mirror of
https://github.com/mapnik/mapnik.git
synced 2026-01-25 16:47:07 +00:00
99 lines
4.0 KiB
C++
99 lines
4.0 KiB
C++
/*****************************************************************************
|
|
*
|
|
* This file is part of Mapnik (c++ mapping toolkit)
|
|
*
|
|
* Copyright (C) 2011 Artem Pavlenko
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
*****************************************************************************/
|
|
|
|
// boost
|
|
|
|
|
|
// mapnik
|
|
#include <mapnik/feature.hpp>
|
|
#include <mapnik/agg_renderer.hpp>
|
|
#include <mapnik/graphics.hpp>
|
|
#include <mapnik/agg_helpers.hpp>
|
|
#include <mapnik/agg_rasterizer.hpp>
|
|
#include <mapnik/symbolizer.hpp>
|
|
#include <mapnik/vertex_converters.hpp>
|
|
#include <mapnik/renderer_common/process_polygon_symbolizer.hpp>
|
|
|
|
// agg
|
|
#include "agg_basics.h"
|
|
#include "agg_rendering_buffer.h"
|
|
#include "agg_pixfmt_rgba.h"
|
|
#include "agg_color_rgba.h"
|
|
#include "agg_renderer_scanline.h"
|
|
#include "agg_rasterizer_scanline_aa.h"
|
|
#include "agg_scanline_u.h"
|
|
|
|
namespace mapnik {
|
|
|
|
template <typename T0, typename T1>
|
|
void agg_renderer<T0,T1>::process(polygon_symbolizer const& sym,
|
|
mapnik::feature_impl & feature,
|
|
proj_transform const& prj_trans)
|
|
{
|
|
typedef boost::mpl::vector<clip_poly_tag,transform_tag,affine_transform_tag,simplify_tag,smooth_tag> conv_types;
|
|
typedef vertex_converter<box2d<double>, rasterizer, polygon_symbolizer,
|
|
CoordTransform, proj_transform, agg::trans_affine,
|
|
conv_types> vertex_converter_type;
|
|
|
|
ras_ptr->reset();
|
|
double gamma = get<value_double>(sym, keys::gamma, feature, 1.0);
|
|
gamma_method_enum gamma_method = get<gamma_method_enum>(sym, keys::gamma_method, feature, GAMMA_POWER);
|
|
if (gamma != gamma_ || gamma_method != gamma_method_)
|
|
{
|
|
set_gamma_method(ras_ptr, gamma, gamma_method);
|
|
gamma_method_ = gamma_method;
|
|
gamma_ = gamma;
|
|
}
|
|
|
|
box2d<double> clip_box = clipping_extent();
|
|
agg::rendering_buffer buf(current_buffer_->raw_data(),current_buffer_->width(),current_buffer_->height(), current_buffer_->width() * 4);
|
|
|
|
render_polygon_symbolizer<vertex_converter_type>(
|
|
sym, feature, prj_trans, common_, clip_box, *ras_ptr,
|
|
[&](color const &fill, double opacity) {
|
|
unsigned r=fill.red();
|
|
unsigned g=fill.green();
|
|
unsigned b=fill.blue();
|
|
unsigned a=fill.alpha();
|
|
typedef agg::rgba8 color_type;
|
|
typedef agg::order_rgba order_type;
|
|
typedef agg::comp_op_adaptor_rgba_pre<color_type, order_type> blender_type; // comp blender
|
|
typedef agg::pixfmt_custom_blend_rgba<blender_type, agg::rendering_buffer> pixfmt_comp_type;
|
|
typedef agg::renderer_base<pixfmt_comp_type> renderer_base;
|
|
typedef agg::renderer_scanline_aa_solid<renderer_base> renderer_type;
|
|
pixfmt_comp_type pixf(buf);
|
|
pixf.comp_op(get<agg::comp_op_e>(sym, keys::comp_op, feature, agg::comp_op_src_over));
|
|
renderer_base renb(pixf);
|
|
renderer_type ren(renb);
|
|
ren.color(agg::rgba8_pre(r, g, b, int(a * opacity)));
|
|
agg::scanline_u8 sl;
|
|
ras_ptr->filling_rule(agg::fill_even_odd);
|
|
agg::render_scanlines(*ras_ptr, sl, ren);
|
|
});
|
|
}
|
|
|
|
template void agg_renderer<image_32>::process(polygon_symbolizer const&,
|
|
mapnik::feature_impl &,
|
|
proj_transform const&);
|
|
|
|
}
|