74 lines
1.5 KiB
TypeScript
74 lines
1.5 KiB
TypeScript
/*!
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* This Source Code Form is subject to the terms of the Mozilla Public License,
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* v. 2.0. If a copy of the MPL was not distributed with this file, You can
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* obtain one at http://mozilla.org/MPL/2.0/.
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*/
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export interface QuaternionObject {
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readonly x: number;
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readonly y: number;
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readonly z: number;
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readonly w: number;
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}
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export type QuaternionTuple = readonly [x: number, y: number, z: number, w: number];
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export class Quaternion {
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readonly type!: "Quaternion";
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x: number;
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y: number;
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z: number;
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w: number;
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constructor(x: number, y: number, z: number, w: number) {
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Object.defineProperty(this, "type", { value: "Quaternion" });
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this.x = x;
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this.y = y;
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this.z = z;
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this.w = w;
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}
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static fromObject(object: QuaternionObject): Quaternion {
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return new Quaternion(object.x, object.y, object.z, object.w);
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}
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static fromTuple(tuple: QuaternionTuple): Quaternion {
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return new Quaternion(...tuple);
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}
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static identity(): Quaternion {
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return new Quaternion(0, 0, 0, 1);
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}
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setObject(object: QuaternionObject): Quaternion {
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this.x = object.x;
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this.y = object.y;
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this.z = object.z;
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this.w = object.w;
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return this;
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}
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setTuple(tuple: QuaternionTuple): Quaternion {
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this.x = tuple[0];
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this.y = tuple[1];
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this.z = tuple[2];
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this.w = tuple[3];
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return this;
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}
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setIdentity(): Quaternion {
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this.x = 0;
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this.y = 0;
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this.z = 0;
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this.w = 1;
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return this;
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}
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}
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export function isQuaternion(value: unknown): value is Quaternion {
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return Boolean(value) && (value as Quaternion).type === "Quaternion";
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}
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