1055 lines
34 KiB
C++
1055 lines
34 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) 2006 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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//$Id$
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// mapnik
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#include <mapnik/agg_renderer.hpp>
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#include <mapnik/image_util.hpp>
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#include <mapnik/image_cache.hpp>
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#include <mapnik/svg/marker_cache.hpp>
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#include <mapnik/unicode.hpp>
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#include <mapnik/placement_finder.hpp>
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#include <mapnik/markers_placement.hpp>
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#include <mapnik/arrow.hpp>
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#include <mapnik/config_error.hpp>
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#include <mapnik/font_set.hpp>
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#include <mapnik/path_expression_grammar.hpp>
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#include <mapnik/text_path.hpp>
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// agg
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#define AGG_RENDERING_BUFFER row_ptr_cache<int8u>
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#include "agg_rendering_buffer.h"
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#include "agg_pixfmt_rgba.h"
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#include "agg_rasterizer_scanline_aa.h"
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#include "agg_basics.h"
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#include "agg_scanline_p.h"
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#include "agg_scanline_u.h"
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#include "agg_renderer_scanline.h"
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#include "agg_path_storage.h"
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#include "agg_span_allocator.h"
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#include "agg_span_pattern_rgba.h"
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#include "agg_image_accessors.h"
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#include "agg_conv_stroke.h"
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#include "agg_conv_dash.h"
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#include "agg_conv_contour.h"
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#include "agg_conv_clip_polyline.h"
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#include "agg_vcgen_stroke.h"
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#include "agg_conv_adaptor_vcgen.h"
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#include "agg_conv_smooth_poly1.h"
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#include "agg_conv_marker.h"
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#include "agg_vcgen_markers_term.h"
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#include "agg_renderer_outline_aa.h"
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#include "agg_rasterizer_outline_aa.h"
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#include "agg_rasterizer_outline.h"
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#include "agg_renderer_outline_image.h"
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#include "agg_span_allocator.h"
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#include "agg_span_pattern_rgba.h"
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#include "agg_renderer_scanline.h"
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#include "agg_pattern_filters_rgba.h"
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#include "agg_renderer_outline_image.h"
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#include "agg_vpgen_clip_polyline.h"
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#include "agg_arrowhead.h"
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// boost
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#include <boost/utility.hpp>
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#include <boost/tuple/tuple.hpp>
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// stl
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#ifdef MAPNIK_DEBUG
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#include <iostream>
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#endif
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#include <cmath>
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namespace mapnik
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{
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class pattern_source : private boost::noncopyable
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{
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public:
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pattern_source(image_data_32 const& pattern)
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: pattern_(pattern) {}
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unsigned int width() const
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{
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return pattern_.width();
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}
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unsigned int height() const
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{
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return pattern_.height();
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}
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agg::rgba8 pixel(int x, int y) const
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{
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unsigned c = pattern_(x,y);
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return agg::rgba8(c & 0xff,
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(c >> 8) & 0xff,
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(c >> 16) & 0xff,
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(c >> 24) & 0xff);
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}
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private:
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image_data_32 const& pattern_;
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};
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struct rasterizer : agg::rasterizer_scanline_aa<>, boost::noncopyable {};
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template <typename T>
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agg_renderer<T>::agg_renderer(Map const& m, T & pixmap, unsigned offset_x, unsigned offset_y)
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: feature_style_processor<agg_renderer>(m),
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pixmap_(pixmap),
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width_(pixmap_.width()),
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height_(pixmap_.height()),
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t_(m.getWidth(),m.getHeight(),m.getCurrentExtent(),offset_x,offset_y),
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font_engine_(),
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font_manager_(font_engine_),
