Adding base.h

This commit is contained in:
Federico Ponchio 2004-02-09 13:32:16 +00:00
parent 24cd6edda1
commit 04afe4c81e
1 changed files with 120 additions and 0 deletions

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/*****************************************************************************
* VCGLib *
* *
* Visual Computing Group o> *
* IEI Institute, CNUCE Institute, CNR Pisa <| *
* / \ *
* Copyright(C) 1999 by Paolo Cignoni, Claudio Rocchini *
* All rights reserved. *
* *
* 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. the author makes no representations about the suitability *
* of this software for any purpose. It is provided "as is" without express *
* or implied warranty. *
* *
*****************************************************************************/
/****************************************************************************
History
1999 Feb 02 First Draft.
1999 May 15 Corrected Scope of sqrt.. (added ::)
2000 Jan 26 inserito include condizionale
corretto Distance() e init()
Jan 28 aggiunti Sin e Cos (per quaternion!) (con assert se uno li usa con int!)
Jun 26 Aggiunto Gauss33 (prima stava in lfield3)
Nota: era stato scritto con Fabs invece di Abs....
Jun 30 Aggiunto TRACE e Definizione M_PI
Jul 4 aggiunto un cast a FL_TYPE in Gauss33;
5 Tolti i parametri inutili (warning 4100)
6 Aggiunto include assert.h
2001 Jul 17 TRACE Release compilabile in unix (CR)
2002 Jan 17 Aggiunte conversioni Radianti in Gradi
Feb 27 Aggiunto tipo per Generica funzione di Callback
Jul 28 Aggiunta seconda callback (utile per progress bar) (pc)
2003 Jan 09 Aggiunta Clamp (pc)
2003 Jan 17 Aggiunta MaxVal (mt)
Sep 10 [BCB] Ridefinite sqrtf e fabsf per C++ Builder
19 Aggiunto suffisso 'u' per evitare un warning (pc)
****************************************************************************/
#ifndef __VCGLIB_MATH_BASE
#define __VCGLIB_MATH_BASE
#include <math.h>
#include <assert.h>
#ifdef __BORLANDC__
float sqrtf (float v) {return sqrt(v);}
float fabsf (float v) {return fabs(v);}
#endif
namespace vcg {
template<class T> class Math
{
public:
static T inline Sqrt(const T v);
static T inline Abs(const T v);
static const T MaxVal;
static T ToDeg(const T &a);
static T ToRad(const T &a);
// Unspecialized members
T Clamp( const T & val, const T& minval, const T& maxval);
class MagnitudoComparer
{
public:
inline bool operator() ( const T a, const T b ) { return fabs(a)>fabs(b); }
};
};
float Math<float>::Sqrt(const float v)
{ return sqrtf(v); }
float Math<float>::Abs(const float v)
{ return fabsf(v); }
double Math<double>::Sqrt(const double v)
{ return sqrt(v); }
double Math<double>::Abs(const double v)
{ return fabs(v); }
const unsigned char Math<unsigned char >::MaxVal = 255;
const char Math<char >::MaxVal = 127;
const unsigned short Math<unsigned short >::MaxVal = 0xFFFFu;
const short Math<short >::MaxVal = 0x7FFF;
const float Math<float >::MaxVal = 3.4E38F;
const int Math<int >::MaxVal = 2147483647;
const long double Math<long double >::MaxVal = 1.2E308;
const double Math<double >::MaxVal = 1.7E308;
const __int64 Math<__int64 >::MaxVal = 9223372036854775807;
/* Some <math.h> files do not define M_PI... */
#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif
template <class SCALAR>
inline SCALAR Math<SCALAR>::Clamp( const SCALAR & val, const SCALAR& minval, const SCALAR& maxval)
{
if(val < minval) return minval;
if(val > maxval) return maxval;
return val;
}
inline float Math<float>::ToDeg(const float &a){return a*180.0f/float(M_PI);}
inline float Math<float>::ToRad(const float &a){return float(M_PI)*a/180.0f;}
inline double Math<double>::ToDeg(const double &a){return a*180.0/M_PI;}
inline double Math<double>::ToRad(const double &a){return M_PI*a/180.0;}
} // End namespace
#endif