three
Version:
JavaScript 3D library
54 lines (29 loc) • 1 kB
JavaScript
import AnalyticLightNode from './AnalyticLightNode.js';
import { normalWorld } from '../accessors/Normal.js';
import { uniformArray } from '../accessors/UniformArrayNode.js';
import { Vector3 } from '../../math/Vector3.js';
import getShIrradianceAt from '../functions/material/getShIrradianceAt.js';
class LightProbeNode extends AnalyticLightNode {
static get type() {
return 'LightProbeNode';
}
constructor( light = null ) {
super( light );
const array = [];
for ( let i = 0; i < 9; i ++ ) array.push( new Vector3() );
this.lightProbe = uniformArray( array );
}
update( frame ) {
const { light } = this;
super.update( frame );
//
for ( let i = 0; i < 9; i ++ ) {
this.lightProbe.array[ i ].copy( light.sh.coefficients[ i ] ).multiplyScalar( light.intensity );
}
}
setup( builder ) {
const irradiance = getShIrradianceAt( normalWorld, this.lightProbe );
builder.context.irradiance.addAssign( irradiance );
}
}
export default LightProbeNode;