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/*==LICENSE==*
CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011 Cyan Worlds, Inc.
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 3 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, see <http://www.gnu.org/licenses/>.
You can contact Cyan Worlds, Inc. by email legal@cyan.com
or by snail mail at:
Cyan Worlds, Inc.
14617 N Newport Hwy
Mead, WA 99021
*==LICENSE==*/
#ifndef hsScalarMacrosDefined
#define hsScalarMacrosDefined
#include "hsFixedTypes.h"
#ifndef HS_SCALAR_IS_FLOAT
#define HS_SCALAR_IS_FIXED 0
#define HS_SCALAR_IS_FLOAT 1
#define HS_NEVER_USE_FLOAT 0
#endif
#if HS_SCALAR_IS_FLOAT && HS_NEVER_USE_FLOAT
#error "can't define HS_SCALAR_IS_FLOAT and HS_NEVER_USE_FLOAT"
#endif
#if HS_SCALAR_IS_FLOAT
#include <math.h>
#endif
#define hsScalarDegToRad(deg) hsScalarMul(deg, hsScalarPI / 180)
#define hsScalarRadToDeg(rad) hsScalarMul(rad, 180 / hsScalarPI)
#if HS_SCALAR_IS_FIXED
typedef hsFixed hsScalar;
#define hsScalar1 hsFixed1
#define hsScalarHalf (hsFixed1 >> 1)
#define hsScalarPI (hsFixedPI)
#define hsScalarMax (0x7fffffff)
#if HS_CAN_USE_FLOAT
#define hsFloatToScalar(x) hsFixed((x) * float(hsFixed1))
#define hsScalarToFloat(x) ((x) / float(hsFixed1))
#endif
#define hsIntToScalar(x) hsIntToFixed(x)
#define hsScalarToInt(x) hsFixedToInt(x)
#define hsScalarRound(x) hsFixedRound(x)
#define hsFixedToScalar(x) (x)
#define hsScalarToFixed(x) (x)
#define hsFractToScalar(x) hsFractToFixed(x)
#define hsScalarToFract(x) hsFixedToFract(x)
#define hsScalarMul(a, b) hsFixMul(a, b)
#define hsScalarMul2(a) ((a) << 1)
#define hsScalarDiv(a, b) hsFixDiv(a, b)
#define hsScalarDiv2(a) ((a) >> 1)
#define hsScalarInvert(a) hsFixDiv(hsFixed1, a)
#define hsScalarMod(a,b) ((a) % (b))
#define hsScalarMulDiv(n1, n2, d) hsMulDiv32(n1, n2, d)
#define hsScalarMulAdd(a, b, c) (hsFixMul(a, b) + (c))
#define hsSquareRoot(scalar) hsFixSqrt(scalar)
#define hsSine(angle) hsFixedSin(angle)
#define hsCosine(angle) hsFixedCos(angle)
#define hsTan(angle) (hsSine(angle)/hsCosine(angle))
#define hsASine(value) hsFixedASin(value)
#define hsACosine(value) hsFixedACos(value)
#ifdef __cplusplus
inline hsScalar hsScalarAverage(hsScalar a, hsScalar b) { return a + b >> 1; }
inline hsScalar hsScalarAverage(hsScalar a, hsScalar b, hsScalar t)
{
return a + hsFixMul(t, b - a);
}
#if HS_CAN_USE_FLOAT
inline hsScalar hsPow(hsScalar base, hsScalar exponent)
{
return hsFloatToScalar(powf(hsScalarToFloat(base), hsScalarToFloat(exponent)));
}
inline hsScalar hsATan2(hsScalar y, hsScalar x)
{
return hsFloatToScalar(atan2f(hsScalarToFloat(y), hsScalarToFloat(x)));
}
#endif
inline hsScalar hsCeil(hsScalar x) { return (x + 0xFFFF) & 0xFFFF0000; }
inline hsScalar hsFloor(hsScalar x) { return x & 0xFFFF0000; }
#endif
#endif
#if HS_SCALAR_IS_FLOAT
typedef float hsScalar;
#define hsScalar1 float(1)
#define hsScalarHalf float(0.5)
#define hsScalarPI float(HS_PI)
#define hsScalarMax float(3.402823466e+38F)
#define hsFloatToScalar(x) float(x)
#define hsScalarToFloat(x) float(x)
#define hsIntToScalar(x) float(x)
#define hsScalarToInt(x) Int32(x)
#define hsFixedToScalar(x) ((hsScalar)(x) / float(hsFixed1))
#define hsScalarToFixed(x) hsFixed((x) * float(hsFixed1))
#define hsFractToScalar(x) ((x) / float(hsFract1))
#define hsScalarToFract(x) hsFract((x) * float(hsFract1))
#ifdef __cplusplus
#define hsScalarMod(a,b) fmodf(a, b)
#define hsScalarMulAdd(a, b, c) ((a) * (b) + (c))
#define hsScalarMul(a,b) ((a) * (b))
#define hsScalarMul2(a) ((a) * 2)
#define hsScalarDiv(a,b) ((a) / (b))
#define hsScalarDiv2(a) ((a) * float(0.5))
#define hsScalarInvert(a) (float(1) / (a))
#define hsScalarMulDiv(n1,n2,d) ((n1) * (n2) / (d))
#ifndef HS_DEBUGGING /* mf horse testing defines vs inlines for VC++5.0 performance */
#define hsScalarRound(x) Int32((x) + ((x) < 0 ? -hsScalarHalf : hsScalarHalf))
#else /* HS_DEBUGGING - use inlines for type-checking etc...and all */
inline Int32 hsScalarRound(float x)
{
float half = hsScalarHalf;
if (x < 0)
half = -half;
return Int32(x + half);
}
#endif /* HS_DEBUGGING - use inlines for type-checking etc...and all */
inline float hsScalarAverage(float a, float b) { return (a + b) * float(0.5); }
inline float hsScalarAverage(float a, float b, float t) { return a + t * (b - a); }
inline hsScalar hsSquareRoot(hsScalar scalar) { return sqrtf(scalar); }
inline hsScalar hsSine(hsScalar angle) { return sinf(angle); }
inline hsScalar hsCosine(hsScalar angle) { return cosf(angle); }
inline hsScalar hsTan(hsScalar rads) { return tanf(rads); }
inline hsScalar hsASine(hsScalar value) { return asinf(value); }
inline hsScalar hsACosine(hsScalar value) { return acosf(value); }
inline hsScalar hsPow(hsScalar base, hsScalar exponent) { return powf(base, exponent); }
inline hsScalar hsATan2(hsScalar y, hsScalar x) { return atan2f(y, x); }
inline hsScalar hsCeil(hsScalar x) { return ceilf(x); }
inline hsScalar hsFloor(hsScalar x) { return floorf(x); }
#endif /* HS_SCALAR_IS_FLOAT */
#endif /* __CPLUSPLUS */
//
// Macros for enabling double precision math ops
// require #include <float.h>
//
#if HS_BUILD_FOR_WIN32
#define hsDoublePrecBegin \
unsigned int fpc=_controlfp( 0, 0); \
_controlfp( _PC_64, MCW_PC );
#define hsDoublePrecEnd \
_controlfp( fpc, 0xfffff );
#else
#define hsDoublePrecBegin
#define hsDoublePrecEnd
#endif
#endif