void grid_renderer<T>::process(polygon_pattern_symbolizer const& sym,
                               mapnik::feature_impl & feature,
                               proj_transform const& prj_trans)
{
    std::string filename = path_processor_type::evaluate( *sym.get_filename(), feature);

    boost::optional<marker_ptr> mark = marker_cache::instance().find(filename,true);
    if (!mark) return;

    if (!(*mark)->is_bitmap())
    {
        MAPNIK_LOG_DEBUG(agg_renderer) << "agg_renderer: Only images (not '" << filename << "') are supported in the line_pattern_symbolizer";
        return;
    }

    boost::optional<image_ptr> pat = (*mark)->get_bitmap_data();
    if (!pat) return;

    ras_ptr->reset();

    agg::trans_affine tr;
    evaluate_transform(tr, feature, sym.get_transform());

    typedef boost::mpl::vector<clip_poly_tag,transform_tag,affine_transform_tag,smooth_tag> conv_types;
    vertex_converter<box2d<double>, grid_rasterizer, polygon_pattern_symbolizer,
                     CoordTransform, proj_transform, agg::trans_affine, conv_types>
        converter(query_extent_,*ras_ptr,sym,t_,prj_trans,tr,scale_factor_);

    if (prj_trans.equal() && sym.clip()) converter.set<clip_poly_tag>(); //optional clip (default: true)
    converter.set<transform_tag>(); //always transform
    converter.set<affine_transform_tag>();
    if (sym.smooth() > 0.0) converter.set<smooth_tag>(); // optional smooth converter


    for ( geometry_type & geom : feature.paths())
    {
        if (geom.size() > 2)
        {
            converter.apply(geom);
        }
    }
    typedef typename grid_renderer_base_type::pixfmt_type pixfmt_type;
    typedef typename grid_renderer_base_type::pixfmt_type::color_type color_type;
    typedef agg::renderer_scanline_bin_solid<grid_renderer_base_type> renderer_type;

    grid_rendering_buffer buf(pixmap_.raw_data(), width_, height_, width_);
    pixfmt_type pixf(buf);

    grid_renderer_base_type renb(pixf);
    renderer_type ren(renb);

    // render id
    ren.color(color_type(feature.id()));
    agg::scanline_bin sl;
    ras_ptr->filling_rule(agg::fill_even_odd);
    agg::render_scanlines(*ras_ptr, sl, ren);

    // add feature properties to grid cache
    pixmap_.add_feature(feature);
}
示例#2
0
 void operator () (polygon_pattern_symbolizer const& sym)
 {
     path_expression_ptr const& filename_expr = sym.get_filename();
     if (filename_expr)
     {
         path_processor_type::collect_attributes(*filename_expr,names_);
     }
     collect_transform(sym.get_image_transform());
     collect_transform(sym.get_transform());
 }
void agg_renderer<T>::process(polygon_pattern_symbolizer const& sym,
                              mapnik::feature_ptr const& feature,
                              proj_transform const& prj_trans)
{
    typedef agg::conv_clip_polygon<geometry_type> clipped_geometry_type;
    typedef coord_transform2<CoordTransform,clipped_geometry_type> path_type;
    typedef agg::renderer_base<agg::pixfmt_rgba32_plain> ren_base;
    typedef agg::wrap_mode_repeat wrap_x_type;
    typedef agg::wrap_mode_repeat wrap_y_type;
    typedef agg::pixfmt_alpha_blend_rgba<agg::blender_rgba32_plain,
        agg::row_accessor<agg::int8u>, agg::pixel32_type> rendering_buffer;
    typedef agg::image_accessor_wrap<rendering_buffer,
        wrap_x_type,
        wrap_y_type> img_source_type;

    typedef agg::span_pattern_rgba<img_source_type> span_gen_type;

    typedef agg::renderer_scanline_aa<ren_base,
        agg::span_allocator<agg::rgba8>,
        span_gen_type> renderer_type;


    agg::rendering_buffer buf(pixmap_.raw_data(),width_,height_, width_ * 4);
    agg::pixfmt_rgba32_plain pixf(buf);
    ren_base renb(pixf);

    agg::scanline_u8 sl;
    ras_ptr->reset();
    set_gamma_method(sym,ras_ptr);

    std::string filename = path_processor_type::evaluate( *sym.get_filename(), *feature);
    boost::optional<mapnik::marker_ptr> marker;
    if ( !filename.empty() )
    {
        marker = marker_cache::instance()->find(filename, true);
    }
    else
    {
        std::clog << "### Warning: file not found: " << filename << "\n";
    }

    if (!marker) return;

    if (!(*marker)->is_bitmap())
    {
        std::clog << "### Warning only images (not '" << filename << "') are supported in the polygon_pattern_symbolizer\n";
        return;
    }


    boost::optional<image_ptr> pat = (*marker)->get_bitmap_data();

    if (!pat) return;

    unsigned w=(*pat)->width();
    unsigned h=(*pat)->height();
    agg::row_accessor<agg::int8u> pattern_rbuf((agg::int8u*)(*pat)->getBytes(),w,h,w*4);
    agg::span_allocator<agg::rgba8> sa;
    agg::pixfmt_alpha_blend_rgba<agg::blender_rgba32_plain,
        agg::row_accessor<agg::int8u>, agg::pixel32_type> pixf_pattern(pattern_rbuf);
    img_source_type img_src(pixf_pattern);

    unsigned num_geometries = feature->num_geometries();

    pattern_alignment_e align = sym.get_alignment();
    unsigned offset_x=0;
    unsigned offset_y=0;

