[174] | 1 | /* -*- C++ -*- |
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| 2 | * |
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| 3 | * This file is a part of LEMON, a generic C++ optimization library |
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| 4 | * |
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| 5 | * Copyright (C) 2003-2006 |
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| 6 | * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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| 7 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
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| 8 | * |
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| 9 | * Permission to use, modify and distribute this software is granted |
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| 10 | * provided that this copyright notice appears in all copies. For |
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| 11 | * precise terms see the accompanying LICENSE file. |
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| 12 | * |
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| 13 | * This software is provided "AS IS" with no warranty of any kind, |
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| 14 | * express or implied, and with no claim as to its suitability for any |
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| 15 | * purpose. |
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| 16 | * |
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| 17 | */ |
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| 18 | |
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[163] | 19 | #include <dijkstrabox.h> |
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[165] | 20 | #include <lemon/dijkstra.h> |
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| 21 | #include <lemon/suurballe.h> |
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| 22 | #include <lemon/path.h> |
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[163] | 23 | |
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| 24 | enum {INPUT, OUTPUT, MAP_NUM}; |
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| 25 | |
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| 26 | DijkstraBox::DijkstraBox(std::vector<std::string> t):AlgoBox() |
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| 27 | { |
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| 28 | init(t); |
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| 29 | } |
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| 30 | |
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[165] | 31 | SuurballeBox::SuurballeBox(std::vector<std::string> t):DijkstraBox(t) |
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| 32 | { |
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| 33 | Gtk::Adjustment * adjustment=new Gtk::Adjustment(2, 1, 20, 1, 5); |
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| 34 | num_set = new Gtk::SpinButton(*adjustment, 5,0); |
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| 35 | |
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| 36 | Gtk::Label * label=new Gtk::Label("No. of paths to find: "); |
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| 37 | // hbox.pack_start(*label); |
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| 38 | // hbox.pack_start(*num_set); |
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| 39 | // hbox.show_all_children(); |
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| 40 | |
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| 41 | table.attach(*label, 0,1,2,3); |
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| 42 | table.attach(*num_set, 1,2,2,3); |
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| 43 | |
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| 44 | |
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| 45 | // pack_start(hbox); |
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| 46 | } |
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| 47 | |
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[163] | 48 | void DijkstraBox::run() |
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| 49 | { |
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| 50 | if( |
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| 51 | tabcbt.get_active_text()!="" && |
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| 52 | (edgemapcbts[INPUT])->get_active_text()!="" && |
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| 53 | (edgemapcbts[OUTPUT])->get_active_text()!="" && |
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| 54 | source.get_active_text()!="" && |
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| 55 | target.get_active_text()!="" |
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| 56 | ) |
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| 57 | { |
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| 58 | const Graph &g=mapstorage->graph; |
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[165] | 59 | Node from, to; |
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[163] | 60 | |
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[165] | 61 | get_from_to(from, to, (Graph&)g); |
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[163] | 62 | |
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| 63 | std::ostringstream o; |
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| 64 | |
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| 65 | if(!(from==to)) |
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| 66 | { |
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[165] | 67 | Graph::EdgeMap<double> * inputmap= |
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| 68 | (mapstorage->edgemap_storage)[(edgemapcbts[INPUT])->get_active_text()]; |
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| 69 | Graph::EdgeMap<double> * outputmap= |
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| 70 | (mapstorage->edgemap_storage)[(edgemapcbts[OUTPUT])->get_active_text()]; |
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| 71 | |
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| 72 | //zero out output map |
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| 73 | for (EdgeIt i(g); i!=INVALID; ++i) |
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| 74 | { |
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| 75 | (*outputmap)[i]=0; |
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| 76 | } |
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| 77 | |
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[163] | 78 | Dijkstra<Graph, Graph::EdgeMap<double> > dijkstra(g, *inputmap); |
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| 79 | dijkstra.run(from, to); |
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[165] | 80 | |
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[163] | 81 | if(dijkstra.reached(to)) |
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| 82 | { |
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| 83 | Node n=to; |
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| 84 | int length=0; |
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| 85 | while (n!=INVALID && n!=from) |
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| 86 | { |
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| 87 | Edge e=dijkstra.predEdge(n); |
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| 88 | (*outputmap)[e]=1; |
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| 89 | n=dijkstra.predNode(n); |
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| 90 | length++; |
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| 91 | } |
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| 92 | o << "Result: " << length << " long path, with cost " << dijkstra.dist(to); |
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| 93 | } |
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| 94 | else |
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| 95 | { |
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| 96 | o << "Result: failed to find shortest path between "; |
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| 97 | o << source.get_active_text() << " and " << target.get_active_text(); |
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| 98 | } |
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| 99 | resultlabel.set_text(o.str()); |
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[165] | 100 | |
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| 101 | mapstorage->mapChanged(true, (edgemapcbts[OUTPUT])->get_active_text()); |
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| 102 | // mapstorage->changeActiveMap(true, E_COLOR, |
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| 103 | // (edgemapcbts[OUTPUT])->get_active_text()); |
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| 104 | // mapstorage->changeActiveMap(true, E_TEXT, |
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| 105 | // (edgemapcbts[INPUT])->get_active_text()); |
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| 106 | } |
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| 107 | } |
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| 108 | } |
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[163] | 109 | |
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[165] | 110 | void SuurballeBox::run() |
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| 111 | { |
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| 112 | if( |
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| 113 | tabcbt.get_active_text()!="" && |
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| 114 | (edgemapcbts[INPUT])->get_active_text()!="" && |
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| 115 | (edgemapcbts[OUTPUT])->get_active_text()!="" && |
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| 116 | source.get_active_text()!="" && |
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| 117 | target.get_active_text()!="" |
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| 118 | ) |
