94 lines
2.7 KiB
C
94 lines
2.7 KiB
C
/**
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* $Id$
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
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* All rights reserved.
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*
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* The Original Code is: all of this file.
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*
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* Contributor(s): none yet.
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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/*
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* Copyright (c) 2000 Gino van den Bergen <gino@acm.org>
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*
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* Permission to use, copy, modify, distribute and sell this software
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* and its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and
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* that both that copyright notice and this permission notice appear
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* in supporting documentation. Gino van den Bergen makes no
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* representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*
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*/
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#ifndef MT_SCALAR_H
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#define MT_SCALAR_H
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#include <math.h>
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#include <float.h>
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#include "MT_random.h"
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#include "NM_Scalar.h"
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typedef double MT_Scalar; //this should be float !
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const MT_Scalar MT_DEGS_PER_RAD(57.29577951308232286465);
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const MT_Scalar MT_RADS_PER_DEG(0.01745329251994329547);
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const MT_Scalar MT_PI(3.14159265358979323846);
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const MT_Scalar MT_2_PI(6.28318530717958623200);
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const MT_Scalar MT_EPSILON(1.0e-10);
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const MT_Scalar MT_EPSILON2(1.0e-20);
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const MT_Scalar MT_INFINITY(1.0e50);
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inline int MT_sign(MT_Scalar x) {
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return x < 0.0 ? -1 : x > 0.0 ? 1 : 0;
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}
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inline MT_Scalar MT_abs(MT_Scalar x) { return fabs(x); }
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inline bool MT_fuzzyZero(MT_Scalar x) { return MT_abs(x) < MT_EPSILON; }
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inline bool MT_fuzzyZero2(MT_Scalar x) { return MT_abs(x) < MT_EPSILON2; }
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inline MT_Scalar MT_radians(MT_Scalar x) {
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return x * MT_RADS_PER_DEG;
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}
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inline MT_Scalar MT_degrees(MT_Scalar x) {
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return x * MT_DEGS_PER_RAD;
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}
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inline MT_Scalar MT_random() {
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return MT_Scalar(MT_rand()) / MT_Scalar(MT_RAND_MAX);
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}
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inline MT_Scalar MT_clamp(const MT_Scalar x, const MT_Scalar min, const MT_Scalar max)
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{
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if (x < min)
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return min;
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else if (x > max)
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return max;
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return x;
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}
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#endif
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