From 72ed09460315afabd4914a170380b04cb36cc854 Mon Sep 17 00:00:00 2001
From: 12913378 <harry.buttenshaw@student.uts.edu.au>
Date: Sun, 27 Oct 2019 19:11:33 +1100
Subject: [PATCH] Upload New File
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+/*! p5.js v0.9.0 July 01, 2019 */
+/**
+ * <p>The web is much more than just canvas and p5.dom makes it easy to interact
+ * with other HTML5 objects, including text, hyperlink, image, input, video,
+ * audio, and webcam.</p>
+ * <p>There is a set of creation methods, DOM manipulation methods, and
+ * an extended <a href="#/p5.Element">p5.Element</a> that supports a range of HTML elements. See the
+ * <a href='https://github.com/processing/p5.js/wiki/Beyond-the-canvas'>
+ * beyond the canvas tutorial</a> for a full overview of how this addon works.
+ *
+ * <p>Methods and properties shown in black are part of the p5.js core, items in
+ * blue are part of the p5.dom library. You will need to include an extra file
+ * in order to access the blue functions. See the
+ * <a href='http://p5js.org/libraries/#using-a-library'>using a library</a>
+ * section for information on how to include this library. p5.dom comes with
+ * <a href='http://p5js.org/download'>p5 complete</a> or you can download the single file
+ * <a href='https://raw.githubusercontent.com/lmccart/p5.js/master/lib/addons/p5.dom.js'>
+ * here</a>.</p>
+ * <p>See <a href='https://github.com/processing/p5.js/wiki/Beyond-the-canvas'>tutorial: beyond the canvas</a>
+ * for more info on how to use this library.</a>
+ *
+ * @module p5.dom
+ * @submodule p5.dom
+ * @for p5
+ * @main
+ */
+
+(function(root, factory) {
+ if (typeof define === 'function' && define.amd)
+ define('p5.dom', ['p5'], function(p5) {
+ factory(p5);
+ });
+ else if (typeof exports === 'object') factory(require('../p5'));
+ else factory(root['p5']);
+})(this, function(p5) {
+ // =============================================================================
+ // p5 additions
+ // =============================================================================
+
+ /**
+ * Searches the page for an element with the given ID, class, or tag name (using the '#' or '.'
+ * prefixes to specify an ID or class respectively, and none for a tag) and returns it as
+ * a <a href="#/p5.Element">p5.Element</a>. If a class or tag name is given with more than 1 element,
+ * only the first element will be returned.
+ * The DOM node itself can be accessed with .elt.
+ * Returns null if none found. You can also specify a container to search within.
+ *
+ * @method select
+ * @param {String} name id, class, or tag name of element to search for
+ * @param {String|p5.Element|HTMLElement} [container] id, <a href="#/p5.Element">p5.Element</a>, or
+ * HTML element to search within
+ * @return {p5.Element|null} <a href="#/p5.Element">p5.Element</a> containing node found
+ * @example
+ * <div ><code class='norender'>
+ * function setup() {
+ * createCanvas(100, 100);
+ * //translates canvas 50px down
+ * select('canvas').position(100, 100);
+ * }
+ * </code></div>
+ * <div><code class='norender'>
+ * // these are all valid calls to select()
+ * var a = select('#moo');
+ * var b = select('#blah', '#myContainer');
+ * var c, e;
+ * if (b) {
+ * c = select('#foo', b);
+ * }
+ * var d = document.getElementById('beep');
+ * if (d) {
+ * e = select('p', d);
+ * }
+ * [a, b, c, d, e]; // unused
+ * </code></div>
+ *
+ */
+ p5.prototype.select = function(e, p) {
+ p5._validateParameters('select', arguments);
+ var res = null;
+ var container = getContainer(p);
+ if (e[0] === '.') {
+ e = e.slice(1);
+ res = container.getElementsByClassName(e);
+ if (res.length) {
+ res = res[0];
+ } else {
+ res = null;
+ }
+ } else if (e[0] === '#') {
+ e = e.slice(1);
+ res = container.getElementById(e);
+ } else {
+ res = container.getElementsByTagName(e);
+ if (res.length) {
+ res = res[0];
+ } else {
+ res = null;
+ }
+ }
+ if (res) {
+ return this._wrapElement(res);
+ } else {
+ return null;
+ }
+ };
+
+ /**
+ * Searches the page for elements with the given class or tag name (using the '.' prefix
+ * to specify a class and no prefix for a tag) and returns them as <a href="#/p5.Element">p5.Element</a>s
+ * in an array.
+ * The DOM node itself can be accessed with .elt.
+ * Returns an empty array if none found.
+ * You can also specify a container to search within.
+ *
+ * @method selectAll
+ * @param {String} name class or tag name of elements to search for
+ * @param {String} [container] id, <a href="#/p5.Element">p5.Element</a>, or HTML element to search within
+ * @return {p5.Element[]} Array of <a href="#/p5.Element">p5.Element</a>s containing nodes found
+ * @example
+ * <div class='norender'><code>
+ * function setup() {
+ * createButton('btn');
+ * createButton('2nd btn');
+ * createButton('3rd btn');
+ * var buttons = selectAll('button');
+ *
+ * for (var i = 0; i < buttons.length; i++) {
+ * buttons[i].size(100, 100);
+ * }
+ * }
+ * </code></div>
+ * <div class='norender'><code>
+ * // these are all valid calls to selectAll()
+ * var a = selectAll('.moo');
+ * a = selectAll('div');
+ * a = selectAll('button', '#myContainer');
+ *
+ * var d = select('#container');
+ * a = selectAll('p', d);
+ *
+ * var f = document.getElementById('beep');
+ * a = select('.blah', f);
+ *
+ * a; // unused
+ * </code></div>
+ *
+ */
+ p5.prototype.selectAll = function(e, p) {
+ p5._validateParameters('selectAll', arguments);
+ var arr = [];
+ var res;
+ var container = getContainer(p);
+ if (e[0] === '.') {
+ e = e.slice(1);
+ res = container.getElementsByClassName(e);
+ } else {
+ res = container.getElementsByTagName(e);
+ }
+ if (res) {
+ for (var j = 0; j < res.length; j++) {
+ var obj = this._wrapElement(res[j]);
+ arr.push(obj);
+ }
+ }
+ return arr;
+ };
+
+ /**
+ * Helper function for select and selectAll
+ */
+ function getContainer(p) {
+ var container = document;
+ if (typeof p === 'string' && p[0] === '#') {
+ p = p.slice(1);
+ container = document.getElementById(p) || document;
+ } else if (p instanceof p5.Element) {
+ container = p.elt;
+ } else if (p instanceof HTMLElement) {
+ container = p;
+ }
+ return container;
+ }
+
+ /**
+ * Helper function for getElement and getElements.
+ */
+ p5.prototype._wrapElement = function(elt) {
+ var children = Array.prototype.slice.call(elt.children);
+ if (elt.tagName === 'INPUT' && elt.type === 'checkbox') {
+ var converted = new p5.Element(elt, this);
+ converted.checked = function() {
+ if (arguments.length === 0) {
+ return this.elt.checked;
+ } else if (arguments[0]) {
+ this.elt.checked = true;
+ } else {
+ this.elt.checked = false;
+ }
+ return this;
+ };
+ return converted;
+ } else if (elt.tagName === 'VIDEO' || elt.tagName === 'AUDIO') {
+ return new p5.MediaElement(elt, this);
+ } else if (elt.tagName === 'SELECT') {
+ return this.createSelect(new p5.Element(elt, this));
+ } else if (
+ children.length > 0 &&
+ children.every(function(c) {
+ return c.tagName === 'INPUT' || c.tagName === 'LABEL';
+ })
+ ) {
+ return this.createRadio(new p5.Element(elt, this));
+ } else {
+ return new p5.Element(elt, this);
+ }
+ };
+
+ /**
+ * Removes all elements created by p5, except any canvas / graphics
+ * elements created by <a href="#/p5/createCanvas">createCanvas</a> or <a href="#/p5/createGraphics">createGraphics</a>.
+ * Event handlers are removed, and element is removed from the DOM.
+ * @method removeElements
+ * @example
+ * <div class='norender'><code>
+ * function setup() {
+ * createCanvas(100, 100);
+ * createDiv('this is some text');
+ * createP('this is a paragraph');
+ * }
+ * function mousePressed() {
+ * removeElements(); // this will remove the div and p, not canvas
+ * }
+ * </code></div>
+ *
+ */
+ p5.prototype.removeElements = function(e) {
+ p5._validateParameters('removeElements', arguments);
+ for (var i = 0; i < this._elements.length; i++) {
+ if (!(this._elements[i].elt instanceof HTMLCanvasElement)) {
+ this._elements[i].remove();
+ }
+ }
+ };
+
+ /**
+ * The .<a href="#/p5.Element/changed">changed()</a> function is called when the value of an
+ * element changes.
+ * This can be used to attach an element specific event listener.
+ *
+ * @method changed
+ * @param {Function|Boolean} fxn function to be fired when the value of
+ * an element changes.
+ * if `false` is passed instead, the previously
+ * firing function will no longer fire.
+ * @chainable
+ * @example
+ * <div><code>
+ * var sel;
+ *
+ * function setup() {
+ * textAlign(CENTER);
+ * background(200);
+ * sel = createSelect();
+ * sel.position(10, 10);
+ * sel.option('pear');
+ * sel.option('kiwi');
+ * sel.option('grape');
+ * sel.changed(mySelectEvent);
+ * }
+ *
+ * function mySelectEvent() {
+ * var item = sel.value();
+ * background(200);
+ * text("it's a " + item + '!', 50, 50);
+ * }
+ * </code></div>
+ *
+ * <div><code>
+ * var checkbox;
+ * var cnv;
+ *
+ * function setup() {
+ * checkbox = createCheckbox(' fill');
+ * checkbox.changed(changeFill);
+ * cnv = createCanvas(100, 100);
+ * cnv.position(0, 30);
+ * noFill();
+ * }
+ *
+ * function draw() {
+ * background(200);
+ * ellipse(50, 50, 50, 50);
+ * }
+ *
+ * function changeFill() {
+ * if (checkbox.checked()) {
+ * fill(0);
+ * } else {
+ * noFill();
+ * }
+ * }
+ * </code></div>
+ *
+ * @alt
+ * dropdown: pear, kiwi, grape. When selected text "its a" + selection shown.
+ *
+ */
+ p5.Element.prototype.changed = function(fxn) {
+ p5.Element._adjustListener('change', fxn, this);
+ return this;
+ };
+
+ /**
+ * The .<a href="#/p5.Element/input">input()</a> function is called when any user input is
+ * detected with an element. The input event is often used
+ * to detect keystrokes in a input element, or changes on a
+ * slider element. This can be used to attach an element specific
+ * event listener.
+ *
+ * @method input
+ * @param {Function|Boolean} fxn function to be fired when any user input is
+ * detected within the element.
+ * if `false` is passed instead, the previously
+ * firing function will no longer fire.
+ * @chainable
+ * @example
+ * <div class='norender'><code>
+ * // Open your console to see the output
+ * function setup() {
+ * var inp = createInput('');
+ * inp.input(myInputEvent);
+ * }
+ *
+ * function myInputEvent() {
+ * console.log('you are typing: ', this.value());
+ * }
+ * </code></div>
+ *
+ * @alt
+ * no display.
+ *
+ */
+ p5.Element.prototype.input = function(fxn) {
+ p5.Element._adjustListener('input', fxn, this);
+ return this;
+ };
+
+ /**
+ * Helpers for create methods.
+ */
+ function addElement(elt, pInst, media) {
+ var node = pInst._userNode ? pInst._userNode : document.body;
+ node.appendChild(elt);
+ var c = media
+ ? new p5.MediaElement(elt, pInst)
+ : new p5.Element(elt, pInst);
+ pInst._elements.push(c);
+ return c;
+ }
+
+ /**
+ * Creates a <div></div> element in the DOM with given inner HTML.
+ * Appends to the container node if one is specified, otherwise
+ * appends to body.
+ *
+ * @method createDiv
+ * @param {String} [html] inner HTML for element created
+ * @return {p5.Element} pointer to <a href="#/p5.Element">p5.Element</a> holding created node
+ * @example
+ * <div class='norender'><code>
+ * createDiv('this is some text');
+ * </code></div>
+ */
+
+ /**
+ * Creates a <p></p> element in the DOM with given inner HTML. Used
+ * for paragraph length text.
+ * Appends to the container node if one is specified, otherwise
+ * appends to body.
+ *
+ * @method createP
+ * @param {String} [html] inner HTML for element created
+ * @return {p5.Element} pointer to <a href="#/p5.Element">p5.Element</a> holding created node
+ * @example
+ * <div class='norender'><code>
+ * createP('this is some text');
+ * </code></div>
+ */
+
+ /**
+ * Creates a <span></span> element in the DOM with given inner HTML.
+ * Appends to the container node if one is specified, otherwise
+ * appends to body.
