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76 lines
1.2 KiB
76 lines
1.2 KiB
2 years ago
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import { TempNode } from '../core/TempNode.js';
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import { FunctionNode } from '../core/FunctionNode.js';
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import { UVNode } from '../accessors/UVNode.js';
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class CheckerNode extends TempNode {
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constructor( uv ) {
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super( 'f' );
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this.uv = uv || new UVNode();
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}
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generate( builder, output ) {
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const snoise = builder.include( CheckerNode.Nodes.checker );
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return builder.format( snoise + '( ' + this.uv.build( builder, 'v2' ) + ' )', this.getType( builder ), output );
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}
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copy( source ) {
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super.copy( source );
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this.uv = source.uv;
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return this;
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}
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toJSON( meta ) {
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let data = this.getJSONNode( meta );
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if ( ! data ) {
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data = this.createJSONNode( meta );
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data.uv = this.uv.toJSON( meta ).uuid;
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}
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return data;
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}
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}
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CheckerNode.Nodes = ( function () {
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// https://github.com/mattdesl/glsl-checker/blob/master/index.glsl
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const checker = new FunctionNode( /* glsl */`
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float checker( vec2 uv ) {
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float cx = floor( uv.x );
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float cy = floor( uv.y );
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float result = mod( cx + cy, 2.0 );
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return sign( result );
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}`
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);
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return {
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checker: checker
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};
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} )();
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CheckerNode.prototype.nodeType = 'Noise';
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export { CheckerNode };
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