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/*****************************************************************************
*
* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2012 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
*
*****************************************************************************/
// mapnik
#include <mapnik/raster_symbolizer.hpp>
// mapnik
#include <mapnik/config.hpp>
#include <mapnik/debug.hpp>
#include <mapnik/raster_colorizer.hpp>
#include <mapnik/symbolizer.hpp>
#include <mapnik/image_util.hpp>
#include <mapnik/image_compositing.hpp>
#include <mapnik/image_scaling.hpp>
// boost
#include <boost/algorithm/string.hpp>
namespace mapnik
{
raster_symbolizer::raster_symbolizer()
: symbolizer_base(),
mode_("normal"),
scaling_(SCALING_NEAR),
opacity_(1.0),
colorizer_(),
filter_factor_(-1),
mesh_size_(16) {}
raster_symbolizer::raster_symbolizer(raster_symbolizer const& rhs)
: symbolizer_base(rhs),
mode_(rhs.mode_),
scaling_(rhs.scaling_),
opacity_(rhs.opacity_),
colorizer_(rhs.colorizer_),
filter_factor_(rhs.filter_factor_),
mesh_size_(rhs.mesh_size_),
premultiplied_(rhs.premultiplied_) {}
std::string const& raster_symbolizer::get_mode() const
{
MAPNIK_LOG_ERROR(raster_symbolizer) << "getting 'mode' is deprecated and will be removed in Mapnik 3.x, use 'comp-op' with Mapnik >= 2.1.x";
return mode_;
}
void raster_symbolizer::set_mode(std::string const& mode)
{
MAPNIK_LOG_ERROR(raster_symbolizer) << "setting 'mode' is deprecated and will be removed in Mapnik 3.x, use 'comp-op' with Mapnik >= 2.1.x";
mode_ = mode;
if (mode == "normal")
{
MAPNIK_LOG_ERROR(raster_symbolizer) << "converting 'mode=normal' to 'comp-op:src_over'";
this->set_comp_op(src_over);
}
else
{
std::string mode2 = boost::algorithm::replace_last_copy(mode,"2","");
boost::optional<composite_mode_e> comp_op = comp_op_from_string(mode2);
if (comp_op)
{
MAPNIK_LOG_ERROR(raster_symbolizer) << "converting 'mode:" << mode << "' to 'comp-op:" + *comp_op_to_string(*comp_op) + "'";
this->set_comp_op(*comp_op);
}
else
{
MAPNIK_LOG_ERROR(raster_symbolizer) << "could not convert mode '" << mode << "' into comp-op, defaulting to 'comp-op:src-over'";
}
}
}
scaling_method_e raster_symbolizer::get_scaling_method() const
{
return scaling_;
}
void raster_symbolizer::set_scaling_method(scaling_method_e scaling)
{
scaling_ = scaling;
}
void raster_symbolizer::set_opacity(float opacity)
{
opacity_ = opacity;
}
float raster_symbolizer::get_opacity() const
{
return opacity_;
}
raster_colorizer_ptr raster_symbolizer::get_colorizer() const
{
return colorizer_;
}
void raster_symbolizer::set_colorizer(raster_colorizer_ptr const& colorizer)
{
colorizer_ = colorizer;
}
double raster_symbolizer::get_filter_factor() const
{
return filter_factor_;
}
void raster_symbolizer::set_filter_factor(double filter_factor)
{
filter_factor_=filter_factor;
}
double raster_symbolizer::calculate_filter_factor() const
{
if (filter_factor_ > 0)
{
// respect explicitly specified values
return filter_factor_;
} else {
double ff = 1.0;
switch(scaling_)
{
case SCALING_NEAR:
ff = 1.0;
break;
// TODO potentially some of these algorithms would use filter_factor >2.0.
// Contributions welcome from someone who knows more about them.
case SCALING_BILINEAR:
case SCALING_BILINEAR8:
case SCALING_BICUBIC:
case SCALING_SPLINE16:
case SCALING_SPLINE36:
case SCALING_HANNING:
case SCALING_HAMMING:
case SCALING_HERMITE:
case SCALING_KAISER:
case SCALING_QUADRIC:
case SCALING_CATROM:
case SCALING_GAUSSIAN:
case SCALING_BESSEL:
case SCALING_MITCHELL:
case SCALING_SINC:
case SCALING_LANCZOS:
case SCALING_BLACKMAN:
ff = 2.0;
break;
}
return ff;
}
}
unsigned raster_symbolizer::get_mesh_size() const
{
return mesh_size_;
}
void raster_symbolizer::set_mesh_size(unsigned mesh_size)
{
mesh_size_=mesh_size;
}
void raster_symbolizer::set_premultiplied(bool premultiplied)
{
premultiplied_=premultiplied;
}
boost::optional<bool> raster_symbolizer::premultiplied() const
{
return premultiplied_;
}
}
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