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// Сравнение плота с треком на совпадение координат.
static bool ComparePlotTrackCoord(const Track *track, const Plot *plot,
        const TargetInfo *targetInfo, const TrackerZoneSettings &zoneSettings) {
	// разность по времени
    CT9_DIFF timeDiff = plot->timeOfPoint - track->point.timeOfPoint;
    bool isShortGap = (timeDiff < MS_TO_NS(zoneSettings.shortGapTime));

	// строб по координатам
    double posError = hypot(plot->coord.x - track->point.coord.x, plot->coord.y - track->point.coord.y);
    double posGate = isShortGap ? zoneSettings.shortGapGate : zoneSettings.longGapGate;
    bool fitGap = posError <= posGate;

	// строб по высоте
	double plotAlt = GetAltitudeFromTargetInfo(targetInfo);
    boost::tribool fitAlt = boost::indeterminate;
    if (!std::isnan(track->point.alt) && !std::isnan(plotAlt)) {
		double altError = fabs(plotAlt - track->point.alt);
        double altGate = isShortGap ? zoneSettings.shortGapAltGate : zoneSettings.longGapAltGate;
        fitAlt = altError <= altGate;
	}

    // ошибка по траектории
    boost::tribool fitTraj = boost::indeterminate;
    if (track->trajectory) {
        CartCoord predictedPos;
        if (track->trajectory->predictPoint(plot->timeOfPoint, predictedPos)) {
            double trajError = hypot(plot->coord.x - predictedPos.x, plot->coord.y - predictedPos.y);
            double maxTrajError = isShortGap ? zoneSettings.shortGapMaxTrajError : zoneSettings.longGapMaxTrajError;
            fitTraj = trajError <= maxTrajError;
        }
    }

    return (((boost::indeterminate(fitTraj) || !zoneSettings.onlyTrajError) && fitGap) || (bool)fitTraj) &&
            (boost::indeterminate(fitAlt) || (bool)fitAlt);
}