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211 lines
8.7 KiB
C++
211 lines
8.7 KiB
C++
/*****************************************************************************
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*
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* This file is part of Mapnik (c++ mapping toolkit)
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*
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* Copyright (C) 2014 Artem Pavlenko
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*****************************************************************************/
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// mapnik
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#include <mapnik/agg_helpers.hpp>
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#include <mapnik/agg_renderer.hpp>
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#include <mapnik/agg_rasterizer.hpp>
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#include <mapnik/debug.hpp>
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#include <mapnik/feature.hpp>
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#include <mapnik/geom_util.hpp>
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#include <mapnik/marker_helpers.hpp>
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#include <mapnik/marker.hpp>
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#include <mapnik/marker_cache.hpp>
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#include <mapnik/agg_render_marker.hpp>
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#include <mapnik/svg/svg_renderer_agg.hpp>
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#include <mapnik/svg/svg_storage.hpp>
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#include <mapnik/svg/svg_path_adapter.hpp>
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#include <mapnik/svg/svg_path_attributes.hpp>
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#include <mapnik/symbolizer.hpp>
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#include <mapnik/parse_path.hpp>
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#include <mapnik/renderer_common/process_markers_symbolizer.hpp>
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#include <mapnik/renderer_common/clipping_extent.hpp>
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// agg
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#include "agg_basics.h"
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#include "agg_renderer_base.h"
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#include "agg_renderer_scanline.h"
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#include "agg_rendering_buffer.h"
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#include "agg_pixfmt_rgba.h"
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#include "agg_color_rgba.h"
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#include "agg_rasterizer_scanline_aa.h"
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#include "agg_scanline_u.h"
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#include "agg_path_storage.h"
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#include "agg_conv_clip_polyline.h"
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#include "agg_conv_transform.h"
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// boost
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#include <boost/optional.hpp>
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namespace mapnik {
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namespace detail {
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template <typename SvgRenderer, typename Detector, typename RendererContext>
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struct vector_markers_rasterizer_dispatch : public vector_markers_dispatch<Detector>
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{
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using renderer_base = typename SvgRenderer::renderer_base;
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using vertex_source_type = typename SvgRenderer::vertex_source_type;
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using attribute_source_type = typename SvgRenderer::attribute_source_type;
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using pixfmt_type = typename renderer_base::pixfmt_type;
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using BufferType = typename std::tuple_element<0,RendererContext>::type;
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using RasterizerType = typename std::tuple_element<1,RendererContext>::type;
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vector_markers_rasterizer_dispatch(svg_path_ptr const& src,
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vertex_source_type & path,
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svg_attribute_type const& attrs,
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agg::trans_affine const& marker_trans,
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symbolizer_base const& sym,
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Detector & detector,
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double scale_factor,
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feature_impl & feature,
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attributes const& vars,
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bool snap_to_pixels,
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RendererContext const& renderer_context)
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: vector_markers_dispatch<Detector>(src, marker_trans, sym, detector, scale_factor, feature, vars),
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buf_(std::get<0>(renderer_context)),
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pixf_(buf_),
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renb_(pixf_),
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svg_renderer_(path, attrs),
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ras_(std::get<1>(renderer_context)),
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snap_to_pixels_(snap_to_pixels)
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{
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pixf_.comp_op(static_cast<agg::comp_op_e>(get<composite_mode_e, keys::comp_op>(sym, feature, vars)));
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}
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~vector_markers_rasterizer_dispatch() {}
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void render_marker(agg::trans_affine const& marker_tr, double opacity)
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{
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render_vector_marker(svg_renderer_, ras_, renb_, this->src_->bounding_box(),
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marker_tr, opacity, snap_to_pixels_);
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}
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private:
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BufferType & buf_;
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pixfmt_type pixf_;
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renderer_base renb_;
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SvgRenderer svg_renderer_;
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RasterizerType & ras_;
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bool snap_to_pixels_;
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};
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template <typename Detector, typename RendererContext>
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struct raster_markers_rasterizer_dispatch : public raster_markers_dispatch<Detector>
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{
