1 | // -*- c++ -*- |
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2 | #ifndef HUGO_NET_GRAPH_H |
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3 | #define HUGO_NET_GRAPH_H |
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4 | |
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5 | ///\file |
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6 | ///\brief Declaration of HierarchyGraph. |
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7 | |
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8 | #include <hugo/invalid.h> |
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9 | #include <hugo/maps.h> |
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10 | |
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11 | /// The namespace of HugoLib |
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12 | namespace hugo { |
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13 | |
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14 | // @defgroup empty_graph The HierarchyGraph class |
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15 | // @{ |
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16 | |
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17 | /// A graph class in that a simple edge can represent a path. |
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18 | |
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19 | /// This class provides common features of a graph structure |
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20 | /// that represents a network. You can handle with it layers. This |
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21 | /// means that a node in one layer can be a complete network in a nother |
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22 | /// layer. |
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23 | |
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24 | template <class Gact, class Gsub> |
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25 | class HierarchyGraph |
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26 | { |
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27 | |
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28 | public: |
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29 | |
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30 | /// The actual layer |
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31 | Gact actuallayer; |
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32 | |
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33 | |
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34 | /// Map of the subnetworks in the sublayer |
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35 | /// The appropriate edge nodes are also stored here |
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36 | |
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37 | class SubNetwork |
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38 | { |
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39 | |
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40 | struct actedgesubnodestruct |
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41 | { |
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42 | typename Gact::Edge actedge; |
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43 | typename Gsub::Node subnode; |
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44 | }; |
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45 | |
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46 | int edgenumber; |
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47 | bool connectable; |
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48 | Gact * actuallayer; |
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49 | typename Gact::Node * actuallayernode; |
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50 | Gsub * subnetwork; |
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51 | actedgesubnodestruct * assignments; |
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52 | |
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53 | public: |
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54 | |
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55 | int addAssignment(typename Gact::Edge actedge, typename Gsub::Node subnode) |
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56 | { |
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57 | if(!(actuallayer->valid(actedge))) |
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58 | { |
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59 | cerr << "The given edge is not in the given network!" << endl; |
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60 | return -1; |
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61 | } |
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62 | else if( |
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63 | (actuallayer->id(actuallayer->tail(actedge))!=actuallayer->id(*actuallayernode)) |
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64 | && |
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65 | (actuallayer->id(actuallayer->head(actedge))!=actuallayer->id(*actuallayernode)) |
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66 | ) |
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67 | { |
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68 | cerr << "The given edge does not connect to the given node!" << endl; |
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69 | return -1; |
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70 | } |
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71 | |
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72 | if(!(subnetwork->valid(subnode))) |
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73 | { |
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74 | cerr << "The given node is not in the given network!" << endl; |
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75 | return -1; |
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76 | } |
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77 | |
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78 | int i=0; |
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79 | //while in the array there is valid note that is not equvivalent with the one that would be noted increase i |
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80 | while( (i<edgenumber) && (actuallayer->valid(assignments[i].actedge) ) && (assignments[i].actedge!=actedge) ) i++; |
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81 | if(assignments[i].actedge==actedge) |
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82 | { |
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83 | cout << "Warning: Redefinement of assigment!!!" << endl; |
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84 | } |
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85 | if(i==edgenumber) |
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86 | { |
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87 | cout << "This case can't be!!! (because there should be the guven edge in the array already and the cycle had to stop)" << endl; |
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88 | } |
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89 | //if(!(actuallayer->valid(assignments[i].actedge))) //this condition is necessary if we do not obey redefinition |
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90 | { |
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91 | assignments[i].actedge=actedge; |
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92 | assignments[i].subnode=subnode; |
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93 | } |
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94 | |
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95 | /// If to all of the edges a subnode is assigned then the subnetwork is connectable (attachable?) |
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96 | /// We do not need to check for further attributes, because to notice an assignment we need |
