26 lines
651 B
JavaScript
26 lines
651 B
JavaScript
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import TempNode from '../core/TempNode.js';
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import { join, negate, normalize, cross, dot, mul, add, transformedNormalView, positionViewDirection } from '../shadernode/ShaderNodeElements.js';
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class MatcapUVNode extends TempNode {
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constructor() {
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super( 'vec2' );
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}
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generate( builder ) {
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const x = normalize( join( positionViewDirection.z, 0, negate( positionViewDirection.x ) ) );
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const y = cross( positionViewDirection, x );
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const uv = add( mul( join( dot( x, transformedNormalView ), dot( y, transformedNormalView ) ), 0.495 ), 0.5 );
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return uv.build( builder, this.getNodeType( builder ) );
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}
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}
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export default MatcapUVNode;
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