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/* ------------------------------------------------------------------------
* $Id: Line.hh,v 1.2 2001/07/31 11:50:39 elm Exp $
*
* This file is part of 3Dwm: The Three-Dimensional User Environment.
*
* 3Dwm: The Three-Dimensional User Environment:
* <http://www.3dwm.org>
*
* Chalmers Medialab
* <http://www.medialab.chalmers.se>
*
* ------------------------------------------------------------------------
* File created 2001-07-27 by Niklas Elmqvist.
*
* Copyright (c) 2001 Niklas Elmqvist <elm@3dwm.org>.
* ------------------------------------------------------------------------
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
* ------------------------------------------------------------------------
*/
#ifndef _Line_hh_
#define _Line_hh_
/**
* General line class.
**/
template <class T> class Line {
public:
/**
* Constructor.
*
* @param
**/
Line(const T &p1, const T &p2) : _p(p1) {
_direction = p2 - p1;
//_direction.normalize();
}
/**
* Retrieve the defining point on the line.
*
* @return const reference to the starting point of the line.
**/
const T &p() const { return _p; }
/**
* Retrieve the line's direction vector (normalized).
*
* @return const reference to the line's direction vector.
**/
const T &getDirection() const {
return _direction;
}
/**
* Scalar multiplication operator. Accepts a parametric variable
* and computes the vector for the desired point on the line
* starting from the defining point p().
*
* @return vector for the desired point.
**/
T operator * (float t) {
return _p + t * _direction;
}
private:
T _p, _direction;
};
#endif /* Line.hh */
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