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97 | /// all of them to be correctly initialised before. |
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98 | if(i==edgenumber-1)connectable=1; |
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99 | |
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100 | return 0; |
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101 | } |
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102 | |
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103 | int setSubNetwork(Gsub * sn) |
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104 | { |
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105 | subnetwork=sn; |
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106 | return 0; |
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107 | } |
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108 | |
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109 | int setActualLayer(Gact * al) |
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110 | { |
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111 | actuallayer=al; |
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112 | return 0; |
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113 | } |
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114 | |
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115 | int setActualLayerNode(typename Gact::Node * aln) |
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116 | { |
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117 | typename Gact::InEdgeIt iei; |
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118 | typename Gact::OutEdgeIt oei; |
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119 | |
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120 | actuallayernode=aln; |
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121 | |
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122 | edgenumber=0; |
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123 | |
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124 | if(actuallayer) |
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125 | { |
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126 | for(iei=actuallayer->first(iei,(*actuallayernode));((actuallayer->valid(iei))&&(actuallayer->head(iei)==(*actuallayernode)));actuallayer->next(iei)) |
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127 | { |
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128 | cout << actuallayer->id(actuallayer->tail(iei)) << " " << actuallayer->id(actuallayer->head(iei)) << endl; |
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129 | edgenumber++; |
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130 | } |
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131 | //cout << "Number of in-edges: " << edgenumber << endl; |
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132 | for(oei=actuallayer->first(oei,(*actuallayernode));((actuallayer->valid(oei))&&(actuallayer->tail(oei)==(*actuallayernode)));actuallayer->next(oei)) |
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133 | { |
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134 | cout << actuallayer->id(actuallayer->tail(oei)) << " " << actuallayer->id(actuallayer->head(oei)) << endl; |
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135 | edgenumber++; |
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136 | } |
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137 | //cout << "Number of in+out-edges: " << edgenumber << endl; |
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138 | assignments=new actedgesubnodestruct[edgenumber]; |
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139 | for(int i=0;i<edgenumber;i++) |
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140 | { |
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141 | assignments[i].actedge=INVALID; |
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142 | assignments[i].subnode=INVALID; |
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143 | } |
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144 | } |
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145 | else |
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146 | { |
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147 | cerr << "There is no actual layer defined yet!" << endl; |
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148 | return -1; |
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149 | } |
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150 | |
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151 | return 0; |
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152 | } |
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153 | |
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154 | SubNetwork(): edgenumber(0), connectable(false), actuallayer(NULL), actuallayernode(NULL), subnetwork(NULL), assignments(NULL) |
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155 | { |
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156 | } |
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157 | |
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158 | }; |
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159 | |
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160 | typename Gact::template NodeMap< SubNetwork > subnetworks; |
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161 | |
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162 | |
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163 | /// Defalult constructor. |
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164 | /// We don't need any extra lines, because the actuallayer |
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165 | /// variable has run its constructor, when we have created this class |
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166 | /// So only the two maps has to be initialised here. |
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167 | HierarchyGraph() : subnetworks(actuallayer) |
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168 | { |
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169 | } |
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170 | |
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171 | |
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172 | ///Copy consructor. |
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173 | HierarchyGraph(const HierarchyGraph<Gact, Gsub> & HG ) : actuallayer(HG.actuallayer), subnetworks(actuallayer) |
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174 | { |
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175 | } |
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176 | |
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177 | |
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178 | /// The base type of the node iterators. |
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179 | |
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180 | /// This is the base type of each node iterators, |
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181 | /// thus each kind of node iterator will convert to this. |
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182 | /// The Node type of the HierarchyGraph is the Node type of the actual layer. |
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183 | typedef typename Gact::Node Node; |
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184 | |
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185 | |
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186 | /// This iterator goes through each node. |
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187 | |
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188 | /// Its usage is quite simple, for example you can count the number |
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189 | /// of nodes in graph \c G of type \c Graph like this: |
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190 | /// \code |
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191 | ///int count=0; |