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detector_(box2d<double>(-m.buffer_size(), -m.buffer_size(), m.getWidth() + m.buffer_size() ,m.getHeight() + m.buffer_size())),
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ras_ptr(new rasterizer)
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{
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boost::optional<color> bg = m.background();
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if (bg) pixmap_.set_background(*bg);
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#ifdef MAPNIK_DEBUG
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std::clog << "scale=" << m.scale() << "\n";
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#endif
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}
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template <typename T>
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agg_renderer<T>::~agg_renderer() {}
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template <typename T>
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void agg_renderer<T>::start_map_processing(Map const& map)
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{
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#ifdef MAPNIK_DEBUG
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std::clog << "start map processing bbox="
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<< map.getCurrentExtent() << "\n";
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#endif
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ras_ptr->clip_box(0,0,width_,height_);
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}
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template <typename T>
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void agg_renderer<T>::end_map_processing(Map const& )
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{
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#ifdef MAPNIK_DEBUG
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std::clog << "end map processing\n";
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#endif
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}
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template <typename T>
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void agg_renderer<T>::start_layer_processing(layer const& lay)
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{
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#ifdef MAPNIK_DEBUG
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std::clog << "start layer processing : " << lay.name() << "\n";
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std::clog << "datasource = " << lay.datasource().get() << "\n";
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#endif
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if (lay.clear_label_cache())
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{
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detector_.clear();
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}
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}
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template <typename T>
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void agg_renderer<T>::end_layer_processing(layer const&)
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{
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#ifdef MAPNIK_DEBUG
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std::clog << "end layer processing\n";
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#endif
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}
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template <typename T>
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void agg_renderer<T>::process(polygon_symbolizer const& sym,
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Feature const& feature,
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proj_transform const& prj_trans)
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{
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typedef coord_transform2<CoordTransform,geometry2d> path_type;
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typedef agg::renderer_base<agg::pixfmt_rgba32_plain> ren_base;
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typedef agg::renderer_scanline_aa_solid<ren_base> renderer;
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color const& fill_ = sym.get_fill();
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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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agg::pixfmt_rgba32_plain pixf(buf);
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ren_base renb(pixf);
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unsigned r=fill_.red();
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unsigned g=fill_.green();
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unsigned b=fill_.blue();
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unsigned a=fill_.alpha();
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renderer ren(renb);
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ras_ptr->reset();
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ras_ptr->gamma(agg::gamma_linear(0.0, sym.get_gamma()));
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for (unsigned i=0;i<feature.num_geometries();++i)
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{
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geometry2d const& geom=feature.get_geometry(i);
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if (geom.num_points() > 2)
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{
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path_type path(t_,geom,prj_trans);
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ras_ptr->add_path(path);
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}
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}
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ren.color(agg::rgba8(r, g, b, int(a * sym.get_opacity())));
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agg::render_scanlines(*ras_ptr, sl, ren);
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}
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typedef boost::tuple<double,double,double,double> segment_t;
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bool y_order(segment_t const& first,segment_t const& second)
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{
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double miny0 = std::min(first.get<1>(),first.get<3>());
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double miny1 = std::min(second.get<1>(),second.get<3>());
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return miny0 > miny1;
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}
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template <typename T>
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void agg_renderer<T>::process(building_symbolizer const& sym,
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Feature const& feature,
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proj_transform const& prj_trans)
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{
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typedef coord_transform2<CoordTransform,geometry2d> path_type;
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typedef coord_transform3<CoordTransform,geometry2d> path_type_roof;
