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00001 #ifndef AFFINEREFERENCECELL_H 00002 #define AFFINEREFERENCECELL_H 00003 00004 #include "SundanceDefs.h" 00005 00006 #include "ReferenceCellBase.h" 00007 00008 namespace Sundance 00009 { 00010 00011 using namespace TSF; 00012 using std::string; 00013 00014 using std::ostream; 00015 00016 /** \ingroup LowLevelGeometry 00017 AffineReferenceCell is a reference object for cells whose mapping from 00018 reference to physical coordinates is an affine transformation. For 00019 such cells, the Jacobian is a constant and we can do simpler calculations. 00020 */ 00021 00022 00023 class AffineReferenceCell : public ReferenceCellBase 00024 { 00025 public: 00026 /** \name Developer-only methods */ 00027 //@{ 00028 /** Empty ctor */ 00029 AffineReferenceCell() : ReferenceCellBase() {;} 00030 /** dtor */ 00031 virtual ~AffineReferenceCell() {;} 00032 00033 /** identify self as affine */ 00034 virtual bool isAffine() const {return true;} 00035 00036 /** get jacobian at a set of points */ 00037 virtual void jacobian(const Cell& cell, 00038 const TSFArray<Point>& refpts, 00039 TSFArray<CellJacobian>& J) const ; 00040 00041 /** get jacobian determinant at a set of points */ 00042 virtual void detJacobian(const Cell& cell, 00043 const TSFArray<Point>& refpts, 00044 TSFArray<double>& detJ) const ; 00045 00046 /** pullback maps physical coords to reference coords. */ 00047 virtual void pullBack(const Cell& cell, 00048 const TSFArray<Point>& phys, 00049 TSFArray<Point>& ref) const ; 00050 //@} 00051 private: 00052 }; 00053 00054 } 00055 #endif