155 lines
2.7 KiB
C++
155 lines
2.7 KiB
C++
/*
|
|
----
|
|
This file is part of SECONDO.
|
|
|
|
Copyright (C) 2008, University in Hagen, Department of Computer Science,
|
|
Database Systems for New Applications.
|
|
|
|
SECONDO 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.
|
|
|
|
SECONDO 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 for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with SECONDO; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
----
|
|
|
|
//paragraph [1] Title: [{\Large \bf \begin {center}] [\end {center}}]
|
|
//[TOC] [\tableofcontents]
|
|
//[ue] [\"u]
|
|
//[ae] [\"a]
|
|
//[oe] [\"o]
|
|
//[x] [$\times $]
|
|
//[->] [$\rightarrow $]
|
|
//[pow] [\verb+^+]
|
|
|
|
[1] Headerfile
|
|
|
|
Oktober 2014 - Maerz 2015, S. Schroeer for master thesis.
|
|
|
|
[TOC]
|
|
|
|
1 Introduction
|
|
|
|
2 Defines and Includes
|
|
|
|
*/
|
|
|
|
#ifndef ANGLE_H_
|
|
#define ANGLE_H_
|
|
|
|
#include <gmpxx.h>
|
|
#include "Vector2D.h"
|
|
|
|
namespace temporalalgebra{
|
|
|
|
namespace mregionops2 {
|
|
|
|
class Angle
|
|
{
|
|
public:
|
|
|
|
Angle()
|
|
{
|
|
angle = Infinite;
|
|
}
|
|
|
|
Angle(mpq_class a)
|
|
{
|
|
angle = a;
|
|
Normalize();
|
|
}
|
|
|
|
Angle(Vector2D v)
|
|
{
|
|
|
|
// use sin2 = y2 / (x2+y2)
|
|
// sin is a reelle number, not exact
|
|
mpq_class xSquare = v.GetX() * v.GetX();
|
|
mpq_class ySquare = v.GetY() * v.GetY();
|
|
|
|
if (v.GetX() >= 0)
|
|
{
|
|
if (v.GetY() >= 0)
|
|
{
|
|
// Quadrant 1
|
|
angle = ySquare / (xSquare + ySquare);
|
|
}
|
|
else
|
|
{
|
|
// Quadrant 4
|
|
angle = 3 + xSquare / (xSquare + ySquare);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (v.GetY() >= 0)
|
|
{
|
|
// Quadrant 2
|
|
angle = 1 + xSquare / (xSquare + ySquare);
|
|
}
|
|
else
|
|
{
|
|
// Quadrant 3
|
|
angle = 2 + ySquare / (xSquare + ySquare);
|
|
}
|
|
}
|
|
}
|
|
|
|
Angle GetOpposite();
|
|
|
|
inline bool operator <(Angle& a) {
|
|
|
|
if (angle < a.angle) return true;
|
|
return false;
|
|
}
|
|
|
|
inline Angle operator -(Angle& a) {
|
|
|
|
mpq_class diff = angle - a.angle;
|
|
if (diff < 0) diff = diff + 4;
|
|
return Angle(diff);
|
|
}
|
|
|
|
inline mpq_class GetAngle()
|
|
{
|
|
return angle;
|
|
}
|
|
|
|
inline bool IsZero()
|
|
{
|
|
return angle == 0;
|
|
}
|
|
|
|
|
|
inline bool IsInfinite()
|
|
{
|
|
return angle == Infinite;
|
|
}
|
|
|
|
private:
|
|
|
|
const static int Maxvalue = 4;
|
|
|
|
// is infinite
|
|
const static int Infinite = Maxvalue + 1;
|
|
void Normalize();
|
|
|
|
mpq_class angle;
|
|
|
|
};
|
|
|
|
std::ostream& operator <<(std::ostream& o, Angle& a);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|