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192 | ///for(Graph::NodeIt n(G);G.valid(n);G.next(n)) count++; |
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193 | /// \endcode |
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194 | /// The NodeIt type of the HierarchyGraph is the NodeIt type of the actual layer. |
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195 | typedef typename Gact::NodeIt NodeIt; |
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196 | |
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197 | |
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198 | /// The base type of the edge iterators. |
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199 | /// The Edge type of the HierarchyGraph is the Edge type of the actual layer. |
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200 | typedef typename Gact::Edge Edge; |
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201 | |
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202 | |
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203 | /// This iterator goes trough the outgoing edges of a node. |
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204 | |
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205 | /// This iterator goes trough the \e outgoing edges of a certain node |
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206 | /// of a graph. |
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207 | /// Its usage is quite simple, for example you can count the number |
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208 | /// of outgoing edges of a node \c n |
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209 | /// in graph \c G of type \c Graph as follows. |
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210 | /// \code |
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211 | ///int count=0; |
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212 | ///for(Graph::OutEdgeIt e(G,n);G.valid(e);G.next(e)) count++; |
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213 | /// \endcode |
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214 | /// The OutEdgeIt type of the HierarchyGraph is the OutEdgeIt type of the actual layer. |
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215 | typedef typename Gact::OutEdgeIt OutEdgeIt; |
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216 | |
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217 | |
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218 | /// This iterator goes trough the incoming edges of a node. |
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219 | |
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220 | /// This iterator goes trough the \e incoming edges of a certain node |
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221 | /// of a graph. |
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222 | /// Its usage is quite simple, for example you can count the number |
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223 | /// of outgoing edges of a node \c n |
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224 | /// in graph \c G of type \c Graph as follows. |
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225 | /// \code |
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226 | ///int count=0; |
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227 | ///for(Graph::InEdgeIt e(G,n);G.valid(e);G.next(e)) count++; |
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228 | /// \endcode |
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229 | /// The InEdgeIt type of the HierarchyGraph is the InEdgeIt type of the actual layer. |
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230 | typedef typename Gact::InEdgeIt InEdgeIt; |
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231 | |
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232 | |
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233 | /// This iterator goes through each edge. |
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234 | |
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235 | /// This iterator goes through each edge of a graph. |
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236 | /// Its usage is quite simple, for example you can count the number |
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237 | /// of edges in a graph \c G of type \c Graph as follows: |
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238 | /// \code |
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239 | ///int count=0; |
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240 | ///for(Graph::EdgeIt e(G);G.valid(e);G.next(e)) count++; |
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241 | /// \endcode |
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242 | /// The EdgeIt type of the HierarchyGraph is the EdgeIt type of the actual layer. |
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243 | typedef typename Gact::EdgeIt EdgeIt; |
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244 | |
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245 | |
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246 | /// First node of the graph. |
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247 | |
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248 | /// \retval i the first node. |
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249 | /// \return the first node. |
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250 | typename Gact::NodeIt &first(typename Gact::NodeIt &i) const { return actuallayer.first(i);} |
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251 | |
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252 | |
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253 | /// The first incoming edge. |
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254 | typename Gact::InEdgeIt &first(typename Gact::InEdgeIt &i, typename Gact::Node) const { return actuallayer.first(i);} |
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255 | |
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256 | |
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257 | /// The first outgoing edge. |
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258 | typename Gact::OutEdgeIt &first(typename Gact::OutEdgeIt &i, typename Gact::Node) const { return actuallayer.first(i);} |
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259 | |
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260 | |
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261 | // SymEdgeIt &first(SymEdgeIt &, Node) const { return i;} |
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262 | /// The first edge of the Graph. |
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263 | typename Gact::EdgeIt &first(typename Gact::EdgeIt &i) const { return actuallayer.first(i);} |
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264 | |
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265 | |
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266 | // Node getNext(Node) const {} |
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267 | // InEdgeIt getNext(InEdgeIt) const {} |
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268 | // OutEdgeIt getNext(OutEdgeIt) const {} |
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269 | // //SymEdgeIt getNext(SymEdgeIt) const {} |
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270 | // EdgeIt getNext(EdgeIt) const {} |
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271 | |
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272 | |
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273 | /// Go to the next node. |
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274 | typename Gact::NodeIt &next(typename Gact::NodeIt &i) const { return actuallayer.next(i);} |
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275 | /// Go to the next incoming edge. |
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276 | typename Gact::InEdgeIt &next(typename Gact::InEdgeIt &i) const { return actuallayer.next(i);} |
