'use strict';

let gpu = null;

module.exports = class Texture {

/**

* @desc WebGl Texture implementation in JS

* @constructor Texture

* @param {Object} texture

* @param {Array} size

* @param {Array} output

* @param {Object} webGl

*/

constructor(texture, size, output, webGl) {

this.texture = texture;

this.size = size;

this.output = output;

this.webGl = webGl;

this.kernel = null;

}

/**

* @name toArray

* @function

* @memberOf Texture#

*

* @desc Converts the Texture into a JavaScript Array.

*

* @param {Object} The `gpu` Object

*

*/

toArray(gpu) {

if (!gpu) throw new Error('You need to pass the GPU object for toArray to work.');

if (this.kernel) return this.kernel(this);

this.kernel = gpu.createKernel(function(x) {

return x[this.thread.z][this.thread.y][this.thread.x];

}).setOutput(this.output);

return this.kernel(this);

}

/**

* @name delete

* @desc Deletes the Texture.

* @function

* @memberOf Texture#

*

*

*/

delete() {

return this.webGl.deleteTexture(this.texture);

}

};