+ *
+ * @method createSpan
+ * @param {String} [html] inner HTML for element created
+ * @return {p5.Element} pointer to <a href="#/p5.Element">p5.Element</a> holding created node
+ * @example
+ * <div class='norender'><code>
+ * createSpan('this is some text');
+ * </code></div>
+ */
+ var tags = ['div', 'p', 'span'];
+ tags.forEach(function(tag) {
+ var method = 'create' + tag.charAt(0).toUpperCase() + tag.slice(1);
+ p5.prototype[method] = function(html) {
+ var elt = document.createElement(tag);
+ elt.innerHTML = typeof html === 'undefined' ? '' : html;
+ return addElement(elt, this);
+ };
+ });
+
+ /**
+ * Creates an <img> element in the DOM with given src and
+ * alternate text.
+ * Appends to the container node if one is specified, otherwise
+ * appends to body.
+ *
+ * @method createImg
+ * @param {String} src src path or url for image
+ * @param {String} [alt] alternate text to be used if image does not load
+ * @param {Function} [successCallback] callback to be called once image data is loaded
+ * @return {p5.Element} pointer to <a href="#/p5.Element">p5.Element</a> holding created node
+ * @example
+ * <div class='norender'><code>
+ * createImg('http://p5js.org/img/asterisk-01.png');
+ * </code></div>
+ */
+ /**
+ * @method createImg
+ * @param {String} src
+ * @param {Function} successCallback
+ * @return {Object|p5.Element}
+ */
+ p5.prototype.createImg = function() {
+ p5._validateParameters('createImg', arguments);
+ var elt = document.createElement('img');
+ elt.crossOrigin = 'Anonymous';
+ var args = arguments;
+ var self;
+ var setAttrs = function() {
+ self.width = elt.offsetWidth || elt.width;
+ self.height = elt.offsetHeight || elt.height;
+ if (args.length > 1 && typeof args[1] === 'function') {
+ self.fn = args[1];
+ self.fn();
+ } else if (args.length > 1 && typeof args[2] === 'function') {
+ self.fn = args[2];
+ self.fn();
+ }
+ };
+ elt.src = args[0];
+ if (args.length > 1 && typeof args[1] === 'string') {
+ elt.alt = args[1];
+ }
+ elt.onload = function() {
+ setAttrs();
+ };
+ self = addElement(elt, this);
+ return self;
+ };
+
+ /**
+ * Creates an <a></a> element in the DOM for including a hyperlink.
+ * Appends to the container node if one is specified, otherwise
+ * appends to body.
+ *
+ * @method createA
+ * @param {String} href url of page to link to
+ * @param {String} html inner html of link element to display
+ * @param {String} [target] target where new link should open,
+ * could be _blank, _self, _parent, _top.
+ * @return {p5.Element} pointer to <a href="#/p5.Element">p5.Element</a> holding created node
+ * @example
+ * <div class='norender'><code>
+ * createA('http://p5js.org/', 'this is a link');
+ * </code></div>
+ */
+ p5.prototype.createA = function(href, html, target) {
+ p5._validateParameters('createA', arguments);
+ var elt = document.createElement('a');
+ elt.href = href;
+ elt.innerHTML = html;
+ if (target) elt.target = target;
+ return addElement(elt, this);
+ };
+
+ /** INPUT **/
+
+ /**
+ * Creates a slider <input></input> element in the DOM.
+ * Use .size() to set the display length of the slider.
+ * Appends to the container node if one is specified, otherwise
+ * appends to body.
+ *
+ * @method createSlider
+ * @param {Number} min minimum value of the slider
+ * @param {Number} max maximum value of the slider
+ * @param {Number} [value] default value of the slider
+ * @param {Number} [step] step size for each tick of the slider (if step is set to 0, the slider will move continuously from the minimum to the maximum value)
+ * @return {p5.Element} pointer to <a href="#/p5.Element">p5.Element</a> holding created node
+ * @example
+ * <div><code>
+ * var slider;
+ * function setup() {
+ * slider = createSlider(0, 255, 100);
+ * slider.position(10, 10);
+ * slider.style('width', '80px');
+ * }
+ *
+ * function draw() {
+ * var val = slider.value();
+ * background(val);
+ * }
+ * </code></div>
+ *
+ * <div><code>
+ * var slider;
+ * function setup() {
+ * colorMode(HSB);
+ * slider = createSlider(0, 360, 60, 40);
+ * slider.position(10, 10);
+ * slider.style('width', '80px');
+ * }
+ *
+ * function draw() {
+ * var val = slider.value();
+ * background(val, 100, 100, 1);
+ * }
+ * </code></div>
+ */
+ p5.prototype.createSlider = function(min, max, value, step) {
+ p5._validateParameters('createSlider', arguments);
+ var elt = document.createElement('input');
+ elt.type = 'range';
+ elt.min = min;
+ elt.max = max;
+ if (step === 0) {
+ elt.step = 0.000000000000000001; // smallest valid step
+ } else if (step) {
+ elt.step = step;
+ }
+ if (typeof value === 'number') elt.value = value;
+ return addElement(elt, this);
+ };
+
+ /**
+ * Creates a <button></button> element in the DOM.
+ * Use .size() to set the display size of the button.
+ * Use .mousePressed() to specify behavior on press.
+ * Appends to the container node if one is specified, otherwise
+ * appends to body.
+ *
+ * @method createButton
+ * @param {String} label label displayed on the button
+ * @param {String} [value] value of the button
+ * @return {p5.Element} pointer to <a href="#/p5.Element">p5.Element</a> holding created node
+ * @example
+ * <div class='norender'><code>
+ * var button;
+ * function setup() {
+ * createCanvas(100, 100);
+ * background(0);
+ * button = createButton('click me');
+ * button.position(19, 19);
+ * button.mousePressed(changeBG);
+ * }
+ *
+ * function changeBG() {
+ * var val = random(255);
+ * background(val);
+ * }
+ * </code></div>
+ */
+ p5.prototype.createButton = function(label, value) {
+ p5._validateParameters('createButton', arguments);
+ var elt = document.createElement('button');
+ elt.innerHTML = label;
+ if (value) elt.value = value;
+ return addElement(elt, this);
+ };
+
+ /**
+ * Creates a checkbox <input></input> element in the DOM.
+ * Calling .checked() on a checkbox returns if it is checked or not
+ *
+ * @method createCheckbox
+ * @param {String} [label] label displayed after checkbox
+ * @param {boolean} [value] value of the checkbox; checked is true, unchecked is false
+ * @return {p5.Element} pointer to <a href="#/p5.Element">p5.Element</a> holding created node
+ * @example
+ * <div class='norender'><code>
+ * var checkbox;
+ *
+ * function setup() {
+ * checkbox = createCheckbox('label', false);
+ * checkbox.changed(myCheckedEvent);
+ * }
+ *
+ * function myCheckedEvent() {
+ * if (this.checked()) {
+ * console.log('Checking!');
+ * } else {
+ * console.log('Unchecking!');
+ * }
+ * }
+ * </code></div>
+ */
+ p5.prototype.createCheckbox = function() {
+ p5._validateParameters('createCheckbox', arguments);
+ var elt = document.createElement('div');
+ var checkbox = document.createElement('input');
+ checkbox.type = 'checkbox';
+ elt.appendChild(checkbox);
+ //checkbox must be wrapped in p5.Element before label so that label appears after
+ var self = addElement(elt, this);
+ self.checked = function() {
+ var cb = self.elt.getElementsByTagName('input')[0];
+ if (cb) {
+ if (arguments.length === 0) {
+ return cb.checked;
+ } else if (arguments[0]) {
+ cb.checked = true;
+ } else {
+ cb.checked = false;
+ }
+ }
+ return self;
+ };
+ this.value = function(val) {
+ self.value = val;
+ return this;
+ };
+ if (arguments[0]) {
+ var ran = Math.random()
+ .toString(36)
+ .slice(2);
+ var label = document.createElement('label');
+ checkbox.setAttribute('id', ran);
+ label.htmlFor = ran;
+ self.value(arguments[0]);
+ label.appendChild(document.createTextNode(arguments[0]));
+ elt.appendChild(label);
+ }
+ if (arguments[1]) {
+ checkbox.checked = true;
+ }
+ return self;
+ };
+
+ /**
+ * Creates a dropdown menu <select></select> element in the DOM.
+ * It also helps to assign select-box methods to <a href="#/p5.Element">p5.Element</a> when selecting existing select box
+ * @method createSelect
+ * @param {boolean} [multiple] true if dropdown should support multiple selections
+ * @return {p5.Element}
+ * @example
+ * <div><code>
+ * var sel;
+ *
+ * function setup() {
+ * textAlign(CENTER);
+ * background(200);
+ * sel = createSelect();
+ * sel.position(10, 10);
+ * sel.option('pear');
+ * sel.option('kiwi');
+ * sel.option('grape');
+ * sel.changed(mySelectEvent);
+ * }
+ *
+ * function mySelectEvent() {
+ * var item = sel.value();
+ * background(200);
+ * text('It is a ' + item + '!', 50, 50);
+ * }
+ * </code></div>
+ */
+ /**
+ * @method createSelect
+ * @param {Object} existing DOM select element
+ * @return {p5.Element}
+ */
+
+ p5.prototype.createSelect = function() {
+ p5._validateParameters('createSelect', arguments);
+ var elt, self;
+ var arg = arguments[0];
+ if (typeof arg === 'object' && arg.elt.nodeName === 'SELECT') {
+ self = arg;
+ elt = this.elt = arg.elt;
+ } else {
+ elt = document.createElement('select');
+ if (arg && typeof arg === 'boolean') {
+ elt.setAttribute('multiple', 'true');
+ }
+ self = addElement(elt, this);
+ }
+ self.option = function(name, value) {
+ var index;
+ //see if there is already an option with this name
+ for (var i = 0; i < this.elt.length; i++) {
+ if (this.elt[i].innerHTML === name) {
+ index = i;
+ break;
+ }
+ }
+ //if there is an option with this name we will modify it
+ if (index !== undefined) {
+ //if the user passed in false then delete that option
+ if (value === false) {
+ this.elt.remove(index);
+ } else {
+ //otherwise if the name and value are the same then change both
+ if (this.elt[index].innerHTML === this.elt[index].value) {
+ this.elt[index].innerHTML = this.elt[index].value = value;
+ //otherwise just change the value
+ } else {
+ this.elt[index].value = value;
+ }
+ }
+ } else {
+ //if it doesn't exist make it
+ var opt = document.createElement('option');
+ opt.innerHTML = name;
+ if (arguments.length > 1) opt.value = value;
+ else opt.value = name;
+ elt.appendChild(opt);
+ }
+ };
+ self.selected = function(value) {
+ var arr = [],
+ i;
+ if (arguments.length > 0) {
+ for (i = 0; i < this.elt.length; i++) {
+ if (value.toString() === this.elt[i].value) {
+ this.elt.selectedIndex = i;
+ }
+ }
+ return this;
+ } else {
+ if (this.elt.getAttribute('multiple')) {
+ for (i = 0; i < this.elt.selectedOptions.length; i++) {
+ arr.push(this.elt.selectedOptions[i].value);
+ }
+ return arr;
+ } else {
+ return this.elt.value;
+ }
+ }
+ };
+ return self;
+ };
+
+ /**
+ * Creates a radio button <input></input> element in the DOM.
+ * The .option() method can be used to set options for the radio after it is
+ * created. The .value() method will return the currently selected option.
+ *
+ * @method createRadio
+ * @param {String} [divId] the id and name of the created div and input field respectively
+ * @return {p5.Element} pointer to <a href="#/p5.Element">p5.Element</a> holding created node
+ * @example
+ * <div><code>
+ * var radio;
+ *
+ * function setup() {
+ * radio = createRadio();
+ * radio.option('black');
+ * radio.option('white');
+ * radio.option('gray');
+ * radio.style('width', '60px');
+ * textAlign(CENTER);
+ * fill(255, 0, 0);
+ * }
+ *
+ * function draw() {
+ * var val = radio.value();
+ * background(val);
+ * text(val, width / 2, height / 2);
+ * }
+ * </code></div>
+ * <div><code>
+ * var radio;
+ *
+ * function setup() {
+ * radio = createRadio();
+ * radio.option('apple', 1);
+ * radio.option('bread', 2);
+ * radio.option('juice', 3);
+ * radio.style('width', '60px');
+ * textAlign(CENTER);
+ * }
+ *
+ * function draw() {
+ * background(200);
+ * var val = radio.value();
+ * if (val) {
+ * text('item cost is $' + val, width / 2, height / 2);
+ * }
+ * }
+ * </code></div>
+ */
+ p5.prototype.createRadio = function(existing_radios) {
+ p5._validateParameters('createRadio', arguments);
+ // do some prep by counting number of radios on page
+ var radios = document.querySelectorAll('input[type=radio]');
+ var count = 0;
+ if (radios.length > 1) {
+ var length = radios.length;
+ var prev = radios[0].name;
+ var current = radios[1].name;
+ count = 1;
+ for (var i = 1; i < length; i++) {
+ current = radios[i].name;
+ if (prev !== current) {
+ count++;
+ }
+ prev = current;
+ }
+ } else if (radios.length === 1) {
+ count = 1;
+ }
+ // see if we got an existing set of radios from callee
+ var elt, self;
+ if (typeof existing_radios === 'object') {
+ // use existing elements
+ self = existing_radios;
+ elt = this.elt = existing_radios.elt;
+ } else {
+ // create a set of radio buttons
+ elt = document.createElement('div');
+ self = addElement(elt, this);
+ }
+ // setup member functions
+ self._getInputChildrenArray = function() {
+ return Array.prototype.slice.call(this.elt.children).filter(function(c) {
+ return c.tagName === 'INPUT';
+ });
+ };
+
+ var times = -1;
+ self.option = function(name, value) {
+ var opt = document.createElement('input');
+ opt.type = 'radio';
+ opt.innerHTML = name;
+ if (value) opt.value = value;
+ else opt.value = name;
+ opt.setAttribute('name', 'defaultradio' + count);
+ elt.appendChild(opt);
+ if (name) {
+ times++;
+ var label = document.createElement('label');
+ opt.setAttribute('id', 'defaultradio' + count + '-' + times);
+ label.htmlFor = 'defaultradio' + count + '-' + times;
+ label.appendChild(document.createTextNode(name));
+ elt.appendChild(label);
+ }
+ return opt;
+ };
+ self.selected = function(value) {
+ var i;
+ var inputChildren = self._getInputChildrenArray();
+ if (value) {
+ for (i = 0; i < inputChildren.length; i++) {
+ if (inputChildren[i].value === value) inputChildren[i].checked = true;
+ }
+ return this;
+ } else {
+ for (i = 0; i < inputChildren.length; i++) {
+ if (inputChildren[i].checked === true) return inputChildren[i].value;
+ }
+ }
+ };
+ self.value = function(value) {
+ var i;
+ var inputChildren = self._getInputChildrenArray();
+ if (value) {
+ for (i = 0; i < inputChildren.length; i++) {
+ if (inputChildren[i].value === value) inputChildren[i].checked = true;
+ }
+ return this;
+ } else {
+ for (i = 0; i < inputChildren.length; i++) {
+ if (inputChildren[i].checked === true) return inputChildren[i].value;
+ }
+ return '';
+ }
+ };
+ return self;
+ };
+
+ /**
+ * Creates a colorPicker element in the DOM for color input.
