chaos/bundle.js

"use strict";

function _typeof(obj) { return obj && typeof Symbol !== "undefined" && obj.constructor === Symbol ? "symbol" : typeof obj; }

(function e(t, n, r) {
    function s(o, u) {
        if (!n[o]) {
            if (!t[o]) {
                var a = typeof require == "function" && require;if (!u && a) return a(o, !0);if (i) return i(o, !0);var f = new Error("Cannot find module '" + o + "'");throw f.code = "MODULE_NOT_FOUND", f;
            }var l = n[o] = { exports: {} };t[o][0].call(l.exports, function (e) {
                var n = t[o][1][e];return s(n ? n : e);
            }, l, l.exports, e, t, n, r);
        }return n[o].exports;
    }var i = typeof require == "function" && require;for (var o = 0; o < r.length; o++) {
        s(r[o]);
    }return s;
})({ 1: [function (require, module, exports) {
        'use strict';

        var wrapNode = require('./lib/node');

        /**
         * Import given node into `the-dom`
         *
         * @param {Node} node Node to import
         * @return {Object} Wrapped node
         */
        exports.import = function (node) {
            return wrapNode(node);
        };

        /**
         * Import an HTML document into `the-dom`
         *
         * @param {HTMLDocument} doc Document to import
         * @return {Object} A hash with doctype, body, head, html props
         */
        exports.html = function (doc) {
            return {
                create: function create(name) {
                    return doc.createElement(name);
                },
                body: wrapNode(doc.body),
                head: wrapNode(doc.head),
                html: wrapNode(doc.documentElement),
                doctype: wrapNode(doc.doctype)
            };
        };
    }, { "./lib/node": 3 }], 2: [function (require, module, exports) {
        'use strict';

        var utils = require('./utils');

        var split = utils.split;
        var iterateArray = utils.iterateArray;

        /**
         * Create an object to manipulate given node's CSS classes
         *
         * @param {HTMLElement} node Input element
         * @see `Set` documentation for behaviour information
         * @return {Object} Set-like object
         */
        var wrapClass = function wrapClass(node) {
            var res = {
                add: function add(el) {
                    if (!this.has(el)) {
                        var classes = split(node.className);

                        classes.push(el);
                        node.className = classes.join(' ');
                    }

                    return this;
                },

                delete: function _delete(el) {
                    var classes = split(node.className),
                        pos = classes.indexOf(el);

                    if (pos > -1) {
                        classes.splice(pos, 1);
                        node.className = classes.join(' ');
                        return true;
                    }

                    return false;
                },

                has: function has(el) {
                    return split(node.className).indexOf(el) !== -1;
                },
                clear: function clear() {
                    return node.className = '';
                },

                get size() {
                    return split(node.className).length;
                },

                keys: function keys() {
                    return iterateArray(split(node.className));
                },
                values: function values() {
                    return iterateArray(split(node.className));
                },
                entries: function entries() {
                    return iterateArray(split(node.className).map(function (el) {
                        return [el, el];
                    }));
                },

                forEach: function forEach(callback, thisArg) {
                    var _iteratorNormalCompletion = true;
                    var _didIteratorError = false;
                    var _iteratorError = undefined;

                    try {
                        for (var _iterator = this[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
                            var cls = _step.value;

                            callback.call(thisArg, cls, cls, this);
                        }
                    } catch (err) {
                        _didIteratorError = true;
                        _iteratorError = err;
                    } finally {
                        try {
                            if (!_iteratorNormalCompletion && _iterator.return) {
                                _iterator.return();
                            }
                        } finally {
                            if (_didIteratorError) {
                                throw _iteratorError;
                            }
                        }
                    }
                }
            };

            res[Symbol.iterator] = res.values;
            return res;
        };

        module.exports = wrapClass;
    }, { "./utils": 5 }], 3: [function (require, module, exports) {
        'use strict';

        var wrapClass = require('./class');
        var wrapStyle = require('./style');
        var split = require('./utils').split;

