137 lines
3.7 KiB
C++
137 lines
3.7 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) 2012 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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#ifndef MAPNIK_AGG_HELPERS_HPP
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#define MAPNIK_AGG_HELPERS_HPP
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// agg
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#include "agg_basics.h"
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#include "agg_gamma_functions.h"
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#include "agg_math_stroke.h"
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#include "agg_pixfmt_rgba.h"
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#include "agg_scanline_u.h"
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#include "agg_scanline_p.h"
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#include "agg_renderer_outline_aa.h"
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#include "agg_renderer_scanline.h"
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namespace mapnik {
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template <typename T0, typename T1>
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void set_gamma_method(T0 const& obj, T1 & ras_ptr)
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{
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switch (obj.get_gamma_method())
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{
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case GAMMA_POWER:
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ras_ptr->gamma(agg::gamma_power(obj.get_gamma()));
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break;
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case GAMMA_LINEAR:
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ras_ptr->gamma(agg::gamma_linear(0.0, obj.get_gamma()));
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break;
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case GAMMA_NONE:
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ras_ptr->gamma(agg::gamma_none());
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break;
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case GAMMA_THRESHOLD:
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ras_ptr->gamma(agg::gamma_threshold(obj.get_gamma()));
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break;
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case GAMMA_MULTIPLY:
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ras_ptr->gamma(agg::gamma_multiply(obj.get_gamma()));
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break;
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default:
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ras_ptr->gamma(agg::gamma_power(obj.get_gamma()));
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}
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}
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template <typename Stroke,typename PathType>
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void set_join_caps(Stroke const& stroke_, PathType & stroke)
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{
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line_join_e join=stroke_.get_line_join();
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switch (join)
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{
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case MITER_JOIN:
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stroke.generator().line_join(agg::miter_join);
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break;
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case MITER_REVERT_JOIN:
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stroke.generator().line_join(agg::miter_join);
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break;
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case ROUND_JOIN:
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stroke.generator().line_join(agg::round_join);
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break;
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default:
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stroke.generator().line_join(agg::bevel_join);
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}
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line_cap_e cap=stroke_.get_line_cap();
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switch (cap)
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{
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case BUTT_CAP:
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stroke.generator().line_cap(agg::butt_cap);
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break;
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case SQUARE_CAP:
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stroke.generator().line_cap(agg::square_cap);
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break;
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default:
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stroke.generator().line_cap(agg::round_cap);
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}
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}
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template <typename PixelFormat>
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struct renderer_scanline_solid : private boost::noncopyable
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{
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typedef PixelFormat pixfmt_type;
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typedef typename pixfmt_type::color_type color_type;
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typedef typename pixfmt_type::row_data row_data;
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typedef agg::renderer_base<pixfmt_type> ren_base;
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typedef agg::renderer_scanline_aa_solid<ren_base> renderer;
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typedef agg::scanline_u8 scanline_type;
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renderer_scanline_solid()
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: renb_(),
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ren_(renb_)
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{}
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template <typename PF>
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void attach(PF & pf)
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{
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renb_.attach(pf);
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}
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void color(color_type const& c)
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{
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ren_.color(c);
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}
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template <typename Rasterizer>
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void render(Rasterizer & ras)
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{
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agg::render_scanlines(ras, sl_, ren_);
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sl_.reset_spans();
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}
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scanline_type sl_;
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ren_base renb_;
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renderer ren_;
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};
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}
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#endif //MAPNIK_AGG_HELPERS_HPP
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