0.9.9 API documenation

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GLM_GTX_quaternion
GTX Extensions (Experimental)

Extented quaternion types and functions. More...

## Functions
template<typename T , qualifier P>
GLM_FUNC_DECL vec< 3, T, P > | cross (tquat< T, P > const &q, vec< 3, T, P > const &v)
| Compute a cross product between a quaternion and a vector. More...
template<typename T , qualifier P>
GLM_FUNC_DECL vec< 3, T, P > | cross (vec< 3, T, P > const &v, tquat< T, P > const &q)
| Compute a cross product between a vector and a quaternion. More...
template<typename T , qualifier P>
GLM_FUNC_DECL tquat< T, P > | exp (tquat< T, P > const &q)
| Returns a exp of a quaternion. More...
template<typename T , qualifier P>
GLM_FUNC_DECL T | extractRealComponent (tquat< T, P > const &q)
| Extract the real component of a quaternion. More...
template<typename T , qualifier P>
GLM_FUNC_DECL tquat< T, P > | fastMix (tquat< T, P > const &x, tquat< T, P > const &y, T const &a)
| Quaternion normalized linear interpolation. More...
template<typename T , qualifier P>
GLM_FUNC_DECL tquat< T, P > | intermediate (tquat< T, P > const &prev, tquat< T, P > const &curr, tquat< T, P > const &next)
| Returns an intermediate control point for squad interpolation. More...
template<typename T , qualifier P>
GLM_FUNC_DECL T | length2 (tquat< T, P > const &q)
| Returns the squared length of x. More...
template<typename T , qualifier P>
GLM_FUNC_DECL tquat< T, P > | log (tquat< T, P > const &q)
| Returns a log of a quaternion. More...
template<typename T , qualifier P>
GLM_FUNC_DECL tquat< T, P > | pow (tquat< T, P > const &x, T const &y)
| Returns x raised to the y power. More...
template<typename T , qualifier P>
GLM_FUNC_DECL tquat< T, P > | quat_identity ()
| Create an identity quaternion. More...
template<typename T , qualifier P>
GLM_FUNC_DECL tquat< T, P > | quatLookAt (vec< 3, T, P > const &direction, vec< 3, T, P > const &up)
| Build a look at quaternion based on the default handedness. More...
template<typename T , qualifier P>
GLM_FUNC_DECL tquat< T, P > | quatLookAtLH (vec< 3, T, P > const &direction, vec< 3, T, P > const &up)
| Build a left-handed look at quaternion. More...
template<typename T , qualifier P>
GLM_FUNC_DECL tquat< T, P > | quatLookAtRH (vec< 3, T, P > const &direction, vec< 3, T, P > const &up)
| Build a right-handed look at quaternion. More...
template<typename T , qualifier P>
GLM_FUNC_DECL vec< 3, T, P > | rotate (tquat< T, P > const &q, vec< 3, T, P > const &v)
| Returns quarternion square root. More...
template<typename T , qualifier P>
GLM_FUNC_DECL vec< 4, T, P > | rotate (tquat< T, P > const &q, vec< 4, T, P > const &v)
| Rotates a 4 components vector by a quaternion. More...
template<typename T , qualifier P>
GLM_FUNC_DECL tquat< T, P > | rotation (vec< 3, T, P > const &orig, vec< 3, T, P > const &dest)
| Compute the rotation between two vectors. More...
template<typename T , qualifier P>
GLM_FUNC_DECL tquat< T, P > | shortMix (tquat< T, P > const &x, tquat< T, P > const &y, T const &a)
| Quaternion interpolation using the rotation short path. More...
template<typename T , qualifier P>
GLM_FUNC_DECL tquat< T, P > | squad (tquat< T, P > const &q1, tquat< T, P > const &q2, tquat< T, P > const &s1, tquat< T, P > const &s2, T const &h)
| Compute a point on a path according squad equation. More...
template<typename T , qualifier P>
GLM_FUNC_DECL mat< 3, 3, T, P > | toMat3 (tquat< T, P > const &x)
| Converts a quaternion to a 3 * 3 matrix. More...
template<typename T , qualifier P>
GLM_FUNC_DECL mat< 4, 4, T, P > | toMat4 (tquat< T, P > const &x)
| Converts a quaternion to a 4 * 4 matrix. More...
template<typename T , qualifier P>
GLM_FUNC_DECL tquat< T, P > | toQuat (mat< 3, 3, T, P > const &x)
| Converts a 3 * 3 matrix to a quaternion. More...
template<typename T , qualifier P>
GLM_FUNC_DECL tquat< T, P > | toQuat (mat< 4, 4, T, P > const &x)
| Converts a 4 * 4 matrix to a quaternion. More...

## Detailed Description

Extented quaternion types and functions.

<glm/gtx/quaternion.hpp> need to be included to use these functionalities.

## Function Documentation

GLM_FUNC_DECL vec<3, T, P> glm::cross | ( | tquat< T, P > const & | q,
|  | vec< 3, T, P > const & | v
| ) |  |

Compute a cross product between a quaternion and a vector.

See also
  GLM_GTX_quaternion

GLM_FUNC_DECL vec<3, T, P> glm::cross | ( | vec< 3, T, P > const & | v,
|  | tquat< T, P > const & | q
| ) |  |

Compute a cross product between a vector and a quaternion.

See also
  GLM_GTX_quaternion

GLM_FUNC_DECL tquat<T, P> glm::exp | ( | tquat< T, P > const & | q | ) |

Returns a exp of a quaternion.

