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// -*- c-basic-offset: 4 -*-
/*
Rosegarden
A sequencer and musical notation editor.
This program is Copyright 2000-2008
Guillaume Laurent <glaurent@telegraph-road.org>,
Chris Cannam <cannam@all-day-breakfast.com>,
Richard Bown <bownie@bownie.com>
The moral right of the authors to claim authorship of this work
has been asserted.
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. See the file
COPYING included with this distribution for more information.
*/
#ifndef _EQUATION_H_
#define _EQUATION_H_
namespace Rosegarden {
/**
* Equation solving helper class
*/
class Equation
{
public:
enum Unknown { Y, M, X, C };
struct Point {
Point(int xx, int yy) : x(xx), y(yy) { }
int x;
int y;
};
static void solve(Unknown u, double &y, double &m, double &x, double &c);
static void solve(Unknown u, int &y, double &m, int &x, int &c);
static void solveForYByEndPoints(Point a, Point b, double x, double &y);
static void solveForYByEndPoints(Point a, Point b, int x, int &y);
};
}
#endif
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