
    (frustum_plane_[2].signed_distance(pos) < -radius) ||
    (frustum_plane_[3].signed_distance(pos) < -radius);
#else
  
  Plane3d   frustum_plane[4];
  
  viewing_parameters_.frustum_planes(frustum_plane);

  for (int i = 0; i < 4; i++) {
    if (frustum_plane[i].singed_distance(pos) < -radius)
      return true;
  }  
  return false;
#endif
}

bool 
VDPMSynthesizerViewerWidget::
oriented_away(float sin_square, float distance_square, float product_value)
{
#if 0
  return (product_value > 0)
    &&   ((product_value * product_value) > (distance_square * sin_square));
#else
  if (product_value > 0 && 
      product_value * product_value > distance_square * sin_square)
    return true;
  else
    return false;
#endif
}


bool 
VDPMSynthesizerViewerWidget::
screen_space_error(float mue_square, float sigma_square, 
		   float distance_square, float product_value)
{
#if 0
  float ks_ds = kappa_square_ * distance_square;
  float pv_pv = product_value * product_value;
  return (mue_square >= ks_ds) 
    ||   (sigma_square*( distance_square - pv_pv) >= ks_ds*distance_square);
#else
  if ((mue_square >= kappa_square_ * distance_square) || 
      (sigma_square * (distance_square - product_value * product_value) >= kappa_square_ * distance_square * distance_square))
    return	false;
  else
    return	true;
#endif
}

void
VDPMSynthesizerViewerWidget::
open_vd_prog_mesh(const char* _filename)
{
  unsigned int                    i;
  unsigned int                    value;
  unsigned int                    fvi[3];
  char                            fileformat[16];
  Vec3f                           p, normal;
  float                           radius, sin_square, mue_square, sigma_square;
  VHierarchyNodeHandleContainer   roots;
  VertexHandle                    vertex_handle;  
  VHierarchyNodeIndex             node_index;
  VHierarchyNodeIndex             fund_lcut_index, fund_rcut_index;
  VHierarchyNodeHandle            node_handle;

  std::map<VHierarchyNodeIndex, VHierarchyNodeHandle> index2handle_map;

  std::ifstream ifs(_filename, std::ios::binary);

  if (!ifs)
  {
    std::cerr << "read error\n";
    exit(1);
  }

  //
  bool swap = Endian::local() != Endian::LSB;

  // read header  
  ifs.read(fileformat, 10); fileformat[10] = '\0';
  if (std::string(fileformat) != std::string("VDProgMesh"))
  {
    std::cerr << "Wrong file format.\n";
    ifs.close();
    exit(1);
  }

  IO::restore(ifs, n_base_vertices_, swap);
  IO::restore(ifs, n_base_faces_, swap);
  IO::restore(ifs, n_details_, swap);
  
  mesh_.clear();
  vfront_.clear();
  vhierarchy_.clear();

  vhierarchy_.set_num_roots(n_base_vertices_);

  // load base mesh
  for (i=0; i<n_base_vertices_; ++i)
  {
    IO::restore(ifs, p, swap);
    IO::restore(ifs, radius, swap);
    IO::restore(ifs, normal, swap);
    IO::restore(ifs, sin_square, swap);
    IO::restore(ifs, mue_square, swap);
    IO::restore(ifs, sigma_square, swap);

    vertex_handle = mesh_.add_vertex(p);
    node_index    = vhierarchy_.generate_node_index(i, 1);
    node_handle   = vhierarchy_.add_node();

    VHierarchyNode &node = vhierarchy_.node(node_handle);

    node.set_index(node_index);
    node.set_vertex_handle(vertex_handle);
    mesh_.vertex(vertex_handle).set_vhierarchy_node_handle(node_handle);
    
    node.set_radius(radius);
    node.set_normal(normal);
    node.set_sin_square(sin_square);
    node.set_mue_square(mue_square);
    node.set_sigma_square(sigma_square);
    mesh_.set_normal(vertex_handle, normal);

    index2handle_map[node_index] = node_handle;
    roots.push_back(node_handle);
  }
  vfront_.init(roots, n_details_);

  for (i=0; i<n_base_faces_; ++i)
  {
    IO::restore(ifs, fvi[0], swap);
    IO::restore(ifs, fvi[1], swap);
    IO::restore(ifs, fvi[2], swap);

    mesh_.add_face(mesh_.vertex_handle(fvi[0]), 
		   mesh_.vertex_handle(fvi[1]), 
		   mesh_.vertex_handle(fvi[2]));
  }

  // load details
  for (i=0; i<n_details_; ++i)
  {
    // position of v0
    IO::restore(ifs, p, swap);
    
