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mtarini 2004-03-16 03:08:17 +00:00
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/****************************************************************************
* VCGLib o o *
* Visual and Computer Graphics Library o o *
* _ O _ *
* Copyright(C) 2004 \/)\/ *
* Visual Computing Lab /\/| *
* ISTI - Italian National Research Council | *
* \ *
* All rights reserved. *
* *
* 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 (http://www.gnu.org/licenses/gpl.txt) *
* for more details. *
* *
****************************************************************************/
/****************************************************************************
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****************************************************************************/
#ifndef __VCGLIB_LINEAR
#define __VCGLIB_LINEAR
namespace vcg {
/*@{*/
/**
This class represents the common interface for any linear objects.
It consists (the declaration of) a set of functions and types that
each such object mush have.
Linear have the Zero element (neutral element for sums)
moltiplication (for a scalar), and two linear elements of
a given type can be summed.
In this way it is possible to interpolate between two different linear entities.
For example:
LinearType a,b,c,d,e,f;
...
d = a * 0.1 + b * 0.9;
e = a + (b - a) * 0.9;
*/
template <class T>
class Linear{
public:
typedef ScalarType;
inline void Zero();
T operator + ( T const & p) const;
T operator - ( T const & p) const;
T operator * ( const ScalarType );
T operator / ( const ScalarType ) const;
T & operator += ( T const & );
T & operator -= ( T const & );
T & operator *= ( const ScalarType );
T & operator /= ( const ScalarType );
T operator - () const;
};
};
#endif