NBTrafficLightLogic.cpp

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/****************************************************************************/
// A SUMO-compliant built logic for a traffic light
/****************************************************************************/
// SUMO, Simulation of Urban MObility; see http://sumo.sourceforge.net/
// Copyright (C) 2001-2011 DLR (http://www.dlr.de/) and contributors
/****************************************************************************/
//
//   This program is free software; you can redistribute it and/or modify
//   it under the terms of the GNU General Public License as published by
//   the Free Software Foundation; either version 2 of the License, or
//   (at your option) any later version.
//
/****************************************************************************/


// ===========================================================================
// included modules
// ===========================================================================
#ifdef _MSC_VER
#include <windows_config.h>
#else
#include <config.h>
#endif

#include <vector>
#include <bitset>
#include <utility>
#include <string>
#include <sstream>
#include <cassert>
#include "NBEdge.h"
#include "NBEdgeCont.h"
#include "NBTrafficLightLogic.h"
#include <utils/options/OptionsCont.h>
#include <utils/options/Option.h>
#include <utils/common/ToString.h>
#include <utils/common/StringTokenizer.h>
#include <utils/iodevices/OutputDevice.h>

#ifdef CHECK_MEMORY_LEAKS
#include <foreign/nvwa/debug_new.h>
#endif // CHECK_MEMORY_LEAKS


// ===========================================================================
// static members
// ===========================================================================
const char NBTrafficLightLogic::allowedStatesInitializer[] = {LINKSTATE_TL_GREEN_MAJOR,
        LINKSTATE_TL_GREEN_MINOR,
        LINKSTATE_TL_RED,
        LINKSTATE_TL_YELLOW_MAJOR,
        LINKSTATE_TL_YELLOW_MINOR,
        LINKSTATE_TL_OFF_BLINKING,
        LINKSTATE_TL_OFF_NOSIGNAL
                                                             };

const std::string NBTrafficLightLogic::ALLOWED_STATES(NBTrafficLightLogic::allowedStatesInitializer);

// ===========================================================================
// member method definitions
// ===========================================================================
NBTrafficLightLogic::NBTrafficLightLogic(const std::string& id,
        const std::string& subid, unsigned int noLinks) throw() :
    Named(id), myNumLinks(noLinks), mySubID(subid),
    myOffset(0) {}

NBTrafficLightLogic::NBTrafficLightLogic(const NBTrafficLightLogic* logic) :
    Named(logic->getID()),
    myNumLinks(logic->myNumLinks),
    mySubID(logic->getProgramID()),
    myOffset(logic->getOffset()),
    myPhases(logic->myPhases.begin(), logic->myPhases.end()) {}


NBTrafficLightLogic::~NBTrafficLightLogic() throw() {}


void
NBTrafficLightLogic::addStep(SUMOTime duration, const std::string& state, int index) {
    // check state size
    if (myNumLinks == 0) {
        // initialize
        myNumLinks = (unsigned int)state.size();
    } else if (state.size() != myNumLinks) {
        throw ProcessError("When adding phase: state length of " + toString(state.size()) +
                           " does not match declared number of links " + toString(myNumLinks));
    }
    // check state contents
    const size_t illegal = state.find_first_not_of(ALLOWED_STATES);
    if (std::string::npos != illegal) {
        throw ProcessError("When adding phase: illegal character '" + toString(state[illegal]) + "' in state");
    }
    // interpret index
    if (index < 0 || index >= (int)myPhases.size()) {
        // insert at the end
        index = (int)myPhases.size();
    }
    myPhases.insert(myPhases.begin() + index, PhaseDefinition(duration, state));
}


void
NBTrafficLightLogic::deletePhase(unsigned int index) {
    if (index >= myPhases.size()) {
        throw InvalidArgument("Index " + toString(index) + " out of range for logic with "
                              + toString(myPhases.size()) + " phases.");
    }
    myPhases.erase(myPhases.begin() + index);
}


void
NBTrafficLightLogic::resetPhases() {
    myNumLinks = 0;
    myPhases.clear();
}


SUMOTime
NBTrafficLightLogic::getDuration() const throw() {
    SUMOTime duration = 0;
    for (PhaseDefinitionVector::const_iterator i=myPhases.begin(); i!=myPhases.end(); ++i) {
        duration += (*i).duration;
    }
    return duration;
}


void
NBTrafficLightLogic::closeBuilding() throw() {
    for (unsigned int i=0; i<myPhases.size()-1;) {
        if (myPhases[i].state!=myPhases[i+1].state) {
            ++i;
            continue;
        }
        myPhases[i].duration += myPhases[i+1].duration;
        myPhases.erase(myPhases.begin()+i+1);
    }
}


void
NBTrafficLightLogic::setPhaseState(unsigned int phaseIndex, int tlIndex, LinkState linkState) {
    assert(phaseIndex < myPhases.size());
    std::string& phaseState = myPhases[phaseIndex].state;
    assert(tlIndex < phaseState.size());
    phaseState[tlIndex] = (char)linkState;
}


void
NBTrafficLightLogic::setPhaseDuration(unsigned int phaseIndex, SUMOTime duration) {
    assert(phaseIndex < myPhases.size());
    myPhases[phaseIndex].duration = duration;
}


/****************************************************************************/