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117 lines
4.5 KiB
C++
117 lines
4.5 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/make_unique.hpp>
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#include <mapnik/graphics.hpp>
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#include <mapnik/feature.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_helpers.hpp>
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#include <mapnik/segment.hpp>
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#include <mapnik/symbolizer.hpp>
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#include <mapnik/expression_evaluator.hpp>
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#include <mapnik/expression.hpp>
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#include <mapnik/renderer_common/process_building_symbolizer.hpp>
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#include <mapnik/transform_path_adapter.hpp>
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// stl
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#include <deque>
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// agg
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#include "agg_basics.h"
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#include "agg_rendering_buffer.h"
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#include "agg_color_rgba.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_scanline_u.h"
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#include "agg_renderer_scanline.h"
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#include "agg_conv_stroke.h"
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namespace mapnik
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{
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template <typename T0,typename T1>
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void agg_renderer<T0,T1>::process(building_symbolizer const& sym,
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mapnik::feature_impl & feature,
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proj_transform const& prj_trans)
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{
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using path_type = transform_path_adapter<view_transform,geometry_type>;
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using ren_base = agg::renderer_base<agg::pixfmt_rgba32_pre>;
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using renderer = agg::renderer_scanline_aa_solid<ren_base>;
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agg::rendering_buffer buf(current_buffer_->raw_data(),current_buffer_->width(),current_buffer_->height(), current_buffer_->width() * 4);
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agg::pixfmt_rgba32_pre pixf(buf);
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ren_base renb(pixf);
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value_double opacity = get<value_double,keys::fill_opacity>(sym,feature, common_.vars_);
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color const& fill = get<color, keys::fill>(sym, feature, common_.vars_);
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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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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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double height = get<double, keys::height>(sym, feature, common_.vars_) * common_.scale_factor_;
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render_building_symbolizer(
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feature, height,
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[&,r,g,b,a,opacity](geometry_type &faces) {
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path_type faces_path (this->common_.t_,faces,prj_trans);
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ras_ptr->add_path(faces_path);
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ren.color(agg::rgba8_pre(int(r*0.8), int(g*0.8), int(b*0.8), int(a * opacity)));
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agg::render_scanlines(*ras_ptr, sl, ren);
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this->ras_ptr->reset();
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},
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[&,r,g,b,a,opacity](geometry_type &frame) {
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path_type path(common_.t_,frame,prj_trans);
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agg::conv_stroke<path_type> stroke(path);
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stroke.width(common_.scale_factor_);
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ras_ptr->add_path(stroke);
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ren.color(agg::rgba8_pre(int(r*0.8), int(g*0.8), int(b*0.8), int(a * opacity)));
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agg::render_scanlines(*ras_ptr, sl, ren);
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ras_ptr->reset();
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},
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[&,r,g,b,a,opacity](geometry_type &roof) {
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path_type roof_path (common_.t_,roof,prj_trans);
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ras_ptr->add_path(roof_path);
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ren.color(agg::rgba8_pre(r, g, b, int(a * opacity)));
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agg::render_scanlines(*ras_ptr, sl, ren);
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});
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}
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template void agg_renderer<image_32>::process(building_symbolizer const&,
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mapnik::feature_impl &,
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proj_transform const&);
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}
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