    if (align == LOCAL_ALIGNMENT)
    {
        double x0=0,y0=0;
        if (num_geometries>0) // FIXME: hmm...?
        {
            clipped_geometry_type clipped(feature->get_geometry(0));
            clipped.clip_box(query_extent_.minx(),query_extent_.miny(),query_extent_.maxx(),query_extent_.maxy());
            path_type path(t_,clipped,prj_trans);
            path.vertex(&x0,&y0);
        }
        offset_x = unsigned(width_-x0);
        offset_y = unsigned(height_-y0);
    }

    span_gen_type sg(img_src, offset_x, offset_y);
    renderer_type rp(renb,sa, sg);
    //metawriter_with_properties writer = sym.get_metawriter();
    for (unsigned i=0;i<num_geometries;++i)
    {
        geometry_type & geom = feature->get_geometry(i);
        if (geom.num_points() > 2)
        {
            clipped_geometry_type clipped(geom);
            clipped.clip_box(query_extent_.minx(),query_extent_.miny(),query_extent_.maxx(),query_extent_.maxy());
            path_type path(t_,clipped,prj_trans);
            ras_ptr->add_path(path);
            //if (writer.first) writer.first->add_polygon(path, *feature, t_, writer.second);
        }
    }
    agg::render_scanlines(*ras_ptr, sl, rp);
}
 static boost::python::tuple
 getinitargs(const polygon_pattern_symbolizer& p)
 {
     std::string filename = path_processor_type::to_string(*p.get_filename());
     return boost::python::make_tuple(filename,guess_type(filename));
 }
void agg_renderer<T>::process(polygon_pattern_symbolizer const& sym,
                              Feature const& feature,
                              proj_transform const& prj_trans)
{
    typedef coord_transform2<CoordTransform,geometry_type> path_type;
    typedef agg::renderer_base<agg::pixfmt_rgba32_plain> ren_base;
    typedef agg::wrap_mode_repeat wrap_x_type;
    typedef agg::wrap_mode_repeat wrap_y_type;
    typedef agg::pixfmt_alpha_blend_rgba<agg::blender_rgba32_plain,
        agg::row_accessor<agg::int8u>, agg::pixel32_type> rendering_buffer;
    typedef agg::image_accessor_wrap<rendering_buffer,
        wrap_x_type,
        wrap_y_type> img_source_type;

    typedef agg::span_pattern_rgba<img_source_type> span_gen_type;

    typedef agg::renderer_scanline_aa<ren_base,
        agg::span_allocator<agg::rgba8>,
        span_gen_type> renderer_type;


    agg::rendering_buffer buf(pixmap_.raw_data(),width_,height_, width_ * 4);
    agg::pixfmt_rgba32_plain pixf(buf);
    ren_base renb(pixf);
    
    agg::scanline_u8 sl;
    ras_ptr->reset();
    switch (sym.get_gamma_method())
    {
        case GAMMA_POWER:
            ras_ptr->gamma(agg::gamma_power(sym.get_gamma()));
            break;
        case GAMMA_LINEAR:
            ras_ptr->gamma(agg::gamma_linear(0.0, sym.get_gamma()));
            break;
        case GAMMA_NONE:
            ras_ptr->gamma(agg::gamma_none());
            break;
        case GAMMA_THRESHOLD:
            ras_ptr->gamma(agg::gamma_threshold(sym.get_gamma()));
            break;
        case GAMMA_MULTIPLY:
            ras_ptr->gamma(agg::gamma_multiply(sym.get_gamma()));
            break;
        default:
            ras_ptr->gamma(agg::gamma_power(sym.get_gamma()));
    }

    std::string filename = path_processor_type::evaluate( *sym.get_filename(), feature);
    boost::optional<mapnik::marker_ptr> marker;
    if ( !filename.empty() )
    {
        marker = marker_cache::instance()->find(filename, true);
    }
    else
    {
        std::clog << "### Warning: file not found: " << filename << "\n";
    }

    if (!marker || !(*marker)->is_bitmap()) return;
    

    boost::optional<image_ptr> pat = (*marker)->get_bitmap_data();

    if (!pat) return;
    
    unsigned w=(*pat)->width();
    unsigned h=(*pat)->height();
    agg::row_accessor<agg::int8u> pattern_rbuf((agg::int8u*)(*pat)->getBytes(),w,h,w*4);
    agg::span_allocator<agg::rgba8> sa;
    agg::pixfmt_alpha_blend_rgba<agg::blender_rgba32_plain,
        agg::row_accessor<agg::int8u>, agg::pixel32_type> pixf_pattern(pattern_rbuf);
    img_source_type img_src(pixf_pattern);
    
    unsigned num_geometries = feature.num_geometries();

    pattern_alignment_e align = sym.get_alignment();
    unsigned offset_x=0;
    unsigned offset_y=0;
    
    if (align == LOCAL_ALIGNMENT)
    {
        double x0=0,y0=0;
        if (num_geometries>0)
        {
            path_type path(t_,feature.get_geometry(0),prj_trans);
            path.vertex(&x0,&y0);
        }
        offset_x = unsigned(width_-x0);
        offset_y = unsigned(height_-y0);    
    }
    
    span_gen_type sg(img_src, offset_x, offset_y);
    renderer_type rp(renb,sa, sg);
    metawriter_with_properties writer = sym.get_metawriter();
    for (unsigned i=0;i<num_geometries;++i)
    {
        geometry_type const& geom = feature.get_geometry(i);
        if (geom.num_points() > 2)
        {
            path_type path(t_,geom,prj_trans);
            ras_ptr->add_path(path);
            if (writer.first) writer.first->add_polygon(path, feature, t_, writer.second);
        }
    }
    agg::render_scanlines(*ras_ptr, sl, rp);
}