C++ (Cpp) make_polygon Examples

Example #1

File: recursive_polygons.cpp Project: Adikteev/rtbkit-deps

bool test_recursive_boxes(MultiPolygon& result, int& index,
            Generator& generator,
            int level, bool triangular, p_q_settings const& settings)
{
    MultiPolygon p, q;

    // Generate two boxes
    if (level == 0)
    {
        p.resize(1);
        q.resize(1);
        make_polygon(p.front(), generator, triangular);
        make_polygon(q.front(), generator, triangular);
        bg::correct(p);
        bg::correct(q);
    }
    else
    {
        bg::correct(p);
        bg::correct(q);
        if (! test_recursive_boxes(p, index, generator, level - 1, triangular, settings)
            || ! test_recursive_boxes(q, index, generator, level - 1, triangular, settings))
        {
            return false;
        }
    }

    typedef typename boost::range_value<MultiPolygon>::type polygon;

    std::ostringstream out;
    out << "recursive_box_" << index++ << "_" << level;

    if (! test_overlay_p_q
        <
            polygon,
            typename bg::coordinate_type<MultiPolygon>::type
        >(out.str(), p, q, settings))
    {
        return false;
    }

    MultiPolygon mp;
    bg::detail::union_::union_insert
        <
            polygon
        >(p, q, std::back_inserter(mp));

    bg::unique(mp);
    bg::simplify(mp, result, 0.01);
    bg::correct(mp);
    return true;
}

Example #2

File: intersects.cpp Project: bstrong/boost-mirror

void test_intersects(int count_x, int count_y, int width_x, p_q_settings const& settings)
{
    MultiPolygon mp;

    make_polygon(mp, count_x, count_y, 0, width_x);

    bool const b = bg::intersects(mp);
    if (b)
    {
        std::cout << " YES";
    }

    if(settings.svg)
    {
        typedef typename bg::coordinate_type<MultiPolygon>::type coordinate_type;
        typedef typename bg::point_type<MultiPolygon>::type point_type;
        std::ostringstream filename;
        filename << "intersects_"
            << string_from_type<coordinate_type>::name()
            << ".svg";

        std::ofstream svg(filename.str().c_str());
        bg::svg_mapper<point_type> mapper(svg, 500, 500);
        mapper.add(mp);
        mapper.map(mp, "fill-opacity:0.5;fill:rgb(153,204,0);"
                "stroke:rgb(153,204,0);stroke-width:3");
    }
}