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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_composite_simple.h"
namespace libk3dbitmap
{
/////////////////////////////////////////////////////////////////////////////
// bitmap_image_atop_implementation
class bitmap_image_atop_implementation :
public bitmap_composite_simple
{
typedef bitmap_composite_simple base;
public:
bitmap_image_atop_implementation(k3d::idocument& Document) :
base(Document)
{
}
void on_value_change() {}
void on_composite(const k3d::pixel& A, const k3d::pixel& B, k3d::pixel& O)
{
double mat = B.alpha;
double invmat = k3d::pixel::sample_traits::invert(A.alpha);
O.red = (A.red * mat) + (invmat * B.red);
O.green = (A.green * mat) + (invmat * B.green);
O.blue = (A.blue * mat) + (invmat * B.blue);
O.alpha = (A.alpha * mat) + (invmat * B.alpha);
}
k3d::iplugin_factory& factory()
{
return get_factory();
}
static k3d::iplugin_factory& get_factory()
{
static k3d::plugin_factory<
k3d::document_plugin<bitmap_image_atop_implementation>,
k3d::interface_list<k3d::ibitmap_source,
k3d::interface_list<k3d::ibitmap_sink> > > factory(
k3d::uuid(0xb33ad57a, 0x7df5452f, 0x8654d2df, 0x5c0d295a),
"BitmapImageAtop",
"Similar to over, but the background matte is used",
"Objects",
k3d::iplugin_factory::STABLE);
return factory;
}
};
/////////////////////////////////////////////////////////////////////////////
// bitmap_image_atop_factory
k3d::iplugin_factory& bitmap_image_atop_factory()
{
return bitmap_image_atop_implementation::get_factory();
}
} // namespace libk3dbitmap
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