three.js/examples/js/nodes/math/Math1Node.js

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

import { TempNode } from '../core/TempNode.js';

function Math1Node( a, method ) {

	TempNode.call( this );

	this.a = a;

	this.method = method || Math1Node.SIN;

};

Math1Node.RAD = 'radians';
Math1Node.DEG = 'degrees';
Math1Node.EXP = 'exp';
Math1Node.EXP2 = 'exp2';
Math1Node.LOG = 'log';
Math1Node.LOG2 = 'log2';
Math1Node.SQRT = 'sqrt';
Math1Node.INV_SQRT = 'inversesqrt';
Math1Node.FLOOR = 'floor';
Math1Node.CEIL = 'ceil';
Math1Node.NORMALIZE = 'normalize';
Math1Node.FRACT = 'fract';
Math1Node.SAT = 'saturate';
Math1Node.SIN = 'sin';
Math1Node.COS = 'cos';
Math1Node.TAN = 'tan';
Math1Node.ASIN = 'asin';
Math1Node.ACOS = 'acos';
Math1Node.ARCTAN = 'atan';
Math1Node.ABS = 'abs';
Math1Node.SIGN = 'sign';
Math1Node.LENGTH = 'length';
Math1Node.NEGATE = 'negate';
Math1Node.INVERT = 'invert';

Math1Node.prototype = Object.create( TempNode.prototype );
Math1Node.prototype.constructor = Math1Node;
Math1Node.prototype.nodeType = "Math1";

Math1Node.prototype.getType = function ( builder ) {

	switch ( this.method ) {

		case Math1Node.LENGTH:
		
			return 'f';

	}

	return this.a.getType( builder );

};

Math1Node.prototype.generate = function ( builder, output ) {

	var type = this.getType( builder ),
		result = this.a.build( builder, type );

	switch ( this.method ) {

		case Math1Node.NEGATE:
		
			result = '( -' + result + ' )';
			
			break;

		case Math1Node.INVERT:
		
			result = '( 1.0 - ' + result + ' )';
			
			break;

		default:
		
			result = this.method + '( ' + result + ' )';
			
			break;

	}

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

};

Math1Node.prototype.copy = function ( source ) {
			
	TempNode.prototype.copy.call( this, source );
	
	this.a = source.a;
	this.method = source.method;
	
};

Math1Node.prototype.toJSON = function ( meta ) {

	var data = this.getJSONNode( meta );

	if ( ! data ) {

		data = this.createJSONNode( meta );

		data.a = this.a.toJSON( meta ).uuid;
		data.method = this.method;

	}

	return data;

};

export { Math1Node };