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76 lines
1.4 KiB
JavaScript
76 lines
1.4 KiB
JavaScript
/**
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* @author sunag / http://www.sunag.com.br/
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*/
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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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function CheckerNode( uv ) {
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TempNode.call( this, 'f' );
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this.uv = uv || new UVNode();
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}
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CheckerNode.prototype = Object.create( TempNode.prototype );
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CheckerNode.prototype.constructor = CheckerNode;
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CheckerNode.prototype.nodeType = "Noise";
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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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var checker = new FunctionNode( [
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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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].join( "\n" ) );
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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.generate = function ( builder, output ) {
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var 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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CheckerNode.prototype.copy = function ( source ) {
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TempNode.prototype.copy.call( this, source );
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this.uv = source.uv;
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};
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CheckerNode.prototype.toJSON = function ( meta ) {
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var 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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export { CheckerNode };
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