85 lines
2.7 KiB
C++
85 lines
2.7 KiB
C++
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/*****************************************************************************
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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) 2011 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/grid/grid_rasterizer.hpp>
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#include <mapnik/grid/grid_renderer.hpp>
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#include <mapnik/grid/grid_pixfmt.hpp>
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#include <mapnik/grid/grid_pixel.hpp>
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#include <mapnik/grid/grid.hpp>
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// agg
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#include "agg_rasterizer_scanline_aa.h"
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#include "agg_renderer_scanline.h"
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#include "agg_scanline_u.h"
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// stl
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#include <string>
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#include <map>
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namespace mapnik {
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template <typename T>
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void grid_renderer<T>::process(polygon_pattern_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,geometry_type> path_type;
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typedef agg::renderer_base<mapnik::pixfmt_gray16> ren_base;
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typedef agg::renderer_scanline_aa_solid<ren_base> renderer;
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agg::scanline_u8 sl;
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grid_rendering_buffer buf(pixmap_.raw_data(), width_, height_, width_);
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mapnik::pixfmt_gray16 pixf(buf);
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ren_base renb(pixf);
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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, 0.0));
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for (unsigned i=0;i<feature.num_geometries();++i)
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{
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geometry_type 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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// render id
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ren.color(mapnik::gray16(feature.id()));
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agg::render_scanlines(*ras_ptr, sl, ren);
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// add feature properties to grid cache
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pixmap_.add_feature(feature);
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}
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template void grid_renderer<grid>::process(polygon_pattern_symbolizer const&,
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Feature const&,
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proj_transform const&);
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}
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