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/// @ref gtx_rotate_normalized_axis
/// @file glm/gtx/rotate_normalized_axis.inl
namespace glm
{
template <typename T, precision P>
GLM_FUNC_QUALIFIER tmat4x4<T, P> rotateNormalizedAxis
(
tmat4x4<T, P> const & m,
T const & angle,
tvec3<T, P> const & v
)
{
T const a = angle;
T const c = cos(a);
T const s = sin(a);
tvec3<T, P> const axis(v);
tvec3<T, P> const temp((static_cast<T>(1) - c) * axis);
tmat4x4<T, P> Rotate(uninitialize);
Rotate[0][0] = c + temp[0] * axis[0];
Rotate[0][1] = 0 + temp[0] * axis[1] + s * axis[2];
Rotate[0][2] = 0 + temp[0] * axis[2] - s * axis[1];
Rotate[1][0] = 0 + temp[1] * axis[0] - s * axis[2];
Rotate[1][1] = c + temp[1] * axis[1];
Rotate[1][2] = 0 + temp[1] * axis[2] + s * axis[0];
Rotate[2][0] = 0 + temp[2] * axis[0] + s * axis[1];
Rotate[2][1] = 0 + temp[2] * axis[1] - s * axis[0];
Rotate[2][2] = c + temp[2] * axis[2];
tmat4x4<T, P> Result(uninitialize);
Result[0] = m[0] * Rotate[0][0] + m[1] * Rotate[0][1] + m[2] * Rotate[0][2];
Result[1] = m[0] * Rotate[1][0] + m[1] * Rotate[1][1] + m[2] * Rotate[1][2];
Result[2] = m[0] * Rotate[2][0] + m[1] * Rotate[2][1] + m[2] * Rotate[2][2];
Result[3] = m[3];
return Result;
}
template <typename T, precision P>
GLM_FUNC_QUALIFIER tquat<T, P> rotateNormalizedAxis
(
tquat<T, P> const & q,
T const & angle,
tvec3<T, P> const & v
)
{
tvec3<T, P> const Tmp(v);
T const AngleRad(angle);
T const Sin = sin(AngleRad * T(0.5));
return q * tquat<T, P>(cos(AngleRad * static_cast<T>(0.5)), Tmp.x * Sin, Tmp.y * Sin, Tmp.z * Sin);
//return gtc::quaternion::cross(q, tquat<T, P>(cos(AngleRad * T(0.5)), Tmp.x * fSin, Tmp.y * fSin, Tmp.z * fSin));
}
}//namespace glm
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21 entries across 21 versions & 1 rubygems