+ * The .value() method will return a hex string (#rrggbb) of the color.
+ * The .color() method will return a p5.Color object with the current chosen color.
+ *
+ * @method createColorPicker
+ * @param {String|p5.Color} [value] default color of element
+ * @return {p5.Element} pointer to <a href="#/p5.Element">p5.Element</a> holding created node
+ * @example
+ * <div>
+ * <code>
+ * var inp1, inp2;
+ * function setup() {
+ * createCanvas(100, 100);
+ * background('grey');
+ * inp1 = createColorPicker('#ff0000');
+ * inp2 = createColorPicker(color('yellow'));
+ * inp1.input(setShade1);
+ * inp2.input(setShade2);
+ * setMidShade();
+ * }
+ *
+ * function setMidShade() {
+ * // Finding a shade between the two
+ * var commonShade = lerpColor(inp1.color(), inp2.color(), 0.5);
+ * fill(commonShade);
+ * rect(20, 20, 60, 60);
+ * }
+ *
+ * function setShade1() {
+ * setMidShade();
+ * console.log('You are choosing shade 1 to be : ', this.value());
+ * }
+ * function setShade2() {
+ * setMidShade();
+ * console.log('You are choosing shade 2 to be : ', this.value());
+ * }
+ * </code>
+ * </div>
+ */
+ p5.prototype.createColorPicker = function(value) {
+ p5._validateParameters('createColorPicker', arguments);
+ var elt = document.createElement('input');
+ var self;
+ elt.type = 'color';
+ if (value) {
+ if (value instanceof p5.Color) {
+ elt.value = value.toString('#rrggbb');
+ } else {
+ p5.prototype._colorMode = 'rgb';
+ p5.prototype._colorMaxes = {
+ rgb: [255, 255, 255, 255],
+ hsb: [360, 100, 100, 1],
+ hsl: [360, 100, 100, 1]
+ };
+ elt.value = p5.prototype.color(value).toString('#rrggbb');
+ }
+ } else {
+ elt.value = '#000000';
+ }
+ self = addElement(elt, this);
+ // Method to return a p5.Color object for the given color.
+ self.color = function() {
+ if (value.mode) {
+ p5.prototype._colorMode = value.mode;
+ }
+ if (value.maxes) {
+ p5.prototype._colorMaxes = value.maxes;
+ }
+ return p5.prototype.color(this.elt.value);
+ };
+ return self;
+ };
+
+ /**
+ * Creates an <input></input> element in the DOM for text input.
+ * Use .<a href="#/p5.Element/size">size()</a> to set the display length of the box.
+ * Appends to the container node if one is specified, otherwise
+ * appends to body.
+ *
+ * @method createInput
+ * @param {String} [value] default value of the input box
+ * @param {String} [type] type of text, ie text, password etc. Defaults to text
+ * @return {p5.Element} pointer to <a href="#/p5.Element">p5.Element</a> holding created node
+ * @example
+ * <div class='norender'><code>
+ * function setup() {
+ * var inp = createInput('');
+ * inp.input(myInputEvent);
+ * }
+ *
+ * function myInputEvent() {
+ * console.log('you are typing: ', this.value());
+ * }
+ * </code></div>
+ */
+ p5.prototype.createInput = function(value, type) {
+ p5._validateParameters('createInput', arguments);
+ var elt = document.createElement('input');
+ elt.type = type ? type : 'text';
+ if (value) elt.value = value;
+ return addElement(elt, this);
+ };
+
+ /**
+ * Creates an <input></input> element in the DOM of type 'file'.
+ * This allows users to select local files for use in a sketch.
+ *
+ * @method createFileInput
+ * @param {Function} [callback] callback function for when a file loaded
+ * @param {String} [multiple] optional to allow multiple files selected
+ * @return {p5.Element} pointer to <a href="#/p5.Element">p5.Element</a> holding created DOM element
+ * @example
+ * <div><code>
+ * let input;
+ * let img;
+ *
+ * function setup() {
+ * input = createFileInput(handleFile);
+ * input.position(0, 0);
+ * }
+ *
+ * function draw() {
+ * background(255);
+ * if (img) {
+ * image(img, 0, 0, width, height);
+ * }
+ * }
+ *
+ * function handleFile(file) {
+ * print(file);
+ * if (file.type === 'image') {
+ * img = createImg(file.data);
+ * img.hide();
+ * } else {
+ * img = null;
+ * }
+ * }
+ * </code></div>
+ */
+ p5.prototype.createFileInput = function(callback, multiple) {
+ p5._validateParameters('createFileInput', arguments);
+ // Function to handle when a file is selected
+ // We're simplifying life and assuming that we always
+ // want to load every selected file
+ function handleFileSelect(evt) {
+ // These are the files
+ var files = evt.target.files;
+ // Load each one and trigger a callback
+ for (var i = 0; i < files.length; i++) {
+ var f = files[i];
+ p5.File._load(f, callback);
+ }
+ }
+ // Is the file stuff supported?
+ if (window.File && window.FileReader && window.FileList && window.Blob) {
+ // Yup, we're ok and make an input file selector
+ var elt = document.createElement('input');
+ elt.type = 'file';
+
+ // If we get a second argument that evaluates to true
+ // then we are looking for multiple files
+ if (multiple) {
+ // Anything gets the job done
+ elt.multiple = 'multiple';
+ }
+
+ // Now let's handle when a file was selected
+ elt.addEventListener('change', handleFileSelect, false);
+ return addElement(elt, this);
+ } else {
+ console.log(
+ 'The File APIs are not fully supported in this browser. Cannot create element.'
+ );
+ }
+ };
+
+ /** VIDEO STUFF **/
+
+ function createMedia(pInst, type, src, callback) {
+ var elt = document.createElement(type);
+
+ // allow src to be empty
+ src = src || '';
+ if (typeof src === 'string') {
+ src = [src];
+ }
+ for (var i = 0; i < src.length; i++) {
+ var source = document.createElement('source');
+ source.src = src[i];
+ elt.appendChild(source);
+ }
+ if (typeof callback !== 'undefined') {
+ var callbackHandler = function() {
+ callback();
+ elt.removeEventListener('canplaythrough', callbackHandler);
+ };
+ elt.addEventListener('canplaythrough', callbackHandler);
+ }
+
+ var c = addElement(elt, pInst, true);
+ c.loadedmetadata = false;
+ // set width and height onload metadata
+ elt.addEventListener('loadedmetadata', function() {
+ c.width = elt.videoWidth;
+ c.height = elt.videoHeight;
+ //c.elt.playbackRate = s;
+ // set elt width and height if not set
+ if (c.elt.width === 0) c.elt.width = elt.videoWidth;
+ if (c.elt.height === 0) c.elt.height = elt.videoHeight;
+ if (c.presetPlaybackRate) {
+ c.elt.playbackRate = c.presetPlaybackRate;
+ delete c.presetPlaybackRate;
+ }
+ c.loadedmetadata = true;
+ });
+
+ return c;
+ }
+ /**
+ * Creates an HTML5 <video> element in the DOM for simple playback
+ * of audio/video. Shown by default, can be hidden with .<a href="#/p5.Element/hide">hide()</a>
+ * and drawn into canvas using video(). Appends to the container
+ * node if one is specified, otherwise appends to body. The first parameter
+ * can be either a single string path to a video file, or an array of string
+ * paths to different formats of the same video. This is useful for ensuring
+ * that your video can play across different browsers, as each supports
+ * different formats. See <a href='https://developer.mozilla.org/en-US/docs/Web/HTML/Supported_media_formats'>this
+ * page</a> for further information about supported formats.
+ *
+ * @method createVideo
+ * @param {String|String[]} src path to a video file, or array of paths for
+ * supporting different browsers
+ * @param {Function} [callback] callback function to be called upon
+ * 'canplaythrough' event fire, that is, when the
+ * browser can play the media, and estimates that
+ * enough data has been loaded to play the media
+ * up to its end without having to stop for
+ * further buffering of content
+ * @return {p5.MediaElement} pointer to video <a href="#/p5.Element">p5.Element</a>
+ * @example
+ * <div><code>
+ * var vid;
+ * function setup() {
+ * noCanvas();
+ *
+ * vid = createVideo(
+ * ['assets/small.mp4', 'assets/small.ogv', 'assets/small.webm'],
+ * vidLoad
+ * );
+ *
+ * vid.size(100, 100);
+ * }
+ *
+ * // This function is called when the video loads
+ * function vidLoad() {
+ * vid.loop();
+ * vid.volume(0);
+ * }
+ * </code></div>
+ */
+ p5.prototype.createVideo = function(src, callback) {
+ p5._validateParameters('createVideo', arguments);
+ return createMedia(this, 'video', src, callback);
+ };
+
+ /** AUDIO STUFF **/
+
+ /**
+ * Creates a hidden HTML5 <audio> element in the DOM for simple audio
+ * playback. Appends to the container node if one is specified,
+ * otherwise appends to body. The first parameter
+ * can be either a single string path to a audio file, or an array of string
+ * paths to different formats of the same audio. This is useful for ensuring
+ * that your audio can play across different browsers, as each supports
+ * different formats. See <a href='https://developer.mozilla.org/en-US/docs/Web/HTML/Supported_media_formats'>this
+ * page for further information about supported formats</a>.
+ *
+ * @method createAudio
+ * @param {String|String[]} [src] path to an audio file, or array of paths
+ * for supporting different browsers
+ * @param {Function} [callback] callback function to be called upon
+ * 'canplaythrough' event fire, that is, when the
+ * browser can play the media, and estimates that
+ * enough data has been loaded to play the media
+ * up to its end without having to stop for
+ * further buffering of content
+ * @return {p5.MediaElement} pointer to audio <a href="#/p5.Element">p5.Element</a>
+ * @example
+ * <div><code>
+ * var ele;
+ * function setup() {
+ * ele = createAudio('assets/beat.mp3');
+ *
+ * // here we set the element to autoplay
+ * // The element will play as soon
+ * // as it is able to do so.
+ * ele.autoplay(true);
+ * }
+ * </code></div>
+ */
+ p5.prototype.createAudio = function(src, callback) {
+ p5._validateParameters('createAudio', arguments);
+ return createMedia(this, 'audio', src, callback);
+ };
+
+ /** CAMERA STUFF **/
+
+ /**
+ * @property {String} VIDEO
+ * @final
+ * @category Constants
+ */
+ p5.prototype.VIDEO = 'video';
+ /**
+ * @property {String} AUDIO
+ * @final
+ * @category Constants
+ */
+ p5.prototype.AUDIO = 'audio';
+
+ // from: https://developer.mozilla.org/en-US/docs/Web/API/MediaDevices/getUserMedia
+ // Older browsers might not implement mediaDevices at all, so we set an empty object first
+ if (navigator.mediaDevices === undefined) {
+ navigator.mediaDevices = {};
+ }
+
+ // Some browsers partially implement mediaDevices. We can't just assign an object
+ // with getUserMedia as it would overwrite existing properties.
+ // Here, we will just add the getUserMedia property if it's missing.
