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/*
**************************************************************************
description
--------------------
copyright : (C) 2000-2001 by Andreas Zehender
email : zehender@kde.org
**************************************************************************
**************************************************************************
* *
* 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. *
* *
**************************************************************************/
#include "pmvectorcontrolpoint.h"
#include "pmmath.h"
#include <math.h>
PMVectorControlPoint::PMVectorControlPoint( PMControlPoint* base,
const PMVector& v, int id,
const QString& description,
bool extraLine, bool normalize )
: PMControlPoint( id, description )
{
m_vector = v;
m_pBasePoint = base;
m_extraLine = extraLine;
m_normalize = normalize;
}
PMVectorControlPoint::PMVectorControlPoint( const PMVector& base,
const PMVector& v, int id,
const QString& description,
bool extraLine, bool normalize )
: PMControlPoint( id, description )
{
m_vector = v;
m_constBasePoint = base;
m_pBasePoint = 0;
m_extraLine = extraLine;
m_normalize = normalize;
}
PMVector PMVectorControlPoint::position( ) const
{
return basePoint( ) + m_vector;
}
PMVector PMVectorControlPoint::basePoint( ) const
{
if( m_pBasePoint )
return m_pBasePoint->position( );
return m_constBasePoint;
}
void PMVectorControlPoint::graphicalChangeStarted( )
{
m_originalVector = m_vector;
}
void PMVectorControlPoint::graphicalChange( const PMVector& startPoint,
const PMVector& /*viewNormal*/,
const PMVector& endPoint )
{
double d;
m_vector = m_originalVector + endPoint - startPoint;
if( m_normalize )
{
d = m_vector.abs( );
if( approxZero( d ) )
m_vector = m_originalVector;
else
m_vector /= d;
}
}
void PMVectorControlPoint::snapToGrid( )
{
int i;
double d = moveGrid( );
if( !approxZero( d ) )
for( i = 0; i < 3; i++ )
m_vector[i] = rint( m_vector[i] / d ) * d;
setChanged( );
}
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