+ shield_symbolizer: support SVG images rendering
TODO: This is a first take, proper refactoring required!!!
This commit is contained in:
Artem Pavlenko
parent
5e43fefdba
commit
bc5730f006
1 changed files with 258 additions and 108 deletions
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@ -42,6 +42,9 @@ void agg_renderer<T>::process(shield_symbolizer const& sym,
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proj_transform const& prj_trans)
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proj_transform const& prj_trans)
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{
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{
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typedef coord_transform2<CoordTransform,geometry2d> path_type;
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typedef coord_transform2<CoordTransform,geometry2d> path_type;
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typedef agg::pixfmt_rgba32 pixfmt;
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typedef agg::renderer_base<pixfmt> renderer_base;
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typedef agg::renderer_scanline_aa_solid<renderer_base> renderer_solid;
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UnicodeString text;
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UnicodeString text;
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if( sym.get_no_text() )
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if( sym.get_no_text() )
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@ -64,7 +67,153 @@ void agg_renderer<T>::process(shield_symbolizer const& sym,
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}
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}
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std::string filename = path_processor_type::evaluate( *sym.get_filename(), feature);
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std::string filename = path_processor_type::evaluate( *sym.get_filename(), feature);
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boost::optional<mapnik::image_ptr> data = mapnik::image_cache::instance()->find(filename,true);
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if (is_svg(filename)) //SVG Label
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{
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boost::optional<path_ptr> marker = marker_cache::instance()->find(filename, true);
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ras_ptr->reset();
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ras_ptr->gamma(agg::gamma_linear());
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agg::scanline_u8 sl;
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agg::rendering_buffer buf(pixmap_.raw_data(), width_, height_, width_ * 4);
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pixfmt pixf(buf);
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renderer_base renb(pixf);
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renderer_solid ren(renb);
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if (text.length() > 0 && marker && *marker)
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{
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face_set_ptr faces;
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double x1, y1, x2, y2;
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(*marker)->bounding_rect(&x1, &y1, &x2, &y2);
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// TODO : apply transform
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int w = int(x2 - x1);
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int h = int(y2 - y1);
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if (sym.get_fontset().size() > 0)
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{
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faces = font_manager_.get_face_set(sym.get_fontset());
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}
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else
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{
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faces = font_manager_.get_face_set(sym.get_face_name());
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}
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if (faces->size() > 0)
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{
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text_renderer<T> text_ren(pixmap_, faces);
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text_ren.set_pixel_size(sym.get_text_size());
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text_ren.set_fill(sym.get_fill());
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text_ren.set_halo_fill(sym.get_halo_fill());
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text_ren.set_halo_radius(sym.get_halo_radius());
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placement_finder<label_collision_detector4> finder(detector_);
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string_info info(text);
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faces->get_string_info(info);
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unsigned num_geom = feature.num_geometries();
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for (unsigned i=0;i<num_geom;++i)
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{
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geometry2d const& geom = feature.get_geometry(i);
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if (geom.num_points() > 0 )
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{
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path_type path(t_,geom,prj_trans);
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label_placement_enum how_placed = sym.get_label_placement();
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if (how_placed == POINT_PLACEMENT || how_placed == VERTEX_PLACEMENT)
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{
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// for every vertex, try and place a shield/text
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geom.rewind(0);
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for( unsigned jj = 0; jj < geom.num_points(); jj++ )
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{
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double label_x;
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double label_y;
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double z=0.0;
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placement text_placement(info, sym, w, h, false);
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text_placement.avoid_edges = sym.get_avoid_edges();
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text_placement.allow_overlap = sym.get_allow_overlap();
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if( how_placed == VERTEX_PLACEMENT )
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geom.vertex(&label_x,&label_y); // by vertex
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else
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geom.label_position(&label_x, &label_y); // by middle of line or by point
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prj_trans.backward(label_x,label_y, z);
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t_.forward(&label_x,&label_y);
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finder.find_point_placement( text_placement,label_x,label_y,0.0,sym.get_vertical_alignment(),sym.get_line_spacing(),
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sym.get_character_spacing(),sym.get_horizontal_alignment(),sym.get_justify_alignment() );
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// check to see if image overlaps anything too, there is only ever 1 placement found for points and verticies
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if( text_placement.placements.size() > 0)
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{
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double x = text_placement.placements[0].starting_x;
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double y = text_placement.placements[0].starting_y;
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int px;
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int py;
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box2d<double> label_ext;
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if( !sym.get_unlock_image() )
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{ // center image at text center position
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// remove displacement from image label
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position pos = sym.get_displacement();
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double lx = x - boost::get<0>(pos);
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double ly = y - boost::get<1>(pos);
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px=int(floor(lx - (0.5 * w))) ;
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py=int(floor(ly - (0.5 * h))) ;
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label_ext.init( floor(lx - 0.5 * w), floor(ly - 0.5 * h),
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ceil (lx + 0.5 * w), ceil (ly + 0.5 * h) );
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}
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else
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{ // center image at reference location
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px=int(floor(label_x - 0.5 * w));
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py=int(floor(label_y - 0.5 * h));
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label_ext.init( floor(label_x - 0.5 * w), floor(label_y - 0.5 * h),
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ceil (label_x + 0.5 * w), ceil (label_y + 0.5 * h));
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}
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if ( sym.get_allow_overlap() || detector_.has_placement(label_ext) )
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{
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agg::trans_affine matrix = agg::trans_affine_translation(px, py);
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(*marker)->render(*ras_ptr, sl, ren, matrix, renb.clip_box(), sym.get_opacity());
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box2d<double> dim = text_ren.prepare_glyphs(&text_placement.placements[0]);
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text_ren.render(x,y);
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detector_.insert(label_ext);
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finder.update_detector(text_placement);
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}
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}
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}
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}
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else if (geom.num_points() > 1 && sym.get_label_placement() == LINE_PLACEMENT)
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{
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placement text_placement(info, sym, w, h, true);
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text_placement.avoid_edges = sym.get_avoid_edges();
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finder.find_point_placements<path_type>(text_placement,path);
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for (unsigned int ii = 0; ii < text_placement.placements.size(); ++ ii)
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{
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double x = text_placement.placements[ii].starting_x;
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double y = text_placement.placements[ii].starting_y;
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int px=int(x - (w/2));
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int py=int(y - (h/2));
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agg::trans_affine matrix = agg::trans_affine_translation(px, py);
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(*marker)->render(*ras_ptr, sl, ren, matrix, renb.clip_box(), sym.get_opacity());
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box2d<double> dim = text_ren.prepare_glyphs(&text_placement.placements[ii]);
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text_ren.render(x,y);
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}
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finder.update_detector(text_placement);
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}
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}
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}
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}
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}
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}
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else
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{
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boost::optional<image_ptr> data = image_cache::instance()->find(filename,true);
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if (text.length() > 0 && data)
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if (text.length() > 0 && data)
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{
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{
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@ -194,6 +343,7 @@ void agg_renderer<T>::process(shield_symbolizer const& sym,
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}
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}
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}
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}
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}
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}
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}
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}
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}
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