static boost::python::tuple getstate(markers_symbolizer const& p) { return boost::python::make_tuple(p.get_allow_overlap(), p.get_ignore_placement());//,p.get_opacity()); }
void grid_renderer<T>::process(markers_symbolizer const& sym, mapnik::feature_ptr const& feature, proj_transform const& prj_trans) { typedef coord_transform2<CoordTransform,geometry_type> path_type; typedef agg::renderer_base<mapnik::pixfmt_gray16> ren_base; typedef agg::renderer_scanline_bin_solid<ren_base> renderer; agg::scanline_bin sl; grid_rendering_buffer buf(pixmap_.raw_data(), width_, height_, width_); mapnik::pixfmt_gray16 pixf(buf); ren_base renb(pixf); renderer ren(renb); ras_ptr->reset(); agg::trans_affine tr; boost::array<double,6> const& m = sym.get_transform(); tr.load_from(&m[0]); tr = agg::trans_affine_scaling(scale_factor_*(1.0/pixmap_.get_resolution())) * tr; std::string filename = path_processor_type::evaluate(*sym.get_filename(), *feature); marker_placement_e placement_method = sym.get_marker_placement(); marker_type_e marker_type = sym.get_marker_type(); if (!filename.empty()) { boost::optional<marker_ptr> mark = mapnik::marker_cache::instance()->find(filename, true); if (mark && *mark && (*mark)->is_vector()) { boost::optional<path_ptr> marker = (*mark)->get_vector_data(); box2d<double> const& bbox = (*marker)->bounding_box(); double x1 = bbox.minx(); double y1 = bbox.miny(); double x2 = bbox.maxx(); double y2 = bbox.maxy(); agg::trans_affine recenter = agg::trans_affine_translation(-0.5*(x1+x2),-0.5*(y1+y2)); tr.transform(&x1,&y1); tr.transform(&x2,&y2); box2d<double> extent(x1,y1,x2,y2); using namespace mapnik::svg; vertex_stl_adapter<svg_path_storage> stl_storage((*marker)->source()); svg_path_adapter svg_path(stl_storage); svg_renderer<svg_path_adapter, agg::pod_bvector<path_attributes>, renderer, mapnik::pixfmt_gray16 > svg_renderer(svg_path,(*marker)->attributes()); bool placed = false; for (unsigned i=0; i<feature->num_geometries(); ++i) { geometry_type & geom = feature->get_geometry(i); if (geom.num_points() <= 1) { std::clog << "### Warning svg markers not supported yet for points within markers_symbolizer\n"; continue; } path_type path(t_,geom,prj_trans); markers_placement<path_type, label_collision_detector4> placement(path, extent, detector_, sym.get_spacing() * scale_factor_, sym.get_max_error(), sym.get_allow_overlap()); double x, y, angle; while (placement.get_point(&x, &y, &angle)) { placed = true; agg::trans_affine matrix = recenter * tr *agg::trans_affine_rotation(angle) * agg::trans_affine_translation(x, y); svg_renderer.render_id(*ras_ptr, sl, renb, feature->id(), matrix, sym.get_opacity(),bbox); } } if (placed) pixmap_.add_feature(feature); } } else { stroke const& stroke_ = sym.get_stroke(); double strk_width = stroke_.get_width(); double w; double h; unsigned int res = pixmap_.get_resolution(); if (res != 1) { // clamp to at least 4 px otherwise interactive pixels can be too small double min = static_cast<double>(4/pixmap_.get_resolution()); w = std::max(sym.get_width()/res,min); h = std::max(sym.get_height()/res,min); } else { w = sym.get_width()/res; h = sym.get_height()/res; } arrow arrow_; box2d<double> extent; double dx = w + (2*strk_width); double dy = h + (2*strk_width); if (marker_type == ARROW) { extent = arrow_.extent(); double x1 = extent.minx(); double y1 = extent.miny(); double x2 = extent.maxx(); double y2 = extent.maxy(); tr.transform(&x1,&y1); tr.transform(&x2,&y2); extent.init(x1,y1,x2,y2); } else { double x1 = -1 *(dx); double y1 = -1 *(dy); double x2 = dx; double y2 = dy; tr.transform(&x1,&y1); tr.transform(&x2,&y2); extent.init(x1,y1,x2,y2); } double x; double y; double z=0; for (unsigned i=0; i<feature->num_geometries(); ++i) { geometry_type & geom = feature->get_geometry(i); if (placement_method == MARKER_POINT_PLACEMENT || geom.num_points() <= 1) { geom.label_position(&x,&y); prj_trans.backward(x,y,z); t_.forward(&x,&y); int px = int(floor(x - 0.5 * dx)); int py = int(floor(y - 0.5 * dy)); box2d<double> label_ext (px, py, px + dx +1, py + dy +1); if (sym.get_allow_overlap() || detector_.has_placement(label_ext)) { agg::ellipse c(x, y, w, h); agg::path_storage marker; marker.concat_path(c); ras_ptr->add_path(marker); // outline if (strk_width) { agg::conv_stroke<agg::path_storage> outline(marker); outline.generator().width(strk_width * scale_factor_); ras_ptr->add_path(outline); } detector_.insert(label_ext); } } else { agg::path_storage marker; if (marker_type == ARROW) marker.concat_path(arrow_); path_type path(t_,geom,prj_trans); markers_placement<path_type, label_collision_detector4> placement(path, extent, detector_, sym.get_spacing() * scale_factor_, sym.get_max_error(), sym.get_allow_overlap()); double x_t, y_t, angle; while (placement.get_point(&x_t, &y_t, &angle)) { agg::trans_affine matrix; if (marker_type == ELLIPSE) { // todo proper bbox - this is buggy agg::ellipse c(x_t, y_t, w, h); marker.concat_path(c); agg::trans_affine matrix; matrix *= agg::trans_affine_translation(-x_t,-y_t); matrix *= agg::trans_affine_rotation(angle); matrix *= agg::trans_affine_translation(x_t,y_t); marker.transform(matrix); } else { matrix = tr * agg::trans_affine_rotation(angle) * agg::trans_affine_translation(x_t, y_t); } agg::conv_transform<agg::path_storage, agg::trans_affine> trans(marker, matrix); // fill ras_ptr->add_path(trans); // outline if (strk_width) { agg::conv_stroke<agg::conv_transform<agg::path_storage, agg::trans_affine> > outline(trans); outline.generator().width(strk_width * scale_factor_); ras_ptr->add_path(outline); } } } } ren.color(mapnik::gray16(feature->id())); agg::render_scanlines(*ras_ptr, sl, ren); pixmap_.add_feature(feature); } }