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/* === S Y N F I G ========================================================= */
/*! \file blinepoint.cpp
** \brief Template File
**
** $Id$
**
** \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
*/
/* ========================================================================= */
/* === H E A D E R S ======================================================= */
#ifdef USING_PCH
# include "pch.h"
#else
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "blinepoint.h"
#endif
/* === U S I N G =========================================================== */
using namespace std;
using namespace synfig;
/* === M A C R O S ========================================================= */
/* === G L O B A L S ======================================================= */
/* === P R O C E D U R E S ================================================= */
/* === M E T H O D S ======================================================= */
void
synfig::BLinePoint::reverse()
{
if(split_tangent_both_)
{
std::swap(tangent_[0],tangent_[1]);
tangent_[0]=-tangent_[0];
tangent_[1]=-tangent_[1];
}
else
if(merge_tangent_both_)
{
tangent_[0]=-tangent_[0];
tangent_[1]=-tangent_[1];
}
else
if(split_tangent_radius_)
{
Real mag0 = tangent_[0].mag(), mag1 = tangent_[1].mag();
tangent_[0]=Vector(-mag1, mag0==0?Angle::rad(0):tangent_[0].angle());
tangent_[1]=Vector(-mag0, mag1==0?Angle::rad(0):tangent_[1].angle());
update_tangent2();
}
else
{
Real mag0 = tangent_[0].mag(), mag1 = tangent_[1].mag();
Angle angle0 = mag0==0?Angle::rad(0):tangent_[0].angle();
tangent_[0]=Vector(-mag0, mag1==0?Angle::rad(0):tangent_[1].angle());
tangent_[1]=Vector(-mag1, angle0);
update_tangent2();
}
}
void
synfig::BLinePoint::update_tangent2()
{
if(approximate_zero(tangent_[0].mag_squared()))
tangent2_radius_split_=tangent_[1];
else
tangent2_radius_split_=Vector(tangent_[1].mag(), tangent_[0].angle());
tangent2_angle_split_=Vector(tangent_[0].mag(), tangent_[1].angle());
return;
}
void
synfig::BLinePoint::update_flags()
{
split_tangent_both_= split_tangent_radius_ && split_tangent_angle_;
merge_tangent_both_= !split_tangent_radius_ && !split_tangent_angle_;
}
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