K3dMath.cpp

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/***************************************************************************
 *   Copyright (C) 2007 by Jan Koci   *
 *   honza.koci@email.cz   *
 *   http://kengine.sourceforge.net/tutorial/
 *                                                                         *
 *   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.,                                       *
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 ***************************************************************************/


#include "K3dMath.h"

K3dMath::K3dMath()
{

}
K3dMath::~K3dMath()
{

}

bool K3dMath::EqualRange ( const float _f0, const float _f1, const float _fRange )
{
        float fDiff = _f1 - _f0;
        // Set positive difference
        if ( fDiff < 0 )
        {
                fDiff = -fDiff;
        }
        // If differce is on the range return true
        if ( fDiff <= _fRange )
        {
                return true;
        }
        return false;
}

//----------------------------------------------------------------------------
// explicit instantiation
//----------------------------------------------------------------------------

const float K3dMath::EPSILON = 1.192092896e-07F;
const float K3dMath::MAX_REAL = 3.402823466e+38F;
const float K3dMath::K_PI = ( float ) 3.1415926535897932384626433832795;/*(float)4.0*atanf((float)1.0);//*///
const float K3dMath::TWO_PI = ( float ) 6.283185307179586476925286766559;//2.0f*K3dMath::PI;
const float K3dMath::HALF_PI = ( float ) 1.5707963267948966192313216916398;//0.5f*K3dMath::PI;
const float K3dMath::QUARTER_PI = ( float ) 0.78539816339744830961566084581988;//0.25f*K3dMath::PI;
const float K3dMath::THREE_HALF_PI = ( float ) 4.7123889803846898576939650749193;//K3dMath::PI + K3dMath::HALF_PI;
const float K3dMath::INV_PI = ( float ) 0.31830988618379067153776752674503;//1.0f/K3dMath::PI;
const float K3dMath::INV_TWO_PI = ( float ) 0.15915494309189533576888376337251;//1.0f/K3dMath::TWO_PI;
const float K3dMath::K_DEG_TO_RAD = ( float ) 0.017453292519943295769236907684886;//K3dMath::PI/180.0f;
const float K3dMath::K_RAD_TO_DEG = ( float ) 57.295779513082320876798154814105;//180.0f/K3dMath::PI;
const float K3dMath::K_FI= ( float ) 1.618033988749894903;      

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