I was able to successfully integrate Threejs Effect composer in aframe as a component by exporting everything as THREE.Effectcomposer, THREE.SSAOPass etc. and adding the effect inside a aframe component and i tweaked the AFrame renderer to update the effects in the scene. OutlinePass from threejs worked fine in this code but SSAO is not working and i don't get any errors. Please someone help me figure out the problem. the code for SSAOPass looks like this
AFRAME.registerComponent('ssao', {
init: function () {
this.el.addEventListener('that', evt => this.onEnter());
this.el.addEventListener('mouseleave', evt => this.onLeave());
setTimeout(() => this.el.emit("that"), 2000);
},
onEnter: function () {
const scene = this.el.sceneEl.object3D;
const camera = this.el.sceneEl.camera;
const renderer = this.el.sceneEl.renderer;
const render = renderer.render;
const composer = new THREE.EffectComposer(renderer);
//let renderPass = new THREE.RenderPass(scene, camera);
//let outlinePass = new THREE.OutlinePass(new THREE.Vector2(window.innerWidth, window.innerHeight), scene, camera);
const ssaoPass = new THREE.SSAOPass( scene, camera, window.innerWidth, window.innerHeight );
//composer.addPass(renderPass);
//composer.addPass(outlinePass);
ssaoPass.kernelRadius = 16;
composer.addPass( ssaoPass );
// let objects = [];
// this.el.object3D.traverse(node => {
// if (!node.isMesh) return;
// objects.push(node);
// });
// outlinePass.selectedObjects = objects;
// outlinePass.renderToScreen = true;
// outlinePass.edgeStrength = this.data.strength;
// outlinePass.edgeGlow = this.data.glow;
// outlinePass.visibleEdgeColor.set(this.data.color);
// HACK the AFRAME render method (a bit ugly)
const clock = new THREE.Clock();
this.originalRenderMethod = render;
let calledByComposer = false;
renderer.render = function () {
if (calledByComposer) {
render.apply(renderer, arguments);
} else {
calledByComposer = true;
composer.render(clock.getDelta());
calledByComposer = false;
}
};
},
onLeave: function () {
this.el.sceneEl.renderer.render = this.originalRenderMethod;
},
remove: function () {
this.onLeave();
}
});
I have also created a glitch project which i am sharing here. Please feel free to join and collaborate in my project
Edit link: https://glitch.com/edit/#!/accessible-torpid-partridge
Site link:https://accessible-torpid-partridge.glitch.me
Thanks in advance
The code is correct, all you need is to tweak the exposed SSAOShader uniforms: SSAOPass.kernelRadius, SSAOPass.minDistance, SSAOPass.maxDistance - like in the Three.js example.
Keep in mind - the scale in the example is huge, so the values will need to be different in a default aframe scene.
It's a good idea to be able to dynamically update a component (via setAttribute() if you properly handle updates), so you can see what's going on in realtime. Something like I did here - SSAO in a-frame (also based on Don McCurdys gist.
I've used some basic HTML elements, most threejs examples use dat.GUI - it is made for demo / debug tweaks.
Im using this exact code in both the scenarios.
var msg = new SpeechSynthesisUtterance();
var voices = window.speechSynthesis.getVoices();
msg.voice = voices[1];
msg.text = "hello world";
msg.lang = 'en-US';
speechSynthesis.speak(msg);
If I run this in the chrome console I get a female voice. But if I put the exact code in an index.html and run it, it plays a male voice. Could any one please clarify why this difference occurs. Thanks in advance.
Found the Root cause.
