102 lines
3 KiB
C++
102 lines
3 KiB
C++
|
/* This file is part of Mapnik (c++ mapping toolkit)
|
||
|
|
* Copyright (C) 2005 Artem Pavlenko
|
||
|
|
*
|
||
|
|
* Mapnik is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU General Public License
|
||
|
|
* as published by the Free Software Foundation; either version 2
|
||
|
|
* of the License, or any later version.
|
||
|
|
*
|
||
|
|
* This program 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 General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this program; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
||
|
|
*/
|
||
|
|
|
||
|
|
//$Id$
|
||
|
|
|
||
|
|
#include "line_pattern_symbolizer.hpp"
|
||
|
|
#include "image_reader.hpp"
|
||
|
|
#include "agg_basics.h"
|
||
|
|
#include "agg_rendering_buffer.h"
|
||
|
|
#include "agg_rasterizer_scanline_aa.h"
|
||
|
|
#include "agg_rasterizer_outline_aa.h"
|
||
|
|
#include "agg_scanline_p.h"
|
||
|
|
#include "agg_scanline_u.h"
|
||
|
|
#include "agg_renderer_scanline.h"
|
||
|
|
#include "agg_pixfmt_rgba.h"
|
||
|
|
#include "agg_path_storage.h"
|
||
|
|
#include "agg_span_allocator.h"
|
||
|
|
#include "agg_span_pattern_rgba.h"
|
||
|
|
#include "agg_image_accessors.h"
|
||
|
|
#include "agg_pattern_filters_rgba.h"
|
||
|
|
#include "agg_renderer_outline_image.h"
|
||
|
|
|
||
|
|
namespace mapnik
|
||
|
|
{
|
||
|
|
class pattern_source : private boost::noncopyable
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
pattern_source(ImageData32 const& pattern)
|
||
|
|
: pattern_(pattern) {}
|
||
|
|
|
||
|
|
unsigned int width() const
|
||
|
|
{
|
||
|
|
return pattern_.width();
|
||
|
|
}
|
||
|
|
unsigned int height() const
|
||
|
|
{
|
||
|
|
return pattern_.height();
|
||
|
|
}
|
||
|
|
agg::rgba8 pixel(int x, int y) const
|
||
|
|
{
|
||
|
|
unsigned c = pattern_(x,y);
|
||
|
|
return agg::rgba8(c & 0xff, (c >> 8) & 0xff, (c >> 16) & 0xff,(c >> 24) & 0xff);
|
||
|
|
}
|
||
|
|
private:
|
||
|
|
ImageData32 const& pattern_;
|
||
|
|
};
|
||
|
|
|
||
|
|
line_pattern_symbolizer::line_pattern_symbolizer(std::string const& file,
|
||
|
|
std::string const& type,
|
||
|
|
unsigned width,unsigned height)
|
||
|
|
: symbolizer(),
|
||
|
|
pattern_(width,height)
|
||
|
|
{
|
||
|
|
try
|
||
|
|
{
|
||
|
|
std::auto_ptr<ImageReader> reader(get_image_reader(type,file));
|
||
|
|
reader->read(0,0,pattern_);
|
||
|
|
}
|
||
|
|
catch (...)
|
||
|
|
{
|
||
|
|
std::cerr<<"exception caught..."<<std::endl;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void line_pattern_symbolizer::render(geometry_type& geom,Image32& image) const
|
||
|
|
{
|
||
|
|
|
||
|
|
typedef agg::line_image_pattern<agg::pattern_filter_bilinear_rgba8> pattern_type;
|
||
|
|
typedef agg::renderer_base<agg::pixfmt_rgba32> renderer_base;
|
||
|
|
typedef agg::renderer_outline_image<renderer_base, pattern_type> renderer_type;
|
||
|
|
typedef agg::rasterizer_outline_aa<renderer_type> rasterizer_type;
|
||
|
|
|
||
|
|
unsigned int width=image.width();
|
||
|
|
unsigned int height=image.height();
|
||
|
|
agg::row_ptr_cache<agg::int8u> buf(image.raw_data(), width, height,width*4);
|
||
|
|
agg::pixfmt_rgba32 pixf(buf);
|
||
|
|
renderer_base ren_base(pixf);
|
||
|
|
agg::pattern_filter_bilinear_rgba8 filter;
|
||
|
|
pattern_source source(pattern_);
|
||
|
|
pattern_type pattern (filter,source);
|
||
|
|
renderer_type ren(ren_base, pattern);
|
||
|
|
ren.clip_box(0,0,width,height);
|
||
|
|
rasterizer_type ras(ren);
|
||
|
|
ras.add_path(geom);
|
||
|
|
}
|
||
|
|
}
|