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