Getting the list of voices in speechSynthesis of Chrome (Web Speech API)
The calls are async, so when I try to run in index.html the voices array is empty. As I suggested when I run this and then use the speak it works fine.
var msg;
var voices;
var timer = setInterval(function() {
voices = speechSynthesis.getVoices();
console.log(voices);
if (voices.length !== 0) {
msg = new SpeechSynthesisUtterance();
msg.voice = voices[0];
speechSynthesis.speak(msg);
msg.lang = 'en-US';
clearInterval(timer);
}
}, 200);
timer();
speechSynthesis.speak("hello world");
Following HTML shows empty array in console on first click:
<!DOCTYPE html>
<html>
<head>
<script>
function test(){
console.log(window.speechSynthesis.getVoices())
}
</script>
</head>
<body>
Test
</body>
</html>
In second click you will get the expected list.
If you add onload event to call this function (<body onload="test()">), then you can get correct result on first click. Note that the first call on onload still doesn't work properly. It returns empty on page load but works afterward.
Questions:
Since it might be a bug in beta version, I gave up on "Why" questions.
Now, the question is if you want to access window.speechSynthesis on page load:
What is the best hack for this issue?
How can you make sure it will load speechSynthesis, on page load?
Background and tests:
I was testing the new features in Web Speech API, then I got to this problem in my code:
<script type="text/javascript">
$(document).ready(function(){
// Browser support messages. (You might need Chrome 33.0 Beta)
if (!('speechSynthesis' in window)) {
alert("You don't have speechSynthesis");
}
var voices = window.speechSynthesis.getVoices();
console.log(voices) // []
$("#test").on('click', function(){
var voices = window.speechSynthesis.getVoices();
console.log(voices); // [SpeechSynthesisVoice, ...]
});
});
</script>
<a id="test" href="#">click here if 'ready()' didn't work</a>
My question was: why does window.speechSynthesis.getVoices() return empty array, after page is loaded and onready function is triggered? As you can see if you click on the link, same function returns an array of available voices of Chrome by onclick triger?
It seems Chrome loads window.speechSynthesis after the page load!
The problem is not in ready event. If I remove the line var voice=... from ready function, for first click it shows empty list in console. But the second click works fine.
It seems window.speechSynthesis needs more time to load after first call. You need to call it twice! But also, you need to wait and let it load before second call on window.speechSynthesis. For example, following code shows two empty arrays in console if you run it for first time:
// First speechSynthesis call
var voices = window.speechSynthesis.getVoices();
console.log(voices);
// Second speechSynthesis call
voices = window.speechSynthesis.getVoices();
console.log(voices);
According to Web Speech API Errata (E11 2013-10-17), the voice list is loaded async to the page. An onvoiceschanged event is fired when they are loaded.
voiceschanged: Fired when the contents of the SpeechSynthesisVoiceList, that the getVoices method will return, have changed. Examples include: server-side synthesis where the list is determined asynchronously, or when client-side voices are installed/uninstalled.
So, the trick is to set your voice from the callback for that event listener:
// wait on voices to be loaded before fetching list
window.speechSynthesis.onvoiceschanged = function() {
window.speechSynthesis.getVoices();
...
};
You can use a setInterval to wait until the voices are loaded before using them however you need and then clearing the setInterval:
var timer = setInterval(function() {
var voices = speechSynthesis.getVoices();
console.log(voices);
if (voices.length !== 0) {
var msg = new SpeechSynthesisUtterance(/*some string here*/);
msg.voice = voices[/*some number here to choose from array*/];
speechSynthesis.speak(msg);
clearInterval(timer);
}
}, 200);
$("#test").on('click', timer);
After studying the behavior on Google Chrome and Firefox, this is what can get all voices:
Since it involves something asynchronous, it might be best done with a promise:
const allVoicesObtained = new Promise(function(resolve, reject) {
let voices = window.speechSynthesis.getVoices();
if (voices.length !== 0) {
resolve(voices);
} else {
window.speechSynthesis.addEventListener("voiceschanged", function() {
voices = window.speechSynthesis.getVoices();
resolve(voices);
});
}
});
allVoicesObtained.then(voices => console.log("All voices:", voices));
Note:
When the event voiceschanged fires, we need to call .getVoices() again. The original array won't be populated with content.
