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90 lines
2.8 KiB
90 lines
2.8 KiB
/*
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**************************************************************************
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description
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--------------------
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copyright : (C) 2000-2001 by Andreas Zehender
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email : zehender@kde.org
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**************************************************************************
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**************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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**************************************************************************/
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#include "pmvectorcontrolpoint.h"
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#include "pmmath.h"
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#include <math.h>
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PMVectorControlPoint::PMVectorControlPoint( PMControlPoint* base,
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const PMVector& v, int id,
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const TQString& description,
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bool extraLine, bool normalize )
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: PMControlPoint( id, description )
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{
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m_vector = v;
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m_pBasePoint = base;
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m_extraLine = extraLine;
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m_normalize = normalize;
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}
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PMVectorControlPoint::PMVectorControlPoint( const PMVector& base,
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const PMVector& v, int id,
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const TQString& description,
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bool extraLine, bool normalize )
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: PMControlPoint( id, description )
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{
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m_vector = v;
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m_constBasePoint = base;
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m_pBasePoint = 0;
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m_extraLine = extraLine;
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m_normalize = normalize;
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}
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PMVector PMVectorControlPoint::position( ) const
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{
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return basePoint( ) + m_vector;
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}
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PMVector PMVectorControlPoint::basePoint( ) const
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{
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if( m_pBasePoint )
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return m_pBasePoint->position( );
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return m_constBasePoint;
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}
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void PMVectorControlPoint::graphicalChangeStarted( )
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{
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m_originalVector = m_vector;
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}
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void PMVectorControlPoint::graphicalChange( const PMVector& startPoint,
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const PMVector& /*viewNormal*/,
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const PMVector& endPoint )
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{
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double d;
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m_vector = m_originalVector + endPoint - startPoint;
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if( m_normalize )
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{
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d = m_vector.abs( );
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if( approxZero( d ) )
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m_vector = m_originalVector;
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else
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m_vector /= d;
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}
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}
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void PMVectorControlPoint::snapToGrid( )
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{
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int i;
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double d = moveGrid( );
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if( !approxZero( d ) )
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for( i = 0; i < 3; i++ )
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m_vector[i] = rint( m_vector[i] / d ) * d;
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setChanged( );
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}
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