/*****************************************************************************
* anchor.cpp
*****************************************************************************
* Copyright (C) 2003 the VideoLAN team
*
* Authors: Cyril Deguet <asmax@via.ecp.fr>
* Olivier Teulière <ipkiss@via.ecp.fr>
*
* 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#include "anchor.hpp"
bool Anchor::isHanging( const Anchor &rOther ) const
{
if( m_priority <= rOther.m_priority )
return false;
// Compute delta coordinates between anchors, since the Bezier class
// uses coordinates relative to (0;0)
int deltaX = getXPosAbs() - rOther.getXPosAbs();
int deltaY = getYPosAbs() - rOther.getYPosAbs();
// One of the anchors (at least) must be a point, else it has no meaning
return (isPoint() && rOther.m_rCurve.getMinDist( deltaX, deltaY ) == 0) ||
(rOther.isPoint() && m_rCurve.getMinDist( -deltaX, -deltaY ) == 0);
}
bool Anchor::canHang( const Anchor &rOther, int &xOffset, int &yOffset ) const
{
int deltaX = getXPosAbs() - (rOther.getXPosAbs() + xOffset);
int deltaY = getYPosAbs() - (rOther.getYPosAbs() + yOffset);
// One of the anchors (at least) must be a point, else it has no meaning
if( (isPoint() && rOther.m_rCurve.getMinDist( deltaX, deltaY ) < m_range) )
{
// Compute the coordinates of the nearest point of the curve
int xx, yy;
float p = rOther.m_rCurve.getNearestPercent( deltaX, deltaY );
rOther.m_rCurve.getPoint( p, xx, yy );
xOffset = getXPosAbs() - (rOther.getXPosAbs() + xx);
yOffset = getYPosAbs() - (rOther.getYPosAbs() + yy);
return true;
}
else if( (rOther.isPoint() &&
m_rCurve.getMinDist( -deltaX, -deltaY ) < m_range) )
{
// Compute the coordinates of the nearest point of the curve
int xx, yy;
float p = m_rCurve.getNearestPercent( -deltaX, -deltaY );
m_rCurve.getPoint( p, xx, yy );
xOffset = (getXPosAbs() + xx) - rOther.getXPosAbs();
yOffset = (getYPosAbs() + yy) - rOther.getYPosAbs();
return true;
}
else
{
return false;
}
}
¤ Dauer der Verarbeitung: 0.3 Sekunden
¤
*© Formatika GbR, Deutschland