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typedef agg::renderer_base<agg::pixfmt_rgba32_plain> ren_base;
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typedef agg::renderer_scanline_aa_solid<ren_base> renderer;
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agg::rendering_buffer buf(pixmap_.raw_data(),width_,height_, width_ * 4);
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agg::pixfmt_rgba32_plain pixf(buf);
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ren_base renb(pixf);
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color const& fill_ = sym.get_fill();
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unsigned r=fill_.red();
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unsigned g=fill_.green();
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unsigned b=fill_.blue();
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unsigned a=fill_.alpha();
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renderer ren(renb);
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agg::scanline_u8 sl;
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ras_ptr->reset();
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ras_ptr->gamma(agg::gamma_linear());
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double height = 0.7071 * sym.height(); // height in meters
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for (unsigned i=0;i<feature.num_geometries();++i)
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{
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geometry2d const& geom = feature.get_geometry(i);
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if (geom.num_points() > 2)
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{
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boost::scoped_ptr<geometry2d> frame(new line_string_impl);
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boost::scoped_ptr<geometry2d> roof(new polygon_impl);
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std::deque<segment_t> face_segments;
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double x0(0);
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double y0(0);
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unsigned cm = geom.vertex(&x0,&y0);
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for (unsigned j=1;j<geom.num_points();++j)
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{
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double x,y;
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cm = geom.vertex(&x,&y);
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if (cm == SEG_MOVETO)
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{
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frame->move_to(x,y);
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}
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else if (cm == SEG_LINETO)
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{
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frame->line_to(x,y);
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face_segments.push_back(segment_t(x0,y0,x,y));
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}
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x0 = x;
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y0 = y;
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}
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std::sort(face_segments.begin(),face_segments.end(), y_order);
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std::deque<segment_t>::const_iterator itr=face_segments.begin();
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for (;itr!=face_segments.end();++itr)
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{
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boost::scoped_ptr<geometry2d> faces(new polygon_impl);
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faces->move_to(itr->get<0>(),itr->get<1>());
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faces->line_to(itr->get<2>(),itr->get<3>());
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faces->line_to(itr->get<2>(),itr->get<3>() + height);
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faces->line_to(itr->get<0>(),itr->get<1>() + height);
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path_type faces_path (t_,*faces,prj_trans);
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ras_ptr->add_path(faces_path);
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ren.color(agg::rgba8(int(r*0.8), int(g*0.8), int(b*0.8), int(a * sym.get_opacity())));
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agg::render_scanlines(*ras_ptr, sl, ren);
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ras_ptr->reset();
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frame->move_to(itr->get<0>(),itr->get<1>());
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frame->line_to(itr->get<0>(),itr->get<1>()+height);
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}
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geom.rewind(0);
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for (unsigned j=0;j<geom.num_points();++j)
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{
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double x,y;
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unsigned cm = geom.vertex(&x,&y);
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if (cm == SEG_MOVETO)
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{
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frame->move_to(x,y+height);
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roof->move_to(x,y+height);
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}
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else if (cm == SEG_LINETO)
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{
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frame->line_to(x,y+height);
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roof->line_to(x,y+height);
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}
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}
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path_type path(t_,*frame,prj_trans);
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agg::conv_stroke<path_type> stroke(path);
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ras_ptr->add_path(stroke);
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ren.color(agg::rgba8(r * 0.8, g * 0.8 , b * 0.8, int(255 * sym.get_opacity())));
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agg::render_scanlines(*ras_ptr, sl, ren);
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ras_ptr->reset();
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path_type roof_path (t_,*roof,prj_trans);
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ras_ptr->add_path(roof_path);
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ren.color(agg::rgba8(r, g, b, int(a * sym.get_opacity())));
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agg::render_scanlines(*ras_ptr, sl, ren);
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}
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}
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}
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template <typename T>
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void agg_renderer<T>::process(line_symbolizer const& sym,
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Feature const& feature,
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proj_transform const& prj_trans)
