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00001 #ifndef NULLCELLSET_H 00002 #define NULLCELLSET_H 00003 00004 #include "SundanceDefs.h" 00005 #include "CellSetBase.h" 00006 00007 00008 namespace Sundance 00009 { 00010 00011 using namespace TSF; 00012 using std::string; 00013 00014 using std::ostream; 00015 00016 /** \ingroup LowLevelGeometry 00017 * Base class for cell sets. CellSetBase objects are always used wrapped 00018 * in a CellSet handle class. 00019 */ 00020 00021 class NullCellSet : public CellSetBase 00022 { 00023 public: 00024 /** empty ctor */ 00025 NullCellSet(); 00026 /** TUVD */ 00027 virtual ~NullCellSet(){;} 00028 00029 /** determine if a given cell is contained in this set */ 00030 virtual bool contains(const Cell& /* cell */) const {return false;} 00031 00032 /** write as XML */ 00033 virtual XMLObject toXML() const ; 00034 00035 /** find the cell dimensions that should be searched to find cells 00036 * in this set */ 00037 virtual int dimension(const Mesh& mesh) const ; 00038 00039 /** test equality */ 00040 virtual bool equals(const CellSet& /* other */) const {return true;} 00041 00042 /** test ordering */ 00043 virtual bool lessThan(const CellSet& /* other */) const {return false;} 00044 protected: 00045 }; 00046 00047 00048 00049 } 00050 #endif