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three

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JavaScript 3D library

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import { Color } from '../math/Color.js'; import { Vector3 } from '../math/Vector3.js'; import { LightProbe } from './LightProbe.js'; function HemisphereLightProbe( skyColor, groundColor, intensity ) { LightProbe.call( this, undefined, intensity ); const color1 = new Color().set( skyColor ); const color2 = new Color().set( groundColor ); const sky = new Vector3( color1.r, color1.g, color1.b ); const ground = new Vector3( color2.r, color2.g, color2.b ); // without extra factor of PI in the shader, should = 1 / Math.sqrt( Math.PI ); const c0 = Math.sqrt( Math.PI ); const c1 = c0 * Math.sqrt( 0.75 ); this.sh.coefficients[ 0 ].copy( sky ).add( ground ).multiplyScalar( c0 ); this.sh.coefficients[ 1 ].copy( sky ).sub( ground ).multiplyScalar( c1 ); } HemisphereLightProbe.prototype = Object.assign( Object.create( LightProbe.prototype ), { constructor: HemisphereLightProbe, isHemisphereLightProbe: true, copy: function ( source ) { // modifying colors not currently supported LightProbe.prototype.copy.call( this, source ); return this; }, toJSON: function ( meta ) { const data = LightProbe.prototype.toJSON.call( this, meta ); // data.sh = this.sh.toArray(); // todo return data; } } ); export { HemisphereLightProbe };