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{
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typedef agg::renderer_base<agg::pixfmt_rgba32_plain> ren_base;
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typedef coord_transform2<CoordTransform,geometry2d> path_type;
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typedef agg::renderer_outline_aa<ren_base> renderer_oaa;
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typedef agg::rasterizer_outline_aa<renderer_oaa> rasterizer_outline_aa;
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typedef agg::renderer_scanline_aa_solid<ren_base> renderer;
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agg::rendering_buffer buf(pixmap_.raw_data(),width_,height_, width_ * 4);
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agg::pixfmt_rgba32_plain pixf(buf);
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ren_base renb(pixf);
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mapnik::stroke const& stroke_ = sym.get_stroke();
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color const& col = stroke_.get_color();
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unsigned r=col.red();
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unsigned g=col.green();
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unsigned b=col.blue();
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unsigned a=col.alpha();
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renderer ren(renb);
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ras_ptr->reset();
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ras_ptr->gamma(agg::gamma_linear());
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agg::scanline_p8 sl;
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for (unsigned i=0;i<feature.num_geometries();++i)
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{
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geometry2d const& geom = feature.get_geometry(i);
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if (geom.num_points() > 1)
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{
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path_type path(t_,geom,prj_trans);
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if (stroke_.has_dash())
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{
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agg::conv_dash<path_type> dash(path);
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dash_array const& d = stroke_.get_dash_array();
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dash_array::const_iterator itr = d.begin();
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dash_array::const_iterator end = d.end();
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for (;itr != end;++itr)
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{
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dash.add_dash(itr->first, itr->second);
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}
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agg::conv_stroke<agg::conv_dash<path_type > > stroke(dash);
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line_join_e join=stroke_.get_line_join();
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if ( join == MITER_JOIN)
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stroke.generator().line_join(agg::miter_join);
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else if( join == MITER_REVERT_JOIN)
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stroke.generator().line_join(agg::miter_join);
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else if( join == ROUND_JOIN)
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stroke.generator().line_join(agg::round_join);
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else
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stroke.generator().line_join(agg::bevel_join);
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line_cap_e cap=stroke_.get_line_cap();
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if (cap == BUTT_CAP)
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stroke.generator().line_cap(agg::butt_cap);
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else if (cap == SQUARE_CAP)
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stroke.generator().line_cap(agg::square_cap);
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else
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stroke.generator().line_cap(agg::round_cap);
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stroke.generator().miter_limit(4.0);
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stroke.generator().width(stroke_.get_width());
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ras_ptr->add_path(stroke);
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}
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else
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{
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agg::conv_stroke<path_type> stroke(path);
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line_join_e join=stroke_.get_line_join();
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if ( join == MITER_JOIN)
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stroke.generator().line_join(agg::miter_join);
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else if( join == MITER_REVERT_JOIN)
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stroke.generator().line_join(agg::miter_join);
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else if( join == ROUND_JOIN)
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stroke.generator().line_join(agg::round_join);
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else
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stroke.generator().line_join(agg::bevel_join);
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line_cap_e cap=stroke_.get_line_cap();
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if (cap == BUTT_CAP)
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stroke.generator().line_cap(agg::butt_cap);
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else if (cap == SQUARE_CAP)
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stroke.generator().line_cap(agg::square_cap);
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else
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stroke.generator().line_cap(agg::round_cap);
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stroke.generator().miter_limit(4.0);
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stroke.generator().width(stroke_.get_width());
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ras_ptr->add_path(stroke);
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}
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}
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}
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ren.color(agg::rgba8(r, g, b, int(a*stroke_.get_opacity())));
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agg::render_scanlines(*ras_ptr, sl, ren);
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}
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template <typename T>
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void agg_renderer<T>::process(point_symbolizer const& sym,
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Feature const& feature,
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proj_transform const& prj_trans)