On Google Chrome, we don't have to call getVoices() initially. We only need to listen on the event, and it will then happen. On Firefox, listening is not enough, you have to call getVoices() and then listen on the event voiceschanged, and set the array using getVoices() once you get notified.
Using a promise makes the code more clean. Everything related to getting voices are in this promise code. If you don't use a promise but instead put this code in your speech routine, it is quite messy.
You can write a voiceObtained promise to resolve to a voice you want, and then your function to say something can just do: voiceObtained.then(voice => { }) and inside that handler, call the window.speechSynthesis.speak() to speak something. Or you can even write a promise speechReady("hello world").then(speech => { window.speechSynthesis.speak(speech) }) to say something.
heres the answer
function synthVoice(text) {
const awaitVoices = new Promise(resolve=>
window.speechSynthesis.onvoiceschanged = resolve)
.then(()=> {
const synth = window.speechSynthesis;
var voices = synth.getVoices();
console.log(voices)
const utterance = new SpeechSynthesisUtterance();
utterance.voice = voices[3];
utterance.text = text;
synth.speak(utterance);
});
}
At first i used onvoiceschanged , but it kept firing even after the voices was loaded, so my goal was to avoid onvoiceschanged at all cost.
This is what i came up with. It seems to work so far, will update if it breaks.
loadVoicesWhenAvailable();
function loadVoicesWhenAvailable() {
voices = synth.getVoices();
if (voices.length !== 0) {
console.log("start loading voices");
LoadVoices();
}
else {
setTimeout(function () { loadVoicesWhenAvailable(); }, 10)
}
}
setInterval solution by Salman Oskooi was perfect
Please see https://jsfiddle.net/exrx8e1y/
function myFunction() {
dtlarea=document.getElementById("details");
//dtlarea.style.display="none";
dtltxt="";
var mytimer = setInterval(function() {
var voices = speechSynthesis.getVoices();
//console.log(voices);
if (voices.length !== 0) {
var msg = new SpeechSynthesisUtterance();
msg.rate = document.getElementById("rate").value; // 0.1 to 10
msg.pitch = document.getElementById("pitch").value; //0 to 2
msg.volume = document.getElementById("volume").value; // 0 to 1
msg.text = document.getElementById("sampletext").value;
msg.lang = document.getElementById("lang").value; //'hi-IN';
for(var i=0;i<voices.length;i++){
dtltxt+=voices[i].lang+' '+voices[i].name+'\n';
if(voices[i].lang==msg.lang) {
msg.voice = voices[i]; // Note: some voices don't support altering params
msg.voiceURI = voices[i].voiceURI;
// break;
}
}
msg.onend = function(e) {
console.log('Finished in ' + event.elapsedTime + ' seconds.');
dtlarea.value=dtltxt;
};
speechSynthesis.speak(msg);
clearInterval(mytimer);
}
}, 1000);
}
This works fine on Chrome for MAC, Linux(Ubuntu), Windows and Android
Android has non-standard en_GB wile others have en-GB as language code
Also you will see that same language(lang) has multiple names
On Mac Chrome you get en-GB Daniel besides en-GB Google UK English Female and n-GB Google UK English Male
en-GB Daniel (Mac and iOS)
en-GB Google UK English Female
en-GB Google UK English Male
en_GB English United Kingdom
hi-IN Google हिन्दी
hi-IN Lekha (Mac and iOS)
hi_IN Hindi India
Another way to ensure voices are loaded before you need them is to bind their loading state to a promise, and then dispatch your speech commands from a then:
const awaitVoices = new Promise(done => speechSynthesis.onvoiceschanged = done);
function listVoices() {
awaitVoices.then(()=> {
let voices = speechSynthesis.getVoices();
console.log(voices);
});
}
When you call listVoices, it will either wait for the voices to load first, or dispatch your operation on the next tick.
