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00001 // Copyright (C) 2003 Johan Hoffman and Anders Logg. 00002 // Licensed under the GNU GPL Version 2. 00003 00004 #ifndef __FUNCTION_LIST_H 00005 #define __FUNCTION_LIST_H 00006 00007 #include <dolfin/FunctionPointer.h> 00008 #include <dolfin/Array.h> 00009 #include <dolfin/ShapeFunction.h> 00010 #include <dolfin/ElementFunction.h> 00011 00012 namespace dolfin { 00013 00014 class Map; 00015 00016 class FunctionList { 00017 public: 00018 00019 FunctionList(); 00020 00021 // Addition of functions 00022 static int add(function f); 00023 00024 // Specification of derivatives wrt reference coordinates 00025 static void set(int id, 00026 FunctionSpace::ElementFunction ddX, 00027 FunctionSpace::ElementFunction ddY, 00028 FunctionSpace::ElementFunction ddZ, 00029 FunctionSpace::ElementFunction ddT); 00030 00031 // Update derivatives with current map 00032 static void update(const FunctionSpace::ShapeFunction& v, const Map& map); 00033 00034 // Size of list 00035 static unsigned int size(); 00036 00037 // Evaluation 00038 static real eval(int id, real x, real y, real z, real t); 00039 00040 // Derivatives wrt real coordinates 00041 static const FunctionSpace::ElementFunction& ddx(int id); 00042 static const FunctionSpace::ElementFunction& ddy(int id); 00043 static const FunctionSpace::ElementFunction& ddz(int id); 00044 static const FunctionSpace::ElementFunction& ddt(int id); 00045 00046 // Derivatives wrt reference coordinates 00047 static const FunctionSpace::ElementFunction& ddX(int id); 00048 static const FunctionSpace::ElementFunction& ddY(int id); 00049 static const FunctionSpace::ElementFunction& ddZ(int id); 00050 static const FunctionSpace::ElementFunction& ddT(int id); 00051 00052 private: 00053 00054 class FunctionData { 00055 public: 00056 00057 FunctionData(); 00058 FunctionData(function f); 00059 00060 // 00061 void operator= (int zero); 00062 bool operator! () const; 00063 00064 function f; // Function pointer 00065 00066 FunctionSpace::ElementFunction ddx; // Derivative wrt dx 00067 FunctionSpace::ElementFunction ddy; // Derivative wrt dy 00068 FunctionSpace::ElementFunction ddz; // Derivative wrt dz 00069 FunctionSpace::ElementFunction ddt; // Derivative wrt dt 00070 00071 FunctionSpace::ElementFunction ddX; // Derivative wrt dX 00072 FunctionSpace::ElementFunction ddY; // Derivative wrt dY 00073 FunctionSpace::ElementFunction ddZ; // Derivative wrt dZ 00074 FunctionSpace::ElementFunction ddT; // Derivative wrt dT 00075 }; 00076 00077 static void init(); 00078 00079 static Array<FunctionData> list; 00080 static int _size; 00081 static bool initialised; 00082 00083 }; 00084 00085 } 00086 00087 #endif
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