import { LightsNode } from '../../nodes/Nodes.js';
import ChainMap from './ChainMap.js';
const _defaultLights = /*@__PURE__*/ new LightsNode();
const _chainKeys = [];
/**
* This renderer module manages the lights nodes which are unique
* per scene and camera combination.
*
* The lights node itself is later configured in the render list
* with the actual lights from the scene.
*
* @private
* @augments ChainMap
*/
class Lighting extends ChainMap {
/**
* Constructs a lighting management component.
*/
constructor() {
super();
}
/**
* Creates a new lights node for the given array of lights.
*
* @param {Array<Light>} lights - The render object.
* @return {LightsNode} The lights node.
*/
createNode( lights = [] ) {
return new LightsNode().setLights( lights );
}
/**
* Returns a lights node for the given scene and camera.
*
* @param {Scene} scene - The scene.
* @param {Camera} camera - The camera.
* @return {LightsNode} The lights node.
*/
getNode( scene, camera ) {
// ignore post-processing
if ( scene.isQuadMesh ) return _defaultLights;
_chainKeys[ 0 ] = scene;
_chainKeys[ 1 ] = camera;
let node = this.get( _chainKeys );
if ( node === undefined ) {
node = this.createNode();
this.set( _chainKeys, node );
}
_chainKeys.length = 0;
return node;
}
}
export default Lighting;