/* === S Y N F I G ========================================================= */
/*! \file ducktransform_rotate.h
** \brief Template Header
**
** $Id$
**
** \legal
** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
**
** This package 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 package 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.
** \endlegal
*/
/* ========================================================================= */
/* === S T A R T =========================================================== */
#ifndef __SYNFIG_STUDIO_DUCK_TRANSFORM_ROTATE_H
#define __SYNFIG_STUDIO_DUCK_TRANSFORM_ROTATE_H
/* === H E A D E R S ======================================================= */
#include "duckmatic.h"
#include <synfig/angle.h>
/* === M A C R O S ========================================================= */
/* === T Y P E D E F S ===================================================== */
/* === C L A S S E S & S T R U C T S ======================================= */
namespace studio {
class Transform_Rotate : public synfig::Transform
{
private:
//synfig::Angle angle;
synfig::Vector origin;
synfig::Real sin_val;
synfig::Real cos_val;
public:
Transform_Rotate(const synfig::GUID& guid, const synfig::Angle& angle,const synfig::Vector& origin=synfig::Vector(0,0)):
Transform(guid),
//angle(angle),
origin(origin),
sin_val(synfig::Angle::sin(angle).get()),
cos_val(synfig::Angle::cos(angle).get())
{
}
synfig::Vector perform(const synfig::Vector& x)const
{
synfig::Point pos(x-origin);
return synfig::Point(cos_val*pos[0]-sin_val*pos[1],sin_val*pos[0]+cos_val*pos[1])+origin;
}
synfig::Vector unperform(const synfig::Vector& x)const
{
synfig::Point pos(x-origin);
return synfig::Point(cos_val*pos[0]+sin_val*pos[1],-sin_val*pos[0]+cos_val*pos[1])+origin;
}
synfig::String get_string()const
{
return "duck rotate";
}
};
};
/* === E N D =============================================================== */
#endif