(function () {
    'use strict';
    /**
     * Solarize Filter
     * Pixastic Lib - Solarize filter - v0.1.0
     * Copyright (c) 2008 Jacob Seidelin, jseidelin@nihilogic.dk, http://blog.nihilogic.dk/
     * License: [http://www.pixastic.com/lib/license.txt]
     * @function
     * @name Solarize
     * @memberof Konva.Filters
     * @param {Object} imageData
     * @example
     * node.cache();
     * node.filters([Konva.Filters.Solarize]);
     */
    Konva.Filters.Solarize = function (imageData) {
        var data = imageData.data,
            w = imageData.width,
            h = imageData.height,
            w4 = w * 4,
            y = h;

        do {
            var offsetY = (y - 1) * w4;
            var x = w;
            do {
                var offset = offsetY + (x - 1) * 4;
                var r = data[offset];
                var g = data[offset + 1];
                var b = data[offset + 2];

                if (r > 127) {
                    r = 255 - r;
                }
                if (g > 127) {
                    g = 255 - g;
                }
                if (b > 127) {
                    b = 255 - b;
                }

                data[offset] = r;
                data[offset + 1] = g;
                data[offset + 2] = b;
            } while (--x);
        } while (--y);
    };
})();