data_out_rotation.h

// ---------------------------------------------------------------------
//
// Copyright (C) 2000 - 2018 by the deal.II authors
//
// This file is part of the deal.II library.
//
// The deal.II library is free software; you can use it, redistribute
// it, and/or modify it under the terms of the GNU Lesser General
// Public License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
// The full text of the license can be found in the file LICENSE at
// the top level of the deal.II distribution.
//
// ---------------------------------------------------------------------

#ifndef dealii_data_out_rotation_h
#define dealii_data_out_rotation_h


#include <deal.II/base/config.h>
#include <deal.II/numerics/data_out_dof_data.h>

#include <string>
#include <vector>

DEAL_II_NAMESPACE_OPEN


namespace internal
{
  namespace DataOutRotationImplementation
  {
    template <int dim, int spacedim>
    struct ParallelData : public internal::DataOutImplementation::ParallelDataBase<dim,spacedim>
    {
      ParallelData (const unsigned int n_datasets,
                    const unsigned int n_subdivisions,
                    const unsigned int n_patches_per_circle,
                    const std::vector<unsigned int> &n_postprocessor_outputs,
                    const Mapping<dim,spacedim> &mapping,
                    const std::vector<std::shared_ptr<::hp::FECollection<dim,spacedim> > > &finite_elements,
                    const UpdateFlags update_flags);

      const unsigned int n_patches_per_circle;

      std::vector<Point<spacedim> > patch_evaluation_points;
    };
  }
}



template <int dim, typename DoFHandlerType=DoFHandler<dim> >
class DataOutRotation : public DataOut_DoFData<DoFHandlerType,DoFHandlerType::dimension+1>
{
public:
  static const unsigned int dimension = DoFHandlerType::dimension;

  static const unsigned int space_dimension = DoFHandlerType::space_dimension;

  typedef typename DataOut_DoFData<DoFHandlerType,dimension+1>::cell_iterator cell_iterator;

  virtual void build_patches (const unsigned int n_patches_per_circle,
                              const unsigned int n_subdivisions = 0);

  virtual cell_iterator first_cell ();

  virtual cell_iterator next_cell (const cell_iterator &cell);

  DeclException1 (ExcRadialVariableHasNegativeValues,
                  double,
                  << "You are attempting to use this class on a triangulation "
                  "in which some vertices have a negative radial coordinate "
                  "value of "
                  << arg1
                  << ". If you rotate such a triangulation around an "
                  "axis, you will get (dim+1)-dimensional meshes "
                  "that are not likely what you hoped to see.");

private:
  void
  build_one_patch (const cell_iterator *cell,
                   internal::DataOutRotationImplementation::ParallelData<dimension, space_dimension> &data,
                   std::vector<DataOutBase::Patch<dimension+1,space_dimension+1> > &my_patches);
};


DEAL_II_NAMESPACE_CLOSE

#endif