NBHelpers.cpp

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/****************************************************************************/
// Some mathematical helper methods
/****************************************************************************/
// SUMO, Simulation of Urban MObility; see http://sumo.sourceforge.net/
// Copyright 2001-2010 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 <cmath>
#include <string>
#include <sstream>
#include "NBNode.h"
#include "NBHelpers.h"
#include <utils/common/StringTokenizer.h>
#include <utils/geom/Position2D.h>
#include <utils/geom/GeomHelper.h>
#include <iostream>

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


// ===========================================================================
// method definitions
// ===========================================================================
SUMOReal
NBHelpers::angle(SUMOReal x1, SUMOReal y1, SUMOReal x2, SUMOReal y2) {
    SUMOReal angle = (SUMOReal) atan2(x1-x2, y1-y2) * (SUMOReal) 180.0 / (SUMOReal) PI;
    if (angle<0) {
        angle = 360 + angle;
    }
    return angle;
}


SUMOReal
NBHelpers::relAngle(SUMOReal angle, SUMOReal x1, SUMOReal y1, SUMOReal x2, SUMOReal y2) {
    SUMOReal sec_angle = NBHelpers::angle(x1, y1, x2, y2);
    return relAngle(angle, sec_angle);
}


SUMOReal
NBHelpers::relAngle(SUMOReal angle1, SUMOReal angle2) {
    angle2 -= angle1;
    if (angle2>180)
        angle2 = (360 - angle2) * -1;
    while (angle2<-180)
        angle2 = 360 + angle2;
    return angle2;
}


SUMOReal
NBHelpers::normRelAngle(SUMOReal angle1, SUMOReal angle2) {
    SUMOReal rel = relAngle(angle1, angle2);
    if (rel<-170||rel>170)
        rel = -180;
    return rel;
}


std::string
NBHelpers::normalIDRepresentation(const std::string &id) {
    std::stringstream strm1(id);
    long numid;
    strm1 >> numid;
    std::stringstream strm2;
    strm2 << numid;
    return strm2.str();
}


SUMOReal
NBHelpers::distance(NBNode *node1, NBNode *node2) {
    return node1->getPosition().distanceTo(node2->getPosition());
}



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