Пример #1
0
void quickhull(const pointVec_t &points, pointVec_t &hull) {
    if (points.size() < 2) {
        hull.insert(hull.end(), points.begin(), points.end());
        return;
    }
    point_t p_maxx = extremum<FindXExtremum::maxX>(points);
    point_t p_minx = extremum<FindXExtremum::minX>(points);

    pointVec_t H;

    divide_and_conquer(points, hull, p_maxx, p_minx);
    divide_and_conquer(points, H, p_minx, p_maxx);
    hull.insert(hull.end(), H.begin(), H.end());
}
Пример #2
0
point_t divide(const pointVec_t &P, pointVec_t &P_reduced, const point_t &p1, const point_t &p2) {
    SplitByCP splitByCP(p1, p2, P_reduced);
    point_t farPoint = std::for_each(P.begin(), P.end(), splitByCP);

    if(util::verbose) {
        std::stringstream ss;
        ss << P.size() << " nodes in bucket"<< ", "
            << "dividing by: [ " << p1 << ", " << p2 << " ], "
            << "farthest node: " << farPoint;
        util::OUTPUT.push_back(ss.str());
    }

    return farPoint;
}
Пример #3
0
void quickhull(const pointVec_t &points, pointVec_t &hull, bool buffered) {
    if (points.size() < 2) {
#if USECONCVEC
        appendVector(points, hull);
#else // STD::VECTOR
        hull.insert(hull.end(), points.begin(), points.end());
#endif // USECONCVEC
        return;
    }

    point_t p_maxx = extremum<FindXExtremum::maxX>(points);
    point_t p_minx = extremum<FindXExtremum::minX>(points);

    pointVec_t H;

    divide_and_conquer(points, hull, p_maxx, p_minx, buffered);
    divide_and_conquer(points, H, p_minx, p_maxx, buffered);
#if USECONCVEC
    appendVector(H, hull);
#else // STD::VECTOR
    hull.insert(hull.end(), H.begin(), H.end());
#endif // USECONCVEC
}
Пример #4
0
void appendVector(const pointVec_t& src, pointVec_t& dest) {
    std::copy(src.begin(), src.end(), dest.grow_by(src.size()));
}
Пример #5
0
point_t extremum(const pointVec_t &points) {
    assert(!points.empty());
    return std::for_each(points.begin(), points.end(), FindXExtremum(points[0], type));
}
Пример #6
0
void appendVector(mutex_t& insertMutex, const pointVec_t& src, pointVec_t& dest) {
    mutex_t::scoped_lock lock(insertMutex);
    dest.insert(dest.end(), src.begin(), src.end());
}