r400:fa341dd6ab23
Mon, 01 Dec 2008 15:11:31
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/* -*- mode: C++; indent-tabs-mode: nil; -*- |
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* |
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* This file is a part of LEMON, a generic C++ optimization library. |
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* |
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* Copyright (C) 2003-2008 |
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* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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* (Egervary Research Group on Combinatorial Optimization, EGRES). |
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* |
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* Permission to use, modify and distribute this software is granted |
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* provided that this copyright notice appears in all copies. For |
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* precise terms see the accompanying LICENSE file. |
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* |
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* This software is provided "AS IS" with no warranty of any kind, |
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* express or implied, and with no claim as to its suitability for any |
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* purpose. |
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* |
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*/ |
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///\ingroup demos |
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///\file |
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///\brief Demonstrating the usage of LEMON's General Flow algorithm |
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/// |
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/// This demo program reads a general network circulation problem from the |
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/// file 'circulation-input.lgf', runs the preflow based algorithm for |
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/// finding a feasible solution and writes the output |
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/// to 'circulation-input.lgf' |
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/// |
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/// \include circulation_demo.cc |
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#include <iostream> |
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#include "test_tools.h" |
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#include <lemon/list_graph.h> |
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#include <lemon/circulation.h> |
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#include <lemon/lgf_reader.h> |
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using namespace lemon; |
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char test_lgf[] = |
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"@nodes\n" |
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"label delta\n" |
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"0 0\n" |
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"1 13\n" |
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"2 0\n" |
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"3 0\n" |
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"4 0\n" |
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"5 0\n" |
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"6 0\n" |
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"7 0\n" |
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"8 -13\n" |
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"9 0\n" |
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"@edges\n" |
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" label lo_cap up_cap\n" |
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"0 1 0 0 20\n" |
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"0 2 1 0 0\n" |
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"1 1 2 0 3\n" |
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"1 2 3 0 8\n" |
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"1 3 4 0 8\n" |
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"2 5 5 0 5\n" |
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"3 2 6 0 5\n" |
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"3 5 7 0 5\n" |
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"3 6 8 0 5\n" |
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"4 3 9 0 3\n" |
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"5 7 10 0 3\n" |
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"5 6 11 0 10\n" |
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"5 8 12 0 10\n" |
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"6 8 13 0 8\n" |
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"8 9 14 0 20\n" |
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"8 1 15 0 5\n" |
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"9 5 16 0 5\n" |
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"@attributes\n" |
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"source 1\n" |
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"sink 8\n"; |
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int main (int, char*[]) |
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{
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typedef ListDigraph Digraph; |
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typedef Digraph::Node Node; |
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typedef Digraph::NodeIt NodeIt; |
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typedef Digraph::Arc Arc; |
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typedef Digraph::ArcIt ArcIt; |
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typedef Digraph::ArcMap<int> ArcMap; |
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typedef Digraph::NodeMap<int> NodeMap; |
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typedef Digraph::NodeMap<double> DNodeMap; |
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Digraph g; |
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ArcMap lo(g); |
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ArcMap up(g); |
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NodeMap delta(g); |
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NodeMap nid(g); |
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ArcMap eid(g); |
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Node source, sink; |
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std::istringstream input(test_lgf); |
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DigraphReader<Digraph>(g,input). |
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arcMap("lo_cap", lo).
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arcMap("up_cap", up).
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nodeMap("delta", delta).
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arcMap("label", eid).
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nodeMap("label", nid).
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node("source",source).
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node("sink",sink).