        /**
         * Ensure a node is not wrapped before using it in native methods
         *
         * @param {Node|Object} node A node, wrapped or not
         * @return {Node} Unwrapped node
         */
        var unwrap = function unwrap(node) {
            return (typeof node === "undefined" ? "undefined" : _typeof(node)) !== 'object' || node === null || !node.node ? node : node.node;
        };

        /**
         * Turn a NodeList/HTMLCollection into an array
         * for easy manipulation
         *
         * @param {NodeList|HTMLCollection} list Input collection
         * @return {Array} Wrapping array
         */
        var wrapList = function wrapList(list) {
            var length = list.length;
            var result = [];

            for (var i = 0; i < length; i += 1) {
                result.push(wrapNode(list.item(i)));
            }

            return Object.assign(result, {
                on: function on(evts, handler) {
                    result.forEach(function (node) {
                        return node.on(evts, handler);
                    });
                },

                off: function off(evts, handler) {
                    result.forEach(function (node) {
                        return node.off(evts, handler);
                    });
                }
            });
        };

        /**
         * Create an object of shortcuts to manipulate
         * given node more easily
         *
         * @param {Node} Input node
         * @return {Object} DOM shortcuts
         */
        var wrapNode = function wrapNode(node) {
            if (node === null || (typeof node === "undefined" ? "undefined" : _typeof(node)) !== 'object') {
                return null;
            }

            return {
                node: node,

                // search among children
                find: function find(query) {
                    return wrapNode(node.querySelector(query));
                },
                findAll: function findAll(query) {
                    return wrapList(node.querySelectorAll(query));
                },

                // access node's relative tree (parent, children, siblings)
                equal: function equal(el) {
                    return unwrap(el) === node;
                },

                get following() {
                    return wrapNode(node.nextElementSibling);
                },

                get preceding() {
                    return wrapNode(node.previousElementSibling);
                },

                get parent() {
                    return wrapNode(node.parentNode);
                },

                get children() {
                    return wrapList(node.children);
                },

                // check relative positions
                precedes: function precedes(el) {
                    return !!(unwrap(el).compareDocumentPosition(node) & 2);
                },
                follows: function follows(el) {
                    return !!(unwrap(el).compareDocumentPosition(node) & 4);
                },
                contains: function contains(el) {
                    return !!(unwrap(el).compareDocumentPosition(node) & 8);
                },
                contained: function contained(el) {
                    return !!(unwrap(el).compareDocumentPosition(node) & 16);
                },

                // get and set element attributes
                get name() {
                    return node.tagName.toLowerCase().trim();
                },

                get type() {
                    switch (node.nodeType) {
                        case 1:
                            return 'element';
                        case 3:
                            return 'text';
                        case 7:
                            return 'processing-instruction';
                        case 8:
                            return 'comment';
                        case 9:
                            return 'document';
                        case 10:
                            return 'document-type';
                        case 11:
                            return 'document-fragment';
                        default:
                            return null;
                    }
                },

                getAttr: function getAttr(attr) {
                    return node.getAttribute(attr);
                },
                setAttr: function setAttr(attr, value) {
                    return node.setAttribute(attr, value);
                },

                // place an element in the DOM tree
                append: function append(subnode) {
                    return node.appendChild(unwrap(subnode));
                },
                attach: function attach(parent) {
                    return unwrap(parent).appendChild(node);
                },
                remove: function remove(child) {
                    if (child) {
                        node.removeChild(unwrap(child));
                        return;
                    }

                    node.parentNode.removeChild(node);
                },

                // manipulate element's CSS (see wrapClass, wrapStyle)
                class: wrapClass(node),
                style: wrapStyle(node),

                // change an element's content
                get text() {
                    return node.textContent;
                },

                set text(val) {
                    node.textContent = val;
                },

                get html() {
                    return node.innerHTML;
                },

                set html(val) {
                    node.innerHTML = val;
                },

                // listen to events
                on: function on(evts, handler) {
                    split(evts).forEach(function (evt) {
                        node.addEventListener(evt, handler);
                    });
                },

                off: function off(evts, handler) {
                    split(evts).forEach(function (evt) {
                        node.removeEventListener(evt, handler);
                    });
                }
            };
        };

        module.exports = wrapNode;
    }, { "./class": 2, "./style": 4, "./utils": 5 }], 4: [function (require, module, exports) {
        'use strict';

        var iterateArray = require('./utils').iterateArray;