+ if (navigator.mediaDevices.getUserMedia === undefined) {
+ navigator.mediaDevices.getUserMedia = function(constraints) {
+ // First get ahold of the legacy getUserMedia, if present
+ var getUserMedia =
+ navigator.webkitGetUserMedia || navigator.mozGetUserMedia;
+
+ // Some browsers just don't implement it - return a rejected promise with an error
+ // to keep a consistent interface
+ if (!getUserMedia) {
+ return Promise.reject(
+ new Error('getUserMedia is not implemented in this browser')
+ );
+ }
+
+ // Otherwise, wrap the call to the old navigator.getUserMedia with a Promise
+ return new Promise(function(resolve, reject) {
+ getUserMedia.call(navigator, constraints, resolve, reject);
+ });
+ };
+ }
+
+ /**
+ * <p>Creates a new HTML5 <video> element that contains the audio/video
+ * feed from a webcam. The element is separate from the canvas and is
+ * displayed by default. The element can be hidden using .<a href="#/p5.Element/hide">hide()</a>. The feed
+ * can be drawn onto the canvas using <a href="#/p5/image">image()</a>. The loadedmetadata property can
+ * be used to detect when the element has fully loaded (see second example).</p>
+ * <p>More specific properties of the feed can be passing in a Constraints object.
+ * See the
+ * <a href='http://w3c.github.io/mediacapture-main/getusermedia.html#media-track-constraints'> W3C
+ * spec</a> for possible properties. Note that not all of these are supported
+ * by all browsers.</p>
+ * <p>Security note: A new browser security specification requires that getUserMedia,
+ * which is behind <a href="#/p5/createCapture">createCapture()</a>, only works when you're running the code locally,
+ * or on HTTPS. Learn more <a href='http://stackoverflow.com/questions/34197653/getusermedia-in-chrome-47-without-using-https'>here</a>
+ * and <a href='https://developer.mozilla.org/en-US/docs/Web/API/MediaDevices/getUserMedia'>here</a>.</p>
+ *
+ * @method createCapture
+ * @param {String|Constant|Object} type type of capture, either VIDEO or
+ * AUDIO if none specified, default both,
+ * or a Constraints object
+ * @param {Function} [callback] function to be called once
+ * stream has loaded
+ * @return {p5.Element} capture video <a href="#/p5.Element">p5.Element</a>
+ * @example
+ * <div class='norender notest'><code>
+ * var capture;
+ *
+ * function setup() {
+ * createCanvas(480, 480);
+ * capture = createCapture(VIDEO);
+ * capture.hide();
+ * }
+ *
+ * function draw() {
+ * image(capture, 0, 0, width, width * capture.height / capture.width);
+ * filter(INVERT);
+ * }
+ * </code></div>
+ * <div class='norender notest'><code>
+ * function setup() {
+ * createCanvas(480, 120);
+ * var constraints = {
+ * video: {
+ * mandatory: {
+ * minWidth: 1280,
+ * minHeight: 720
+ * },
+ * optional: [{ maxFrameRate: 10 }]
+ * },
+ * audio: true
+ * };
+ * createCapture(constraints, function(stream) {
+ * console.log(stream);
+ * });
+ * }
+ * </code></div>
+ * <code><div class='norender notest'>
+ * var capture;
+ *
+ * function setup() {
+ * createCanvas(640, 480);
+ * capture = createCapture(VIDEO);
+ * }
+ * function draw() {
+ * background(0);
+ * if (capture.loadedmetadata) {
+ * var c = capture.get(0, 0, 100, 100);
+ * image(c, 0, 0);
+ * }
+ * }
+ * </code></div>
+ */
+ p5.prototype.createCapture = function() {
+ p5._validateParameters('createCapture', arguments);
+ var useVideo = true;
+ var useAudio = true;
+ var constraints;
+ var cb;
+ for (var i = 0; i < arguments.length; i++) {
+ if (arguments[i] === p5.prototype.VIDEO) {
+ useAudio = false;
+ } else if (arguments[i] === p5.prototype.AUDIO) {
+ useVideo = false;
+ } else if (typeof arguments[i] === 'object') {
+ constraints = arguments[i];
+ } else if (typeof arguments[i] === 'function') {
+ cb = arguments[i];
+ }
+ }
+ if (navigator.mediaDevices && navigator.mediaDevices.getUserMedia) {
+ var elt = document.createElement('video');
+ // required to work in iOS 11 & up:
+ elt.setAttribute('playsinline', '');
+
+ if (!constraints) {
+ constraints = { video: useVideo, audio: useAudio };
+ }
+
+ navigator.mediaDevices.getUserMedia(constraints).then(
+ function(stream) {
+ try {
+ if ('srcObject' in elt) {
+ elt.srcObject = stream;
+ } else {
+ elt.src = window.URL.createObjectURL(stream);
+ }
+ } catch (err) {
+ elt.src = stream;
+ }
+ },
+ function(e) {
+ console.log(e);
+ }
+ );
+ } else {
+ throw 'getUserMedia not supported in this browser';
+ }
+ var c = addElement(elt, this, true);
+ c.loadedmetadata = false;
+ // set width and height onload metadata
+ elt.addEventListener('loadedmetadata', function() {
+ elt.play();
+ if (elt.width) {
+ c.width = elt.videoWidth = elt.width;
+ c.height = elt.videoHeight = elt.height;
+ } else {
+ c.width = c.elt.width = elt.videoWidth;
+ c.height = c.elt.height = elt.videoHeight;
+ }
+ c.loadedmetadata = true;
+ if (cb) {
+ cb(elt.srcObject);
+ }
+ });
+ return c;
+ };
+
+ /**
+ * Creates element with given tag in the DOM with given content.
+ * Appends to the container node if one is specified, otherwise
+ * appends to body.
+ *
+ * @method createElement
+ * @param {String} tag tag for the new element
+ * @param {String} [content] html content to be inserted into the element
+ * @return {p5.Element} pointer to <a href="#/p5.Element">p5.Element</a> holding created node
+ * @example
+ * <div class='norender'><code>
+ * createElement('h2', 'im an h2 p5.element!');
+ * </code></div>
+ */
+ p5.prototype.createElement = function(tag, content) {
+ p5._validateParameters('createElement', arguments);
+ var elt = document.createElement(tag);
+ if (typeof content !== 'undefined') {
+ elt.innerHTML = content;
+ }
+ return addElement(elt, this);
+ };
+
+ // =============================================================================
+ // p5.Element additions
+ // =============================================================================
+ /**
+ *
+ * Adds specified class to the element.
+ *
+ * @for p5.Element
+ * @method addClass
+ * @param {String} class name of class to add
+ * @chainable
+ * @example
+ * <div class='norender'><code>
+ * var div = createDiv('div');
+ * div.addClass('myClass');
+ * </code></div>
+ */
+ p5.Element.prototype.addClass = function(c) {
+ if (this.elt.className) {
+ if (!this.hasClass(c)) {
+ this.elt.className = this.elt.className + ' ' + c;
+ }
+ } else {
+ this.elt.className = c;
+ }
+ return this;
+ };
+
+ /**
+ *
+ * Removes specified class from the element.
+ *
+ * @method removeClass
+ * @param {String} class name of class to remove
+ * @chainable
+ * @example
+ * <div class='norender'><code>
+ * // In this example, a class is set when the div is created
+ * // and removed when mouse is pressed. This could link up
+ * // with a CSS style rule to toggle style properties.
+ *
+ * var div;
+ *
+ * function setup() {
+ * div = createDiv('div');
+ * div.addClass('myClass');
+ * }
+ *
+ * function mousePressed() {
+ * div.removeClass('myClass');
+ * }
+ * </code></div>
+ */
+ p5.Element.prototype.removeClass = function(c) {
+ // Note: Removing a class that does not exist does NOT throw an error in classList.remove method
+ this.elt.classList.remove(c);
+ return this;
+ };
+
+ /**
+ *
+ * Checks if specified class already set to element
+ *
+ * @method hasClass
+ * @returns {boolean} a boolean value if element has specified class
+ * @param c {String} class name of class to check
+ * @example
+ * <div class='norender'><code>
+ * var div;
+ *
+ * function setup() {
+ * div = createDiv('div');
+ * div.addClass('show');
+ * }
+ *
+ * function mousePressed() {
+ * if (div.hasClass('show')) {
+ * div.addClass('show');
+ * } else {
+ * div.removeClass('show');
+ * }
+ * }
+ * </code></div>
+ */
+ p5.Element.prototype.hasClass = function(c) {
+ return this.elt.classList.contains(c);
+ };
+
+ /**
+ *
+ * Toggles element class
+ *
+ * @method toggleClass
+ * @param c {String} class name to toggle
+ * @chainable
+ * @example
+ * <div class='norender'><code>
+ * var div;
+ *
+ * function setup() {
+ * div = createDiv('div');
+ * div.addClass('show');
+ * }
+ *
+ * function mousePressed() {
+ * div.toggleClass('show');
+ * }
+ * </code></div>
+ */
+ p5.Element.prototype.toggleClass = function(c) {
+ // classList also has a toggle() method, but we cannot use that yet as support is unclear.
+ // See https://github.com/processing/p5.js/issues/3631
+ // this.elt.classList.toggle(c);
+ if (this.elt.classList.contains(c)) {
+ this.elt.classList.remove(c);
+ } else {
+ this.elt.classList.add(c);
+ }
+ return this;
+ };
+
+ /**
+ *
+ * Attaches the element as a child to the parent specified.
+ * Accepts either a string ID, DOM node, or <a href="#/p5.Element">p5.Element</a>.
+ * If no argument is specified, an array of children DOM nodes is returned.
+ *
+ * @method child
+ * @returns {Node[]} an array of child nodes
+ * @example
+ * <div class='norender'><code>
+ * var div0 = createDiv('this is the parent');
+ * var div1 = createDiv('this is the child');
+ * div0.child(div1); // use p5.Element
+ * </code></div>
+ * <div class='norender'><code>
+ * var div0 = createDiv('this is the parent');
+ * var div1 = createDiv('this is the child');
+ * div1.id('apples');
+ * div0.child('apples'); // use id
+ * </code></div>
+ * <div class='norender notest'><code>
+ * // this example assumes there is a div already on the page
+ * // with id "myChildDiv"
+ * var div0 = createDiv('this is the parent');
+ * var elt = document.getElementById('myChildDiv');
+ * div0.child(elt); // use element from page
+ * </code></div>
+ */
+ /**
+ * @method child
+ * @param {String|p5.Element} [child] the ID, DOM node, or <a href="#/p5.Element">p5.Element</a>
+ * to add to the current element
+ * @chainable
+ */
+ p5.Element.prototype.child = function(c) {
+ if (typeof c === 'undefined') {
+ return this.elt.childNodes;
+ }
+ if (typeof c === 'string') {
+ if (c[0] === '#') {
+ c = c.substring(1);
+ }
+ c = document.getElementById(c);
+ } else if (c instanceof p5.Element) {
+ c = c.elt;
+ }
+ this.elt.appendChild(c);
+ return this;
+ };
+
+ /**
+ * Centers a p5 Element either vertically, horizontally,
+ * or both, relative to its parent or according to
+ * the body if the Element has no parent. If no argument is passed
+ * the Element is aligned both vertically and horizontally.
+ *
+ * @method center
+ * @param {String} [align] passing 'vertical', 'horizontal' aligns element accordingly
+ * @chainable
+ *
+ * @example
+ * <div><code>
+ * function setup() {
+ * var div = createDiv('').size(10, 10);
+ * div.style('background-color', 'orange');
+ * div.center();
+ * }
+ * </code></div>
+ */
+ p5.Element.prototype.center = function(align) {
+ var style = this.elt.style.display;
+ var hidden = this.elt.style.display === 'none';
+ var parentHidden = this.parent().style.display === 'none';
+ var pos = { x: this.elt.offsetLeft, y: this.elt.offsetTop };
+
+ if (hidden) this.show();
+
+ this.elt.style.display = 'block';
+ this.position(0, 0);
+
+ if (parentHidden) this.parent().style.display = 'block';
+
+ var wOffset = Math.abs(this.parent().offsetWidth - this.elt.offsetWidth);
+ var hOffset = Math.abs(this.parent().offsetHeight - this.elt.offsetHeight);
+ var y = pos.y;
+ var x = pos.x;
+
+ if (align === 'both' || align === undefined) {
+ this.position(wOffset / 2, hOffset / 2);
+ } else if (align === 'horizontal') {
+ this.position(wOffset / 2, y);
+ } else if (align === 'vertical') {
+ this.position(x, hOffset / 2);
+ }
+
+ this.style('display', style);
+
+ if (hidden) this.hide();
+
+ if (parentHidden) this.parent().style.display = 'none';
+
+ return this;
+ };
+
+ /**
+ *
+ * If an argument is given, sets the inner HTML of the element,
+ * replacing any existing html. If true is included as a second
+ * argument, html is appended instead of replacing existing html.
+ * If no arguments are given, returns
+ * the inner HTML of the element.
+ *
+ * @for p5.Element
+ * @method html
+ * @returns {String} the inner HTML of the element
+ * @example
+ * <div class='norender'><code>
+ * var div = createDiv('').size(100, 100);
+ * div.html('hi');
+ * </code></div>
+ * <div class='norender'><code>
+ * var div = createDiv('Hello ').size(100, 100);
+ * div.html('World', true);
+ * </code></div>
+ */
+ /**
+ * @method html
+ * @param {String} [html] the HTML to be placed inside the element
+ * @param {boolean} [append] whether to append HTML to existing
+ * @chainable
+ */
+ p5.Element.prototype.html = function() {
+ if (arguments.length === 0) {
+ return this.elt.innerHTML;
+ } else if (arguments[1]) {
+ this.elt.innerHTML += arguments[0];
+ return this;
+ } else {
+ this.elt.innerHTML = arguments[0];
+ return this;
+ }
+ };
+
+ /**
+ *
+ * Sets the position of the element relative to (0, 0) of the
+ * window. Essentially, sets position:absolute and left and top
+ * properties of style. If no arguments given returns the x and y position
+ * of the element in an object.