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{
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double x;
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double y;
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double z=0;
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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;
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if ( filename.empty() )
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{
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// default OGC 4x4 black square
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data = boost::optional<mapnik::image_ptr>(new image_data_32(4,4));
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(*data)->set(0xff000000);
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}
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else
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{
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data = mapnik::image_cache::instance()->find(filename,true);
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}
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if ( data )
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{
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for (unsigned i=0;i<feature.num_geometries();++i)
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{
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geometry2d const& geom = feature.get_geometry(i);
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geom.label_position(&x,&y);
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prj_trans.backward(x,y,z);
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t_.forward(&x,&y);
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int w = (*data)->width();
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int h = (*data)->height();
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int px=int(floor(x - 0.5 * w));
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int py=int(floor(y - 0.5 * h));
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box2d<double> label_ext (floor(x - 0.5 * w),
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floor(y - 0.5 * h),
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ceil (x + 0.5 * w),
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ceil (y + 0.5 * h));
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if (sym.get_allow_overlap() ||
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detector_.has_placement(label_ext))
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{
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pixmap_.set_rectangle_alpha2(*(*data),px,py,sym.get_opacity());
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detector_.insert(label_ext);
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}
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}
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}
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}
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template <typename T>
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void agg_renderer<T>::process(shield_symbolizer const& sym,
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Feature const& feature,
|
|
proj_transform const& prj_trans)
|
|
{
|
|
typedef coord_transform2<CoordTransform,geometry2d> path_type;
|
|
|
|
UnicodeString text;
|
|
if( sym.get_no_text() )
|
|
text = UnicodeString( " " ); // TODO: fix->use 'space' as the text to render
|
|
else
|
|
{
|
|
expression_ptr name_expr = sym.get_name();
|
|
if (!name_expr) return;
|
|
value_type result = boost::apply_visitor(evaluate<Feature,value_type>(feature),*name_expr);
|
|
text = result.to_unicode();
|
|
}
|
|
|
|
if ( sym.get_text_convert() == TOUPPER)
|
|
{
|
|
text = text.toUpper();
|
|
}
|
|
else if ( sym.get_text_convert() == TOLOWER)
|
|
{
|
|
text = text.toLower();
|
|
}
|
|
|
|
std::string filename = path_processor_type::evaluate( *sym.get_filename(), feature);
|
|
boost::optional<mapnik::image_ptr> data = mapnik::image_cache::instance()->find(filename,true);
|
|
|
|
if (text.length() > 0 && data)
|
|
{
|
|
face_set_ptr faces;
|
|
|
|
if (sym.get_fontset().size() > 0)
|
|
{
|
|
faces = font_manager_.get_face_set(sym.get_fontset());
|
|
}
|
|
else
|
|
{
|
|
faces = font_manager_.get_face_set(sym.get_face_name());
|
|
}
|
|
|
|
if (faces->size() > 0)
|
|
{
|
|
text_renderer<T> ren(pixmap_, faces);
|
|
|
|
ren.set_pixel_size(sym.get_text_size());
|
|
ren.set_fill(sym.get_fill());
|
|
ren.set_halo_fill(sym.get_halo_fill());
|
|
ren.set_halo_radius(sym.get_halo_radius());
|
|
|
|
placement_finder<label_collision_detector4> finder(detector_);
|
|
|
|
string_info info(text);
|
|
|
|
faces->get_string_info(info);
|
|
|
|
|
|
int w = (*data)->width();
|
|
int h = (*data)->height();
|
|
|
|
unsigned num_geom = feature.num_geometries();
|
|
for (unsigned i=0;i<num_geom;++i)
|
|
{
|
|
geometry2d const& geom = feature.get_geometry(i);
|
|
if (geom.num_points() > 0 )
|
|
{
|
|
path_type path(t_,geom,prj_trans);
|
|
|
|
label_placement_enum how_placed = sym.get_label_placement();
|
|
if (how_placed == POINT_PLACEMENT || how_placed == VERTEX_PLACEMENT)
|
|
{
|
|
// for every vertex, try and place a shield/text
|
|
geom.rewind(0);
|
|
for( unsigned jj = 0; jj < geom.num_points(); jj++ )
|
|
{
|
|
double label_x;
|
|
double label_y;
|
|
double z=0.0;
|
|
placement text_placement(info, sym, w, h, false);
|
|
text_placement.avoid_edges = sym.get_avoid_edges();
|
|
text_placement.allow_overlap = sym.get_allow_overlap();
|
|
if( how_placed == VERTEX_PLACEMENT )
|
|
geom.vertex(&label_x,&label_y); // by vertex
|
|
else
|
|
geom.label_position(&label_x, &label_y); // by middle of line or by point
|
|
prj_trans.backward(label_x,label_y, z);
|
|
t_.forward(&label_x,&label_y);
|
|
|
|
finder.find_point_placement( text_placement,label_x,label_y,0.0,sym.get_vertical_alignment(),sym.get_line_spacing(),
|
|
sym.get_character_spacing(),sym.get_horizontal_alignment(),sym.get_justify_alignment() );
|
|
|
|
// check to see if image overlaps anything too, there is only ever 1 placement found for points and verticies
|
|
if( text_placement.placements.size() > 0)
|
|
{
|
|
double x = text_placement.placements[0].starting_x;
|
|
double y = text_placement.placements[0].starting_y;
|
|
int px;
|
|
int py;
|
|
box2d<double> label_ext;
|
|
|
|
if( !sym.get_unlock_image() )
|
|
{ // center image at text center position
|
|
// remove displacement from image label
|
|
position pos = sym.get_displacement();
|
|
double lx = x - boost::get<0>(pos);
|
|
double ly = y - boost::get<1>(pos);
|
|
px=int(floor(lx - (0.5 * w))) ;
|
|
py=int(floor(ly - (0.5 * h))) ;
|
|
label_ext.init( floor(lx - 0.5 * w), floor(ly - 0.5 * h), ceil (lx + 0.5 * w), ceil (ly + 0.5 * h) );
|
|
}
|
|
else
|
|
{ // center image at reference location
|
|
px=int(floor(label_x - 0.5 * w));
|
|
py=int(floor(label_y - 0.5 * h));
|
|
label_ext.init( floor(label_x - 0.5 * w), floor(label_y - 0.5 * h), ceil (label_x + 0.5 * w), ceil (label_y + 0.5 * h));
|
|
}
|
|
|
|
if ( sym.get_allow_overlap() || detector_.has_placement(label_ext) )
|
|
{
|
|
//pixmap_.set_rectangle_alpha(px,py,*data);
|
|
pixmap_.set_rectangle_alpha2(*(*data),px,py,float(sym.get_opacity()));
|
|
box2d<double> dim = ren.prepare_glyphs(&text_placement.placements[0]);
|
|
ren.render(x,y);
|
|
detector_.insert(label_ext);
|
|
finder.update_detector(text_placement);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
