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/* ========================================================================
* PROJECT: ARToolKitPlus
* ========================================================================
* This work is based on the original ARToolKit developed by
* Hirokazu Kato
* Mark Billinghurst
* HITLab, University of Washington, Seattle
* http://www.hitl.washington.edu/artoolkit/
*
* Copyright of the derived and new portions of this work
* (C) 2006 Graz University of Technology
*
* This framework 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 framework 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 framework; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* For further information please contact
* Dieter Schmalstieg
* <schmalstieg@icg.tu-graz.ac.at>
* Graz University of Technology,
* Institut for Computer Graphics and Vision,
* Inffeldgasse 16a, 8010 Graz, Austria.
* ========================================================================
** @author Daniel Wagner
*
* $Id$
* @file
* ======================================================================== */
#ifndef __FIXEDPOINT_HEADERFILE__
#define __FIXEDPOINT_HEADERFILE__
namespace ARToolKitPlus {
#define FIXED_Float_To_Fixed_n(x, n) ((I32)(x * (float)(1 << n) + 0.5f))
#define FIXED_Fixed_n_To_Float(x, n) ((float)x / (float)(1 << n))
#ifdef _USEGPP_
# include <gpp.h>
# define _USE_GPP_ARITHMETIC_
# define _USE_GPP_TRIGONOMETRIC_
# define _USE_GPP_VECTOR_
# define _FIXEDPOINT_MATH_ACTIVATED_
// autolink against Intel GPP
# ifdef DEBUG
# pragma comment( lib, "gpp_WMMX40_d.lib" )
# else
# pragma comment( lib, "gpp_WMMX40_r.lib" )
# endif
#endif
#ifdef _USEFIXED_
# if defined(_WIN32) || defined(WIN32)
typedef unsigned __int64 U64;
typedef __int64 I64;
typedef unsigned int U32;
typedef int I32;
# endif
# define _USE_GENERIC_ARITHMETIC_
# define _USE_GENERIC_TRIGONOMETRIC_
# define _USE_GENERIC_VECTOR_
# define _FIXEDPOINT_MATH_ACTIVATED_
#endif
#ifdef _USE_GPP_ARITHMETIC_
#define FIXED_MUL2(a,b, res, bits) \
gppMul_n_32s((a), (b), &res, bits);
#define FIXED_MUL3(a,b,c, res, bits) \
gppMul_n_32s((a), (b), &_tmp1, bits); \
gppMul_n_32s(_tmp1, (c), &res, bits);
#define FIXED_MUL4(a,b,c,d, res, bits) \
gppMul_n_32s((a), (b), &_tmp1, bits); \
gppMul_n_32s(_tmp1, (c), &_tmp2, bits); \
gppMul_n_32s(_tmp2, (d), &res, bits);
#define FIXED_DIV2(a,b, res, bits) \
gppDiv_n_32s((a), (b), &res, bits);
#endif //_USE_GPP_ARITHMETIC_
#ifdef _USE_GPP_TRIGONOMETRIC_
#define FIXED_SIN(theta, sin_theta, n) \
gppSinHP_n_32s((theta), sin_theta, n);
#define FIXED_COS(theta, cos_theta, n) \
gppCosHP_n_32s((theta), cos_theta, n);
#define FIXED_SINCOS(theta, sin_theta, cos_theta, n) \
gppSinCosHP_n_32s((theta), sin_theta, cos_theta, n);
#endif // _USE_GPP_TRIGONOMETRIC_
#ifdef _USE_GPP_VECTOR_
typedef GPP_VEC3D FIXED_VEC3D;
#define FIXED_VEC3_DOT(vec1, vec2, res, n) \
gppVec3DDot_n_32s((vec1), (vec2), (res), (n));
#define FIXED_VEC3_SUB(vec1, vec2, res) \
gppVec3DSub_n_32s((vec1), (vec2), (res));
#define FIXED_VEC3_LENGTH_SQ(vec, res, n) \
gppVec3DLengthSq_n_32s((vec), (res), (n));
#endif // _USE_GPP_VECTOR_
#ifdef _USE_GENERIC_ARITHMETIC_
# define FIXED_MUL2(a,b, res, bits) \
res = ((I32) (((I64)a * (I64)b) >> bits));
# define FIXED_MUL3(a,b,c, res, bits) \
FIXED_MUL2((a), (b), (res), bits); \
FIXED_MUL2((res), (c), (res), bits);
# define FIXED_MUL4(a,b,c,d, res, bits) \
FIXED_MUL2((a), (b), (res), bits); \
FIXED_MUL2((res), (c), (res), bits); \
FIXED_MUL2((res), (d), (res), bits);
# define FIXED_DIV2(a,b, res, bits) \
res = (I32) ((((I64)a)<<bits)/(I64)b);
#endif //_USE_GENERIC_ARITHMETIC_
#ifdef _USE_GENERIC_TRIGONOMETRIC_
void Fixed28_Init();
void Fixed28_Deinit();
inline void Fixed28_SinCos(I32 phi, I32 &sin, I32 &cos);
#define FIXED_SINCOS(theta, sin_theta, cos_theta, n) \
Fixed28_SinCos((theta), *(sin_theta), *(cos_theta));
#endif //_USE_GENERIC_TRIGONOMETRIC_
#ifdef _USE_GENERIC_VECTOR_
typedef struct{
I32 x, y, z;
} FIXED_VEC3D;
inline void FIXED_VEC3_DOT(FIXED_VEC3D* vec1, FIXED_VEC3D* vec2, I32* res, I32 n)
{
I32 x,y,z;
FIXED_MUL2(vec1->x, vec2->x, x, n);
FIXED_MUL2(vec1->y, vec2->y, y, n);
FIXED_MUL2(vec1->z, vec2->z, z, n);
*res = x+y+z;
}
inline void FIXED_VEC3_SUB(FIXED_VEC3D* vec1, FIXED_VEC3D* vec2, FIXED_VEC3D* res)
{
res->x = vec1->x - vec2->x;
res->y = vec1->y - vec2->y;
res->z = vec1->z - vec2->z;
}
inline void FIXED_VEC3_LENGTH_SQ(FIXED_VEC3D* vec, U32* res, I32 n)
{
I32 x,y,z;
FIXED_MUL2(vec->x, vec->x, x, n);
FIXED_MUL2(vec->y, vec->y, y, n);
FIXED_MUL2(vec->z, vec->z, z, n);
*res = x+y+z;
}
#endif //_USE_GENERIC_VECTOR_
} // namespace ARToolKitPlus
#endif //__FIXEDPOINT_HEADERFILE__
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