+ *
+ * @method position
+ * @returns {Object} the x and y position of the element in an object
+ * @example
+ * <div><code class='norender'>
+ * function setup() {
+ * var cnv = createCanvas(100, 100);
+ * // positions canvas 50px to the right and 100px
+ * // below upper left corner of the window
+ * cnv.position(50, 100);
+ * }
+ * </code></div>
+ */
+ /**
+ * @method position
+ * @param {Number} [x] x-position relative to upper left of window
+ * @param {Number} [y] y-position relative to upper left of window
+ * @chainable
+ */
+ p5.Element.prototype.position = function() {
+ if (arguments.length === 0) {
+ return { x: this.elt.offsetLeft, y: this.elt.offsetTop };
+ } else {
+ this.elt.style.position = 'absolute';
+ this.elt.style.left = arguments[0] + 'px';
+ this.elt.style.top = arguments[1] + 'px';
+ this.x = arguments[0];
+ this.y = arguments[1];
+ return this;
+ }
+ };
+
+ /* Helper method called by p5.Element.style() */
+ p5.Element.prototype._translate = function() {
+ this.elt.style.position = 'absolute';
+ // save out initial non-translate transform styling
+ var transform = '';
+ if (this.elt.style.transform) {
+ transform = this.elt.style.transform.replace(/translate3d\(.*\)/g, '');
+ transform = transform.replace(/translate[X-Z]?\(.*\)/g, '');
+ }
+ if (arguments.length === 2) {
+ this.elt.style.transform =
+ 'translate(' + arguments[0] + 'px, ' + arguments[1] + 'px)';
+ } else if (arguments.length > 2) {
+ this.elt.style.transform =
+ 'translate3d(' +
+ arguments[0] +
+ 'px,' +
+ arguments[1] +
+ 'px,' +
+ arguments[2] +
+ 'px)';
+ if (arguments.length === 3) {
+ this.elt.parentElement.style.perspective = '1000px';
+ } else {
+ this.elt.parentElement.style.perspective = arguments[3] + 'px';
+ }
+ }
+ // add any extra transform styling back on end
+ this.elt.style.transform += transform;
+ return this;
+ };
+
+ /* Helper method called by p5.Element.style() */
+ p5.Element.prototype._rotate = function() {
+ // save out initial non-rotate transform styling
+ var transform = '';
+ if (this.elt.style.transform) {
+ transform = this.elt.style.transform.replace(/rotate3d\(.*\)/g, '');
+ transform = transform.replace(/rotate[X-Z]?\(.*\)/g, '');
+ }
+
+ if (arguments.length === 1) {
+ this.elt.style.transform = 'rotate(' + arguments[0] + 'deg)';
+ } else if (arguments.length === 2) {
+ this.elt.style.transform =
+ 'rotate(' + arguments[0] + 'deg, ' + arguments[1] + 'deg)';
+ } else if (arguments.length === 3) {
+ this.elt.style.transform = 'rotateX(' + arguments[0] + 'deg)';
+ this.elt.style.transform += 'rotateY(' + arguments[1] + 'deg)';
+ this.elt.style.transform += 'rotateZ(' + arguments[2] + 'deg)';
+ }
+ // add remaining transform back on
+ this.elt.style.transform += transform;
+ return this;
+ };
+
+ /**
+ * Sets the given style (css) property (1st arg) of the element with the
+ * given value (2nd arg). If a single argument is given, .style()
+ * returns the value of the given property; however, if the single argument
+ * is given in css syntax ('text-align:center'), .style() sets the css
+ * appropriately.
+ *
+ * @method style
+ * @param {String} property property to be set
+ * @returns {String} value of property
+ * @example
+ * <div><code class='norender'>
+ * var myDiv = createDiv('I like pandas.');
+ * myDiv.style('font-size', '18px');
+ * myDiv.style('color', '#ff0000');
+ * </code></div>
+ * <div><code class='norender'>
+ * var col = color(25, 23, 200, 50);
+ * var button = createButton('button');
+ * button.style('background-color', col);
+ * button.position(10, 10);
+ * </code></div>
+ * <div><code class='norender'>
+ * var myDiv;
+ * function setup() {
+ * background(200);
+ * myDiv = createDiv('I like gray.');
+ * myDiv.position(20, 20);
+ * }
+ *
+ * function draw() {
+ * myDiv.style('font-size', mouseX + 'px');
+ * }
+ * </code></div>
+ */
+ /**
+ * @method style
+ * @param {String} property
+ * @param {String|Number|p5.Color} value value to assign to property
+ * @return {String} current value of property, if no value is given as second argument
+ * @chainable
+ */
+ p5.Element.prototype.style = function(prop, val) {
+ var self = this;
+
+ if (val instanceof p5.Color) {
+ val =
+ 'rgba(' +
+ val.levels[0] +
+ ',' +
+ val.levels[1] +
+ ',' +
+ val.levels[2] +
+ ',' +
+ val.levels[3] / 255 +
+ ')';
+ }
+
+ if (typeof val === 'undefined') {
+ // input provided as single line string
+ if (prop.indexOf(':') === -1) {
+ var styles = window.getComputedStyle(self.elt);
+ var style = styles.getPropertyValue(prop);
+ return style;
+ } else {
+ var attrs = prop.split(';');
+ for (var i = 0; i < attrs.length; i++) {
+ var parts = attrs[i].split(':');
+ if (parts[0] && parts[1]) {
+ this.elt.style[parts[0].trim()] = parts[1].trim();
+ }
+ }
+ }
+ } else {
+ // input provided as key,val pair
+ this.elt.style[prop] = val;
+ if (
+ prop === 'width' ||
+ prop === 'height' ||
+ prop === 'left' ||
+ prop === 'top'
+ ) {
+ var numVal = val.replace(/\D+/g, '');
+ this[prop] = parseInt(numVal, 10);
+ }
+ }
+ return this;
+ };
+
+ /**
+ *
+ * Adds a new attribute or changes the value of an existing attribute
+ * on the specified element. If no value is specified, returns the
+ * value of the given attribute, or null if attribute is not set.
+ *
+ * @method attribute
+ * @return {String} value of attribute
+ *
+ * @example
+ * <div class='norender'><code>
+ * var myDiv = createDiv('I like pandas.');
+ * myDiv.attribute('align', 'center');
+ * </code></div>
+ */
+ /**
+ * @method attribute
+ * @param {String} attr attribute to set
+ * @param {String} value value to assign to attribute
+ * @chainable
+ */
+ p5.Element.prototype.attribute = function(attr, value) {
+ //handling for checkboxes and radios to ensure options get
+ //attributes not divs
+ if (
+ this.elt.firstChild != null &&
+ (this.elt.firstChild.type === 'checkbox' ||
+ this.elt.firstChild.type === 'radio')
+ ) {
+ if (typeof value === 'undefined') {
+ return this.elt.firstChild.getAttribute(attr);
+ } else {
+ for (var i = 0; i < this.elt.childNodes.length; i++) {
+ this.elt.childNodes[i].setAttribute(attr, value);
+ }
+ }
+ } else if (typeof value === 'undefined') {
+ return this.elt.getAttribute(attr);
+ } else {
+ this.elt.setAttribute(attr, value);
+ return this;
+ }
+ };
+
+ /**
+ *
+ * Removes an attribute on the specified element.
+ *
+ * @method removeAttribute
+ * @param {String} attr attribute to remove
+ * @chainable
+ *
+ * @example
+ * <div><code>
+ * var button;
+ * var checkbox;
+ *
+ * function setup() {
+ * checkbox = createCheckbox('enable', true);
+ * checkbox.changed(enableButton);
+ * button = createButton('button');
+ * button.position(10, 10);
+ * }
+ *
+ * function enableButton() {
+ * if (this.checked()) {
+ * // Re-enable the button
+ * button.removeAttribute('disabled');
+ * } else {
+ * // Disable the button
+ * button.attribute('disabled', '');
+ * }
+ * }
+ * </code></div>
+ */
+ p5.Element.prototype.removeAttribute = function(attr) {
+ if (
+ this.elt.firstChild != null &&
+ (this.elt.firstChild.type === 'checkbox' ||
+ this.elt.firstChild.type === 'radio')
+ ) {
+ for (var i = 0; i < this.elt.childNodes.length; i++) {
+ this.elt.childNodes[i].removeAttribute(attr);
+ }
+ }
+ this.elt.removeAttribute(attr);
+ return this;
+ };
+
+ /**
+ * Either returns the value of the element if no arguments
+ * given, or sets the value of the element.
+ *
+ * @method value
+ * @return {String|Number} value of the element
+ * @example
+ * <div class='norender'><code>
+ * // gets the value
+ * var inp;
+ * function setup() {
+ * inp = createInput('');
+ * }
+ *
+ * function mousePressed() {
+ * print(inp.value());
+ * }
+ * </code></div>
+ * <div class='norender'><code>
+ * // sets the value
+ * var inp;
+ * function setup() {
+ * inp = createInput('myValue');
+ * }
+ *
+ * function mousePressed() {
+ * inp.value('myValue');
+ * }
+ * </code></div>
+ */
+ /**
+ * @method value
+ * @param {String|Number} value
+ * @chainable
+ */
+ p5.Element.prototype.value = function() {
+ if (arguments.length > 0) {
+ this.elt.value = arguments[0];
+ return this;
+ } else {
+ if (this.elt.type === 'range') {
+ return parseFloat(this.elt.value);
+ } else return this.elt.value;
+ }
+ };
+
+ /**
+ *
+ * Shows the current element. Essentially, setting display:block for the style.
+ *
+ * @method show
+ * @chainable
+ * @example
+ * <div class='norender'><code>
+ * var div = createDiv('div');
+ * div.style('display', 'none');
+ * div.show(); // turns display to block
+ * </code></div>
+ */
+ p5.Element.prototype.show = function() {
+ this.elt.style.display = 'block';
+ return this;
+ };
+
+ /**
+ * Hides the current element. Essentially, setting display:none for the style.
+ *
+ * @method hide
+ * @chainable
+ * @example
+ * <div class='norender'><code>
+ * var div = createDiv('this is a div');
+ * div.hide();
+ * </code></div>
+ */
+ p5.Element.prototype.hide = function() {
+ this.elt.style.display = 'none';
+ return this;
+ };
+
+ /**
+ *
+ * Sets the width and height of the element. AUTO can be used to
+ * only adjust one dimension at a time. If no arguments are given, it
+ * returns the width and height of the element in an object. In case of
+ * elements which need to be loaded, such as images, it is recommended
+ * to call the function after the element has finished loading.
+ *
+ * @method size
+ * @return {Object} the width and height of the element in an object
+ * @example
+ * <div class='norender'><code>
+ * let div = createDiv('this is a div');
+ * div.size(100, 100);
+ * let img = createImg('assets/laDefense.jpg', () => {
+ * img.size(10, AUTO);
+ * });
+ * </code></div>
+ */
+ /**
+ * @method size
+ * @param {Number|Constant} w width of the element, either AUTO, or a number
+ * @param {Number|Constant} [h] height of the element, either AUTO, or a number
+ * @chainable
+ */
+ p5.Element.prototype.size = function(w, h) {
+ if (arguments.length === 0) {
+ return { width: this.elt.offsetWidth, height: this.elt.offsetHeight };
+ } else {
+ var aW = w;
+ var aH = h;
+ var AUTO = p5.prototype.AUTO;
+ if (aW !== AUTO || aH !== AUTO) {
+ if (aW === AUTO) {
+ aW = h * this.width / this.height;
+ } else if (aH === AUTO) {
+ aH = w * this.height / this.width;
+ }
+ // set diff for cnv vs normal div
+ if (this.elt instanceof HTMLCanvasElement) {
+ var j = {};
+ var k = this.elt.getContext('2d');
+ var prop;
+ for (prop in k) {
+ j[prop] = k[prop];
+ }
+ this.elt.setAttribute('width', aW * this._pInst._pixelDensity);
+ this.elt.setAttribute('height', aH * this._pInst._pixelDensity);
+ this.elt.style.width = aW + 'px';
+ this.elt.style.height = aH + 'px';
+ this._pInst.scale(
+ this._pInst._pixelDensity,
+ this._pInst._pixelDensity
+ );
+ for (prop in j) {
+ this.elt.getContext('2d')[prop] = j[prop];
+ }
+ } else {
+ this.elt.style.width = aW + 'px';
+ this.elt.style.height = aH + 'px';
+ this.elt.width = aW;
+ this.elt.height = aH;
+ }
+
+ this.width = this.elt.offsetWidth;
+ this.height = this.elt.offsetHeight;
+
+ if (this._pInst && this._pInst._curElement) {
+ // main canvas associated with p5 instance
+ if (this._pInst._curElement.elt === this.elt) {
+ this._pInst._setProperty('width', this.elt.offsetWidth);
+ this._pInst._setProperty('height', this.elt.offsetHeight);
+ }
+ }
+ }
+ return this;
+ }
+ };
+
+ /**
+ * Removes the element and deregisters all listeners.