        /**
         * Create an object to manipulate given node's CSS styles
         *
         * @param {HTMLElement} node Input element
         * @see `Map` documentation for behaviour information
         * @return {Object} Map-like object
         */
        var wrapStyle = function wrapStyle(node) {
            var res = {
                set: function set(prop, value) {
                    node.style.setProperty(prop, value);
                    return this;
                },

                delete: function _delete(prop) {
                    return node.style.removeProperty(prop) !== '';
                },
                has: function has(prop) {
                    return [].slice.call(node.style).indexOf(prop) > -1;
                },

                get: function get(prop) {
                    var result = node.style.getPropertyValue(prop);

                    if (result.trim() === '') {
                        return undefined;
                    }

                    return result;
                },

                clear: function clear() {
                    var length = node.style.length;

                    for (var i = 0; i < length; i += 1) {
                        node.style.removeProperty(node.style[i]);
                    }
                },

                get size() {
                    return node.style.length;
                },

                keys: function keys() {
                    return iterateArray([].slice.call(node.style));
                },
                values: function values() {
                    return iterateArray([].slice.call(node.style).map(function (prop) {
                        return node.style.getPropertyValue(prop);
                    }));
                },
                entries: function entries() {
                    return iterateArray([].slice.call(node.style).map(function (prop) {
                        return [prop, node.style.getPropertyValue(prop)];
                    }));
                },

                forEach: function forEach(callback, thisArg) {
                    var _iteratorNormalCompletion2 = true;
                    var _didIteratorError2 = false;
                    var _iteratorError2 = undefined;

                    try {
                        for (var _iterator2 = this[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {
                            var cls = _step2.value;

                            callback.call(thisArg, cls, cls, this);
                        }
                    } catch (err) {
                        _didIteratorError2 = true;
                        _iteratorError2 = err;
                    } finally {
                        try {
                            if (!_iteratorNormalCompletion2 && _iterator2.return) {
                                _iterator2.return();
                            }
                        } finally {
                            if (_didIteratorError2) {
                                throw _iteratorError2;
                            }
                        }
                    }
                }
            };

            res[Symbol.iterator] = res.values;
            return res;
        };

        module.exports = wrapStyle;
    }, { "./utils": 5 }], 5: [function (require, module, exports) {
        'use strict';

        var whitespace = /\s+/g;

        /**
         * Split a list of whitespace separated tokens,
         * excluding empty ones
         *
         * @param {string} str Input string
         * @return {Array} Split tokens
         */
        exports.split = function (str) {
            return str.split(whitespace).filter(function (el) {
                return el.trim().length;
            });
        };

        /**
         * Create an iterator on an array
         *
         * @param {Array} arr Array to iterate on
         * @return {Object} Iterator for given array
         */
        exports.iterateArray = function (arr) {
            var _next = 0;

            return {
                next: function next() {
                    return _next < arr.length ? { value: arr[_next++], done: false } : { done: true };
                }
            };
        };
    }, {}], 6: [function (require, module, exports) {
        'use strict';

        var _theDom = require('the-dom');

        var _utils = require('./utils');

        var _html = (0, _theDom.html)(document);

        var body = _html.body;
        var create = _html.create;

        var content = body.find('#content');
        var plotting = body.find('#plotting');
        var ctx = plotting.node.getContext('2d');

        var padding = 40; // padding between the canvas edges and the points
        var image = undefined,
            width = undefined,
            height = undefined;
        var lastUpdate = -Infinity;

        /**
         * Create a fractal of given width, height, based on
         * a polygon of given amount of vertices, using the
         * chaos game applied with given fraction
         *
         * @param {number} width Fractal width
         * @param {number} height Fractal height
         * @param {number} fraction Fraction to use
         * @param {Array} colors Color of each vertex
         * @return {ImageData} Generated pixel data
         */
        var chaos = function chaos(width, height, fraction, colors) {
            var cx = Math.floor(width / 2);
            var cy = Math.floor(height / 2);
            var radius = Math.min(cx, cy);

            var count = colors.length;
            var vertices = [];
            var angleStep = 2 * Math.PI / count;
            var initialAngle = undefined;

