1 | /* -*- C++ -*- |
---|
2 | * |
---|
3 | * This file is a part of LEMON, a generic C++ optimization library |
---|
4 | * |
---|
5 | * Copyright (C) 2003-2006 |
---|
6 | * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
---|
7 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
---|
8 | * |
---|
9 | * Permission to use, modify and distribute this software is granted |
---|
10 | * provided that this copyright notice appears in all copies. For |
---|
11 | * precise terms see the accompanying LICENSE file. |
---|
12 | * |
---|
13 | * This software is provided "AS IS" with no warranty of any kind, |
---|
14 | * express or implied, and with no claim as to its suitability for any |
---|
15 | * purpose. |
---|
16 | * |
---|
17 | */ |
---|
18 | |
---|
19 | #include <lemon/list_graph.h> |
---|
20 | #include <lemon/graph_reader.h> |
---|
21 | #include <lemon/iterable_maps.h> |
---|
22 | #include <lemon/dim2.h> |
---|
23 | #include <lemon/graph_to_eps.h> |
---|
24 | |
---|
25 | |
---|
26 | using namespace lemon; |
---|
27 | |
---|
28 | GRAPH_TYPEDEFS(ListGraph) |
---|
29 | |
---|
30 | int main(int argc, char** argv) |
---|
31 | { |
---|
32 | if(argc!=2) { |
---|
33 | std::cerr << "\n USAGE: " << argv[0] |
---|
34 | << " input_file.lgf" << std::endl << std::endl; |
---|
35 | std::cerr << " The file 'input_file.lgf' has to contain " |
---|
36 | << "at least three node maps called \n 'f', 'coordinates_x' " |
---|
37 | << "and 'coordinates_y'.\n" |
---|
38 | << " The in-degree requirement is given by 'f', while the two " |
---|
39 | << "others is used\n to create to output drawing." |
---|
40 | << std::endl; |
---|
41 | return 1; |
---|
42 | } |
---|
43 | |
---|
44 | ListGraph g; |
---|
45 | |
---|
46 | ListGraph::NodeMap<int> f(g); //in-deg requirement; |
---|
47 | ListGraph::NodeMap<int> label(g); |
---|
48 | ListGraph::NodeMap<dim2::Point<double> > coords(g); |
---|
49 | |
---|
50 | try { |
---|
51 | GraphReader<ListGraph> reader(argv[1],g); |
---|
52 | reader.readNodeMap("f",f); |
---|
53 | reader.readNodeMap("label",label); |
---|
54 | reader.readNodeMap("coordinates_x",xMap(coords)); |
---|
55 | reader.readNodeMap("coordinates_y",yMap(coords)); |
---|
56 | reader.run(); |
---|
57 | } catch (DataFormatError& error) { |
---|
58 | std::cerr << error.what() << std::endl; |
---|
59 | return 1; |
---|
60 | } |
---|
61 | |
---|
62 | |
---|
63 | ListGraph::NodeMap<int> level(g,0); |
---|
64 | |
---|
65 | ListGraph::NodeMap<int> def(g); //deficiency of the nodes |
---|
66 | def = subMap(f,InDegMap<ListGraph>(g)); |
---|
67 | |
---|
68 | IterableBoolMap<ListGraph, Node> active(g,false); |
---|
69 | for(NodeIt n(g);n!=INVALID;++n) active[n]=(def[n]>0); |
---|
70 | |
---|
71 | ListGraph::EdgeMap<bool> rev(g,false); // rev[e]==true <=> e is to be |
---|
72 | // reversed |
---|
73 | |
---|
74 | int nodeNum=countNodes(g); |
---|
75 | |
---|
76 | Node act; |
---|
77 | while((act=IterableBoolMap<ListGraph, Node>::TrueIt(active))!=INVALID) { |
---|
78 | std::cout << "Process node " << label[act] |
---|
79 | << " (def=" << def[act] |
---|
80 | << " lev=" << level[act] << "): "; |
---|
81 | OutEdgeIt e(g,act); |
---|
82 | while(e!=INVALID && level[g.target(e)]>=level[act]) ++e; |
---|
83 | if(e!=INVALID) { |
---|
84 | std::cout << " REVERT EDGE " << g.id(e) |
---|
85 | << " (" << label[g.source(e)] << "---" |
---|
86 | << label[g.target(e)] << ")" |
---|
87 | << std::endl; |
---|
88 | if(--def[act]==0) active[act]=false; |
---|
89 | if(++def[g.target(e)]>0) active[g.target(e)]=true; |
---|
90 | g.reverseEdge(e); |
---|
91 | rev[e]=!rev[e]; |
---|
92 | } |
---|
93 | else { |
---|
94 | std::cout << " LIFT" << std::endl; |
---|
95 | if(++level[act]>nodeNum) { |
---|
96 | std::cout << "NINCS ILYEN\n"; |
---|
97 | return 1; |
---|
98 | } |
---|
99 | } |
---|
100 | } |
---|
101 | |
---|
102 | //Show the graph |
---|
103 | |
---|
104 | graphToEps(g,"graph_orientation.eps").scaleToA4(). |
---|
105 | title("Sample .eps figure (fits to A4)"). |
---|
106 | copyright("(C) 2006 LEMON Project"). |
---|
107 | absoluteNodeSizes().absoluteEdgeWidths(). |
---|
108 | nodeScale(15). |
---|
109 | coords(coords). |
---|
110 | negateY(). |
---|
111 | edgeColors(composeMap(Palette(),rev)). |
---|
112 | edgeWidthScale(1). |
---|
113 | nodeTexts(f).nodeTextSize(20). |
---|
114 | drawArrows().arrowWidth(10).arrowLength(10). |
---|
115 | run(); |
---|
116 | |
---|
117 | |
---|
118 | } //end of main() |
---|
119 | |
---|
120 | |
---|