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import { Light } from './Light.js';
import { DirectionalLightShadow } from './DirectionalLightShadow.js';
import { Object3D } from '../core/Object3D.js';

/**
 * A light that gets emitted in a specific direction. This light will behave
 * as though it is infinitely far away and the rays produced from it are all
 * parallel. The common use case for this is to simulate daylight; the sun is
 * far enough away that its position can be considered to be infinite, and
 * all light rays coming from it are parallel.
 *
 * A common point of confusion for directional lights is that setting the
 * rotation has no effect. This is because three.js's DirectionalLight is the
 * equivalent to what is often called a 'Target Direct Light' in other
 * applications.
 *
 * This means that its direction is calculated as pointing from the light's
 * {@link Object3D#position} to the {@link DirectionalLight#target} position
 * (as opposed to a 'Free Direct Light' that just has a rotation
 * component).
 *
 * This light can cast shadows - see the {@link DirectionalLightShadow} for details.
 *
 * ```js
 * // White directional light at half intensity shining from the top.
 * const directionalLight = new THREE.DirectionalLight( 0xffffff, 0.5 );
 * scene.add( directionalLight );
 * ```
 *
 * @augments Light
 */
class DirectionalLight extends Light {

/**
	 * Constructs a new directional light.
	 *
	 * @param {(number|Color|string)} [color=0xffffff] - The light's color.
	 * @param {number} [intensity=1] - The light's strength/intensity.
	 */
	constructor( color, intensity ) {

super( color, intensity );

/**
		 * This flag can be used for type testing.
		 *
		 * @type {boolean}
		 * @readonly
		 * @default true
		 */
		this.isDirectionalLight = true;

this.type = 'DirectionalLight';

this.position.copy( Object3D.DEFAULT_UP );
		this.updateMatrix();

/**
		 * The directional light points from its position to the
		 * target's position.
		 *
		 * For the target's position to be changed to anything other
		 * than the default, it must be added to the scene.
		 *
		 * It is also possible to set the target to be another 3D object
		 * in the scene. The light will now track the target object.
		 *
		 * @type {Object3D}
		 */
		this.target = new Object3D();

/**
		 * This property holds the light's shadow configuration.
		 *
		 * @type {DirectionalLightShadow}
		 */
		this.shadow = new DirectionalLightShadow();

}

dispose() {

this.shadow.dispose();

}

copy( source ) {

super.copy( source );

this.target = source.target.clone();
		this.shadow = source.shadow.clone();

return this;

}

export { DirectionalLight };

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Name	Size	Perms	Modified	Actions
webgpu DIR	-	drwxr-xr-x	2025-03-28 11:04:38	Edit Download recursive recursive
AmbientLight.js	828 B	lrw-r--r--	2025-03-28 11:04:37	Edit Download recursive recursive
DirectionalLight.js	2.59 KB	lrw-r--r--	2025-03-28 11:04:38	Edit Download recursive recursive
DirectionalLightShadow.js	609 B	lrw-r--r--	2025-03-28 11:04:38	Edit Download recursive recursive
HemisphereLight.js	1.35 KB	lrw-r--r--	2025-03-28 11:04:38	Edit Download recursive recursive
Light.js	1.94 KB	lrw-r--r--	2025-03-28 11:04:38	Edit Download recursive recursive
LightProbe.js	2.24 KB	lrw-r--r--	2025-03-28 11:04:38	Edit Download recursive recursive
LightShadow.js	7.23 KB	lrw-r--r--	2025-03-28 11:04:38	Edit Download recursive recursive
PointLight.js	2.76 KB	lrw-r--r--	2025-03-28 11:04:39	Edit Download recursive recursive
PointLightShadow.js	2.99 KB	lrw-r--r--	2025-03-28 11:04:39	Edit Download recursive recursive
RectAreaLight.js	2.55 KB	lrw-r--r--	2025-03-28 11:04:39	Edit Download recursive recursive
SpotLight.js	4.46 KB	lrw-r--r--	2025-03-28 11:04:39	Edit Download recursive recursive
SpotLightShadow.js	1.34 KB	lrw-r--r--	2025-03-28 11:04:39	Edit Download recursive recursive

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