+ * @method remove
+ * @example
+ * <div class='norender'><code>
+ * var myDiv = createDiv('this is some text');
+ * myDiv.remove();
+ * </code></div>
+ */
+ p5.Element.prototype.remove = function() {
+ // deregister events
+ for (var ev in this._events) {
+ this.elt.removeEventListener(ev, this._events[ev]);
+ }
+ if (this.elt.parentNode) {
+ this.elt.parentNode.removeChild(this.elt);
+ }
+ delete this;
+ };
+
+ /**
+ * Registers a callback that gets called every time a file that is
+ * dropped on the element has been loaded.
+ * p5 will load every dropped file into memory and pass it as a p5.File object to the callback.
+ * Multiple files dropped at the same time will result in multiple calls to the callback.
+ *
+ * You can optionally pass a second callback which will be registered to the raw
+ * <a href="https://developer.mozilla.org/en-US/docs/Web/Events/drop">drop</a> event.
+ * The callback will thus be provided the original
+ * <a href="https://developer.mozilla.org/en-US/docs/Web/API/DragEvent">DragEvent</a>.
+ * Dropping multiple files at the same time will trigger the second callback once per drop,
+ * whereas the first callback will trigger for each loaded file.
+ *
+ * @method drop
+ * @param {Function} callback callback to receive loaded file, called for each file dropped.
+ * @param {Function} [fxn] callback triggered once when files are dropped with the drop event.
+ * @chainable
+ * @example
+ * <div><code>
+ * function setup() {
+ * var c = createCanvas(100, 100);
+ * background(200);
+ * textAlign(CENTER);
+ * text('drop file', width / 2, height / 2);
+ * c.drop(gotFile);
+ * }
+ *
+ * function gotFile(file) {
+ * background(200);
+ * text('received file:', width / 2, height / 2);
+ * text(file.name, width / 2, height / 2 + 50);
+ * }
+ * </code></div>
+ *
+ * <div><code>
+ * var img;
+ *
+ * function setup() {
+ * var c = createCanvas(100, 100);
+ * background(200);
+ * textAlign(CENTER);
+ * text('drop image', width / 2, height / 2);
+ * c.drop(gotFile);
+ * }
+ *
+ * function draw() {
+ * if (img) {
+ * image(img, 0, 0, width, height);
+ * }
+ * }
+ *
+ * function gotFile(file) {
+ * img = createImg(file.data).hide();
+ * }
+ * </code></div>
+ *
+ * @alt
+ * Canvas turns into whatever image is dragged/dropped onto it.
+ */
+ p5.Element.prototype.drop = function(callback, fxn) {
+ // Is the file stuff supported?
+ if (window.File && window.FileReader && window.FileList && window.Blob) {
+ if (!this._dragDisabled) {
+ this._dragDisabled = true;
+
+ var preventDefault = function(evt) {
+ evt.preventDefault();
+ };
+
+ // If you want to be able to drop you've got to turn off
+ // a lot of default behavior.
+ // avoid `attachListener` here, since it overrides other handlers.
+ this.elt.addEventListener('dragover', preventDefault);
+
+ // If this is a drag area we need to turn off the default behavior
+ this.elt.addEventListener('dragleave', preventDefault);
+ }
+
+ // Deal with the files
+ p5.Element._attachListener(
+ 'drop',
+ function(evt) {
+ evt.preventDefault();
+ // Call the second argument as a callback that receives the raw drop event
+ if (typeof fxn === 'function') {
+ fxn.call(this, evt);
+ }
+ // A FileList
+ var files = evt.dataTransfer.files;
+
+ // Load each one and trigger the callback
+ for (var i = 0; i < files.length; i++) {
+ var f = files[i];
+ p5.File._load(f, callback);
+ }
+ },
+ this
+ );
+ } else {
+ console.log('The File APIs are not fully supported in this browser.');
+ }
+
+ return this;
+ };
+
+ // =============================================================================
+ // p5.MediaElement additions
+ // =============================================================================
+
+ /**
+ * Extends <a href="#/p5.Element">p5.Element</a> to handle audio and video. In addition to the methods
+ * of <a href="#/p5.Element">p5.Element</a>, it also contains methods for controlling media. It is not
+ * called directly, but <a href="#/p5.MediaElement">p5.MediaElement</a>s are created by calling <a href="#/p5/createVideo">createVideo</a>,
+ * <a href="#/p5/createAudio">createAudio</a>, and <a href="#/p5/createCapture">createCapture</a>.
+ *
+ * @class p5.MediaElement
+ * @constructor
+ * @param {String} elt DOM node that is wrapped
+ */
+ p5.MediaElement = function(elt, pInst) {
+ p5.Element.call(this, elt, pInst);
+
+ var self = this;
+ this.elt.crossOrigin = 'anonymous';
+
+ this._prevTime = 0;
+ this._cueIDCounter = 0;
+ this._cues = [];
+ this._pixelsState = this;
+ this._pixelDensity = 1;
+ this._modified = false;
+ this._pixelsDirty = true;
+ this._pixelsTime = -1; // the time at which we last updated 'pixels'
+
+ /**
+ * Path to the media element source.
+ *
+ * @property src
+ * @return {String} src
+ * @example
+ * <div><code>
+ * var ele;
+ *
+ * function setup() {
+ * background(250);
+ *
+ * //p5.MediaElement objects are usually created
+ * //by calling the createAudio(), createVideo(),
+ * //and createCapture() functions.
+ *
+ * //In this example we create
+ * //a new p5.MediaElement via createAudio().
+ * ele = createAudio('assets/beat.mp3');
+ *
+ * //We'll set up our example so that
+ * //when you click on the text,
+ * //an alert box displays the MediaElement's
+ * //src field.
+ * textAlign(CENTER);
+ * text('Click Me!', width / 2, height / 2);
+ * }
+ *
+ * function mouseClicked() {
+ * //here we test if the mouse is over the
+ * //canvas element when it's clicked
+ * if (mouseX >= 0 && mouseX <= width && mouseY >= 0 && mouseY <= height) {
+ * //Show our p5.MediaElement's src field
+ * alert(ele.src);
+ * }
+ * }
+ * </code></div>
+ */
+ Object.defineProperty(self, 'src', {
+ get: function() {
+ var firstChildSrc = self.elt.children[0].src;
+ var srcVal = self.elt.src === window.location.href ? '' : self.elt.src;
+ var ret =
+ firstChildSrc === window.location.href ? srcVal : firstChildSrc;
+ return ret;
+ },
+ set: function(newValue) {
+ for (var i = 0; i < self.elt.children.length; i++) {
+ self.elt.removeChild(self.elt.children[i]);
+ }
+ var source = document.createElement('source');
+ source.src = newValue;
+ elt.appendChild(source);
+ self.elt.src = newValue;
+ self.modified = true;
+ }
+ });
+
+ // private _onended callback, set by the method: onended(callback)
+ self._onended = function() {};
+ self.elt.onended = function() {
+ self._onended(self);
+ };
+ };
+ p5.MediaElement.prototype = Object.create(p5.Element.prototype);
+
+ /**
+ * Play an HTML5 media element.
+ *
+ * @method play
+ * @chainable
+ * @example
+ * <div><code>
+ * var ele;
+ *
+ * function setup() {
+ * //p5.MediaElement objects are usually created
+ * //by calling the createAudio(), createVideo(),
+ * //and createCapture() functions.
+ *
+ * //In this example we create
+ * //a new p5.MediaElement via createAudio().
+ * ele = createAudio('assets/beat.mp3');
+ *
+ * background(250);
+ * textAlign(CENTER);
+ * text('Click to Play!', width / 2, height / 2);
+ * }
+ *
+ * function mouseClicked() {
+ * //here we test if the mouse is over the
+ * //canvas element when it's clicked
+ * if (mouseX >= 0 && mouseX <= width && mouseY >= 0 && mouseY <= height) {
+ * //Here we call the play() function on
+ * //the p5.MediaElement we created above.
+ * //This will start the audio sample.
+ * ele.play();
+ *
+ * background(200);
+ * text('You clicked Play!', width / 2, height / 2);
+ * }
+ * }
+ * </code></div>
+ */
+ p5.MediaElement.prototype.play = function() {
+ if (this.elt.currentTime === this.elt.duration) {
+ this.elt.currentTime = 0;
+ }
+ var promise;
+ if (this.elt.readyState > 1) {
+ promise = this.elt.play();
+ } else {
+ // in Chrome, playback cannot resume after being stopped and must reload
+ this.elt.load();
+ promise = this.elt.play();
+ }
+ if (promise && promise.catch) {
+ promise.catch(function(e) {
+ console.log(
+ 'WARN: Element play method raised an error asynchronously',
+ e
+ );
+ });
+ }
+ return this;
+ };
+
+ /**
+ * Stops an HTML5 media element (sets current time to zero).
+ *
+ * @method stop
+ * @chainable
+ * @example
+ * <div><code>
+ * //This example both starts
+ * //and stops a sound sample
+ * //when the user clicks the canvas
+ *
+ * //We will store the p5.MediaElement
+ * //object in here
+ * var ele;
+ *
+ * //while our audio is playing,
+ * //this will be set to true
+ * var sampleIsPlaying = false;
+ *
+ * function setup() {
+ * //Here we create a p5.MediaElement object
+ * //using the createAudio() function.
+ * ele = createAudio('assets/beat.mp3');
+ * background(200);
+ * textAlign(CENTER);
+ * text('Click to play!', width / 2, height / 2);
+ * }
+ *
+ * function mouseClicked() {
+ * //here we test if the mouse is over the
+ * //canvas element when it's clicked
+ * if (mouseX >= 0 && mouseX <= width && mouseY >= 0 && mouseY <= height) {
+ * background(200);
+ *
+ * if (sampleIsPlaying) {
+ * //if the sample is currently playing
+ * //calling the stop() function on
+ * //our p5.MediaElement will stop
+ * //it and reset its current
+ * //time to 0 (i.e. it will start
+ * //at the beginning the next time
+ * //you play it)
+ * ele.stop();
+ *
+ * sampleIsPlaying = false;
+ * text('Click to play!', width / 2, height / 2);
+ * } else {
+ * //loop our sound element until we
+ * //call ele.stop() on it.
+ * ele.loop();
+ *
+ * sampleIsPlaying = true;
+ * text('Click to stop!', width / 2, height / 2);
+ * }
+ * }
+ * }
+ * </code></div>
+ */
+ p5.MediaElement.prototype.stop = function() {
+ this.elt.pause();
+ this.elt.currentTime = 0;
+ return this;
+ };
+
+ /**
+ * Pauses an HTML5 media element.
+ *
+ * @method pause
+ * @chainable
+ * @example
+ * <div><code>
+ * //This example both starts
+ * //and pauses a sound sample
+ * //when the user clicks the canvas
+ *
+ * //We will store the p5.MediaElement
+ * //object in here
+ * var ele;
+ *
+ * //while our audio is playing,
+ * //this will be set to true
+ * var sampleIsPlaying = false;
+ *
+ * function setup() {
+ * //Here we create a p5.MediaElement object
+ * //using the createAudio() function.
+ * ele = createAudio('assets/lucky_dragons.mp3');
+ * background(200);
+ * textAlign(CENTER);
+ * text('Click to play!', width / 2, height / 2);
+ * }
+ *
+ * function mouseClicked() {
+ * //here we test if the mouse is over the
+ * //canvas element when it's clicked
+ * if (mouseX >= 0 && mouseX <= width && mouseY >= 0 && mouseY <= height) {
+ * background(200);
+ *
+ * if (sampleIsPlaying) {
+ * //Calling pause() on our
+ * //p5.MediaElement will stop it
+ * //playing, but when we call the
+ * //loop() or play() functions
+ * //the sample will start from
+ * //where we paused it.
+ * ele.pause();
+ *
+ * sampleIsPlaying = false;
+ * text('Click to resume!', width / 2, height / 2);
+ * } else {
+ * //loop our sound element until we
+ * //call ele.pause() on it.
+ * ele.loop();
+ *
+ * sampleIsPlaying = true;
+ * text('Click to pause!', width / 2, height / 2);
+ * }
+ * }
+ * }
+ * </code></div>
+ */
+ p5.MediaElement.prototype.pause = function() {
+ this.elt.pause();
+ return this;
+ };
+
+ /**
+ * Set 'loop' to true for an HTML5 media element, and starts playing.
+ *
+ * @method loop
+ * @chainable
+ * @example
+ * <div><code>
+ * //Clicking the canvas will loop
+ * //the audio sample until the user
+ * //clicks again to stop it
+ *
+ * //We will store the p5.MediaElement
+ * //object in here
+ * var ele;
+ *
+ * //while our audio is playing,
+ * //this will be set to true
+ * var sampleIsLooping = false;
+ *
+ * function setup() {
+ * //Here we create a p5.MediaElement object
+ * //using the createAudio() function.
+ * ele = createAudio('assets/lucky_dragons.mp3');
+ * background(200);
+ * textAlign(CENTER);
+ * text('Click to loop!', width / 2, height / 2);
+ * }
+ *
+ * function mouseClicked() {
+ * //here we test if the mouse is over the
+ * //canvas element when it's clicked
+ * if (mouseX >= 0 && mouseX <= width && mouseY >= 0 && mouseY <= height) {
+ * background(200);
+ *
+ * if (!sampleIsLooping) {
+ * //loop our sound element until we
+ * //call ele.stop() on it.
