'use strict';

const FunctionBuilderBase = require('../function-builder-base');

const WebGLFunctionNode = require('./function-node');

/**

* @class WebGLFunctionBuilder

*

* @extends FunctionBuilderBase

*

* @desc Builds webGl functions (shaders) from JavaScript function Strings

*

*/

module.exports = class WebGLFunctionBuilder extends FunctionBuilderBase {

constructor() {

super();

this.Node = WebGLFunctionNode;

}

//---------------------------------------------------------

//

// Polyfill stuff

//

//---------------------------------------------------------

// Round function used in polyfill

static round(a) {

return round(a);

}

/**

* @memberOf FunctionBuilderBase#

* @function

* @name polyfillStandardFunctions

*

* @desc Polyfill in the missing Math functions (round)

*

*/

polyfillStandardFunctions() {

this.addFunction('round', round);

}

};

function round(a) {

return Math.floor(a + 0.5);

}