Quaternion | /src/math/Quaternion.d.ts | threejs_4_deno@v121

class Quaternion

import { Quaternion } from "https://deno.land/x/threejs_4_deno@v121/src/math/Quaternion.d.ts";

Implementation of a quaternion. This is used for rotating things without incurring in the dreaded gimbal lock issue, amongst other advantages.

Examples

const quaternion = new THREE.Quaternion(); quaternion.setFromAxisAngle( new THREE.Vector3( 0, 1, 0 ), Math.PI / 2 ); const vector = new THREE.Vector3( 1, 0, 0 ); vector.applyQuaternion( quaternion );

Constructors

new

Quaternion(

x?: number,

y?: number,

z?: number,

w?: number,

)

Properties

_onChangeCallback: Function

readonly

isQuaternion: true

w: number

x: number

y: number

z: number

Methods

_onChange(callback: Function): Quaternion

angleTo(q: Quaternion): number

clone(): this

Clones this quaternion.

conjugate(): Quaternion

copy(q: Quaternion): this

Copies values of q to this quaternion.

dot(v: Quaternion): number

equals(v: Quaternion): boolean

fromArray(array: number[], offset?: number): this

Sets this quaternion's x, y, z and w value from the provided array.

fromArray(array: ArrayLike<number>, offset?: number): this

Sets this quaternion's x, y, z and w value from the provided array-like.

identity(): Quaternion

inverse(): Quaternion

Inverts this quaternion.

length(): number

Computes length of this quaternion.

lengthSq(): number

multiply(q: Quaternion): Quaternion

Multiplies this quaternion by b.

multiplyQuaternions(a: Quaternion, b: Quaternion): Quaternion

Sets this quaternion to a x b Adapted from http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/code/index.htm.

deprecated

multiplyVector3(v: any): any

normalize(): Quaternion

Normalizes this quaternion.

premultiply(q: Quaternion): Quaternion

rotateTowards(q: Quaternion, step: number): Quaternion

set(

x: number,

y: number,

z: number,

w: number,

): Quaternion

Sets values of this quaternion.

setFromAxisAngle(axis: Vector3, angle: number): Quaternion

Sets this quaternion from rotation specified by axis and angle. Adapted from http://www.euclideanspace.com/maths/geometry/rotations/conversions/angleToQuaternion/index.htm. Axis have to be normalized, angle is in radians.

setFromEuler(euler: Euler): Quaternion

Sets this quaternion from rotation specified by Euler angles.

setFromRotationMatrix(m: Matrix4): Quaternion

Sets this quaternion from rotation component of m. Adapted from http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToQuaternion/index.htm.

setFromUnitVectors(vFrom: Vector3, vTo: Vector3): Quaternion

slerp(qb: Quaternion, t: number): Quaternion

toArray(array?: number[], offset?: number): number[]

Returns an array [x, y, z, w], or copies x, y, z and w into the provided array.

toArray(array: ArrayLike<number>, offset?: number): ArrayLike<number>

Copies x, y, z and w into the provided array-like.

Static Methods

multiplyQuaternionsFlat(

dst: number[],

dstOffset: number,

src0: number[],

srcOffset: number,

src1: number[],

stcOffset1: number,

): number[]

slerp(

qa: Quaternion,

qb: Quaternion,

qm: Quaternion,

t: number,

): Quaternion

Adapted from http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/slerp/.

slerpFlat(

dst: number[],

dstOffset: number,

src0: number[],

srcOffset: number,

src1: number[],

stcOffset1: number,

t: number,

): Quaternion