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93 lines
3.1 KiB
93 lines
3.1 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 "pmdistancecontrolpoint.h"
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#include "pmmath.h"
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#include "pmdebug.h"
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#include <math.h>
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PMDistanceControlPoint::PMDistanceControlPoint( PMControlPoint* base,
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const PMVector& direction, double distance,
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int id, const TQString& description,
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bool showExtraLine )
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: PMControlPoint( id, description )
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{
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m_distance = distance;
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m_pBasePoint = base;
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m_direction = direction;
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m_directionLength = direction.abs( );
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m_extraLine = showExtraLine;
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}
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PMDistanceControlPoint::PMDistanceControlPoint( const PMVector& base,
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const PMVector& direction, double distance,
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int id, const TQString& description,
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bool showExtraLine )
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: PMControlPoint( id, description )
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{
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m_distance = distance;
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m_constBasePoint = base;
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m_pBasePoint = 0;
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m_direction = direction;
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m_directionLength = direction.abs( );
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m_extraLine = showExtraLine;
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}
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PMVector PMDistanceControlPoint::position( ) const
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{
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if( m_pBasePoint )
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return m_pBasePoint->position( ) + m_direction * m_distance;
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return m_constBasePoint + m_direction * m_distance;
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}
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PMVector PMDistanceControlPoint::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 PMDistanceControlPoint::setDirection( const PMVector& direction )
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{
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m_direction = direction;
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m_directionLength = direction.abs( );
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}
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void PMDistanceControlPoint::graphicalChangeStarted( )
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{
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m_originalDistance = m_distance;
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}
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void PMDistanceControlPoint::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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if( !approxZero( m_directionLength ) )
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m_distance = m_originalDistance +
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PMVector::dot( endPoint - startPoint, m_direction )
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/ ( m_directionLength * m_directionLength );
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}
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void PMDistanceControlPoint::snapToGrid( )
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{
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double d = moveGrid( );
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if( !approxZero( d ) )
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m_distance = rint( m_distance / d ) * d;
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setChanged( );
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}
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