I used this code to load voices successfully:
<select id="voices"></select>
...
function loadVoices() {
populateVoiceList();
if (speechSynthesis.onvoiceschanged !== undefined) {
speechSynthesis.onvoiceschanged = populateVoiceList;
}
}
function populateVoiceList() {
var allVoices = speechSynthesis.getVoices();
allVoices.forEach(function(voice, index) {
var option = $('<option>').val(index).html(voice.name).prop("selected", voice.default);
$('#voices').append(option);
});
if (allVoices.length > 0 && speechSynthesis.onvoiceschanged !== undefined) {
// unregister event listener (it is fired multiple times)
speechSynthesis.onvoiceschanged = null;
}
}
I found the 'onvoiceschanged' code from this article: https://hacks.mozilla.org/2016/01/firefox-and-the-web-speech-api/
Note: requires JQuery.
Works in Firefox/Safari and Chrome (and in Google Apps Script too - but only in the HTML).
async function speak(txt) {
await initVoices();
const u = new SpeechSynthesisUtterance(txt);
u.voice = speechSynthesis.getVoices()[3];
speechSynthesis.speak(u);
}
function initVoices() {
return new Promise(function (res, rej){
speechSynthesis.getVoices();
if (window.speechSynthesis.onvoiceschanged) {
res();
} else {
window.speechSynthesis.onvoiceschanged = () => res();
}
});
}
While the accepted answer works great but if you're using SPA and not loading full-page, on navigating between links, the voices will not be available.
This will run on a full-page load
window.speechSynthesis.onvoiceschanged
For SPA, it wouldn't run.
You can check if it's undefined, run it, or else, get it from the window object.
An example that works:
let voices = [];
if(window.speechSynthesis.onvoiceschanged == undefined){
window.speechSynthesis.onvoiceschanged = () => {
voices = window.speechSynthesis.getVoices();
}
}else{
voices = window.speechSynthesis.getVoices();
}
// console.log("voices", voices);
I had to do my own research for this to make sure I understood it properly, so just sharing (feel free to edit).
My goal is to:
Get a list of voices available on my device
Populate a select element with those voices (after a particular page loads)
Use easy to understand code
The basic functionality is demonstrated in MDN's official live demo of:
https://github.com/mdn/web-speech-api/tree/master/speak-easy-synthesis
but I wanted to understand it better.
To break the topic down...
SpeechSynthesis
The SpeechSynthesis interface of the Web Speech API is the controller
interface for the speech service; this can be used to retrieve
information about the synthesis voices available on the device, start
and pause speech, and other commands besides.
Source
onvoiceschanged
The onvoiceschanged property of the SpeechSynthesis interface
represents an event handler that will run when the list of
SpeechSynthesisVoice objects that would be returned by the
SpeechSynthesis.getVoices() method has changed (when the voiceschanged
event fires.)
Source
Example A
If my application merely has:
var synth = window.speechSynthesis;
console.log(synth);
console.log(synth.onvoiceschanged);
Chrome developer tools console will show:
Example B
If I change the code to:
var synth = window.speechSynthesis;
console.log("BEFORE");
console.log(synth);
console.log(synth.onvoiceschanged);
console.log("AFTER");
var voices = synth.getVoices();
console.log(voices);
console.log(synth);
console.log(synth.onvoiceschanged);
The before and after states are the same, and voices is an empty array.
