message: Change cast type
diff: @@ -156,22 +156,22 @@ namespace RINGMesh {
  const Corner& GeoModel::corner( index_t index ) const
  {
  ringmesh_assert( index < corners_.size() ) ;
  - return *dynamic_cast< const Corner* >( corners_[index] ) ;
  + return *static_cast< const Corner* >( corners_[index] ) ;
  }
  const Line& GeoModel::line( index_t index ) const
  {
  ringmesh_assert( index < lines_.size() ) ;
  - return *dynamic_cast< const Line* >( lines_[index] ) ;
  + return *static_cast< const Line* >( lines_[index] ) ;
  }
  const Surface& GeoModel::surface( index_t index ) const
  {
  ringmesh_assert( index < surfaces_.size() ) ;
  - return *dynamic_cast< const Surface* >( surfaces_[index] ) ;
  + return *static_cast< const Surface* >( surfaces_[index] ) ;
  }
  const Region& GeoModel::region( index_t index ) const
  {
  ringmesh_assert( index < regions_.size() ) ;
  - return *dynamic_cast< const Region* >( regions_[index] ) ;
  + return *static_cast< const Region* >( regions_[index] ) ;
  }
  /*!
  