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00001 // Copyright (C) 2002 Johan Hoffman and Anders Logg. 00002 // Licensed under the GNU GPL Version 2. 00003 00004 #ifndef __NODE_HH 00005 #define __NODE_HH 00006 00007 #include <dolfin/dolfin_log.h> 00008 #include <dolfin/constants.h> 00009 #include <dolfin/Array.h> 00010 #include <dolfin/Point.h> 00011 #include <dolfin/NodeIterator.h> 00012 #include <dolfin/CellIterator.h> 00013 #include <dolfin/EdgeIterator.h> 00014 00015 namespace dolfin{ 00016 00017 class GenericCell; 00018 class Cell; 00019 class Edge; 00020 class MeshInit; 00021 00022 class Node{ 00023 public: 00024 00026 Node(); 00027 00029 Node(real x); 00030 00032 Node(real x, real y); 00033 00035 Node(real x, real y, real z); 00036 00038 ~Node(); 00039 00041 void clear(); 00042 00044 00046 int id() const; 00047 00049 int noNodeNeighbors() const; 00050 00052 int noCellNeighbors() const; 00053 00055 int noEdgeNeighbors() const; 00056 00058 Node& node(int i) const; 00059 00061 Cell& cell(int i) const; 00062 00064 Edge& edge(int i) const; 00065 00067 Node* parent() const; 00068 00070 Node* child() const; 00071 00073 Point& coord(); 00074 00076 Point coord() const; 00077 00079 Point midpoint(const Node& n) const; 00080 00082 real dist(const Node& n) const; 00083 00085 real dist(const Point& p) const; 00086 00088 real dist(real x, real y = 0.0, real z = 0.0) const; 00089 00091 bool neighbor(const Node& n) const; 00092 00094 bool operator==(const Node& node) const; 00095 00097 bool operator!=(const Node& node) const; 00098 00100 00101 bool operator== (int id) const; 00102 bool operator< (int id) const; 00103 bool operator<= (int id) const; 00104 bool operator> (int id) const; 00105 bool operator>= (int id) const; 00106 00107 friend bool operator== (int id, const Node& node); 00108 friend bool operator< (int id, const Node& node); 00109 friend bool operator<= (int id, const Node& node); 00110 friend bool operator> (int id, const Node& node); 00111 friend bool operator>= (int id, const Node& node); 00112 00114 00116 friend LogStream& operator<<(LogStream& stream, const Node& node); 00117 00119 friend class Mesh; 00120 friend class MeshRefinement; 00121 friend class TriMeshRefinement; 00122 friend class TetMeshRefinement; 00123 friend class Triangle; 00124 friend class Tetrahedron; 00125 friend class MeshData; 00126 friend class MeshInit; 00127 friend class NodeIterator::NodeNodeIterator; 00128 friend class CellIterator::NodeCellIterator; 00129 friend class EdgeIterator::NodeEdgeIterator; 00130 00131 private: 00132 00133 // Specify global node number 00134 int setID(int id, Mesh& mesh); 00135 00136 // Set the mesh pointer 00137 void setMesh(Mesh& mesh); 00138 00139 // Set parent node 00140 void setParent(Node& parent); 00141 00142 // Set child node 00143 void setChild(Node& child); 00144 00145 // Remove parent node 00146 void removeParent(Node& parent); 00147 00148 // Remove child node 00149 void removeChild(); 00150 00151 // Specify coordinate 00152 void set(real x, real y, real z); 00153 00154 //--- Node data --- 00155 00156 // The mesh containing this node 00157 Mesh* mesh; 00158 00159 // Global node number 00160 int _id; 00161 00162 // Node coordinate 00163 Point p; 00164 00165 // Connectivity 00166 Array<Node*> nn; 00167 Array<Cell*> nc; 00168 Array<Edge*> ne; 00169 00170 // Parent-child info 00171 Node* _parent; 00172 Node* _child; 00173 00174 }; 00175 00176 } 00177 00178 #endif
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