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// K-3D
// Copyright (c) 1995-2004, 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 <k3dsdk/module.h>
#include <k3dsdk/plugins.h>
#include "bitmap_filter_simple.h"
namespace libk3dbitmap
{
/////////////////////////////////////////////////////////////////////////////
// bitmap_threshold_implementation
class bitmap_threshold_implementation :
public bitmap_filter_simple
{
typedef bitmap_filter_simple base;
public:
bitmap_threshold_implementation(k3d::idocument& Document) :
base(Document),
m_red_threshold(k3d::init_name("red_threshold") + k3d::init_description("Red channel threshold [double]") + k3d::init_value(0.0) + k3d::init_document(Document)),
m_green_threshold(k3d::init_name("geen_threshold") + k3d::init_description("Green channel threshold [double]") + k3d::init_value(0.0) + k3d::init_document(Document)),
m_blue_threshold(k3d::init_name("blue_threshold") + k3d::init_description("Blue channel threshold [double]") + k3d::init_value(0.0) + k3d::init_document(Document)),
m_alpha_threshold(k3d::init_name("alpha_threshold") + k3d::init_description("Alpha channel threshold [double]") + k3d::init_value(0.0) + k3d::init_document(Document))
{
enable_serialization(k3d::persistence::proxy(m_red_threshold));
enable_serialization(k3d::persistence::proxy(m_green_threshold));
enable_serialization(k3d::persistence::proxy(m_blue_threshold));
enable_serialization(k3d::persistence::proxy(m_alpha_threshold));
register_property(m_red_threshold);
register_property(m_green_threshold);
register_property(m_blue_threshold);
register_property(m_alpha_threshold);
m_red_threshold.changed_signal().connect(SigC::slot(*this, &bitmap_threshold_implementation::on_value_change));
m_green_threshold.changed_signal().connect(SigC::slot(*this, &bitmap_threshold_implementation::on_value_change));
m_blue_threshold.changed_signal().connect(SigC::slot(*this, &bitmap_threshold_implementation::on_value_change));
m_alpha_threshold.changed_signal().connect(SigC::slot(*this, &bitmap_threshold_implementation::on_value_change));
}
void on_value_change()
{
m_red_cache = m_red_threshold.property_value();
m_green_cache = m_green_threshold.property_value();
m_blue_cache = m_blue_threshold.property_value();
m_alpha_cache = m_alpha_threshold.property_value();
on_reset_bitmap();
}
void on_filter(const k3d::pixel& I, k3d::pixel& O)
{
double I_red = k3d::color_traits<double>::convert(I.red);
double I_green = k3d::color_traits<double>::convert(I.green);
double I_blue = k3d::color_traits<double>::convert(I.blue);
double I_alpha = k3d::color_traits<double>::convert(I.alpha);
// Matte divide ...
if (I_alpha != 0)
{
I_red = I_red / I_alpha;
I_green = I_green / I_alpha;
I_blue = I_blue / I_alpha;
}
// Color operation ...
const double O_red = std::max(I_red, m_red_cache);
const double O_green = std::max(I_green, m_green_cache);
const double O_blue = std::max(I_blue, m_blue_cache);
const double O_alpha = std::max(I_alpha, m_alpha_cache);
// Matte multiply ...
O.red = k3d::bitmap::pixel_type::sample_traits::convert(O_red * I_alpha);
O.green = k3d::bitmap::pixel_type::sample_traits::convert(O_green * I_alpha);
O.blue = k3d::bitmap::pixel_type::sample_traits::convert(O_blue * I_alpha);
O.alpha = O_alpha;
}
k3d::iplugin_factory& factory()
{
return get_factory();
}
static k3d::iplugin_factory& get_factory()
{
static k3d::plugin_factory<
k3d::document_plugin<bitmap_threshold_implementation>,
k3d::interface_list<k3d::ibitmap_source,
k3d::interface_list<k3d::ibitmap_sink> > > factory(
k3d::uuid(0xcc8d625b, 0x970d4293, 0xa304d906, 0x81201d28),
"BitmapThreshold",
"Cut off chanels at a certain value",
"Objects",
k3d::iplugin_factory::STABLE);
return factory;
}
private:
k3d_data_property(double, k3d::immutable_name, k3d::change_signal, k3d::with_undo, k3d::local_storage, k3d::no_constraint) m_red_threshold;
k3d_data_property(double, k3d::immutable_name, k3d::change_signal, k3d::with_undo, k3d::local_storage, k3d::no_constraint) m_green_threshold;
k3d_data_property(double, k3d::immutable_name, k3d::change_signal, k3d::with_undo, k3d::local_storage, k3d::no_constraint) m_blue_threshold;
k3d_data_property(double, k3d::immutable_name, k3d::change_signal, k3d::with_undo, k3d::local_storage, k3d::no_constraint) m_alpha_threshold;
double m_red_cache;
double m_green_cache;
double m_blue_cache;
double m_alpha_cache;
};
/////////////////////////////////////////////////////////////////////////////
// bitmap_threshold_factory
k3d::iplugin_factory& bitmap_threshold_factory()
{
return bitmap_threshold_implementation::get_factory();
}
} // namespace libk3dbitmap
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