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24 lines
589 B
24 lines
589 B
2 years ago
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import TempNode from '../core/TempNode.js';
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import { vec2, vec3, negate, normalize, cross, dot, mul, add, transformedNormalView, positionViewDirection } from '../shadernode/ShaderNodeBaseElements.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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construct() {
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const x = normalize( vec3( positionViewDirection.z, 0, negate( positionViewDirection.x ) ) );
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const y = cross( positionViewDirection, x );
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return add( mul( vec2( dot( x, transformedNormalView ), dot( y, transformedNormalView ) ), 0.495 ), 0.5 );
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}
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}
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export default MatcapUVNode;
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