else if (geom.num_points() > 1 && sym.get_label_placement() == LINE_PLACEMENT)
|
|
{
|
|
placement text_placement(info, sym, w, h, true);
|
|
text_placement.avoid_edges = sym.get_avoid_edges();
|
|
finder.find_point_placements<path_type>(text_placement,path);
|
|
|
|
for (unsigned int ii = 0; ii < text_placement.placements.size(); ++ ii)
|
|
{
|
|
int w = (*data)->width();
|
|
int h = (*data)->height();
|
|
double x = text_placement.placements[ii].starting_x;
|
|
double y = text_placement.placements[ii].starting_y;
|
|
|
|
int px=int(x - (w/2));
|
|
int py=int(y - (h/2));
|
|
|
|
pixmap_.set_rectangle_alpha(px,py,*(*data));
|
|
|
|
box2d<double> dim = ren.prepare_glyphs(&text_placement.placements[ii]);
|
|
ren.render(x,y);
|
|
}
|
|
finder.update_detector(text_placement);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
template <typename T>
|
|
void agg_renderer<T>::process(line_pattern_symbolizer const& sym,
|
|
Feature const& feature,
|
|
proj_transform const& prj_trans)
|
|
{
|
|
typedef coord_transform2<CoordTransform,geometry2d> path_type;
|
|
typedef agg::line_image_pattern<agg::pattern_filter_bilinear_rgba8> pattern_type;
|
|
typedef agg::renderer_base<agg::pixfmt_rgba32_plain> renderer_base;
|
|
typedef agg::renderer_outline_image<renderer_base, pattern_type> renderer_type;
|
|
typedef agg::rasterizer_outline_aa<renderer_type> rasterizer_type;
|
|
|
|
agg::rendering_buffer buf(pixmap_.raw_data(),width_,height_, width_ * 4);
|
|
agg::pixfmt_rgba32_plain pixf(buf);
|
|
|
|
std::string filename = path_processor_type::evaluate( *sym.get_filename(), feature);
|
|
boost::optional<mapnik::image_ptr> pat = mapnik::image_cache::instance()->find(filename,true);
|
|
|
|
if (!pat) return;
|
|
|
|
renderer_base ren_base(pixf);
|
|
agg::pattern_filter_bilinear_rgba8 filter;
|
|
pattern_source source(*(*pat));
|
|
pattern_type pattern (filter,source);
|
|
renderer_type ren(ren_base, pattern);
|
|
ren.clip_box(0,0,width_,height_);
|
|
rasterizer_type ras(ren);
|
|
|
|
for (unsigned i=0;i<feature.num_geometries();++i)
|
|
{
|
|
geometry2d const& geom = feature.get_geometry(i);
|
|
if (geom.num_points() > 1)
|
|
{
|
|
path_type path(t_,geom,prj_trans);
|
|
ras.add_path(path);
|
|
}
|
|
}
|
|
}
|
|
|
|
template <typename T>
|
|
void agg_renderer<T>::process(polygon_pattern_symbolizer const& sym,
|
|
Feature const& feature,
|
|
proj_transform const& prj_trans)
|
|
{
|
|
typedef coord_transform2<CoordTransform,geometry2d> path_type;
|
|
typedef agg::renderer_base<agg::pixfmt_rgba32_plain> ren_base;
|
|
typedef agg::wrap_mode_repeat wrap_x_type;
|
|
typedef agg::wrap_mode_repeat wrap_y_type;
|
|
typedef agg::pixfmt_alpha_blend_rgba<agg::blender_rgba32,
|
|
agg::row_accessor<agg::int8u>, agg::pixel32_type> rendering_buffer;
|
|
typedef agg::image_accessor_wrap<rendering_buffer,
|
|
wrap_x_type,
|
|
wrap_y_type> img_source_type;
|
|
|
|
typedef agg::span_pattern_rgba<img_source_type> span_gen_type;
|
|
|
|
typedef agg::renderer_scanline_aa<ren_base,
|
|
agg::span_allocator<agg::rgba8>,
|
|
span_gen_type> renderer_type;
|
|
|
|
|
|
agg::rendering_buffer buf(pixmap_.raw_data(),width_,height_, width_ * 4);
|
|
agg::pixfmt_rgba32_plain pixf(buf);
|
|
ren_base renb(pixf);
|
|
|
|
agg::scanline_u8 sl;
|
|
ras_ptr->reset();
|
|
ras_ptr->gamma(agg::gamma_linear());
|
|
|
|
std::string filename = path_processor_type::evaluate( *sym.get_filename(), feature);
|
|
boost::optional<mapnik::image_ptr> pat = mapnik::image_cache::instance()->find(filename,true);
|
|
|
|
if (!pat) return;
|
|
|
|
unsigned w=(*pat)->width();
|
|
unsigned h=(*pat)->height();
|
|
agg::row_accessor<agg::int8u> pattern_rbuf((agg::int8u*)(*pat)->getBytes(),w,h,w*4);
|
|
agg::span_allocator<agg::rgba8> sa;
|
|
agg::pixfmt_alpha_blend_rgba<agg::blender_rgba32,
|
|
agg::row_accessor<agg::int8u>, agg::pixel32_type> pixf_pattern(pattern_rbuf);
|
|
img_source_type img_src(pixf_pattern);
|
|
|
|
double x0=0,y0=0;
|
|
unsigned num_geometries = feature.num_geometries();
|
|
if (num_geometries>0)
|
|
{
|
|
path_type path(t_,feature.get_geometry(0),prj_trans);
|
|
path.vertex(&x0,&y0);
|
|
}
|
|
unsigned offset_x = unsigned(width_-x0);
|
|
unsigned offset_y = unsigned(height_-y0);
|
|
span_gen_type sg(img_src, offset_x, offset_y);
|
|
renderer_type rp(renb,sa, sg);
|
|
for (unsigned i=0;i<num_geometries;++i)
|
|
{
|
|
geometry2d const& geom = feature.get_geometry(i);
|
|
if (geom.num_points() > 2)
|
|
{
|
|
path_type path(t_,geom,prj_trans);
|
|
ras_ptr->add_path(path);
|
|
}
|
|
}
|
|
agg::render_scanlines(*ras_ptr, sl, rp);
|
|
}
|
|
|
|
template <typename T>
|
|
void agg_renderer<T>::process(raster_symbolizer const& sym,
|
|
Feature const& feature,
|
|
proj_transform const& prj_trans)
|
|
{
|
|
raster_ptr const& raster=feature.get_raster();
|
|
if (raster)
|
|
{
|
|
// If there's a colorizer defined, use it to color the raster in-place
|
|
raster_colorizer_ptr colorizer = sym.get_colorizer();
|
|
if (colorizer)
|
|
colorizer->colorize(raster);
|
|
|
|
box2d<double> ext=t_.forward(raster->ext_);
|
|
|
|
int start_x = rint(ext.minx());
|
|
int start_y = rint(ext.miny());
|
|
int raster_width = rint(ext.width());
|
|
int raster_height = rint(ext.height());
|
|
int end_x = start_x + raster_width;
|
|
int end_y = start_y + raster_height;
|
|
double err_offs_x = (ext.minx()-start_x + ext.maxx()-end_x)/2;
|
|
double err_offs_y = (ext.miny()-start_y + ext.maxy()-end_y)/2;
|
|
|
|
if ( raster_width > 0 && raster_height > 0)
|
|
{
|
|
image_data_32 target(raster_width,raster_height);
|
|
|
|
if (sym.get_scaling() == "fast") {
|
|
scale_image<image_data_32>(target,raster->data_);
|
|
} else if (sym.get_scaling() == "bilinear"){
|
|
scale_image_bilinear<image_data_32>(target,raster->data_, err_offs_x, err_offs_y);
|
|
} else if (sym.get_scaling() == "bilinear8"){
|
|
scale_image_bilinear8<image_data_32>(target,raster->data_, err_offs_x, err_offs_y);
|
|
} else {
|
|
scale_image<image_data_32>(target,raster->data_);
|
|
}
|
|
|
|
if (sym.get_mode() == "normal"){
|
|
if (sym.get_opacity() == 1.0) {
|
|
pixmap_.set_rectangle(start_x,start_y,target);
|
|
} else {
|
|
pixmap_.set_rectangle_alpha2(target,start_x,start_y, sym.get_opacity());
|
|
}
|
|
} else if (sym.get_mode() == "grain_merge"){
|
|
pixmap_.template merge_rectangle<MergeGrain> (target,start_x,start_y, sym.get_opacity());
|
|
} else if (sym.get_mode() == "grain_merge2"){
|
|
pixmap_.template merge_rectangle<MergeGrain2> (target,start_x,start_y, sym.get_opacity());
|
|
} else if (sym.get_mode() == "multiply"){
|
|
pixmap_.template merge_rectangle<Multiply> (target,start_x,start_y, sym.get_opacity());
|
|
} else if (sym.get_mode() == "multiply2"){
|
|
pixmap_.template merge_rectangle<Multiply2> (target,start_x,start_y, sym.get_opacity());
|
|
} else if (sym.get_mode() == "divide"){
|
|
pixmap_.template merge_rectangle<Divide> (target,start_x,start_y, sym.get_opacity());
|
|
} else if (sym.get_mode() == "divide2"){
|
|
pixmap_.template merge_rectangle<Divide2> (target,start_x,start_y, sym.get_opacity());
|
|
} else if (sym.get_mode() == "screen"){
|
|
pixmap_.template merge_rectangle<Screen> (target,start_x,start_y, sym.get_opacity());
|
|
} else if (sym.get_mode() == "hard_light"){
|
|
pixmap_.template merge_rectangle<HardLight> (target,start_x,start_y, sym.get_opacity());
|
|
} else {
|
|
if (sym.get_opacity() == 1.0){
|
|
pixmap_.set_rectangle(start_x,start_y,target);
|
|
} else {
|
|
pixmap_.set_rectangle_alpha2(target,start_x,start_y, sym.get_opacity());
|
|
}
|
|
}
|
|
// TODO: other modes? (add,diff,sub,...)