            // creating 0-width image data will throw an error
            if (width <= 0 || height <= 0) {
                return ctx.createImageData(1, 1);
            }

            var image = ctx.createImageData(width, height);
            var data = image.data;

            // we will rotate around an inscribed circle to calculate
            // the vertices' positions. We adapt the initial angle so
            // that usual polygons look better
            if (count === 3) {
                initialAngle = -Math.PI / 2;
            } else if (count === 4) {
                initialAngle = Math.PI / 4;
            } else {
                initialAngle = 0;
            }

            for (var i = 0; i < count; i += 1) {
                var current = angleStep * i + initialAngle;

                vertices.push([Math.floor(Math.cos(current) * radius + cx), Math.floor(Math.sin(current) * radius + cy)]);
            }

            // now we apply the chaos algorithm:
            // for any point, the next point is a `fraction` of the
            // distance between it and a random vertex
            var point = vertices[0];
            var iterations = 200000;
            var drop = 1000;

            while (iterations--) {
                var vertexNumber = (0, _utils.randomNumber)(0, count);
                var vertex = vertices[vertexNumber],
                    color = colors[vertexNumber];

                point = [Math.floor((point[0] - vertex[0]) * fraction + vertex[0]), Math.floor((point[1] - vertex[1]) * fraction + vertex[1])];

                // skip the first 1000 points
                if (drop === 0) {
                    var i = (point[1] * width + point[0]) * 4;

                    data[i] = color[0];
                    data[i + 1] = color[1];
                    data[i + 2] = color[2];
                    data[i + 3] = 255;
                } else {
                    drop--;
                }
            }

            return image;
        };

        /**
         * Render the scene, recalculating the points
         * positions if they need to
         *
         * @return {null}
         */
        var render = function render() {
            // only recalculate every 16.67 ms
            if (+new Date() - lastUpdate > 16.67) {
                image = chaos(width - 2 * padding, height - 2 * padding, 1 / 2, [[255, 0, 0], [0, 255, 0], [0, 0, 255]]);

                lastUpdate = +new Date();
            }

            ctx.clearRect(0, 0, width, height);
            ctx.putImageData(image, padding, padding);
        };

        /**
         * Resize the canvas to fit the new
         * window size and redraw the scene
         *
         * @return {null}
         */
        var resize = function resize() {
            width = content.node.clientWidth;
            height = content.node.clientHeight;

            plotting.setAttr('width', width);
            plotting.setAttr('height', height);

            render();
        };

        window.onresize = resize;
        resize();
    }, { "./utils": 7, "the-dom": 1 }], 7: [function (require, module, exports) {
        'use strict'

        /**
         * Get a random whole number
         *
         * @param {number} min Minimal value for the number
         * @param {number} max Maximal value for the number (excluded)
         * @return {number} Random number
         */
        ;

        Object.defineProperty(exports, "__esModule", {
            value: true
        });
        var randomNumber = exports.randomNumber = function randomNumber(min, max) {
            return Math.floor(Math.random() * (max - min)) + min;
        };

        /**
         * Generate a random color
         *
         * @return {Array} RGB components
         */
        var randomColor = exports.randomColor = function randomColor() {
            var color = [];

            for (var i = 0; i < 3; i++) {
                color.push(Math.round(Math.random().toFixed(2) * 255));
            }

            return color;
        };

        /**
         * Convert a decimal number to its hexadecimal representation
         *
         * @param {number} input Number to be converted
         * @return {string} Number representation
         */
        var hex = function hex(input) {
            var hex = parseInt(input, 10).toString(16);
            return hex.length === 1 ? '0' + hex : hex;
        };

        /**
         * Convert a RGB color to its hexadecimal representation
         *
         * @param {Array} color RGB color
         * @return {string} Hex representation
         */
        var rgbToHex = exports.rgbToHex = function rgbToHex(color) {
            return '#' + hex(color[0]) + hex(color[1]) + hex(color[2]);
        };
    }, {}] }, {}, [6]);