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using BufferType = typename std::remove_reference<typename std::tuple_element<0,RendererContext>::type>::type;
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using RasterizerType = typename std::tuple_element<1,RendererContext>::type;
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using color_type = agg::rgba8;
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using order_type = agg::order_rgba;
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using pixel_type = agg::pixel32_type;
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using blender_type = agg::comp_op_adaptor_rgba_pre<color_type, order_type>; // comp blender
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using pixfmt_comp_type = agg::pixfmt_custom_blend_rgba<blender_type, BufferType>;
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using renderer_base = agg::renderer_base<pixfmt_comp_type>;
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raster_markers_rasterizer_dispatch(image_rgba8 const& src,
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agg::trans_affine const& marker_trans,
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symbolizer_base const& sym,
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Detector & detector,
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double scale_factor,
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feature_impl & feature,
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attributes const& vars,
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RendererContext const& renderer_context,
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bool snap_to_pixels = false)
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: raster_markers_dispatch<Detector>(src, marker_trans, sym, detector, scale_factor, feature, vars),
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buf_(std::get<0>(renderer_context)),
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pixf_(buf_),
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renb_(pixf_),
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ras_(std::get<1>(renderer_context)),
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snap_to_pixels_(snap_to_pixels)
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{
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pixf_.comp_op(static_cast<agg::comp_op_e>(get<composite_mode_e, keys::comp_op>(sym, feature, vars)));
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}
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~raster_markers_rasterizer_dispatch() {}
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void render_marker(agg::trans_affine const& marker_tr, double opacity)
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{
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// In the long term this should be a visitor pattern based on the type of render this->src_ provided that converts
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// the destination pixel type required.
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render_raster_marker(renb_, ras_, this->src_, marker_tr, opacity, this->scale_factor_, snap_to_pixels_);
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}
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private:
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BufferType & buf_;
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pixfmt_comp_type pixf_;
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renderer_base renb_;
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RasterizerType & ras_;
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bool snap_to_pixels_;
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};
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}
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template <typename T0, typename T1>
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void agg_renderer<T0,T1>::process(markers_symbolizer const& sym,
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feature_impl & feature,
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proj_transform const& prj_trans)
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{
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using namespace mapnik::svg;
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using color_type = agg::rgba8;
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using order_type = agg::order_rgba;
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using blender_type = agg::comp_op_adaptor_rgba_pre<color_type, order_type>; // comp blender
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using buf_type = agg::rendering_buffer;
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using pixfmt_comp_type = agg::pixfmt_custom_blend_rgba<blender_type, buf_type>;
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using renderer_base = agg::renderer_base<pixfmt_comp_type>;
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using renderer_type = agg::renderer_scanline_aa_solid<renderer_base>;
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using svg_attribute_type = agg::pod_bvector<path_attributes>;
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using svg_renderer_type = svg_renderer_agg<svg_path_adapter,
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svg_attribute_type,
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renderer_type,
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pixfmt_comp_type>;
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ras_ptr->reset();
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double gamma = get<value_double, keys::gamma>(sym, feature, common_.vars_);
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gamma_method_enum gamma_method = get<gamma_method_enum, keys::gamma_method>(sym, feature, common_.vars_);
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if (gamma != gamma_ || gamma_method != gamma_method_)
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{
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set_gamma_method(ras_ptr, gamma, gamma_method);
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gamma_method_ = gamma_method;
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gamma_ = gamma;
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}
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buf_type render_buffer(current_buffer_->bytes(), current_buffer_->width(), current_buffer_->height(), current_buffer_->row_size());
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box2d<double> clip_box = clipping_extent(common_);
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auto renderer_context = std::tie(render_buffer,*ras_ptr,pixmap_);
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using context_type = decltype(renderer_context);
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using vector_dispatch_type = detail::vector_markers_rasterizer_dispatch<svg_renderer_type, detector_type, context_type>;
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using raster_dispatch_type = detail::raster_markers_rasterizer_dispatch<detector_type, context_type>;
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render_markers_symbolizer<vector_dispatch_type, raster_dispatch_type>(
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sym, feature, prj_trans, common_, clip_box, renderer_context);
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}
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template void agg_renderer<image_rgba8>::process(markers_symbolizer const&,
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mapnik::feature_impl &,
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proj_transform const&);
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}
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