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// K-3D
// Copyright (c) 1995-2005, Timothy M. Shead
//
// Contact: tshead@k-3d.com
//
// This program 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 (at your option) 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
/** \file
\author Anders Dahnielson (anders@dahnielson.com)
*/
#include "simple_modifier.h"
#include <k3d-i18n-config.h>
#include <k3dsdk/document_plugin_factory.h>
namespace module
{
namespace bitmap
{
/////////////////////////////////////////////////////////////////////////////
// matte_colordiff
class matte_colordiff :
public simple_modifier
{
typedef simple_modifier base;
public:
matte_colordiff(k3d::iplugin_factory& Factory, k3d::idocument& Document) :
base(Factory, Document),
m_threshold(init_owner(*this) + init_name("threshold") + init_label(_("Threshold Value")) + init_description(_("Set alpha channel using color difference")) + init_value(0.0))
{
m_threshold.changed_signal().connect(k3d::hint::converter<
k3d::hint::convert<k3d::hint::any, k3d::hint::bitmap_pixels_changed> >(make_update_bitmap_slot()));
}
struct functor
{
functor(const double Threshold) :
threshold(Threshold)
{
}
k3d::pixel operator()(const k3d::pixel& Input)
{
const half red = boost::gil::get_color(Input, boost::gil::red_t());
const half green = boost::gil::get_color(Input, boost::gil::green_t());
const half blue = boost::gil::get_color(Input, boost::gil::blue_t());
const half alpha = boost::gil::get_color(Input, boost::gil::alpha_t());
return k3d::pixel(
red,
green,
std::min(green, blue),
blue > threshold ? 1 - (blue - std::max(red, green)) : 1);
}
const double threshold;
};
void on_assign_pixels(const k3d::bitmap& Input, k3d::bitmap& Output)
{
boost::gil::transform_pixels(const_view(Input), view(Output), functor(m_threshold.pipeline_value()));
}
static k3d::iplugin_factory& get_factory()
{
static k3d::document_plugin_factory<matte_colordiff,
k3d::interface_list<k3d::ibitmap_source,
k3d::interface_list<k3d::ibitmap_sink> > > factory(
k3d::uuid(0xeefaccf2, 0x65bc4c78, 0xbd46cbdb, 0x5ca5d3e2),
"BitmapMatteColorDiff",
_("Create alpha channel using color difference"),
"Bitmap",
k3d::iplugin_factory::STABLE);
return factory;
}
private:
k3d_data(double, immutable_name, change_signal, with_undo, local_storage, no_constraint, writable_property, with_serialization) m_threshold;
};
/////////////////////////////////////////////////////////////////////////////
// matte_colordiff_factory
k3d::iplugin_factory& matte_colordiff_factory()
{
return matte_colordiff::get_factory();
}
} // namespace bitmap
} // namespace module
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