three.js/examples/js/nodes/core/FunctionCallNode.js

/**
 * @author sunag / http://www.sunag.com.br/
 */

THREE.FunctionCallNode = function ( func, inputs ) {

	THREE.TempNode.call( this );

	this.setFunction( func, inputs );

};

THREE.FunctionCallNode.prototype = Object.create( THREE.TempNode.prototype );
THREE.FunctionCallNode.prototype.constructor = THREE.FunctionCallNode;
THREE.FunctionCallNode.prototype.nodeType = "FunctionCall";

THREE.FunctionCallNode.prototype.setFunction = function ( func, inputs ) {

	this.value = func;
	this.inputs = inputs || [];

};

THREE.FunctionCallNode.prototype.getFunction = function () {

	return this.value;

};

THREE.FunctionCallNode.prototype.getType = function ( builder ) {

	return this.value.getType( builder );

};

THREE.FunctionCallNode.prototype.generate = function ( builder, output ) {

	var material = builder.material;

	var type = this.getType( builder );
	var func = this.value;

	var code = func.build( builder, output ) + '( ';
	var params = [];

	for ( var i = 0; i < func.inputs.length; i ++ ) {

		var inpt = func.inputs[ i ];
		var param = this.inputs[ i ] || this.inputs[ inpt.name ];

		params.push( param.build( builder, builder.getTypeByFormat( inpt.type ) ) );

	}

	code += params.join( ', ' ) + ' )';

	return builder.format( code, type, output );

};

THREE.FunctionCallNode.prototype.copy = function ( source ) {
			
	THREE.GLNode.prototype.copy.call( this, source );
	
	for ( var prop in source.inputs ) {

		this.inputs[ prop ] = source.inputs[ prop ];

	}

	this.value = source.value;
	
};

THREE.FunctionCallNode.prototype.toJSON = function ( meta ) {

	var data = this.getJSONNode( meta );

	if ( ! data ) {

		var func = this.value;

		data = this.createJSONNode( meta );

		data.value = this.value.toJSON( meta ).uuid;

		if ( func.inputs.length ) {

			data.inputs = {};

			for ( var i = 0; i < func.inputs.length; i ++ ) {

				var inpt = func.inputs[ i ];
				var node = this.inputs[ i ] || this.inputs[ inpt.name ];

				data.inputs[ inpt.name ] = node.toJSON( meta ).uuid;

			}

		}

	}

	return data;

};