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277 | /// Go to the next outgoing edge. |
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278 | typename Gact::OutEdgeIt &next(typename Gact::OutEdgeIt &i) const { return actuallayer.next(i);} |
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279 | //SymEdgeIt &next(SymEdgeIt &) const {} |
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280 | /// Go to the next edge. |
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281 | typename Gact::EdgeIt &next(typename Gact::EdgeIt &i) const { return actuallayer.next(i);} |
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282 | |
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283 | ///Gives back the head node of an edge. |
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284 | typename Gact::Node head(typename Gact::Edge edge) const { return actuallayer.head(edge); } |
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285 | ///Gives back the tail node of an edge. |
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286 | typename Gact::Node tail(typename Gact::Edge edge) const { return actuallayer.tail(edge); } |
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287 | |
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288 | // Node aNode(InEdgeIt) const {} |
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289 | // Node aNode(OutEdgeIt) const {} |
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290 | // Node aNode(SymEdgeIt) const {} |
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291 | |
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292 | // Node bNode(InEdgeIt) const {} |
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293 | // Node bNode(OutEdgeIt) const {} |
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294 | // Node bNode(SymEdgeIt) const {} |
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295 | |
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296 | /// Checks if a node iterator is valid |
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297 | |
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298 | ///\todo Maybe, it would be better if iterator converted to |
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299 | ///bool directly, as Jacint prefers. |
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300 | bool valid(const typename Gact::Node& node) const { return actuallayer.valid(node);} |
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301 | /// Checks if an edge iterator is valid |
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302 | |
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303 | ///\todo Maybe, it would be better if iterator converted to |
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304 | ///bool directly, as Jacint prefers. |
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305 | bool valid(const typename Gact::Edge& edge) const { return actuallayer.valid(edge);} |
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306 | |
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307 | ///Gives back the \e id of a node. |
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308 | |
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309 | ///\warning Not all graph structures provide this feature. |
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310 | /// |
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311 | int id(const typename Gact::Node & node) const { return actuallayer.id(node);} |
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312 | ///Gives back the \e id of an edge. |
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313 | |
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314 | ///\warning Not all graph structures provide this feature. |
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315 | /// |
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316 | int id(const typename Gact::Edge & edge) const { return actuallayer.id(edge);} |
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317 | |
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318 | //void setInvalid(Node &) const {}; |
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319 | //void setInvalid(Edge &) const {}; |
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320 | |
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321 | ///Add a new node to the graph. |
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322 | |
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323 | /// \return the new node. |
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324 | /// |
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325 | typename Gact::Node addNode() { return actuallayer.addNode();} |
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326 | ///Add a new edge to the graph. |
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327 | |
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328 | ///Add a new edge to the graph with tail node \c tail |
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329 | ///and head node \c head. |
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330 | ///\return the new edge. |
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331 | typename Gact::Edge addEdge(typename Gact::Node node1, typename Gact::Node node2) { return actuallayer.addEdge(node1, node2);} |
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332 | |
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333 | /// Resets the graph. |
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334 | |
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335 | /// This function deletes all edges and nodes of the graph. |
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336 | /// It also frees the memory allocated to store them. |
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337 | void clear() {actuallayer.clear();} |
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338 | |
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339 | int nodeNum() const { return actuallayer.nodeNum();} |
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340 | int edgeNum() const { return actuallayer.edgeNum();} |
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341 | |
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342 | ///Read/write/reference map of the nodes to type \c T. |
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343 | |
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344 | ///Read/write/reference map of the nodes to type \c T. |
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345 | /// \sa MemoryMapSkeleton |
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346 | /// \todo We may need copy constructor |
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347 | /// \todo We may need conversion from other nodetype |
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348 | /// \todo We may need operator= |
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349 | /// \warning Making maps that can handle bool type (NodeMap<bool>) |
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350 | /// needs extra attention! |
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351 | |
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352 | template<class T> class NodeMap |
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353 | { |
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354 | public: |
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355 | typedef T ValueType; |
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356 | typedef Node KeyType; |
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357 | |
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358 | NodeMap(const HierarchyGraph &) {} |
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359 | NodeMap(const HierarchyGraph &, T) {} |
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360 | |
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361 | template<typename TT> NodeMap(const NodeMap<TT> &) {} |
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362 | |
