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153 lines
6.2 KiB
C++
153 lines
6.2 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) 2015 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/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/renderer_common/clipping_extent.hpp>
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#include <mapnik/renderer_common/render_markers_symbolizer.hpp>
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#pragma GCC diagnostic push
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#include <mapnik/warning_ignore_agg.hpp>
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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_transform.h"
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#pragma GCC diagnostic pop
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namespace mapnik {
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namespace detail {
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template <typename SvgRenderer, typename BufferType, typename RasterizerType>
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struct agg_markers_renderer_context : markers_renderer_context
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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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agg_markers_renderer_context(symbolizer_base const& sym,
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feature_impl const& feature,
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attributes const& vars,
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BufferType & buf,
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RasterizerType & ras)
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: buf_(buf),
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pixf_(buf_),
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renb_(pixf_),
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ras_(ras)
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{
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auto comp_op = get<composite_mode_e, keys::comp_op>(sym, feature, vars);
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pixf_.comp_op(static_cast<agg::comp_op_e>(comp_op));
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}
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virtual void render_marker(svg_path_ptr const& src,
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svg_path_adapter & path,
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svg_attribute_type const& attrs,
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markers_dispatch_params const& params,
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agg::trans_affine const& marker_tr)
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{
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SvgRenderer svg_renderer(path, attrs);
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render_vector_marker(svg_renderer, ras_, renb_, src->bounding_box(),
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marker_tr, params.opacity, params.snap_to_pixels);
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}
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virtual void render_marker(image_rgba8 const& src,
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markers_dispatch_params const& params,
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agg::trans_affine const& marker_tr)
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{
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// In the long term this should be a visitor pattern based on the type of
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// render src provided that converts the destination pixel type required.
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render_raster_marker(renb_, ras_, src, marker_tr, params.opacity,
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params.scale_factor, params.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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RasterizerType & ras_;
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};
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} // namespace detail
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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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using context_type = detail::agg_markers_renderer_context<svg_renderer_type,
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buf_type,
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rasterizer>;
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context_type renderer_context(sym, feature, common_.vars_, render_buffer, *ras_ptr);
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render_markers_symbolizer(
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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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} // namespace mapnik
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