119 lines
4.3 KiB
C++
119 lines
4.3 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
|
|
*
|
|
*****************************************************************************/
|
|
//$Id$
|
|
|
|
// boost
|
|
#include <boost/foreach.hpp>
|
|
// mapnik
|
|
#include <mapnik/agg_renderer.hpp>
|
|
#include <mapnik/agg_helpers.hpp>
|
|
#include <mapnik/agg_rasterizer.hpp>
|
|
#include <mapnik/polygon_symbolizer.hpp>
|
|
#include <mapnik/vertex_converters.hpp>
|
|
|
|
// agg
|
|
#include "agg_basics.h"
|
|
#include "agg_rendering_buffer.h"
|
|
#include "agg_pixfmt_rgba.h"
|
|
#include "agg_rasterizer_scanline_aa.h"
|
|
#include "agg_scanline_u.h"
|
|
|
|
namespace mapnik {
|
|
|
|
template <typename T>
|
|
void agg_renderer<T>::process(polygon_symbolizer const& sym,
|
|
mapnik::feature_ptr const& feature,
|
|
proj_transform const& prj_trans)
|
|
{
|
|
|
|
ras_ptr->reset();
|
|
set_gamma_method(sym,ras_ptr);
|
|
|
|
box2d<double> inflated_extent = query_extent_ * 1.1;
|
|
|
|
typedef boost::mpl::vector<clip_poly_tag,transform_tag,affine_transform_tag,smooth_tag> conv_types;
|
|
vertex_converter<box2d<double>,rasterizer,polygon_symbolizer, proj_transform, CoordTransform,conv_types>
|
|
converter(inflated_extent,*ras_ptr,sym,t_,prj_trans);
|
|
|
|
if (sym.clip()) converter.set<clip_poly_tag>(); //optional clip (default: true)
|
|
converter.set<transform_tag>(); //always transform
|
|
converter.set<affine_transform_tag>();
|
|
if (sym.smooth() > 0.0) converter.set<smooth_tag>(); // optional smooth converter
|
|
|
|
BOOST_FOREACH( geometry_type & geom, feature->paths())
|
|
{
|
|
if (geom.num_points() > 2)
|
|
{
|
|
converter.apply(geom);
|
|
}
|
|
}
|
|
|
|
agg::rendering_buffer buf(current_buffer_->raw_data(),width_,height_, width_ * 4);
|
|
|
|
color const& fill = sym.get_fill();
|
|
unsigned r=fill.red();
|
|
unsigned g=fill.green();
|
|
unsigned b=fill.blue();
|
|
unsigned a=fill.alpha();
|
|
|
|
if (sym.comp_op())
|
|
{
|
|
typedef agg::rgba8 color_type;
|
|
typedef agg::order_rgba order_type;
|
|
typedef agg::pixel32_type pixel_type;
|
|
typedef agg::comp_op_adaptor_rgba<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(static_cast<agg::comp_op_e>(*sym.comp_op()));
|
|
renderer_base renb(pixf);
|
|
renderer_type ren(renb);
|
|
ren.color(agg::rgba8(r, g, b, int(a * sym.get_opacity())));
|
|
agg::scanline_u8 sl;
|
|
agg::render_scanlines(*ras_ptr, sl, ren);
|
|
}
|
|
else if (style_level_compositing_)
|
|
{
|
|
// use plain pixel format
|
|
agg::pixfmt_rgba32_plain pixf(buf);
|
|
renderer_scanline_solid<agg::pixfmt_rgba32_plain> ren;
|
|
ren.attach(pixf);
|
|
ren.color(agg::rgba8(r, g, b, int(a * sym.get_opacity())));
|
|
ren.render(*ras_ptr);
|
|
}
|
|
else
|
|
{
|
|
agg::pixfmt_rgba32 pixf(buf);
|
|
renderer_scanline_solid<agg::pixfmt_rgba32> ren;
|
|
ren.attach(pixf);
|
|
ren.color(agg::rgba8(r, g, b, int(a * sym.get_opacity())));
|
|
ren.render(*ras_ptr);
|
|
}
|
|
}
|
|
|
|
template void agg_renderer<image_32>::process(polygon_symbolizer const&,
|
|
mapnik::feature_ptr const&,
|
|
proj_transform const&);
|
|
|
|
}
|
|
|