import { Color } from './../math/Color';
import { Object3D } from './../core/Object3D';
import { SpotLightShadow } from './SpotLightShadow';
import { Light } from './Light';

/**
 * A point light that can cast shadow in one direction.
 */
export class SpotLight extends Light {

	constructor(
		color?: Color | string | number,
		intensity?: number,
		distance?: number,
		angle?: number,
		penumbra?: number,
		decay?: number
	);

	/**
	 * Spotlight focus points at target.position.
	 * Default position — (0,0,0).
	 */
	target: Object3D;

	/**
	 * Light's intensity.
	 * Default — 1.0.
	 */
	intensity: number;

	/**
	 * If non-zero, light will attenuate linearly from maximum intensity at light position down to zero at distance.
	 * Default — 0.0.
	 */
	distance: number;

	/*
	 * Maximum extent of the spotlight, in radians, from its direction.
	 * Default — Math.PI/2.
	 */
	angle: number;

	decay: number;
	shadow: SpotLightShadow;
	power: number;
	penumbra: number;
	readonly isSpotLight: true;

}
