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Added flip handedness matrix helper functions.

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bkaradzic
2013-06-24 21:27:58 -07:00
parent ad164a6210
commit 17f6071018
1 changed files with 42 additions and 0 deletions
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42
examples/common/fpumath.h
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@@ -380,4 +380,46 @@ inline void mtxInverse(float* __restrict _result, const float* __restrict _a)
_result[15] = +(xx*(yy*zz - zy*yz) - xy*(yx*zz - zx*yz) + xz*(yx*zy - zx*yy) ) * invDet;
}
/// Convert LH to RH projection matrix and vice versa.
inline void mtxProjFlipHandedness(float* __restrict _dst, const float* __restrict _src)
{
_dst[ 0] = -_src[ 0];
_dst[ 1] = -_src[ 1];
_dst[ 2] = -_src[ 2];
_dst[ 3] = -_src[ 3];
_dst[ 4] = _src[ 4];
_dst[ 5] = _src[ 5];
_dst[ 6] = _src[ 6];
_dst[ 7] = _src[ 7];
_dst[ 8] = -_src[ 8];
_dst[ 9] = -_src[ 9];
_dst[10] = -_src[10];
_dst[11] = -_src[11];
_dst[12] = _src[12];
_dst[13] = _src[13];
_dst[14] = _src[14];
_dst[15] = _src[15];
}
/// Convert LH to RH view matrix and vice versa.
inline void mtxViewFlipHandedness(float* __restrict _dst, const float* __restrict _src)
{
_dst[ 0] = -_src[ 0];
_dst[ 1] = _src[ 1];
_dst[ 2] = -_src[ 2];
_dst[ 3] = _src[ 3];
_dst[ 4] = -_src[ 4];
_dst[ 5] = _src[ 5];
_dst[ 6] = -_src[ 6];
_dst[ 7] = _src[ 7];
_dst[ 8] = -_src[ 8];
_dst[ 9] = _src[ 9];
_dst[10] = -_src[10];
_dst[11] = _src[11];
_dst[12] = -_src[12];
_dst[13] = _src[13];
_dst[14] = -_src[14];
_dst[15] = _src[15];
}
#endif // __FPU_MATH_H__