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Switching to new Vec3.

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Branimir Karadžić
2018-11-13 22:37:50 -08:00
parent 006bcaa169
commit 6141ff9661
1 changed files with 36 additions and 0 deletions
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36
include/bx/inline/math.inl
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@@ -1005,6 +1005,42 @@ namespace bx
mtxQuatTranslation(_result, quat, _translation);
}
inline Vec3 mul(const Vec3& _vec, const float* _mat)
{
Vec3 result;
result.x = _vec.x * _mat[0] + _vec.y * _mat[4] + _vec.z * _mat[ 8] + _mat[12];
result.y = _vec.x * _mat[1] + _vec.y * _mat[5] + _vec.z * _mat[ 9] + _mat[13];
result.z = _vec.x * _mat[2] + _vec.y * _mat[6] + _vec.z * _mat[10] + _mat[14];
return result;
}
inline Vec3 mulXyz0(const Vec3& _vec, const float* _mat)
{
Vec3 result;
result.x = _vec.x * _mat[0] + _vec.y * _mat[4] + _vec.z * _mat[ 8];
result.y = _vec.x * _mat[1] + _vec.y * _mat[5] + _vec.z * _mat[ 9];
result.z = _vec.x * _mat[2] + _vec.y * _mat[6] + _vec.z * _mat[10];
return result;
}
inline Vec3 mulH(const Vec3& _vec, const float* _mat)
{
const float xx = _vec.x * _mat[0] + _vec.y * _mat[4] + _vec.z * _mat[ 8] + _mat[12];
const float yy = _vec.x * _mat[1] + _vec.y * _mat[5] + _vec.z * _mat[ 9] + _mat[13];
const float zz = _vec.x * _mat[2] + _vec.y * _mat[6] + _vec.z * _mat[10] + _mat[14];
const float ww = _vec.x * _mat[3] + _vec.y * _mat[7] + _vec.z * _mat[11] + _mat[15];
const float invW = sign(ww) / ww;
Vec3 result =
{
xx * invW,
yy * invW,
zz * invW,
};
return result;
}
inline void vec3MulMtx(float* _result, const float* _vec, const float* _mat)
{
_result[0] = _vec[0] * _mat[ 0] + _vec[1] * _mat[4] + _vec[2] * _mat[ 8] + _mat[12];