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//-*-C++-*-
/*
**************************************************************************
description
--------------------
copyright : (C) 2002 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. *
* *
**************************************************************************/
#ifndef PMPOLYNOMEXPONENTS_H
#define PMPOLYNOMEXPONENTS_H
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <qptrlist.h>
#include <qvaluelist.h>
/**
* Helper class for the @ref PMPolynomBaseEdit widget
*/
class PMPolynomExponents
{
public:
/**
* All exponents are initialized with 0
*/
PMPolynomExponents( )
{
m_exponents[0] = m_exponents[1] = m_exponents[2] = 0;
}
/**
* The exponents are initialized with x, y, z
*/
PMPolynomExponents( int x, int y, int z )
{
m_exponents[0] = x;
m_exponents[1] = y;
m_exponents[2] = z;
}
/**
* Returns the ith exponent
*/
int exponent( int i ) const { return m_exponents[i]; }
/**
* Sets the ith exponent
*/
void setExponent( int i, int exp ) { m_exponents[i] = exp; }
/**
* Returns the x exponent
*/
int xExponent( ) const { return m_exponents[0]; }
/**
* Sets the x exponent
*/
void setXExponent( int exp ) { m_exponents[0] = exp; }
/**
* Returns the y exponent
*/
int yExponent( ) const { return m_exponents[1]; }
/**
* Sets the y exponent
*/
void setYExponent( int exp ) { m_exponents[1] = exp; }
/**
* Returns the z exponent
*/
int zExponent( ) const { return m_exponents[2]; }
/**
* Sets the z exponent
*/
void setZExponent( int exp ) { m_exponents[2] = exp; }
bool operator== ( const PMPolynomExponents& e ) const
{
return ( m_exponents[0] == e.m_exponents[0] ) &&
( m_exponents[1] == e.m_exponents[1] ) &&
( m_exponents[2] == e.m_exponents[2] );
}
bool operator!= ( const PMPolynomExponents& e ) const
{
return !( *this == e );
}
PMPolynomExponents& operator= ( const PMPolynomExponents& p )
{
m_exponents[0] = p.m_exponents[0];
m_exponents[1] = p.m_exponents[1];
m_exponents[2] = p.m_exponents[2];
return *this;
}
friend PMPolynomExponents operator+ ( const PMPolynomExponents& p1,
const PMPolynomExponents& p2 );
/**
* Returns the sum of the exponents
*/
int sum( ) const { return m_exponents[0] + m_exponents[1] + m_exponents[2]; }
private:
int m_exponents[3];
// static stuff
public:
/**
* Returns the exponents for a polynom with order n ( 2 <= n <= 7 )
*/
static QValueList<PMPolynomExponents>& polynom( int n );
private:
static QValueList<PMPolynomExponents> //...
recPolynom( const PMPolynomExponents& base, int xyz, int n, int rem );
static bool m_created[6];
static QValueList<PMPolynomExponents> m_lists[6];
};
#endif
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