import LightingModel from '../core/LightingModel.js';
import { diffuseColor } from '../core/PropertyNode.js';
import { float } from '../tsl/TSLBase.js';
/**
* Represents lighting model for a shadow material. Used in {@link ShadowNodeMaterial}.
*
* @augments LightingModel
*/
class ShadowMaskModel extends LightingModel {
/**
* Constructs a new shadow mask model.
*/
constructor() {
super();
/**
* The shadow mask node.
*
* @type {Node}
*/
this.shadowNode = float( 1 ).toVar( 'shadowMask' );
}
/**
* Only used to save the shadow mask.
*
* @param {Object} input - The input data.
*/
direct( { shadowMask } ) {
this.shadowNode.mulAssign( shadowMask );
}
/**
* Uses the shadow mask to produce the final color.
*
* @param {ContextNode} context - The current node context.
*/
finish( context ) {
diffuseColor.a.mulAssign( this.shadowNode.oneMinus() );
context.outgoingLight.rgb.assign( diffuseColor.rgb ); // TODO: Optimize LightsNode to avoid this assignment
}
}
export default ShadowMaskModel;