Ejemplo n.º 1
0
void render_pattern<image_rgba8>(rasterizer & ras,
                                 marker_svg const& marker,
                                 agg::trans_affine const& tr,
                                 double opacity,
                                 image_rgba8 & image)
{
    using pixfmt = agg::pixfmt_rgba32_pre;
    using renderer_base = agg::renderer_base<pixfmt>;
    using renderer_solid = agg::renderer_scanline_aa_solid<renderer_base>;
    agg::scanline_u8 sl;

    mapnik::box2d<double> const& bbox = marker.bounding_box() * tr;
    mapnik::coord<double,2> c = bbox.center();
    agg::trans_affine mtx = agg::trans_affine_translation(-c.x,-c.y);
    mtx.translate(0.5 * bbox.width(), 0.5 * bbox.height());
    mtx = tr * mtx;

    agg::rendering_buffer buf(image.bytes(), image.width(), image.height(), image.row_size());
    pixfmt pixf(buf);
    renderer_base renb(pixf);

    mapnik::svg::vertex_stl_adapter<mapnik::svg::svg_path_storage> stl_storage(marker.get_data()->source());
    mapnik::svg::svg_path_adapter svg_path(stl_storage);
    mapnik::svg::svg_renderer_agg<mapnik::svg::svg_path_adapter,
                                  agg::pod_bvector<mapnik::svg::path_attributes>,
                                  renderer_solid,
                                  pixfmt > svg_renderer(svg_path,
                                                        marker.get_data()->attributes());

    svg_renderer.render(ras, sl, renb, mtx, opacity, bbox);
}
Ejemplo n.º 2
0
    cairo_surface_ptr operator()(marker_svg const & marker) const
    {
        box2d<double> bbox(marker.bounding_box());
        agg::trans_affine tr(transform(bbox));

        double width = std::max(1.0, std::round(bbox.width()));
        double height = std::max(1.0, std::round(bbox.height()));
        cairo_rectangle_t extent { 0, 0, width, height };
        cairo_surface_ptr surface(
            cairo_recording_surface_create(
                CAIRO_CONTENT_COLOR_ALPHA, &extent),
            cairo_surface_closer());

        cairo_ptr cairo = create_context(surface);
        cairo_context context(cairo);

        svg_storage_type & svg = *marker.get_data();
        svg_attribute_type const& svg_attributes = svg.attributes();
        svg::vertex_stl_adapter<svg::svg_path_storage> stl_storage(
            svg.source());
        svg::svg_path_adapter svg_path(stl_storage);

        render_vector_marker(context, svg_path, svg_attributes,
            bbox, tr, opacity_);

        return surface;
    }
Ejemplo n.º 3
0
    void operator() (marker_svg const& mark) const
    {
        using namespace mapnik::svg;

        // https://github.com/mapnik/mapnik/issues/1316
        bool snap_to_pixels = !mapnik::marker_cache::instance().is_uri(filename_);

        agg::trans_affine image_tr = agg::trans_affine_scaling(common_.scale_factor_);

        svg_path_ptr stock_vector_marker = mark.get_data();
        svg_path_ptr marker_ptr = stock_vector_marker;
        bool is_ellipse = false;

        svg_attribute_type s_attributes;
        auto const& r_attributes = get_marker_attributes(stock_vector_marker, s_attributes);

        // special case for simple ellipse markers
        // to allow for full control over rx/ry dimensions
        if (filename_ == "shape://ellipse"
           && (has_key(sym_,keys::width) || has_key(sym_,keys::height)))
        {
            marker_ptr = std::make_shared<svg_storage_type>();
            is_ellipse = true;
        }
        else
        {
            box2d<double> const& bbox = mark.bounding_box();
            setup_transform_scaling(image_tr, bbox.width(), bbox.height(), feature_, common_.vars_, sym_);
        }

        vertex_stl_adapter<svg_path_storage> stl_storage(marker_ptr->source());
        svg_path_adapter svg_path(stl_storage);

        if (is_ellipse)
        {
            build_ellipse(sym_, feature_, common_.vars_, *marker_ptr, svg_path);
        }

        if (auto image_transform = get_optional<transform_type>(sym_, keys::image_transform))
        {
            evaluate_transform(image_tr, feature_, common_.vars_, *image_transform, common_.scale_factor_);
        }

        vector_dispatch_type rasterizer_dispatch(marker_ptr,
                                                 svg_path,
                                                 r_attributes,
                                                 image_tr,
                                                 sym_,
                                                 *common_.detector_,
                                                 common_.scale_factor_,
                                                 feature_,
                                                 common_.vars_,
                                                 snap_to_pixels,
                                                 renderer_context_);

        render_marker(mark, rasterizer_dispatch);
    }
    void operator() (marker_svg const& mark)
    {
        using namespace mapnik::svg;
        bool clip = get<value_bool, keys::clip>(sym_, feature_, common_.vars_);
        double offset = get<value_double, keys::offset>(sym_, feature_, common_.vars_);
        double simplify_tolerance = get<value_double, keys::simplify_tolerance>(sym_, feature_, common_.vars_);
        double smooth = get<value_double, keys::smooth>(sym_, feature_, common_.vars_);

