import { _Math } from '../math/Math';

/**

* @author mrdoob / http://mrdoob.com/

*/

function MultiMaterial( materials ) {

this.uuid = _Math.generateUUID();

this.type = 'MultiMaterial';

this.materials = materials instanceof Array ? materials : [];

this.visible = true;

}

MultiMaterial.prototype = {

constructor: MultiMaterial,

isMultiMaterial: true,

toJSON: function ( meta ) {

var output = {

metadata: {

version: 4.2,

type: 'material',

generator: 'MaterialExporter'

},

uuid: this.uuid,

type: this.type,

materials: []

};

var materials = this.materials;

for ( var i = 0, l = materials.length; i < l; i ++ ) {

var material = materials[ i ].toJSON( meta );

delete material.metadata;

output.materials.push( material );

}

output.visible = this.visible;

return output;

},

clone: function () {

var material = new this.constructor();

for ( var i = 0; i < this.materials.length; i ++ ) {

material.materials.push( this.materials[ i ].clone() );

}

material.visible = this.visible;

return material;

}

};

export { MultiMaterial };