    // vsplit info.
    IO::restore(ifs, value, swap);
    node_index = VHierarchyNodeIndex(value);

    IO::restore(ifs, value, swap);
    fund_lcut_index = VHierarchyNodeIndex(value);

    IO::restore(ifs, value, swap);
    fund_rcut_index = VHierarchyNodeIndex(value);


    node_handle = index2handle_map[node_index];
    vhierarchy_.make_children(node_handle);

    VHierarchyNode &node   = vhierarchy_.node(node_handle);
    VHierarchyNode &lchild = vhierarchy_.node(node.lchild_handle());
    VHierarchyNode &rchild = vhierarchy_.node(node.rchild_handle());

    node.set_fund_lcut(fund_lcut_index);
    node.set_fund_rcut(fund_rcut_index);
    
    vertex_handle = mesh_.add_vertex(p);
    lchild.set_vertex_handle(vertex_handle);
    rchild.set_vertex_handle(node.vertex_handle());    

    index2handle_map[lchild.node_index()] = node.lchild_handle();
    index2handle_map[rchild.node_index()] = node.rchild_handle();

    // view-dependent parameters
    IO::restore(ifs, radius, swap);
    IO::restore(ifs, normal, swap);
    IO::restore(ifs, sin_square, swap);
    IO::restore(ifs, mue_square, swap);
    IO::restore(ifs, sigma_square, swap);
    lchild.set_radius(radius);
    lchild.set_normal(normal);
    lchild.set_sin_square(sin_square);
    lchild.set_mue_square(mue_square);
    lchild.set_sigma_square(sigma_square);

    IO::restore(ifs, radius, swap);
    IO::restore(ifs, normal, swap);
    IO::restore(ifs, sin_square, swap);
    IO::restore(ifs, mue_square, swap);
    IO::restore(ifs, sigma_square, swap);
    rchild.set_radius(radius);
    rchild.set_normal(normal);
    rchild.set_sin_square(sin_square);
    rchild.set_mue_square(mue_square);
    rchild.set_sigma_square(sigma_square);
  }

  ifs.close();

  // update face and vertex normals
  mesh_.update_face_normals();

  // bounding box
  VDPMMesh::ConstVertexIter  
     vIt(mesh_.vertices_begin()), 
     vEnd(mesh_.vertices_end());

   VDPMMesh::Point bbMin, bbMax;

   bbMin = bbMax = mesh_.point(vIt);
   for (; vIt!=vEnd; ++vIt)
   {
      bbMin.minimize(mesh_.point(vIt));
      bbMax.maximize(mesh_.point(vIt));
   }
  
  // set center and radius
  set_scene_pos(0.5f*(bbMin + bbMax), 0.5*(bbMin - bbMax).norm());
    
  // info
  std::cerr << mesh_.n_vertices() << " vertices, "
    << mesh_.n_edges()    << " edge, "
    << mesh_.n_faces()    << " faces, "
    << n_details_ << " detail vertices\n";

  updateGL();
}




void VDPMSynthesizerViewerWidget::keyPressEvent(QKeyEvent* _event)
{
  switch (_event->key())
  {
    case Key_Home:
      updateGL();
      break;
    
    case Key_End:
      updateGL();
      break;
      
    case Key_Plus:
      viewing_parameters_.increase_tolerance();
      std::cout << "Scree-space error tolerance^2 is increased by " 
		<< viewing_parameters_.tolerance_square() << std::endl;
      updateGL();
      break;
      
    case Key_Minus:
      viewing_parameters_.decrease_tolerance();
      std::cout << "Screen-space error tolerance^2 is decreased by " 
		<< viewing_parameters_.tolerance_square() << std::endl;
      updateGL();
      break;
      
    case Key_A:
      adaptive_mode_ = !(adaptive_mode_);
      std::cout << "Adaptive refinement mode is " 
		<< (adaptive_mode_ ? "on" : "off") << std::endl;
      updateGL();
      break;

    case Key_O:
      qFilename_ = QFileDialog::getOpenFileName("", "*.spm");
      open_vd_prog_mesh(qFilename_);
      break;
      
    default:
      MeshViewerWidget::keyPressEvent( _event );
  }
  
}





void
VDPMSynthesizerViewerWidget::
update_viewing_parameters()
{
  viewing_parameters_.set_modelview_matrix(modelview_matrix());
  viewing_parameters_.set_aspect((float) width()/ (float) height());
  viewing_parameters_.set_fovy(fovy());
  
  viewing_parameters_.update_viewing_configurations();
}


//=============================================================================
} // namespace OpenMesh
//=============================================================================