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| 119 | { |
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| 120 | const Graph &g=mapstorage->graph; |
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| 121 | Node from, to; |
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| 122 | |
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| 123 | get_from_to(from, to, (Graph&)g); |
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| 124 | |
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| 125 | std::ostringstream o; |
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| 126 | |
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| 127 | if(!(from==to)) |
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| 128 | { |
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| 129 | Graph::EdgeMap<double> * inputmap= |
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| 130 | (mapstorage->edgemap_storage)[(edgemapcbts[INPUT])->get_active_text()]; |
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| 131 | Graph::EdgeMap<double> * outputmap= |
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| 132 | (mapstorage->edgemap_storage)[(edgemapcbts[OUTPUT])->get_active_text()]; |
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| 133 | |
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| 134 | //zero out output map |
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| 135 | for (EdgeIt i(g); i!=INVALID; ++i) |
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| 136 | { |
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| 137 | (*outputmap)[i]=0; |
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| 138 | } |
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| 139 | |
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| 140 | Suurballe<Graph, Graph::EdgeMap<double> > sb((Graph&)g, *inputmap, from, to); |
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| 141 | |
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| 142 | int found=sb.run(num_set->get_value_as_int()); |
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| 143 | if(found) |
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| 144 | { |
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| 145 | for(int j=0;j<found;j++) |
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| 146 | { |
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[188] | 147 | Path<Graph> path; |
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| 148 | path=sb.path(j); |
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[165] | 149 | for(int k=0;k<path.length();k++) |
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| 150 | { |
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[188] | 151 | (*outputmap)[path.nth(k)]=j+1; |
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[165] | 152 | } |
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| 153 | } |
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| 154 | o << "Result: found " << found << " paths between "; |
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| 155 | o << source.get_active_text() << " and " << target.get_active_text(); |
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| 156 | } |
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| 157 | else |
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| 158 | { |
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| 159 | o << "Result: failed to find shortest path between "; |
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| 160 | o << source.get_active_text() << " and " << target.get_active_text(); |
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| 161 | } |
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| 162 | resultlabel.set_text(o.str()); |
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| 163 | |
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[163] | 164 | mapstorage->mapChanged(true, (edgemapcbts[OUTPUT])->get_active_text()); |
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[165] | 165 | // mapstorage->changeActiveMap(true, E_COLOR, |
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| 166 | // (edgemapcbts[OUTPUT])->get_active_text()); |
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| 167 | // mapstorage->changeActiveMap(true, E_TEXT, |
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| 168 | // (edgemapcbts[INPUT])->get_active_text()); |
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[163] | 169 | } |
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| 170 | } |
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| 171 | } |
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| 172 | |
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| 173 | void DijkstraBox::build_box() |
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| 174 | { |
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| 175 | //if active tab is changed, labels of graph nodes had to be loaded into comboboxes |
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| 176 | //this can be done after the maps are loaded into ComboBoxes |
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| 177 | signal_upon_maplist_updated().connect(sigc::mem_fun(*this, &DijkstraBox::maplists_updated)); |
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| 178 | |
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| 179 | addMapSelector("Cost map: ", true); |
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| 180 | addMapSelector("Edges of path here: ", true); |
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| 181 | |
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| 182 | Gtk::Label * source_label=new Gtk::Label("Source: "); |
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| 183 | Gtk::Label * target_label=new Gtk::Label("Target: "); |
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| 184 | |
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| 185 | table.attach(*source_label, 0,1,0,1); |
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| 186 | table.attach(*target_label, 0,1,1,2); |
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| 187 | table.attach(source, 1,2,0,1); |
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| 188 | table.attach(target, 1,2,1,2); |
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| 189 | |
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| 190 | |
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| 191 | pack_start(table); |
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| 192 | |
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| 193 | resultlabel.set_text("Result: algorithm is not run yet."); |
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| 194 | pack_start(resultlabel); |
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| 195 | } |
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| 196 | |
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[165] | 197 | void SuurballeBox::build_box() |
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| 198 | { |
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| 199 | } |
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| 200 | |
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[163] | 201 | void DijkstraBox::maplists_updated() |
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| 202 | { |
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| 203 | if(tabcbt.get_active_text()!="") |
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| 204 | { |
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| 205 | source.clear(); |
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| 206 | target.clear(); |
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| 207 | const Graph &g=mapstorage->graph; |
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| 208 | for (NodeIt i(g); i!=INVALID; ++i) |
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| 209 | { |
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| 210 | std::ostringstream text; |
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| 211 | text << (*((mapstorage->nodemap_storage)["label"]))[i]; |
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| 212 | source.prepend_text(text.str()); |
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| 213 | target.prepend_text(text.str()); |
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| 214 | } |
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| 215 | } |
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| 216 | } |
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[165] | 217 | |
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| 218 | void DijkstraBox::get_from_to(Node & from, Node & to, Graph & g) |
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| 219 | { |
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| 220 | int assigned=0; |
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| 221 | for (NodeIt i(g); (i!=INVALID) && (assigned<2); ++i) |
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| 222 | { |
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| 223 | std::ostringstream text; |
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| 224 | text << (*((mapstorage->nodemap_storage)["label"]))[i]; |
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| 225 | if(!(text.str().compare(source.get_active_text()))) |
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| 226 | { |
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| 227 | from=i; |
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| 228 | assigned++; |
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| 229 | } |
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| 230 | if(!(text.str().compare(target.get_active_text()))) |
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| 231 | { |
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| 232 | to=i; |
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| 233 | assigned++; |
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| 234 | } |
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| 235 | } |
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| 236 | } |
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