See also
  GLM_GTX_quaternion

GLM_FUNC_DECL T glm::extractRealComponent | ( | tquat< T, P > const & | q | ) |

Extract the real component of a quaternion.

See also
  GLM_GTX_quaternion

GLM_FUNC_DECL tquat<T, P> glm::fastMix | ( | tquat< T, P > const & | x,
|  | tquat< T, P > const & | y,
|  | T const & | a
| ) |  |

Quaternion normalized linear interpolation.

See also
  GLM_GTX_quaternion

GLM_FUNC_DECL tquat<T, P> glm::intermediate | ( | tquat< T, P > const & | prev,
|  | tquat< T, P > const & | curr,
|  | tquat< T, P > const & | next
| ) |  |

Returns an intermediate control point for squad interpolation.

See also
  GLM_GTX_quaternion

GLM_FUNC_DECL T glm::length2 | ( | tquat< T, P > const & | q | ) |

Returns the squared length of x.

See also
  GLM_GTX_quaternion

GLM_FUNC_DECL tquat<T, P> glm::log | ( | tquat< T, P > const & | q | ) |

Returns a log of a quaternion.

See also
  GLM_GTX_quaternion

GLM_FUNC_DECL tquat<T, P> glm::pow | ( | tquat< T, P > const & | x,
|  | T const & | y
| ) |  |

Returns x raised to the y power.

See also
  GLM_GTX_quaternion

GLM_FUNC_DECL tquat<T, P> glm::quat_identity | ( |  | ) |

Create an identity quaternion.

See also
  GLM_GTX_quaternion

GLM_FUNC_DECL tquat<T, P> glm::quatLookAt | ( | vec< 3, T, P > const & | direction,
|  | vec< 3, T, P > const & | up
| ) |  |

Build a look at quaternion based on the default handedness.

Parameters

  direction | Desired direction of the camera.
  up | Up vector, how the camera is oriented. Typically (0, 1, 0).

GLM_FUNC_DECL tquat<T, P> glm::quatLookAtLH | ( | vec< 3, T, P > const & | direction,
|  | vec< 3, T, P > const & | up
| ) |  |

Build a left-handed look at quaternion.

Parameters

  direction | Desired direction onto which the +z-axis gets mapped
  up | Up vector, how the camera is oriented. Typically (0, 1, 0).

GLM_FUNC_DECL tquat<T, P> glm::quatLookAtRH | ( | vec< 3, T, P > const & | direction,
|  | vec< 3, T, P > const & | up
| ) |  |

Build a right-handed look at quaternion.

Parameters

  direction | Desired direction of the camera.
  up | Up vector, how the camera is oriented. Typically (0, 1, 0).

GLM_FUNC_DECL vec<3, T, P> glm::rotate | ( | tquat< T, P > const & | q,
|  | vec< 3, T, P > const & | v
| ) |  |

Returns quarternion square root.

See also
  GLM_GTX_quaternion Rotates a 3 components vector by a quaternion.
  GLM_GTX_quaternion

GLM_FUNC_DECL vec<4, T, P> glm::rotate | ( | tquat< T, P > const & | q,
|  | vec< 4, T, P > const & | v
| ) |  |

Rotates a 4 components vector by a quaternion.

See also
  GLM_GTX_quaternion

GLM_FUNC_DECL tquat<T, P> glm::rotation | ( | vec< 3, T, P > const & | orig,
|  | vec< 3, T, P > const & | dest
| ) |  |

Compute the rotation between two vectors.

param orig vector, needs to be normalized param dest vector, needs to be normalized

See also
  GLM_GTX_quaternion

GLM_FUNC_DECL tquat<T, P> glm::shortMix | ( | tquat< T, P > const & | x,
|  | tquat< T, P > const & | y,
|  | T const & | a
| ) |  |

Quaternion interpolation using the rotation short path.

See also
  GLM_GTX_quaternion

GLM_FUNC_DECL tquat<T, P> glm::squad | ( | tquat< T, P > const & | q1,
|  | tquat< T, P > const & | q2,
|  | tquat< T, P > const & | s1,
|  | tquat< T, P > const & | s2,
|  | T const & | h
| ) |  |

Compute a point on a path according squad equation.

q1 and q2 are control points; s1 and s2 are intermediate control points.

See also
  GLM_GTX_quaternion

GLM_FUNC_DECL mat<3, 3, T, P> glm::toMat3 | ( | tquat< T, P > const & | x | ) |

Converts a quaternion to a 3 * 3 matrix.

See also
  GLM_GTX_quaternion

Definition at line 134 of file gtx/quaternion.hpp.

References glm::mat3_cast().

GLM_FUNC_DECL mat<4, 4, T, P> glm::toMat4 | ( | tquat< T, P > const & | x | ) |

Converts a quaternion to a 4 * 4 matrix.

See also
  GLM_GTX_quaternion

Definition at line 141 of file gtx/quaternion.hpp.

References glm::mat4_cast().

GLM_FUNC_DECL tquat<T, P> glm::toQuat | ( | mat< 3, 3, T, P > const & | x | ) |

Converts a 3 * 3 matrix to a quaternion.

See also
  GLM_GTX_quaternion

Definition at line 148 of file gtx/quaternion.hpp.

References glm::quat_cast().

GLM_FUNC_DECL tquat<T, P> glm::toQuat | ( | mat< 4, 4, T, P > const & | x | ) |

Converts a 4 * 4 matrix to a quaternion.

See also
  GLM_GTX_quaternion

Definition at line 155 of file gtx/quaternion.hpp.

References glm::quat_cast().