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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file moto/include/MT_Scalar.h
* \ingroup moto
*/
/*
* Copyright (c) 2000 Gino van den Bergen <gino@acm.org>
*
* Permission to use, copy, modify, distribute and sell this software
* and its documentation for any purpose is hereby granted without fee,
* provided that the above copyright notice appear in all copies and
* that both that copyright notice and this permission notice appear
* in supporting documentation. Gino van den Bergen makes no
* representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
*/
#ifndef MT_SCALAR_H
#define MT_SCALAR_H
#include <math.h>
#include <float.h>
#include "MT_random.h"
typedef float MT_Scalar;
const MT_Scalar MT_DEGS_PER_RAD(57.29577951308232286465);
const MT_Scalar MT_RADS_PER_DEG(0.01745329251994329547);
const MT_Scalar MT_PI(3.14159265358979323846);
const MT_Scalar MT_2_PI(6.28318530717958623200);
const MT_Scalar MT_EPSILON(1.0e-10);
const MT_Scalar MT_EPSILON2(1.0e-20);
const MT_Scalar MT_INFINITY(1.0e50);
inline int MT_sign(MT_Scalar x) {
return x < 0.0f ? -1 : x > 0.0f ? 1 : 0;
}
inline MT_Scalar MT_abs(MT_Scalar x) { return fabs(x); }
inline bool MT_fuzzyZero(MT_Scalar x) { return MT_abs(x) < (float)MT_EPSILON; }
inline bool MT_fuzzyZero2(MT_Scalar x) { return MT_abs(x) < (float)MT_EPSILON2; }
inline MT_Scalar MT_radians(MT_Scalar x) {
return x * (float)MT_RADS_PER_DEG;
}
inline MT_Scalar MT_degrees(MT_Scalar x) {
return x * (float)MT_DEGS_PER_RAD;
}
inline MT_Scalar MT_random() {
return MT_Scalar(MT_rand()) / MT_Scalar(MT_RAND_MAX);
}
inline MT_Scalar MT_clamp(const MT_Scalar x, const MT_Scalar min, const MT_Scalar max)
{
if (x < min)
return min;
else if (x > max)
return max;
return x;
}
#endif
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