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00001 // Copyright (C) 2003 Johan Hoffman and Anders Logg. 00002 // Licensed under the GNU GPL Version 2. 00003 00004 #ifndef __GENERIC_FUNCTION_H 00005 #define __GENERIC_FUNCTION_H 00006 00007 #include <dolfin/NewArray.h> 00008 #include <dolfin/ElementFunction.h> 00009 00010 namespace dolfin { 00011 00012 class Cell; 00013 class Node; 00014 class Point; 00015 class Mesh; 00016 class ElementData; 00017 class FiniteElement; 00018 class NewPDE; 00019 00020 class GenericFunction { 00021 public: 00022 00023 GenericFunction(); 00024 virtual ~GenericFunction(); 00025 00026 // Evaluation of function 00027 virtual real operator() (const Node& n, real t) const; 00028 virtual real operator() (const Node& n, real t); 00029 virtual real operator() (const Point& p, real t) const; 00030 virtual real operator() (const Point& p, real t); 00031 virtual real operator() (real x, real y, real z, real t) const; 00032 virtual real operator() (real x, real y, real z, real t); 00033 virtual real operator() (unsigned int i, real t) const; 00034 virtual real operator() (unsigned int i, real t); 00035 00036 // Update function to given time 00037 virtual void update(real t); 00038 00039 // Return current time 00040 virtual real time() const; 00041 00042 // FIXME: Special member functions below: Should they be removed? 00043 //--------------------------------------------------------------- 00044 00045 // Return the mesh 00046 virtual Mesh& mesh() const; 00047 00048 // Get element data 00049 virtual ElementData& elmdata(); 00050 00051 // Update values of element function 00052 virtual void update(FunctionSpace::ElementFunction &v, 00053 const FiniteElement &element, 00054 const Cell &cell, real t) const; 00055 00056 // Update local function (restriction to given cell) 00057 virtual void update(NewArray<real>& w, const Cell& cell, const NewPDE& pde) const; 00058 00059 }; 00060 00061 } 00062 00063 #endif
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