Line data    Source code

       1              : /*
       2              :  * Copyright (c) 2016:  G-CSC, Goethe University Frankfurt
       3              :  * Author: Sebastian Reiter
       4              :  * 
       5              :  * This file is part of UG4.
       6              :  * 
       7              :  * UG4 is free software: you can redistribute it and/or modify it under the
       8              :  * terms of the GNU Lesser General Public License version 3 (as published by the
       9              :  * Free Software Foundation) with the following additional attribution
      10              :  * requirements (according to LGPL/GPL v3 §7):
      11              :  * 
      12              :  * (1) The following notice must be displayed in the Appropriate Legal Notices
      13              :  * of covered and combined works: "Based on UG4 (www.ug4.org/license)".
      14              :  * 
      15              :  * (2) The following notice must be displayed at a prominent place in the
      16              :  * terminal output of covered works: "Based on UG4 (www.ug4.org/license)".
      17              :  * 
      18              :  * (3) The following bibliography is recommended for citation and must be
      19              :  * preserved in all covered files:
      20              :  * "Reiter, S., Vogel, A., Heppner, I., Rupp, M., and Wittum, G. A massively
      21              :  *   parallel geometric multigrid solver on hierarchically distributed grids.
      22              :  *   Computing and visualization in science 16, 4 (2013), 151-164"
      23              :  * "Vogel, A., Reiter, S., Rupp, M., Nägel, A., and Wittum, G. UG4 -- a novel
      24              :  *   flexible software system for simulating pde based models on high performance
      25              :  *   computers. Computing and visualization in science 16, 4 (2013), 165-179"
      26              :  * 
      27              :  * This program is distributed in the hope that it will be useful,
      28              :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      29              :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
      30              :  * GNU Lesser General Public License for more details.
      31              :  */
      32              : 
      33              : #ifndef __H__UG_plane_cut_projector
      34              : #define __H__UG_plane_cut_projector
      35              : 
      36              : #include "refinement_projector.h"
      37              : 
      38              : namespace ug{
      39              : 
      40              : ///     calculates new positions by cutting parent edges with a plane
      41              : /**     For each edge the intersection of the edge with the initially
      42              :  *      given plane is calculated and used as new point. Vertices
      43              :  *      created on other geometric objects are treated as in the linear case.
      44              :  */
      45              : class PlaneCutProjector : public RefinementProjector {
      46              : public:
      47            0 :         PlaneCutProjector () :
      48              :                 m_p (0, 0, 0),
      49            0 :                 m_n (0, 0, 1)
      50              :         {}
      51              :         
      52              :         PlaneCutProjector (const vector3& position,
      53            0 :                                                 const vector3& normal) :
      54              :                 m_p (position),
      55            0 :                 m_n (normal)
      56              :         {}
      57              : 
      58              : /**     \sa ug::RefinementProjector::RefinementProjector*/
      59            0 :         PlaneCutProjector (SPIGeometry3d geometry,
      60              :                                            const vector3& position,
      61            0 :                                            const vector3& normal) :
      62              :                 RefinementProjector (geometry),
      63              :                 m_p (position),
      64            0 :                 m_n (normal)
      65            0 :         {}
      66              : 
      67            0 :         virtual ~PlaneCutProjector ()                   {}
      68              : 
      69            0 :         void set_position (const vector3& position)         {m_p = position;}
      70            0 :         const vector3& position () const                            {return m_p;}
      71              : 
      72            0 :         void set_normal (const vector3& normal)                     {m_n = normal;}
      73            0 :         const vector3& normal () const                                      {return m_n;}
      74              : 
      75              : ///     called when a new vertex was created from an old edge.
      76            0 :         virtual number new_vertex(Vertex* vrt, Edge* parent)
      77              :         {
      78              :                 number t;
      79              :                 vector3 v;
      80              :                 vector3 dir;
      81            0 :                 VecSubtract(dir, pos(parent->vertex(1)), pos(parent->vertex(0)));
      82              :                 
      83            0 :                 if(RayPlaneIntersection(v, t, pos(parent->vertex(0)), dir, m_p, m_n)) {
      84              :                         set_pos(vrt, v);
      85              :                 }
      86              :                 else{
      87              :                         RefinementProjector::new_vertex(vrt, parent);
      88              :                 }
      89            0 :                 return 1;
      90              :         }
      91              : 
      92              : private:
      93              :         friend class boost::serialization::access;
      94              : 
      95              :         template <class Archive>
      96              :         void serialize( Archive& ar, const unsigned int version)
      97              :         {
      98              :                 ar & make_nvp("position", m_p);
      99              :                 ar & make_nvp("normal", m_n);
     100              :                 UG_EMPTY_BASE_CLASS_SERIALIZATION(PlaneCutProjector, RefinementProjector);
     101              :         }
     102              : 
     103              :         vector3 m_p;
     104              :         vector3 m_n;
     105              : };
     106              : 
     107              : }//     end of namespace
     108              : 
     109              : #endif  //__H__UG_plane_cut_projector