        // https://github.com/mapnik/mapnik/issues/1316
        bool snap_to_pixels = !mapnik::marker_cache::instance().is_uri(filename_);

        agg::trans_affine geom_tr;
        auto transform = get_optional<transform_type>(sym_, keys::geometry_transform);
        if (transform) evaluate_transform(geom_tr, feature_, common_.vars_, *transform, common_.scale_factor_);
        agg::trans_affine image_tr = agg::trans_affine_scaling(common_.scale_factor_);

        boost::optional<svg_path_ptr> const& stock_vector_marker = mark.get_data();

        // special case for simple ellipse markers
        // to allow for full control over rx/ry dimensions
        if (filename_ == "shape://ellipse"
           && (has_key(sym_,keys::width) || has_key(sym_,keys::height)))
        {
            svg_path_ptr marker_ellipse = std::make_shared<svg_storage_type>();
            vertex_stl_adapter<svg_path_storage> stl_storage(marker_ellipse->source());
            svg_path_adapter svg_path(stl_storage);
            build_ellipse(sym_, feature_, common_.vars_, *marker_ellipse, svg_path);
            svg_attribute_type attributes;
            bool result = push_explicit_style( (*stock_vector_marker)->attributes(), attributes, sym_, feature_, common_.vars_);
            auto image_transform = get_optional<transform_type>(sym_, keys::image_transform);
            if (image_transform) evaluate_transform(image_tr, feature_, common_.vars_, *image_transform);
            vector_dispatch_type rasterizer_dispatch(marker_ellipse,
                                                     svg_path,
                                                     result ? attributes : (*stock_vector_marker)->attributes(),
                                                     image_tr,
                                                     sym_,
                                                     *common_.detector_,
                                                     common_.scale_factor_,
                                                     feature_,
                                                     common_.vars_,
                                                     snap_to_pixels,
                                                     renderer_context_);

            vertex_converter_type converter(clip_box_,
                                            sym_,
                                            common_.t_,
                                            prj_trans_,
                                            geom_tr,
                                            feature_,
                                            common_.vars_,
                                            common_.scale_factor_);
            if (clip) // optional clip (default: true)
            {
                geometry::geometry_types type = geometry::geometry_type(feature_.get_geometry());
                if (type == geometry::geometry_types::Polygon || type == geometry::geometry_types::MultiPolygon)
                    converter.template set<clip_poly_tag>();
                else if (type == geometry::geometry_types::LineString || type == geometry::geometry_types::MultiLineString)
                    converter.template set<clip_line_tag>();
            }

            converter.template set<transform_tag>(); //always transform
            if (std::fabs(offset) > 0.0) converter.template set<offset_transform_tag>(); // parallel offset
            converter.template set<affine_transform_tag>(); // optional affine transform
            if (simplify_tolerance > 0.0) converter.template set<simplify_tag>(); // optional simplify converter
            if (smooth > 0.0) converter.template set<smooth_tag>(); // optional smooth converter
            apply_markers_multi(feature_, common_.vars_, converter, rasterizer_dispatch, sym_);
        }
        else
        {
            box2d<double> const& bbox = mark.bounding_box();
            setup_transform_scaling(image_tr, bbox.width(), bbox.height(), feature_, common_.vars_, sym_);
            auto image_transform = get_optional<transform_type>(sym_, keys::image_transform);
            if (image_transform) evaluate_transform(image_tr, feature_, common_.vars_, *image_transform);
            vertex_stl_adapter<svg_path_storage> stl_storage((*stock_vector_marker)->source());
            svg_path_adapter svg_path(stl_storage);
            svg_attribute_type attributes;
            bool result = push_explicit_style( (*stock_vector_marker)->attributes(), attributes, sym_, feature_, common_.vars_);
            vector_dispatch_type rasterizer_dispatch(*stock_vector_marker,
                                                     svg_path,
                                                     result ? attributes : (*stock_vector_marker)->attributes(),
                                                     image_tr,
                                                     sym_,
                                                     *common_.detector_,
                                                     common_.scale_factor_,
                                                     feature_,
                                                     common_.vars_,
                                                     snap_to_pixels,
                                                     renderer_context_);

            vertex_converter_type converter(clip_box_,
                                            sym_,
                                            common_.t_,
                                            prj_trans_,
                                            geom_tr,
                                            feature_,
                                            common_.vars_,
                                            common_.scale_factor_);
            if (clip) // optional clip (default: true)
            {
                geometry::geometry_types type = geometry::geometry_type(feature_.get_geometry());
                if (type == geometry::geometry_types::Polygon || type == geometry::geometry_types::MultiPolygon)
                    converter.template set<clip_poly_tag>();
                else if (type == geometry::geometry_types::LineString || type == geometry::geometry_types::MultiLineString)
                    converter.template set<clip_line_tag>();
            }

            converter.template set<transform_tag>(); //always transform
            if (std::fabs(offset) > 0.0) converter.template set<offset_transform_tag>(); // parallel offset
            converter.template set<affine_transform_tag>(); // optional affine transform
            if (simplify_tolerance > 0.0) converter.template set<simplify_tag>(); // optional simplify converter
            if (smooth > 0.0) converter.template set<smooth_tag>(); // optional smooth converter
            apply_markers_multi(feature_, common_.vars_, converter, rasterizer_dispatch,  sym_);
        }
    }