Interface QuaternionData

Minimal { x, y, z, w } shape of a quaternion, accepted across the math API

Quaternion and ObservableQuaternion implement it, and so does any plain object with these four numbers. For a turn of angle radians around the unit vector axis, (x, y, z) is axis * sin(angle / 2) and w is cos(angle / 2).

Example

const quarterTurnAroundY: QuaternionData = { x: 0, y: Math.SQRT1_2, z: 0, w: Math.SQRT1_2 };

door.quaternion.copyFrom(quarterTurnAroundY);

interface QuaternionData {
    w: number;
    x: number;
    y: number;
    z: number;
}

Implemented by

ObservableQuaternion
Quaternion

Index

Properties

w x y z

Properties

w

w: number

The w component

Example

const angle = 2 * Math.acos(rotation.w);

x

x: number

The x component

Example

const axisX = rotation.x / Math.sqrt(1 - rotation.w * rotation.w);

y

y: number

The y component

Example

const axisY = rotation.y / Math.sqrt(1 - rotation.w * rotation.w);

z

z: number

The z component

Example

const axisZ = rotation.z / Math.sqrt(1 - rotation.w * rotation.w);

Interface QuaternionData

Example

Implemented by

Index

Properties

Properties

w

Example

x

Example

y

Example

z

Example

Settings

On This Page