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363 | /// Sets the value of a node. |
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364 | |
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365 | /// Sets the value associated with node \c i to the value \c t. |
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366 | /// |
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367 | void set(Node, T) {} |
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368 | // Gets the value of a node. |
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369 | //T get(Node i) const {return *(T*)0;} //FIXME: Is it necessary? |
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370 | T &operator[](Node) {return *(T*)0;} |
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371 | const T &operator[](Node) const {return *(T*)0;} |
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372 | |
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373 | /// Updates the map if the graph has been changed |
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374 | |
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375 | /// \todo Do we need this? |
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376 | /// |
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377 | void update() {} |
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378 | void update(T a) {} //FIXME: Is it necessary |
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379 | }; |
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380 | |
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381 | ///Read/write/reference map of the edges to type \c T. |
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382 | |
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383 | ///Read/write/reference map of the edges to type \c T. |
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384 | ///It behaves exactly in the same way as \ref NodeMap. |
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385 | /// \sa NodeMap |
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386 | /// \sa MemoryMapSkeleton |
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387 | /// \todo We may need copy constructor |
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388 | /// \todo We may need conversion from other edgetype |
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389 | /// \todo We may need operator= |
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390 | template<class T> class EdgeMap |
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391 | { |
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392 | public: |
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393 | typedef T ValueType; |
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394 | typedef Edge KeyType; |
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395 | |
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396 | EdgeMap(const HierarchyGraph &) {} |
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397 | EdgeMap(const HierarchyGraph &, T ) {} |
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398 | |
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399 | ///\todo It can copy between different types. |
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400 | /// |
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401 | template<typename TT> EdgeMap(const EdgeMap<TT> &) {} |
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402 | |
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403 | void set(Edge, T) {} |
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404 | //T get(Edge) const {return *(T*)0;} |
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405 | T &operator[](Edge) {return *(T*)0;} |
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406 | const T &operator[](Edge) const {return *(T*)0;} |
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407 | |
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408 | void update() {} |
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409 | void update(T a) {} //FIXME: Is it necessary |
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410 | }; |
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411 | }; |
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412 | |
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413 | /// An empty eraseable graph class. |
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414 | |
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415 | /// This class provides all the common features of an \e eraseable graph |
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416 | /// structure, |
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417 | /// however completely without implementations and real data structures |
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418 | /// behind the interface. |
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419 | /// All graph algorithms should compile with this class, but it will not |
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420 | /// run properly, of course. |
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421 | /// |
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422 | /// \todo This blabla could be replaced by a sepatate description about |
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423 | /// Skeletons. |
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424 | /// |
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425 | /// It can be used for checking the interface compatibility, |
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426 | /// or it can serve as a skeleton of a new graph structure. |
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427 | /// |
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428 | /// Also, you will find here the full documentation of a certain graph |
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429 | /// feature, the documentation of a real graph imlementation |
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430 | /// like @ref ListGraph or |
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431 | /// @ref SmartGraph will just refer to this structure. |
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432 | template <typename Gact, typename Gsub> |
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433 | class EraseableHierarchyGraph : public HierarchyGraph<Gact, Gsub> |
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434 | { |
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435 | public: |
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436 | /// Deletes a node. |
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437 | void erase(typename Gact::Node n) {actuallayer.erase(n);} |
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438 | /// Deletes an edge. |
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439 | void erase(typename Gact::Edge e) {actuallayer.erase(e);} |
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440 | |
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441 | /// Defalult constructor. |
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442 | EraseableHierarchyGraph() {} |
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443 | ///Copy consructor. |
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444 | EraseableHierarchyGraph(const HierarchyGraph<Gact, Gsub> &EPG) {} |
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445 | }; |
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446 | |
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447 | |
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448 | // @} |
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449 | |
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450 | } //namespace hugo |
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451 | |
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452 | |
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453 | #endif // HUGO_SKELETON_GRAPH_H |
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