|
|
}
|
|
}
|
|
}
|
|
|
|
template <typename T>
|
|
void agg_renderer<T>::process(markers_symbolizer const& sym,
|
|
Feature const& feature,
|
|
proj_transform const& prj_trans)
|
|
{
|
|
typedef coord_transform2<CoordTransform,geometry2d> path_type;
|
|
typedef agg::pixfmt_rgba32 pixfmt;
|
|
typedef agg::renderer_base<pixfmt> renderer_base;
|
|
typedef agg::renderer_scanline_aa_solid<renderer_base> renderer_solid;
|
|
|
|
bool svg_marker;
|
|
arrow arrow_;
|
|
box2d<double> extent;
|
|
boost::optional<path_ptr> marker;
|
|
|
|
ras_ptr->reset();
|
|
ras_ptr->gamma(agg::gamma_linear());
|
|
agg::scanline_u8 sl;
|
|
agg::rendering_buffer buf(pixmap_.raw_data(), width_, height_, width_ * 4);
|
|
pixfmt pixf(buf);
|
|
renderer_base renb(pixf);
|
|
renderer_solid ren(renb);
|
|
|
|
color const& fill_ = sym.get_fill();
|
|
unsigned r = fill_.red();
|
|
unsigned g = fill_.green();
|
|
unsigned b = fill_.blue();
|
|
unsigned a = fill_.alpha();
|
|
|
|
|
|
for (unsigned i=0; i<feature.num_geometries(); ++i)
|
|
{
|
|
geometry2d const& geom = feature.get_geometry(i);
|
|
if (geom.num_points() <= 1) continue;
|
|
|
|
svg_marker = false;
|
|
extent = arrow_.extent();
|
|
|
|
std::string filename = path_processor_type::evaluate(*sym.get_filename(), feature);
|
|
|
|
if (!filename.empty())
|
|
{
|
|
marker = mapnik::marker_cache::instance()->find(filename, true);
|
|
if (marker && *marker)
|
|
{
|
|
svg_marker = true;
|
|
double x1, y1, x2, y2;
|
|
(*marker)->bounding_rect(&x1, &y1, &x2, &y2);
|
|
extent.init(x1, y1, x2, y2);
|
|
}
|
|
}
|
|
|
|
path_type path(t_,geom,prj_trans);
|
|
markers_placement<path_type, label_collision_detector4> placement(path, extent, detector_, sym.get_spacing(), sym.get_max_error(), sym.get_allow_overlap());
|
|
|
|
double x, y, angle;
|
|
|
|
while (placement.get_point(&x, &y, &angle))
|
|
{
|
|
agg::trans_affine matrix = agg::trans_affine_rotation(angle) * agg::trans_affine_translation(x, y);
|
|
if (svg_marker)
|
|
{
|
|
(*marker)->render(*ras_ptr, sl, ren, matrix, renb.clip_box(), 1.0);
|
|
}
|
|
else
|
|
{
|
|
agg::conv_transform<arrow, agg::trans_affine> trans(arrow_, matrix);
|
|
ras_ptr->add_path(trans);
|
|
ren.color(agg::rgba8(r, g, b, a));
|
|
agg::render_scanlines(*ras_ptr, sl, ren);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
template <typename T>
|
|
void agg_renderer<T>::process(text_symbolizer const& sym,
|
|
Feature const& feature,
|
|
proj_transform const& prj_trans)
|
|
{
|
|
typedef coord_transform2<CoordTransform,geometry2d> path_type;
|
|
|
|
expression_ptr name_expr = sym.get_name();
|
|
if (!name_expr) return;
|
|
value_type result = boost::apply_visitor(evaluate<Feature,value_type>(feature),*name_expr);
|
|
UnicodeString text = result.to_unicode();
|
|
|
|
if ( sym.get_text_convert() == TOUPPER)
|
|
{
|
|
text = text.toUpper();
|
|
}
|
|
else if ( sym.get_text_convert() == TOLOWER)
|
|
{
|
|
text = text.toLower();
|
|
}
|
|
|
|
if ( text.length() > 0 )
|
|
{
|
|
color const& fill = sym.get_fill();
|
|
|
|
face_set_ptr faces;
|
|
|
|
if (sym.get_fontset().size() > 0)
|
|
{
|
|
faces = font_manager_.get_face_set(sym.get_fontset());
|
|
}
|
|
else
|
|
{
|
|
faces = font_manager_.get_face_set(sym.get_face_name());
|
|
}
|
|
|
|
if (faces->size() > 0)
|
|
{
|
|
text_renderer<T> ren(pixmap_, faces);
|
|
ren.set_pixel_size(sym.get_text_size());
|
|
ren.set_fill(fill);
|
|
ren.set_halo_fill(sym.get_halo_fill());
|
|
ren.set_halo_radius(sym.get_halo_radius());
|
|
ren.set_opacity(sym.get_opacity());
|
|
|
|
placement_finder<label_collision_detector4> finder(detector_);
|
|
|
|
string_info info(text);
|
|
|
|
faces->get_string_info(info);
|
|
unsigned num_geom = feature.num_geometries();
