text: /**
   * @author sunag / http://www.sunag.com.br/
   */
  
  import { TempNode } from '../core/TempNode.d.ts';
  import { NodeLib } from '../core/NodeLib.d.ts';
  
  var vertexDict = [ 'uv', 'uv2' ],
  	fragmentDict = [ 'vUv', 'vUv2' ];
  
  function UVNode( index ) {
  
  	TempNode.call( this, 'v2', { shared: false } );
  
  	this.index = index || 0;
  
  }
  
  UVNode.prototype = Object.create( TempNode.prototype );
  UVNode.prototype.constructor = UVNode;
  UVNode.prototype.nodeType = "UV";
  
  UVNode.prototype.generate = function ( builder, output ) {
  
  	builder.requires.uv[ this.index ] = true;
  
  	var result = builder.isShader( 'vertex' ) ? vertexDict[ this.index ] : fragmentDict[ this.index ];
  
  	return builder.format( result, this.getType( builder ), output );
  
  };
  
  UVNode.prototype.copy = function ( source ) {
  
  	TempNode.prototype.copy.call( this, source );
  
  	this.index = source.index;
  
  	return this;
  
  };
  
  UVNode.prototype.toJSON = function ( meta ) {
  
  	var data = this.getJSONNode( meta );
  
  	if ( ! data ) {
  
  		data = this.createJSONNode( meta );
  
  		data.index = this.index;
  
  	}
  
  	return data;
  
  };
  
  NodeLib.addKeyword( 'uv', function () {
  
  	return new UVNode();
  
  } );
  
  NodeLib.addKeyword( 'uv2', function () {
  
  	return new UVNode( 1 );
  
  } );
  
  export { UVNode };
  