torcs - 1.2.2

src/modules/simu/simuv2.sav/SOLID-2.0/include/3D/Basic.h

Go to the documentation of this file.
00001 /*
00002   3D - C++ Class Library for 3D Transformations
00003   Copyright (C) 1996-1998  Gino van den Bergen
00004 
00005   This library is free software; you can redistribute it and/or
00006   modify it under the terms of the GNU Library General Public
00007   License as published by the Free Software Foundation; either
00008   version 2 of the License, or (at your option) any later version.
00009 
00010   This library is distributed in the hope that it will be useful,
00011   but WITHOUT ANY WARRANTY; without even the implied warranty of
00012   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013   Library General Public License for more details.
00014 
00015   You should have received a copy of the GNU Library General Public
00016   License along with this library; if not, write to the Free
00017   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00018 
00019   Please send remarks, questions and bug reports to gino@win.tue.nl,
00020   or write to:
00021                   Gino van den Bergen
00022                   Department of Mathematics and Computing Science
00023                   Eindhoven University of Technology
00024                   P.O. Box 513, 5600 MB Eindhoven, The Netherlands
00025 */
00026 
00027 #ifndef _BASIC_H_
00028 #define _BASIC_H_
00029 
00030 #include <math.h>
00031 #include <stdlib.h>
00032 
00033 /* typedef double Scalar; */
00034 #define Scalar double
00035 
00036 const Scalar DEGS_PER_RAD = 57.29577951308232286465;
00037 const Scalar RADS_PER_DEG =  0.01745329251994329547;
00038 const Scalar TWO_PI =        6.28318530717958623200;
00039 const Scalar EPSILON =       1.0e-10;
00040 const Scalar EPSILON2 =      1.0e-20;
00041 const Scalar INFINITY_ =      1.0e50;
00042 
00043 
00044 /* inline Scalar abs(Scalar x) { return x < 0 ? -x : x; } */
00045 inline Scalar rnd() { return (Scalar(rand()) + 0.5) / (Scalar(RAND_MAX) + 1); }
00046 inline int    sgn(Scalar x) { return x < 0 ? -1 : x > 0 ? 1 : 0; }
00047 inline bool   eqz(Scalar x) { return fabs(x) <= EPSILON; }
00048 
00049 inline Scalar min(Scalar x, Scalar y) { return x > y ? y : x; }
00050 inline Scalar max(Scalar x, Scalar y) { return x < y ? y : x; }
00051 
00052 inline void set_min(Scalar& x, Scalar y) { if (x > y) x = y; }
00053 inline void set_max(Scalar& x, Scalar y) { if (x < y) x = y; }
00054 
00055 inline Scalar rads(Scalar x) { return x * RADS_PER_DEG; }
00056 inline Scalar degs(Scalar x) { return x * DEGS_PER_RAD; }
00057 
00058 enum { X = 0, Y = 1, Z = 2, W = 3 };
00059 
00060 #endif

Generated at Thu Feb 26 21:52:30 2004 for torcs by doxygen 1.3.3 written by Dimitri van Heesch, © 1997-1999
TORCS © Eric Espié 1999, 2002.