three.js/src/math/SphericalHarmonics3.d.ts

import { Vector3 } from './Vector3.js';

export class SphericalHarmonics3 {

	constructor();

	coefficients: Vector3[];
	isSphericalHarmonics3: boolean;

	set ( coefficients: Vector3[] ): SphericalHarmonics3;
	zero(): SphericalHarmonics3;
	add( sh: SphericalHarmonics3 ): SphericalHarmonics3;
	scale( s: number ): SphericalHarmonics3;
	lerp( sh: SphericalHarmonics3, alpha: number ): SphericalHarmonics3;
	equals( sh: SphericalHarmonics3 ): boolean;
	copy( sh: SphericalHarmonics3 ): SphericalHarmonics3;
	clone(): SphericalHarmonics3;
	fromArray( array: number[] ): SphericalHarmonics3;
	toArray(): number[];

	getAt( normal: Vector3, target: Vector3 ) : Vector3;
	getIrradianceAt( normal: Vector3, target: Vector3 ) : Vector3;

	static getBasisAt( normal: Vector3, shBasis: number[] ): void;

}