# Quaternion QML Type

Provides utility functions for quaternion. More...

 Import Statement: import QtQuick3D

## Methods

• quaternion fromAxesAndAngles(vector3d axis1, real angle1, vector3d axis2, real angle2)
• quaternion fromAxesAndAngles(vector3d axis1, real angle1, vector3d axis2, real angle2, vector3d axis3, real angle3)
• quaternion fromAxisAndAngle(vector3d axis, real angle)
• quaternion fromAxisAndAngle(real x, real y, real z, real angle)
• quaternion fromEulerAngles(vector3d eulerAngles)
• quaternion fromEulerAngles(real x, real y, real z)
• quaternion lookAt(vector3d sourcePosition, vector3d targetPosition, vector3d forwardDirection, vector3d upDirection)

## Detailed Description

The `Quaternion` is a global object with utility functions.

It is not instantiable; to use it, call the members of the global `Quaternion` object directly. For example:

```Node {
rotation: Quaternion.fromAxisAndAngle(Qt.vector3d(1, 0, 0), 45)
}```

## Method Documentation

 quaternion fromAxesAndAngles(vector3d axis1, real angle1, vector3d axis2, real angle2)

Creates a quaternion from axis1, angle1, axis2, and angle2. Returns the resulting quaternion.

 quaternion fromAxesAndAngles(vector3d axis1, real angle1, vector3d axis2, real angle2, vector3d axis3, real angle3)

Creates a quaternion from axis1, angle1, axis2, angle2, axis3, and angle3. Returns the resulting quaternion.

 quaternion fromAxisAndAngle(vector3d axis, real angle)

Creates a quaternion from axis and angle. Returns the resulting quaternion.

 quaternion fromAxisAndAngle(real x, real y, real z, real angle)

Creates a quaternion from x, y, z, and angle. Returns the resulting quaternion.

 quaternion fromEulerAngles(vector3d eulerAngles)

Creates a quaternion from eulerAngles. Returns the resulting quaternion.

 quaternion fromEulerAngles(real x, real y, real z)

Creates a quaternion from x, y, and z. Returns the resulting quaternion.

 quaternion lookAt(vector3d sourcePosition, vector3d targetPosition, vector3d forwardDirection, vector3d upDirection)

Creates a quaternion from sourcePosition, targetPosition, forwardDirection, and upDirection. This is used for getting a rotation value for pointing at a particular target, and can be used to point a camera at a position in a scene.

forwardDirection defaults to `Qt.vector3d(0, 0, -1)` upDirection defaults to `Qt.vector3d(0, 1, 0)`

Returns the resulting quaternion.

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