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run(); |
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Circulation<Digraph> gen(g,lo,up,delta); |
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bool ret=gen.run(); |
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check(ret,"A feasible solution should have been found."); |
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check(gen.checkFlow(), "The found flow is corrupt."); |
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delta[source]=14; |
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delta[sink]=-14; |
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bool ret2=gen.run(); |
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check(!ret2,"A feasible solution should not have been found."); |
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check(gen.checkBarrier(), "The found barrier is corrupt."); |
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} |
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EXTRA_DIST += \ |
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demo/CMakeLists.txt \ |
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demo/circulation-input.lgf \ |
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demo/digraph.lgf |
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if WANT_DEMO |
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noinst_PROGRAMS += \ |
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demo/arg_parser_demo \ |
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demo/circulation_demo \ |
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demo/graph_to_eps_demo \ |
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demo/lgf_demo |
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endif WANT_DEMO |
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demo_arg_parser_demo_SOURCES = demo/arg_parser_demo.cc |
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demo_circulation_demo_SOURCES = demo/circulation_demo.cc |
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demo_graph_to_eps_demo_SOURCES = demo/graph_to_eps_demo.cc |
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demo_lgf_demo_SOURCES = demo/lgf_demo.cc |
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EXTRA_DIST += \ |
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test/CMakeLists.txt \ |
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test/min_cost_flow_test.lgf |
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noinst_HEADERS += \ |
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test/graph_test.h \ |
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test/test_tools.h |
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check_PROGRAMS += \ |
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test/bfs_test \ |
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test/circulation_test \ |
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test/counter_test \ |
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test/dfs_test \ |
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test/digraph_test \ |
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test/dijkstra_test \ |
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test/dim_test \ |
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test/error_test \ |
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test/graph_copy_test \ |
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test/graph_test \ |
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test/graph_utils_test \ |
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test/heap_test \ |
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test/kruskal_test \ |
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test/maps_test \ |
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test/max_matching_test \ |
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test/random_test \ |
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test/path_test \ |
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test/suurballe_test \ |
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test/test_tools_fail \ |
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test/test_tools_pass \ |
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test/time_measure_test \ |
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test/unionfind_test |
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TESTS += $(check_PROGRAMS) |
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XFAIL_TESTS += test/test_tools_fail$(EXEEXT) |
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test_bfs_test_SOURCES = test/bfs_test.cc |
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test_circulation_test_SOURCES = test/circulation_test.cc |
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test_counter_test_SOURCES = test/counter_test.cc |
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test_dfs_test_SOURCES = test/dfs_test.cc |
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test_digraph_test_SOURCES = test/digraph_test.cc |
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test_dijkstra_test_SOURCES = test/dijkstra_test.cc |
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test_dim_test_SOURCES = test/dim_test.cc |
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test_error_test_SOURCES = test/error_test.cc |
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test_graph_copy_test_SOURCES = test/graph_copy_test.cc |
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test_graph_test_SOURCES = test/graph_test.cc |
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test_graph_utils_test_SOURCES = test/graph_utils_test.cc |
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test_heap_test_SOURCES = test/heap_test.cc |
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test_kruskal_test_SOURCES = test/kruskal_test.cc |
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test_maps_test_SOURCES = test/maps_test.cc |
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test_max_matching_test_SOURCES = test/max_matching_test.cc |
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test_path_test_SOURCES = test/path_test.cc |
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test_suurballe_test_SOURCES = test/suurballe_test.cc |
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test_random_test_SOURCES = test/random_test.cc |
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test_test_tools_fail_SOURCES = test/test_tools_fail.cc |
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test_test_tools_pass_SOURCES = test/test_tools_pass.cc |
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test_time_measure_test_SOURCES = test/time_measure_test.cc |
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test_unionfind_test_SOURCES = test/unionfind_test.cc |
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@nodes |
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coordinates_x coordinates_y delta label |
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-396.638 -311.798 0 0 |
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154.409 -214.714 13 1 |
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-378.119 -135.808 0 2 |
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-138.182 -58.0452 0 3 |
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55 -76.1018 0 4 |
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-167.302 169.88 0 5 |
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71.6876 38.7452 0 6 |
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-328.784 257.777 0 7 |
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354.242 67.9628 -13 8 |
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147 266 0 9 |
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@edges |
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label lo_cap up_cap |
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0 1 0 0 20 |
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0 2 1 0 0 |
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1 1 2 0 3 |
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1 2 3 0 8 |
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1 3 4 0 8 |
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2 5 5 0 5 |
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3 2 6 0 5 |
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3 5 7 0 5 |
