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Poisson_Elem.hpp
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00042 
00043 #ifndef __Poisson_Elem_H
00044 #define __Poisson_Elem_H
00045 
00046 class Poisson_Elem {
00047 
00048   public:
00049     Poisson_Elem();
00050     ~Poisson_Elem();
00051 
00052 
00053     GlobalID getElemID() const {return globalElemID_;};
00054     void setElemID(GlobalID gNID) {globalElemID_ = gNID;
00055                                    ID_IsSet_ = true;};
00056 
00057     int numElemRows() const {return numElemRows_;};
00058     void numElemRows(int gNERows) {numElemRows_ = gNERows;};
00059 
00060     int numElemNodes() const {return numElemNodes_;};
00061     void numElemNodes(int gNodes) {numElemNodes_ = gNodes;};
00062 
00063     double getElemLength() const {return elemLength_;};
00064     void setElemLength(double len) {elemLength_ = len;
00065                                     elemLengthIsSet_ = true;};
00066 
00067     double getTotalLength() const {return totalLength_;};
00068     void setTotalLength(double len) {totalLength_ = len;
00069                                     totalLengthIsSet_ = true;};
00070 
00071     int allocateInternals(int DOF);
00072     int allocateLoad(int DOF);
00073     int allocateStiffness(int DOF);
00074 
00075     GlobalID* getElemConnPtr(int& size);
00076 
00077     void calculateLoad();
00078     double* getElemLoad(int& size);
00079 
00080     void calculateStiffness();
00081     double** getElemStiff(int& size);
00082 
00083     double* getNodalX(int& size) {size = numElemNodes_; return(nodalX_);};
00084     double* getNodalY(int& size) {size = numElemNodes_; return(nodalY_);};
00085 
00086     void calculateCoords();
00087 
00088     void messageAbort(const char* str);
00089 
00090     void deleteMemory();
00091 
00092 //$ temporary output for debugging...
00093 
00094     void dumpToScreen();
00095 
00096 
00097   private:
00098     GlobalID globalElemID_; // global ID number for this element
00099     bool ID_IsSet_;         // whether ID has been set or not.
00100     int numElemNodes_;      // number of nodes associated with this element
00101     int numElemRows_;       // number of rows in the element matrices
00102     
00103     GlobalID *nodeList_;      // list of nodes associated with this element
00104     double* nodalX_;          // list of nodal x-coordinates
00105     double* nodalY_;          // list of nodal y-coordinates
00106 
00107     double **elemStiff_;      // stiffness matrix for this element
00108     double *elemLoad_;        // load vector for this element
00109     bool internalsAllocated_;
00110 
00111     double elemLength_;       // length of a side of this 2D element
00112     double totalLength_;      // total length of a side of the square region
00113                               // that this element is in.
00114     bool elemLengthIsSet_;    // indicates whether length has been set.
00115     bool totalLengthIsSet_;    // indicates whether length has been set.
00116 
00117     bool loadAllocated_;
00118     bool stiffAllocated_;
00119 };
00120  
00121 #endif
00122 
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