+ * ele.loop();
+ *
+ * sampleIsLooping = true;
+ * text('Click to stop!', width / 2, height / 2);
+ * } else {
+ * ele.stop();
+ *
+ * sampleIsLooping = false;
+ * text('Click to loop!', width / 2, height / 2);
+ * }
+ * }
+ * }
+ * </code></div>
+ */
+ p5.MediaElement.prototype.loop = function() {
+ this.elt.setAttribute('loop', true);
+ this.play();
+ return this;
+ };
+ /**
+ * Set 'loop' to false for an HTML5 media element. Element will stop
+ * when it reaches the end.
+ *
+ * @method noLoop
+ * @chainable
+ * @example
+ * <div><code>
+ * //This example both starts
+ * //and stops loop of sound sample
+ * //when the user clicks the canvas
+ *
+ * //We will store the p5.MediaElement
+ * //object in here
+ * var ele;
+ * //while our audio is playing,
+ * //this will be set to true
+ * var sampleIsPlaying = false;
+ *
+ * function setup() {
+ * //Here we create a p5.MediaElement object
+ * //using the createAudio() function.
+ * ele = createAudio('assets/beat.mp3');
+ * background(200);
+ * textAlign(CENTER);
+ * text('Click to play!', width / 2, height / 2);
+ * }
+ *
+ * function mouseClicked() {
+ * //here we test if the mouse is over the
+ * //canvas element when it's clicked
+ * if (mouseX >= 0 && mouseX <= width && mouseY >= 0 && mouseY <= height) {
+ * background(200);
+ *
+ * if (sampleIsPlaying) {
+ * ele.noLoop();
+ * text('No more Loops!', width / 2, height / 2);
+ * } else {
+ * ele.loop();
+ * sampleIsPlaying = true;
+ * text('Click to stop looping!', width / 2, height / 2);
+ * }
+ * }
+ * }
+ * </code></div>
+ *
+ */
+ p5.MediaElement.prototype.noLoop = function() {
+ this.elt.setAttribute('loop', false);
+ return this;
+ };
+
+ /**
+ * Set HTML5 media element to autoplay or not.
+ *
+ * @method autoplay
+ * @param {Boolean} autoplay whether the element should autoplay
+ * @chainable
+ */
+ p5.MediaElement.prototype.autoplay = function(val) {
+ this.elt.setAttribute('autoplay', val);
+ return this;
+ };
+
+ /**
+ * Sets volume for this HTML5 media element. If no argument is given,
+ * returns the current volume.
+ *
+ * @method volume
+ * @return {Number} current volume
+ *
+ * @example
+ * <div><code>
+ * var ele;
+ * function setup() {
+ * // p5.MediaElement objects are usually created
+ * // by calling the createAudio(), createVideo(),
+ * // and createCapture() functions.
+ * // In this example we create
+ * // a new p5.MediaElement via createAudio().
+ * ele = createAudio('assets/lucky_dragons.mp3');
+ * background(250);
+ * textAlign(CENTER);
+ * text('Click to Play!', width / 2, height / 2);
+ * }
+ * function mouseClicked() {
+ * // Here we call the volume() function
+ * // on the sound element to set its volume
+ * // Volume must be between 0.0 and 1.0
+ * ele.volume(0.2);
+ * ele.play();
+ * background(200);
+ * text('You clicked Play!', width / 2, height / 2);
+ * }
+ * </code></div>
+ * <div><code>
+ * var audio;
+ * var counter = 0;
+ *
+ * function loaded() {
+ * audio.play();
+ * }
+ *
+ * function setup() {
+ * audio = createAudio('assets/lucky_dragons.mp3', loaded);
+ * textAlign(CENTER);
+ * }
+ *
+ * function draw() {
+ * if (counter === 0) {
+ * background(0, 255, 0);
+ * text('volume(0.9)', width / 2, height / 2);
+ * } else if (counter === 1) {
+ * background(255, 255, 0);
+ * text('volume(0.5)', width / 2, height / 2);
+ * } else if (counter === 2) {
+ * background(255, 0, 0);
+ * text('volume(0.1)', width / 2, height / 2);
+ * }
+ * }
+ *
+ * function mousePressed() {
+ * counter++;
+ * if (counter === 0) {
+ * audio.volume(0.9);
+ * } else if (counter === 1) {
+ * audio.volume(0.5);
+ * } else if (counter === 2) {
+ * audio.volume(0.1);
+ * } else {
+ * counter = 0;
+ * audio.volume(0.9);
+ * }
+ * }
+ * </code>
+ * </div>
+ */
+ /**
+ * @method volume
+ * @param {Number} val volume between 0.0 and 1.0
+ * @chainable
+ */
+ p5.MediaElement.prototype.volume = function(val) {
+ if (typeof val === 'undefined') {
+ return this.elt.volume;
+ } else {
+ this.elt.volume = val;
+ }
+ };
+
+ /**
+ * If no arguments are given, returns the current playback speed of the
+ * element. The speed parameter sets the speed where 2.0 will play the
+ * element twice as fast, 0.5 will play at half the speed, and -1 will play
+ * the element in normal speed in reverse.(Note that not all browsers support
+ * backward playback and even if they do, playback might not be smooth.)
+ *
+ * @method speed
+ * @return {Number} current playback speed of the element
+ *
+ * @example
+ * <div class='norender notest'><code>
+ * //Clicking the canvas will loop
+ * //the audio sample until the user
+ * //clicks again to stop it
+ *
+ * //We will store the p5.MediaElement
+ * //object in here
+ * var ele;
+ * var button;
+ *
+ * function setup() {
+ * createCanvas(710, 400);
+ * //Here we create a p5.MediaElement object
+ * //using the createAudio() function.
+ * ele = createAudio('assets/beat.mp3');
+ * ele.loop();
+ * background(200);
+ *
+ * button = createButton('2x speed');
+ * button.position(100, 68);
+ * button.mousePressed(twice_speed);
+ *
+ * button = createButton('half speed');
+ * button.position(200, 68);
+ * button.mousePressed(half_speed);
+ *
+ * button = createButton('reverse play');
+ * button.position(300, 68);
+ * button.mousePressed(reverse_speed);
+ *
+ * button = createButton('STOP');
+ * button.position(400, 68);
+ * button.mousePressed(stop_song);
+ *
+ * button = createButton('PLAY!');
+ * button.position(500, 68);
+ * button.mousePressed(play_speed);
+ * }
+ *
+ * function twice_speed() {
+ * ele.speed(2);
+ * }
+ *
+ * function half_speed() {
+ * ele.speed(0.5);
+ * }
+ *
+ * function reverse_speed() {
+ * ele.speed(-1);
+ * }
+ *
+ * function stop_song() {
+ * ele.stop();
+ * }
+ *
+ * function play_speed() {
+ * ele.play();
+ * }
+ * </code></div>
+ */
+ /**
+ * @method speed
+ * @param {Number} speed speed multiplier for element playback
+ * @chainable
+ */
+ p5.MediaElement.prototype.speed = function(val) {
+ if (typeof val === 'undefined') {
+ return this.presetPlaybackRate || this.elt.playbackRate;
+ } else {
+ if (this.loadedmetadata) {
+ this.elt.playbackRate = val;
+ } else {
+ this.presetPlaybackRate = val;
+ }
+ }
+ };
+
+ /**
+ * If no arguments are given, returns the current time of the element.
+ * If an argument is given the current time of the element is set to it.
+ *
+ * @method time
+ * @return {Number} current time (in seconds)
+ *
+ * @example
+ * <div><code>
+ * var ele;
+ * var beginning = true;
+ * function setup() {
+ * //p5.MediaElement objects are usually created
+ * //by calling the createAudio(), createVideo(),
+ * //and createCapture() functions.
+ *
+ * //In this example we create
+ * //a new p5.MediaElement via createAudio().
+ * ele = createAudio('assets/lucky_dragons.mp3');
+ * background(250);
+ * textAlign(CENTER);
+ * text('start at beginning', width / 2, height / 2);
+ * }
+ *
+ * // this function fires with click anywhere
+ * function mousePressed() {
+ * if (beginning === true) {
+ * // here we start the sound at the beginning
+ * // time(0) is not necessary here
+ * // as this produces the same result as
+ * // play()
+ * ele.play().time(0);
+ * background(200);
+ * text('jump 2 sec in', width / 2, height / 2);
+ * beginning = false;
+ * } else {
+ * // here we jump 2 seconds into the sound
+ * ele.play().time(2);
+ * background(250);
+ * text('start at beginning', width / 2, height / 2);
+ * beginning = true;
+ * }
+ * }
+ * </code></div>
+ */
+ /**
+ * @method time
+ * @param {Number} time time to jump to (in seconds)
+ * @chainable
+ */
+ p5.MediaElement.prototype.time = function(val) {
+ if (typeof val === 'undefined') {
+ return this.elt.currentTime;
+ } else {
+ this.elt.currentTime = val;
+ return this;
+ }
+ };
+
+ /**
+ * Returns the duration of the HTML5 media element.
+ *
+ * @method duration
+ * @return {Number} duration
+ *
+ * @example
+ * <div><code>
+ * var ele;
+ * function setup() {
+ * //p5.MediaElement objects are usually created
+ * //by calling the createAudio(), createVideo(),
+ * //and createCapture() functions.
+ * //In this example we create
+ * //a new p5.MediaElement via createAudio().
+ * ele = createAudio('assets/doorbell.mp3');
+ * background(250);
+ * textAlign(CENTER);
+ * text('Click to know the duration!', 10, 25, 70, 80);
+ * }
+ * function mouseClicked() {
+ * ele.play();
+ * background(200);
+ * //ele.duration dislpays the duration
+ * text(ele.duration() + ' seconds', width / 2, height / 2);
+ * }
+ * </code></div>
+ */
+ p5.MediaElement.prototype.duration = function() {
+ return this.elt.duration;
+ };
+ p5.MediaElement.prototype.pixels = [];
+ p5.MediaElement.prototype._ensureCanvas = function() {
+ if (!this.canvas) {
+ this.canvas = document.createElement('canvas');
+ this.drawingContext = this.canvas.getContext('2d');
+ this.setModified(true);
+ }
+ if (this.loadedmetadata) {
+ // wait for metadata for w/h
+ if (this.canvas.width !== this.elt.width) {
+ this.canvas.width = this.elt.width;
+ this.canvas.height = this.elt.height;
+ this.width = this.canvas.width;
+ this.height = this.canvas.height;
+ this._pixelsDirty = true;
+ }
+
+ var currentTime = this.elt.currentTime;
+ if (this._pixelsDirty || this._pixelsTime !== currentTime) {
+ // only update the pixels array if it's dirty, or
+ // if the video time has changed.
+ this._pixelsTime = currentTime;
+ this._pixelsDirty = true;
+
+ this.drawingContext.drawImage(
+ this.elt,
+ 0,
+ 0,
+ this.canvas.width,
+ this.canvas.height
+ );
+ this.setModified(true);
+ }
+ }
+ };
+ p5.MediaElement.prototype.loadPixels = function() {
+ this._ensureCanvas();
+ return p5.Renderer2D.prototype.loadPixels.apply(this, arguments);
+ };
+ p5.MediaElement.prototype.updatePixels = function(x, y, w, h) {
+ if (this.loadedmetadata) {
+ // wait for metadata
+ this._ensureCanvas();
+ p5.Renderer2D.prototype.updatePixels.call(this, x, y, w, h);
+ }
+ this.setModified(true);
+ return this;
+ };
+ p5.MediaElement.prototype.get = function() {
+ this._ensureCanvas();
+ return p5.Renderer2D.prototype.get.apply(this, arguments);
+ };
+ p5.MediaElement.prototype._getPixel = function() {
+ this.loadPixels();
+ return p5.Renderer2D.prototype._getPixel.apply(this, arguments);
+ };
+
+ p5.MediaElement.prototype.set = function(x, y, imgOrCol) {
+ if (this.loadedmetadata) {
+ // wait for metadata
+ this._ensureCanvas();
+ p5.Renderer2D.prototype.set.call(this, x, y, imgOrCol);
+ this.setModified(true);
+ }
+ };
+ p5.MediaElement.prototype.copy = function() {
+ this._ensureCanvas();
+ p5.Renderer2D.prototype.copy.apply(this, arguments);
+ };
+ p5.MediaElement.prototype.mask = function() {
+ this.loadPixels();
+ this.setModified(true);
+ p5.Image.prototype.mask.apply(this, arguments);
+ };
+ /**
+ * helper method for web GL mode to figure out if the element
+ * has been modified and might need to be re-uploaded to texture
+ * memory between frames.
+ * @method isModified
+ * @private
+ * @return {boolean} a boolean indicating whether or not the
+ * image has been updated or modified since last texture upload.
+ */
+ p5.MediaElement.prototype.isModified = function() {
+ return this._modified;
+ };
+ /**
+ * helper method for web GL mode to indicate that an element has been
+ * changed or unchanged since last upload. gl texture upload will
+ * set this value to false after uploading the texture; or might set
+ * it to true if metadata has become available but there is no actual
+ * texture data available yet..