|
|
for (unsigned i=0;i<num_geom;++i)
|
|
{
|
|
geometry2d const& geom = feature.get_geometry(i);
|
|
if (geom.num_points() > 0) // don't bother with empty geometries
|
|
{
|
|
placement text_placement(info,sym);
|
|
text_placement.avoid_edges = sym.get_avoid_edges();
|
|
if (sym.get_label_placement() == POINT_PLACEMENT)
|
|
{
|
|
double label_x, label_y, z=0.0;
|
|
geom.label_position(&label_x, &label_y);
|
|
prj_trans.backward(label_x,label_y, z);
|
|
t_.forward(&label_x,&label_y);
|
|
|
|
double angle = 0.0;
|
|
expression_ptr angle_expr = sym.get_orientation();
|
|
if (angle_expr)
|
|
{
|
|
// apply rotation
|
|
value_type result = boost::apply_visitor(evaluate<Feature,value_type>(feature),*angle_expr);
|
|
angle = result.to_double();
|
|
}
|
|
|
|
finder.find_point_placement(text_placement,label_x,label_y, angle, sym.get_vertical_alignment(),sym.get_line_spacing(),
|
|
sym.get_character_spacing(),sym.get_horizontal_alignment(),sym.get_justify_alignment());
|
|
|
|
finder.update_detector(text_placement);
|
|
}
|
|
else if ( geom.num_points() > 1 && sym.get_label_placement() == LINE_PLACEMENT)
|
|
{
|
|
path_type path(t_,geom,prj_trans);
|
|
finder.find_line_placements<path_type>(text_placement,path);
|
|
}
|
|
|
|
for (unsigned int ii = 0; ii < text_placement.placements.size(); ++ii)
|
|
{
|
|
double x = text_placement.placements[ii].starting_x;
|
|
double y = text_placement.placements[ii].starting_y;
|
|
box2d<double> dim = ren.prepare_glyphs(&text_placement.placements[ii]);
|
|
ren.render(x,y);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
throw config_error("Unable to find specified font face '" + sym.get_face_name() + "'");
|
|
}
|
|
}
|
|
}
|
|
|
|
template <typename T>
|
|
void agg_renderer<T>::process(glyph_symbolizer const& sym,
|
|
Feature const& feature,
|
|
proj_transform const& prj_trans)
|
|
{
|
|
face_set_ptr faces = font_manager_.get_face_set(sym.get_face_name());
|
|
if (faces->size() > 0)
|
|
{
|
|
// Get x and y from geometry and translate to pixmap coords.
|
|
double x, y, z=0.0;
|
|
feature.get_geometry(0).label_position(&x, &y);
|
|
prj_trans.backward(x,y,z);
|
|
t_.forward(&x, &y);
|
|
|
|
text_renderer<T> ren(pixmap_, faces);
|
|
|
|
// set fill and halo colors
|
|
color fill = sym.eval_color(feature);
|
|
ren.set_fill(fill);
|
|
if (fill != color("transparent")) {
|
|
ren.set_halo_fill(sym.get_halo_fill());
|
|
ren.set_halo_radius(sym.get_halo_radius());
|
|
}
|
|
|
|
// set font size
|
|
unsigned size = sym.eval_size(feature);
|
|
ren.set_pixel_size(size);
|
|
faces->set_pixel_sizes(size);
|
|
|
|
// Get and render text path
|
|
//
|
|
text_path_ptr path = sym.get_text_path(faces, feature);
|
|
// apply displacement
|
|
position pos = sym.get_displacement();
|
|
double dx = boost::get<0>(pos);
|
|
double dy = boost::get<1>(pos);
|
|
path->starting_x = x = x+dx;
|
|
path->starting_y = y = y+dy;
|
|
|
|
// Prepare glyphs to set internal state and calculate the marker's
|
|
// final box so we can check for a valid placement
|
|
box2d<double> dim = ren.prepare_glyphs(path.get());
|
|
double bsize = (dim.width()>dim.height()?dim.width():dim.height())/2;
|
|
box2d<double> ext(
|
|
floor(x-bsize), floor(y-bsize), ceil(x+bsize), ceil(y+bsize)
|
|
);
|
|
if ((sym.get_allow_overlap() || detector_.has_placement(ext)) &&
|
|
(!sym.get_avoid_edges() || detector_.extent().contains(ext)))
|
|
{
|
|
// Placement is valid, render glyph and update detector.
|
|
ren.render(x, y);
|
|
detector_.insert(ext);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
throw config_error(
|
|
"Unable to find specified font face in GlyphSymbolizer"
|
|
);
|
|
}
|
|
}
|
|
|
|
template class agg_renderer<image_32>;
|
|
}
|