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40 lines
886 B
40 lines
886 B
6 months ago
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import SpotLightNode from './SpotLightNode.js';
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import { addLightNode } from './LightsNode.js';
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import { texture } from '../accessors/TextureNode.js';
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import { vec2 } from '../shadernode/ShaderNode.js';
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import { addNodeClass } from '../core/Node.js';
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import IESSpotLight from '../../lights/IESSpotLight.js';
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class IESSpotLightNode extends SpotLightNode {
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getSpotAttenuation( angleCosine ) {
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const iesMap = this.light.iesMap;
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let spotAttenuation = null;
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if ( iesMap && iesMap.isTexture === true ) {
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const angle = angleCosine.acos().mul( 1.0 / Math.PI );
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spotAttenuation = texture( iesMap, vec2( angle, 0 ), 0 ).r;
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} else {
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spotAttenuation = super.getSpotAttenuation( angleCosine );
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}
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return spotAttenuation;
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}
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}
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export default IESSpotLightNode;
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addNodeClass( 'IESSpotLightNode', IESSpotLightNode );
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addLightNode( IESSpotLight, IESSpotLightNode );
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