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3 6 8 0 5 |
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4 3 9 0 3 |
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5 7 10 0 3 |
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5 6 11 0 10 |
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5 8 12 0 10 |
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6 8 13 0 8 |
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8 9 14 0 20 |
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8 1 15 0 5 |
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9 5 16 0 5 |
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@end |
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/* -*- mode: C++; indent-tabs-mode: nil; -*- |
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| 2 |
* |
|
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* This file is a part of LEMON, a generic C++ optimization library. |
|
| 4 |
* |
|
| 5 |
* Copyright (C) 2003-2008 |
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* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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| 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
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* |
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* Permission to use, modify and distribute this software is granted |
|
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* 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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* |
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* This software is provided "AS IS" with no warranty of any kind, |
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* express or implied, and with no claim as to its suitability for any |
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* purpose. |
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* |
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*/ |
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|
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///\ingroup demos |
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///\file |
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///\brief Demonstrating the usage of LEMON's General Flow algorithm |
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/// |
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/// This demo program reads a general network circulation problem from the |
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/// file 'circulation-input.lgf', runs the preflow based algorithm for |
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/// finding a feasible solution and writes the output |
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/// to 'circulation-input.lgf' |
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/// |
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/// \include circulation_demo.cc |
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#include <iostream> |
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#include <lemon/list_graph.h> |
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#include <lemon/circulation.h> |
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#include <lemon/lgf_reader.h> |
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#include <lemon/lgf_writer.h> |
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using namespace lemon; |
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int main (int, char*[]) |
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{
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typedef ListDigraph Digraph; |
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typedef Digraph::Node Node; |
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typedef Digraph::NodeIt NodeIt; |
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typedef Digraph::Arc Arc; |
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typedef Digraph::ArcIt ArcIt; |
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typedef Digraph::ArcMap<int> ArcMap; |
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typedef Digraph::NodeMap<int> NodeMap; |
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typedef Digraph::NodeMap<double> DNodeMap; |
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Digraph g; |
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ArcMap lo(g); |
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ArcMap up(g); |
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NodeMap delta(g); |
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NodeMap nid(g); |
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ArcMap eid(g); |
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DNodeMap cx(g); |
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DNodeMap cy(g); |
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DigraphReader<Digraph>(g,"circulation-input.lgf"). |
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arcMap("lo_cap", lo).
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arcMap("up_cap", up).
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nodeMap("delta", delta).
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arcMap("label", eid).
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nodeMap("label", nid).
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nodeMap("coordinates_x", cx).
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nodeMap("coordinates_y", cy).
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run(); |
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Circulation<Digraph> gen(g,lo,up,delta); |
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bool ret=gen.run(); |
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if(ret) |
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{
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std::cout << "\nA feasible flow has been found.\n"; |
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if(!gen.checkFlow()) std::cerr << "Oops!!!\n"; |
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DigraphWriter<Digraph>(g, "circulation-output.lgf"). |
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arcMap("lo_cap", lo).
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arcMap("up_cap", up).
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arcMap("flow", gen.flowMap()).
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nodeMap("delta", delta).
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arcMap("label", eid).
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nodeMap("label", nid).
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nodeMap("coordinates_x", cx).
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nodeMap("coordinates_y", cy).
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run(); |
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} |
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else {
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std::cout << "\nThere is no such a flow\n"; |
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Digraph::NodeMap<int> bar(g); |
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gen.barrierMap(bar); |
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if(!gen.checkBarrier()) std::cerr << "Dual Oops!!!\n"; |
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DigraphWriter<Digraph>(g, "circulation-output.lgf"). |
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arcMap("lo_cap", lo).
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arcMap("up_cap", up).
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nodeMap("barrier", bar).
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nodeMap("delta", delta).
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arcMap("label", eid).
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nodeMap("label", nid).
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nodeMap("coordinates_x", cx).
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nodeMap("coordinates_y", cy).
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run(); |
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} |
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std::cout << "The output is written to file 'circulation-output.lgf'\n\n"; |
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} |
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