+ * @method setModified
+ * @param {boolean} val sets whether or not the element has been
+ * modified.
+ * @private
+ */
+ p5.MediaElement.prototype.setModified = function(value) {
+ this._modified = value;
+ };
+ /**
+ * Schedule an event to be called when the audio or video
+ * element reaches the end. If the element is looping,
+ * this will not be called. The element is passed in
+ * as the argument to the onended callback.
+ *
+ * @method onended
+ * @param {Function} callback function to call when the
+ * soundfile has ended. The
+ * media element will be passed
+ * in as the argument to the
+ * callback.
+ * @chainable
+ * @example
+ * <div><code>
+ * function setup() {
+ * var audioEl = createAudio('assets/beat.mp3');
+ * audioEl.showControls();
+ * audioEl.onended(sayDone);
+ * }
+ *
+ * function sayDone(elt) {
+ * alert('done playing ' + elt.src);
+ * }
+ * </code></div>
+ */
+ p5.MediaElement.prototype.onended = function(callback) {
+ this._onended = callback;
+ return this;
+ };
+
+ /*** CONNECT TO WEB AUDIO API / p5.sound.js ***/
+
+ /**
+ * Send the audio output of this element to a specified audioNode or
+ * p5.sound object. If no element is provided, connects to p5's master
+ * output. That connection is established when this method is first called.
+ * All connections are removed by the .disconnect() method.
+ *
+ * This method is meant to be used with the p5.sound.js addon library.
+ *
+ * @method connect
+ * @param {AudioNode|Object} audioNode AudioNode from the Web Audio API,
+ * or an object from the p5.sound library
+ */
+ p5.MediaElement.prototype.connect = function(obj) {
+ var audioContext, masterOutput;
+
+ // if p5.sound exists, same audio context
+ if (typeof p5.prototype.getAudioContext === 'function') {
+ audioContext = p5.prototype.getAudioContext();
+ masterOutput = p5.soundOut.input;
+ } else {
+ try {
+ audioContext = obj.context;
+ masterOutput = audioContext.destination;
+ } catch (e) {
+ throw 'connect() is meant to be used with Web Audio API or p5.sound.js';
+ }
+ }
+
+ // create a Web Audio MediaElementAudioSourceNode if none already exists
+ if (!this.audioSourceNode) {
+ this.audioSourceNode = audioContext.createMediaElementSource(this.elt);
+
+ // connect to master output when this method is first called
+ this.audioSourceNode.connect(masterOutput);
+ }
+
+ // connect to object if provided
+ if (obj) {
+ if (obj.input) {
+ this.audioSourceNode.connect(obj.input);
+ } else {
+ this.audioSourceNode.connect(obj);
+ }
+ } else {
+ // otherwise connect to master output of p5.sound / AudioContext
+ this.audioSourceNode.connect(masterOutput);
+ }
+ };
+
+ /**
+ * Disconnect all Web Audio routing, including to master output.
+ * This is useful if you want to re-route the output through
+ * audio effects, for example.
+ *
+ * @method disconnect
+ */
+ p5.MediaElement.prototype.disconnect = function() {
+ if (this.audioSourceNode) {
+ this.audioSourceNode.disconnect();
+ } else {
+ throw 'nothing to disconnect';
+ }
+ };
+
+ /*** SHOW / HIDE CONTROLS ***/
+
+ /**
+ * Show the default MediaElement controls, as determined by the web browser.
+ *
+ * @method showControls
+ * @example
+ * <div><code>
+ * var ele;
+ * function setup() {
+ * //p5.MediaElement objects are usually created
+ * //by calling the createAudio(), createVideo(),
+ * //and createCapture() functions.
+ * //In this example we create
+ * //a new p5.MediaElement via createAudio()
+ * ele = createAudio('assets/lucky_dragons.mp3');
+ * background(200);
+ * textAlign(CENTER);
+ * text('Click to Show Controls!', 10, 25, 70, 80);
+ * }
+ * function mousePressed() {
+ * ele.showControls();
+ * background(200);
+ * text('Controls Shown', width / 2, height / 2);
+ * }
+ * </code></div>
+ */
+ p5.MediaElement.prototype.showControls = function() {
+ // must set style for the element to show on the page
+ this.elt.style['text-align'] = 'inherit';
+ this.elt.controls = true;
+ };
+
+ /**
+ * Hide the default mediaElement controls.
+ * @method hideControls
+ * @example
+ * <div><code>
+ * var ele;
+ * function setup() {
+ * //p5.MediaElement objects are usually created
+ * //by calling the createAudio(), createVideo(),
+ * //and createCapture() functions.
+ * //In this example we create
+ * //a new p5.MediaElement via createAudio()
+ * ele = createAudio('assets/lucky_dragons.mp3');
+ * ele.showControls();
+ * background(200);
+ * textAlign(CENTER);
+ * text('Click to hide Controls!', 10, 25, 70, 80);
+ * }
+ * function mousePressed() {
+ * ele.hideControls();
+ * background(200);
+ * text('Controls hidden', width / 2, height / 2);
+ * }
+ * </code></div>
+ */
+ p5.MediaElement.prototype.hideControls = function() {
+ this.elt.controls = false;
+ };
+
+ /*** SCHEDULE EVENTS ***/
+
+ // Cue inspired by JavaScript setTimeout, and the
+ // Tone.js Transport Timeline Event, MIT License Yotam Mann 2015 tonejs.org
+ var Cue = function(callback, time, id, val) {
+ this.callback = callback;
+ this.time = time;
+ this.id = id;
+ this.val = val;
+ };
+
+ /**
+ * Schedule events to trigger every time a MediaElement
+ * (audio/video) reaches a playback cue point.
+ *
+ * Accepts a callback function, a time (in seconds) at which to trigger
+ * the callback, and an optional parameter for the callback.
+ *
+ * Time will be passed as the first parameter to the callback function,
+ * and param will be the second parameter.
+ *
+ *
+ * @method addCue
+ * @param {Number} time Time in seconds, relative to this media
+ * element's playback. For example, to trigger
+ * an event every time playback reaches two
+ * seconds, pass in the number 2. This will be
+ * passed as the first parameter to
+ * the callback function.
+ * @param {Function} callback Name of a function that will be
+ * called at the given time. The callback will
+ * receive time and (optionally) param as its
+ * two parameters.
+ * @param {Object} [value] An object to be passed as the
+ * second parameter to the
+ * callback function.
+ * @return {Number} id ID of this cue,
+ * useful for removeCue(id)
+ * @example
+ * <div><code>
+ * //
+ * //
+ * function setup() {
+ * noCanvas();
+ *
+ * var audioEl = createAudio('assets/beat.mp3');
+ * audioEl.showControls();
+ *
+ * // schedule three calls to changeBackground
+ * audioEl.addCue(0.5, changeBackground, color(255, 0, 0));
+ * audioEl.addCue(1.0, changeBackground, color(0, 255, 0));
+ * audioEl.addCue(2.5, changeBackground, color(0, 0, 255));
+ * audioEl.addCue(3.0, changeBackground, color(0, 255, 255));
+ * audioEl.addCue(4.2, changeBackground, color(255, 255, 0));
+ * audioEl.addCue(5.0, changeBackground, color(255, 255, 0));
+ * }
+ *
+ * function changeBackground(val) {
+ * background(val);
+ * }
+ * </code></div>
+ */
+ p5.MediaElement.prototype.addCue = function(time, callback, val) {
+ var id = this._cueIDCounter++;
+
+ var cue = new Cue(callback, time, id, val);
+ this._cues.push(cue);
+
+ if (!this.elt.ontimeupdate) {
+ this.elt.ontimeupdate = this._onTimeUpdate.bind(this);
+ }
+
+ return id;
+ };
+
+ /**
+ * Remove a callback based on its ID. The ID is returned by the
+ * addCue method.
+ * @method removeCue
+ * @param {Number} id ID of the cue, as returned by addCue
+ * @example
+ * <div><code>
+ * var audioEl, id1, id2;
+ * function setup() {
+ * background(255, 255, 255);
+ * audioEl = createAudio('assets/beat.mp3');
+ * audioEl.showControls();
+ * // schedule five calls to changeBackground
+ * id1 = audioEl.addCue(0.5, changeBackground, color(255, 0, 0));
+ * audioEl.addCue(1.0, changeBackground, color(0, 255, 0));
+ * audioEl.addCue(2.5, changeBackground, color(0, 0, 255));
+ * audioEl.addCue(3.0, changeBackground, color(0, 255, 255));
+ * id2 = audioEl.addCue(4.2, changeBackground, color(255, 255, 0));
+ * text('Click to remove first and last Cue!', 10, 25, 70, 80);
+ * }
+ * function mousePressed() {
+ * audioEl.removeCue(id1);
+ * audioEl.removeCue(id2);
+ * }
+ * function changeBackground(val) {
+ * background(val);
+ * }
+ * </code></div>
+ */
+ p5.MediaElement.prototype.removeCue = function(id) {
+ for (var i = 0; i < this._cues.length; i++) {
+ if (this._cues[i].id === id) {
+ console.log(id);
+ this._cues.splice(i, 1);
+ }
+ }
+
+ if (this._cues.length === 0) {
+ this.elt.ontimeupdate = null;
+ }
+ };
+
+ /**
+ * Remove all of the callbacks that had originally been scheduled
+ * via the addCue method.
+ * @method clearCues
+ * @param {Number} id ID of the cue, as returned by addCue
+ * @example
+ * <div><code>
+ * var audioEl;
+ * function setup() {
+ * background(255, 255, 255);
+ * audioEl = createAudio('assets/beat.mp3');
+ * //Show the default MediaElement controls, as determined by the web browser
+ * audioEl.showControls();
+ * // schedule calls to changeBackground
+ * background(200);
+ * text('Click to change Cue!', 10, 25, 70, 80);
+ * audioEl.addCue(0.5, changeBackground, color(255, 0, 0));
+ * audioEl.addCue(1.0, changeBackground, color(0, 255, 0));
+ * audioEl.addCue(2.5, changeBackground, color(0, 0, 255));
+ * audioEl.addCue(3.0, changeBackground, color(0, 255, 255));
+ * audioEl.addCue(4.2, changeBackground, color(255, 255, 0));
+ * }
+ * function mousePressed() {
+ * // here we clear the scheduled callbacks
+ * audioEl.clearCues();
+ * // then we add some more callbacks
+ * audioEl.addCue(1, changeBackground, color(2, 2, 2));
+ * audioEl.addCue(3, changeBackground, color(255, 255, 0));
+ * }
+ * function changeBackground(val) {
+ * background(val);
+ * }
+ * </code></div>
+ */
+ p5.MediaElement.prototype.clearCues = function() {
+ this._cues = [];
+ this.elt.ontimeupdate = null;
+ };
+
+ // private method that checks for cues to be fired if events
+ // have been scheduled using addCue(callback, time).
+ p5.MediaElement.prototype._onTimeUpdate = function() {
+ var playbackTime = this.time();
+
+ for (var i = 0; i < this._cues.length; i++) {
+ var callbackTime = this._cues[i].time;
+ var val = this._cues[i].val;
+
+ if (this._prevTime < callbackTime && callbackTime <= playbackTime) {
+ // pass the scheduled callbackTime as parameter to the callback
+ this._cues[i].callback(val);
+ }
+ }
+
+ this._prevTime = playbackTime;
+ };
+
+ /**
+ * Base class for a file.
+ * Used for Element.drop and createFileInput.
+ *
+ * @class p5.File
+ * @constructor
+ * @param {File} file File that is wrapped
+ */
+ p5.File = function(file, pInst) {
+ /**
+ * Underlying File object. All normal File methods can be called on this.
+ *
+ * @property file
+ */
+ this.file = file;
+
+ this._pInst = pInst;
+
+ // Splitting out the file type into two components
+ // This makes determining if image or text etc simpler
+ var typeList = file.type.split('/');
+ /**
+ * File type (image, text, etc.)
+ *
+ * @property type
+ */
+ this.type = typeList[0];
+ /**
+ * File subtype (usually the file extension jpg, png, xml, etc.)
+ *
+ * @property subtype
+ */
+ this.subtype = typeList[1];
+ /**
+ * File name
+ *
+ * @property name
+ */
+ this.name = file.name;
+ /**
+ * File size
+ *
+ * @property size
+ */
+ this.size = file.size;
+
+ /**
+ * URL string containing image data.
+ *
+ * @property data
+ */
+ this.data = undefined;
+ };
+
+ p5.File._createLoader = function(theFile, callback) {
+ var reader = new FileReader();
+ reader.onload = function(e) {
+ var p5file = new p5.File(theFile);
+ p5file.data = e.target.result;
+ callback(p5file);
+ };
+ return reader;
+ };
+
+ p5.File._load = function(f, callback) {
+ // Text or data?
+ // This should likely be improved
+ if (/^text\//.test(f.type)) {
+ p5.File._createLoader(f, callback).readAsText(f);
+ } else if (!/^(video|audio)\//.test(f.type)) {
+ p5.File._createLoader(f, callback).readAsDataURL(f);
+ } else {
+ var file = new p5.File(f);
+ file.data = URL.createObjectURL(f);
+ callback(file);
+ }
+ };
+});
--
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