void agg_renderer<T>::process(line_symbolizer const& sym, mapnik::feature_impl & feature, proj_transform const& prj_trans) { stroke const& stroke_ = sym.get_stroke(); color const& col = stroke_.get_color(); unsigned r=col.red(); unsigned g=col.green(); unsigned b=col.blue(); unsigned a=col.alpha(); ras_ptr->reset(); if (stroke_.get_gamma() != gamma_ || stroke_.get_gamma_method() != gamma_method_) { set_gamma_method(stroke_, ras_ptr); gamma_method_ = stroke_.get_gamma_method(); gamma_ = stroke_.get_gamma(); } agg::rendering_buffer buf(current_buffer_->raw_data(),current_buffer_->width(),current_buffer_->height(), current_buffer_->width() * 4); typedef agg::rgba8 color_type; typedef agg::order_rgba order_type; typedef agg::comp_op_adaptor_rgba_pre<color_type, order_type> blender_type; // comp blender typedef agg::pixfmt_custom_blend_rgba<blender_type, agg::rendering_buffer> pixfmt_comp_type; typedef agg::renderer_base<pixfmt_comp_type> renderer_base; typedef boost::mpl::vector<clip_line_tag, transform_tag, offset_transform_tag, affine_transform_tag, simplify_tag, smooth_tag, dash_tag, stroke_tag> conv_types; pixfmt_comp_type pixf(buf); pixf.comp_op(static_cast<agg::comp_op_e>(sym.comp_op())); renderer_base renb(pixf); agg::trans_affine tr; evaluate_transform(tr, feature, sym.get_transform(), scale_factor_); box2d<double> clip_box = clipping_extent(); if (sym.clip()) { double padding = (double)(query_extent_.width()/pixmap_.width()); double half_stroke = stroke_.get_width()/2.0; if (half_stroke > 1) padding *= half_stroke; if (std::fabs(sym.offset()) > 0) padding *= std::fabs(sym.offset()) * 1.2; padding *= scale_factor_; clip_box.pad(padding); // debugging //box2d<double> inverse = query_extent_; //inverse.pad(-padding); //draw_geo_extent(inverse,mapnik::color("red")); } if (sym.get_rasterizer() == RASTERIZER_FAST) { typedef agg::renderer_outline_aa<renderer_base> renderer_type; typedef agg::rasterizer_outline_aa<renderer_type> rasterizer_type; agg::line_profile_aa profile(stroke_.get_width() * scale_factor_, agg::gamma_power(stroke_.get_gamma())); renderer_type ren(renb, profile); ren.color(agg::rgba8_pre(r, g, b, int(a*stroke_.get_opacity()))); rasterizer_type ras(ren); set_join_caps_aa(stroke_,ras); vertex_converter<box2d<double>, rasterizer_type, line_symbolizer, CoordTransform, proj_transform, agg::trans_affine, conv_types> converter(clip_box,ras,sym,t_,prj_trans,tr,scale_factor_); if (sym.clip()) converter.set<clip_line_tag>(); // optional clip (default: true) converter.set<transform_tag>(); // always transform if (std::fabs(sym.offset()) > 0.0) converter.set<offset_transform_tag>(); // parallel offset converter.set<affine_transform_tag>(); // optional affine transform if (sym.simplify_tolerance() > 0.0) converter.set<simplify_tag>(); // optional simplify converter if (sym.smooth() > 0.0) converter.set<smooth_tag>(); // optional smooth converter for (geometry_type & geom : feature.paths()) { if (geom.size() > 1) { converter.apply(geom); } } } else { vertex_converter<box2d<double>, rasterizer, line_symbolizer, CoordTransform, proj_transform, agg::trans_affine, conv_types> converter(clip_box,*ras_ptr,sym,t_,prj_trans,tr,scale_factor_); if (sym.clip()) converter.set<clip_line_tag>(); // optional clip (default: true) converter.set<transform_tag>(); // always transform if (std::fabs(sym.offset()) > 0.0) converter.set<offset_transform_tag>(); // parallel offset converter.set<affine_transform_tag>(); // optional affine transform if (sym.simplify_tolerance() > 0.0) converter.set<simplify_tag>(); // optional simplify converter if (sym.smooth() > 0.0) converter.set<smooth_tag>(); // optional smooth converter if (stroke_.has_dash()) converter.set<dash_tag>(); converter.set<stroke_tag>(); //always stroke for (geometry_type & geom : feature.paths()) { if (geom.size() > 1) { converter.apply(geom); } } typedef agg::renderer_scanline_aa_solid<renderer_base> renderer_type; renderer_type ren(renb); ren.color(agg::rgba8_pre(r, g, b, int(a * stroke_.get_opacity()))); agg::scanline_u8 sl; ras_ptr->filling_rule(agg::fill_non_zero); agg::render_scanlines(*ras_ptr, sl, ren); } }
void grid_renderer<T>::process(line_symbolizer const& sym, mapnik::feature_impl & feature, proj_transform const& prj_trans) { 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; typedef boost::mpl::vector<clip_line_tag, transform_tag, offset_transform_tag, affine_transform_tag, simplify_tag, smooth_tag, dash_tag, stroke_tag> conv_types; agg::scanline_bin sl; grid_rendering_buffer buf(pixmap_.raw_data(), width_, height_, width_); pixfmt_type pixf(buf); grid_renderer_base_type renb(pixf); renderer_type ren(renb); ras_ptr->reset(); stroke const& stroke_ = sym.get_stroke(); agg::trans_affine tr; evaluate_transform(tr, feature, sym.get_transform(), scale_factor_); box2d<double> clipping_extent = query_extent_; if (sym.clip()) { double padding = (double)(query_extent_.width()/pixmap_.width()); double half_stroke = stroke_.get_width()/2.0; if (half_stroke > 1) padding *= half_stroke; if (std::fabs(sym.offset()) > 0) padding *= std::fabs(sym.offset()) * 1.2; padding *= scale_factor_; clipping_extent.pad(padding); } vertex_converter<box2d<double>, grid_rasterizer, line_symbolizer, CoordTransform, proj_transform, agg::trans_affine, conv_types> converter(clipping_extent,*ras_ptr,sym,t_,prj_trans,tr,scale_factor_); if (sym.clip()) converter.set<clip_line_tag>(); // optional clip (default: true) converter.set<transform_tag>(); // always transform if (std::fabs(sym.offset()) > 0.0) converter.set<offset_transform_tag>(); // parallel offset converter.set<affine_transform_tag>(); // optional affine transform if (sym.simplify_tolerance() > 0.0) converter.set<simplify_tag>(); // optional simplify converter if (sym.smooth() > 0.0) converter.set<smooth_tag>(); // optional smooth converter if (stroke_.has_dash()) converter.set<dash_tag>(); converter.set<stroke_tag>(); //always stroke for ( geometry_type & geom : feature.paths()) { if (geom.size() > 1) { converter.apply(geom); } } // render id ren.color(color_type(feature.id())); ras_ptr->filling_rule(agg::fill_non_zero); agg::render_scanlines(*ras_ptr, sl, ren); // add feature properties to grid cache pixmap_.add_feature(feature); }