lwip-pixels/lib/index.js

Get a matrix of pixels from a lwip image object.

"use strict";

var Pixel = require("pixel-class");

/**
 * getPixels
 * Builts a pixel matrix from the input `lwip` object.
 *
 * @name getPixels
 * @function
 * @param {lwip} image The `lwip` object.
 * @return {Array} An array of arrays of [`Pixel`](https://github.com/IonicaBizau/pixel-class) instances.
 */
module.exports = function getPixels(image) {

    var pixels = [],
        height = image.height(),
        width = image.width(),
        cRow = [];

    for (var y = 0; y < height; ++y) {
        for (var x = 0; x < width; ++x) {
            cRow.push(new Pixel(image.getPixel(x, y)));
        }
        pixels.push(cRow);
        cRow = [];
    }

    return pixels;
};