00001 /* @HEADER@ */ 00002 // ************************************************************************ 00003 // 00004 // Sundance 00005 // Copyright (2005) Sandia Corporation 00006 // 00007 // Copyright (year first published) Sandia Corporation. Under the terms 00008 // of Contract DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government 00009 // retains certain rights in this software. 00010 // 00011 // This library is free software; you can redistribute it and/or modify 00012 // it under the terms of the GNU Lesser General Public License as 00013 // published by the Free Software Foundation; either version 2.1 of the 00014 // License, or (at your option) any later version. 00015 // 00016 // This library is distributed in the hope that it will be useful, but 00017 // WITHOUT ANY WARRANTY; without even the implied warranty of 00018 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00019 // Lesser General Public License for more details. 00020 // 00021 // You should have received a copy of the GNU Lesser General Public 00022 // License along with this library; if not, write to the Free Software 00023 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 00024 // USA 00025 // Questions? Contact Kevin Long (krlong@sandia.gov), 00026 // Sandia National Laboratories, Livermore, California, USA 00027 // 00028 // ************************************************************************ 00029 /* @HEADER@ */ 00030 00031 #ifndef SUNDANCE_PARTITIONEDRECTANGLEMESHER_H 00032 #define SUNDANCE_PARTITIONEDRECTANGLEMESHER_H 00033 00034 #include "SundanceDefs.hpp" 00035 #include "SundanceMeshSourceBase.hpp" 00036 00037 namespace Sundance 00038 { 00039 using namespace Teuchos; 00040 00041 00042 00043 /** 00044 * PartitionedRectangleMesher meshes the rectangle 00045 * \f$ \left[a_x, b_x\right] \otimes \left[a_y, b_y\right] \f$ 00046 * with \f$ n_x \otimes n_y \f$ elements per processor. The 00047 * rectangle is partitioned among processors, with \f$np_x\f$ 00048 * equal sized 00049 * subdomains in the \f$x\f$ direction and \f$np_y\f$ in the \f$y\f$ 00050 * direction. 00051 */ 00052 class PartitionedRectangleMesher : public MeshSourceBase 00053 { 00054 public: 00055 /** 00056 * Set up meshing of the rectangle 00057 * \f$ \left[a_x, b_x\right] \otimes \left[a_y, b_y\right] \f$ 00058 * with \f$ n_x \otimes n_y \f$ elements per processor. The 00059 * rectangle is partitioned among processors, with \f$np_x\f$ 00060 * equal sized 00061 * subdomains in the \f$x\f$ direction and \f$np_y\f$ in the \f$y\f$ 00062 * direction. 00063 */ 00064 PartitionedRectangleMesher(double ax, double bx, int nx, int npx, 00065 double ay, double by, int ny, int npy, 00066 const MeshType& meshType, 00067 const MPIComm& comm = MPIComm::world()) 00068 : 00069 MeshSourceBase(meshType, comm), 00070 ax_(ax), bx_(bx), nx_(nx), npx_(npx), 00071 ay_(ay), by_(by), ny_(ny), npy_(npy) {;} 00072 00073 00074 /** Create a rectangle mesher from a ParameterList */ 00075 PartitionedRectangleMesher(const ParameterList& params); 00076 00077 /** */ 00078 virtual ~PartitionedRectangleMesher() {;} 00079 00080 /** Print a short descriptive std::string */ 00081 virtual std::string description() const 00082 {return "PartitionedRectangleMesher[ax=" + Teuchos::toString(ax_) 00083 + ", bx=" + Teuchos::toString(bx_) 00084 + ", nx=" + Teuchos::toString(nx_) + 00085 + ", ay=" + Teuchos::toString(ay_) 00086 + ", by=" + Teuchos::toString(by_) 00087 + ", ny=" + Teuchos::toString(ny_) + "]";} 00088 00089 00090 00091 /** Find a nearly equal balance between X and Y partitions */ 00092 static void balanceXY(int n, int* npx, int* npy); 00093 00094 00095 /** Return a ref count pointer to self */ 00096 virtual RCP<MeshSourceBase> getRcp() {return rcp(this);} 00097 00098 00099 00100 protected: 00101 00102 /** */ 00103 virtual Mesh fillMesh() const ; 00104 00105 private: 00106 00107 /** */ 00108 double ax_; 00109 /** */ 00110 double bx_; 00111 /** */ 00112 int nx_; 00113 /** */ 00114 int npx_; 00115 00116 /** */ 00117 double ay_; 00118 /** */ 00119 double by_; 00120 /** */ 00121 int ny_; 00122 /** */ 00123 int npy_; 00124 00125 00126 }; 00127 } 00128 00129 #endif