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Diffstat (limited to 'glm-master/glm/gtx/rotate_normalized_axis.inl')
-rw-r--r-- | glm-master/glm/gtx/rotate_normalized_axis.inl | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/glm-master/glm/gtx/rotate_normalized_axis.inl b/glm-master/glm/gtx/rotate_normalized_axis.inl new file mode 100644 index 0000000..b2e9278 --- /dev/null +++ b/glm-master/glm/gtx/rotate_normalized_axis.inl @@ -0,0 +1,58 @@ +/// @ref gtx_rotate_normalized_axis + +namespace glm +{ + template<typename T, qualifier Q> + GLM_FUNC_QUALIFIER mat<4, 4, T, Q> rotateNormalizedAxis + ( + mat<4, 4, T, Q> const& m, + T const& angle, + vec<3, T, Q> const& v + ) + { + T const a = angle; + T const c = cos(a); + T const s = sin(a); + + vec<3, T, Q> const axis(v); + + vec<3, T, Q> const temp((static_cast<T>(1) - c) * axis); + + mat<4, 4, T, Q> Rotate; + 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]; + + mat<4, 4, T, Q> Result; + 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, qualifier Q> + GLM_FUNC_QUALIFIER qua<T, Q> rotateNormalizedAxis + ( + qua<T, Q> const& q, + T const& angle, + vec<3, T, Q> const& v + ) + { + vec<3, T, Q> const Tmp(v); + + T const AngleRad(angle); + T const Sin = sin(AngleRad * T(0.5)); + + return q * qua<T, Q>(cos(AngleRad * static_cast<T>(0.5)), Tmp.x * Sin, Tmp.y * Sin, Tmp.z * Sin); + //return gtc::quaternion::cross(q, tquat<T, Q>(cos(AngleRad * T(0.5)), Tmp.x * fSin, Tmp.y * fSin, Tmp.z * fSin)); + } +}//namespace glm |