Solution
Although i'm not confident implementing Promises, the following worked for me:
Defining the function
var synth = window.speechSynthesis;
// declare so that values are accessible globally
var voices = [];
function set_up_speech() {
return new Promise(function(resolve, reject) {
// get the voices
var voices = synth.getVoices();
// get reference to select element
var $select_topic_speaking_voice = $("#select_topic_speaking_voice");
// for each voice, generate select option html and append to select
for (var i = 0; i < voices.length; i++) {
var option = $("<option></option>");
var suffix = "";
// if it is the default voice, add suffix text
if (voices[i].default) {
suffix = " -- DEFAULT";
}
// create the option text
var option_text = voices[i].name + " (" + voices[i].lang + suffix + ")";
// add the option text
option.text(option_text);
// add option attributes
option.attr("data-lang", voices[i].lang);
option.attr("data-name", voices[i].name);
// append option to select element
$select_topic_speaking_voice.append(option);
}
// resolve the voices value
resolve(voices)
});
}
Calling the function
// in your handler, populate the select element
if (page_title === "something") {
set_up_speech()
}
Android Chrome - turn off data saver. It was helpfull for me.(Chrome 71.0.3578.99)
// wait until the voices load
window.speechSynthesis.onvoiceschanged = function() {
window.speechSynthesis.getVoices();
};
let voices = speechSynthesis.getVoices();
let gotVoices = false;
if (voices.length) {
resolve(voices, message);
} else {
speechSynthesis.onvoiceschanged = () => {
if (!gotVoices) {
voices = speechSynthesis.getVoices();
gotVoices = true;
if (voices.length) resolve(voices, message);
}
};
}
function resolve(voices, message) {
var synth = window.speechSynthesis;
let utter = new SpeechSynthesisUtterance();
utter.lang = 'en-US';
utter.voice = voices[65];
utter.text = message;
utter.volume = 100.0;
synth.speak(utter);
}
Works for Edge, Chrome and Safari - doesn't repeat the sentences.
This simple login form works within the test environment of CS6 (Flash 11.4) but upon exporting does not work. I've narrowed down the issue to the actual URLRequest not working properly. Hopefully somebody can shed some light!
Many thanks, Nick :)
AS3
login.loginSubmit.addEventListener(MouseEvent.CLICK, function(){
if(login.loginPassword.text!="Password" && login.loginPassword.text!=""){
login.loginSubmit.enabled = false;
// Begin URL setup for login
var loginVariables:URLVariables = new URLVariables("email="+login.loginEmail.text+"&password="+login.loginPassword.text);
var loginRequest:URLRequest = new URLRequest();
loginRequest.url = "login.php";
loginRequest.method = URLRequestMethod.POST;
loginRequest.data = loginVariables;
var loginLoader:URLLoader = new URLLoader();
loginLoader.dataFormat = URLLoaderDataFormat.VARIABLES;
loginLoader.addEventListener(Event.COMPLETE, loginHandler);
function loginHandler(event:Event):void {
if(loginLoader.data.passed=="true"){
var hideInitial:Tween = new Tween(uiInitial, "x", Strong.easeOut, 6, -315, 0.5, true);
hideInitial.addEventListener(TweenEvent.MOTION_FINISH, function(){
member.data.email = loginLoader.data.email;
member.data.fname = loginLoader.data.fname;
member.data.lname = loginLoader.data.lname;
member.flush();
});
}else{
trace("error");
}
}
// Send PHP/SQL request
loginLoader.load(loginRequest);
}
});
You need to enable the network access for your published SWF. Go to Publish Settings for Flash (.swf) and Set the "Local playback security" settings to "Access Network Only".
Turns out that there is both a local and external URLRequest, causing trouble with the settings. I've made both the same (external) and of course hosted them on the same domain as the Flash, now works.
I am using OpenLayers to display dynamically loaded images. The code I am using is:
var map;
function init(strURL) {
map = new OpenLayers.Map('map');
var options = { numZoomLevels: 3,
isBaseLayer: true, };
var graphic = new OpenLayers.Layer.Image(
'City Lights',
strURL + "?sc=page",
new OpenLayers.Bounds(-180, -88.759, 180, 88.759),
new OpenLayers.Size(580, 288),
options
);
// graphic.events.on({
// loadstart: function () {
// OpenLayers.Console.log("loadstart");
// },
// loadend: function () {
// OpenLayers.Console.log("loadend");
// }
// });
var jpl_wms = new OpenLayers.Layer.WMS("NASA Global Mosaic",
"http://t1.hypercube.telascience.org/cgi-bin/landsat7",
{ layers: "landsat7" }, options);
map.addLayers([graphic, jpl_wms]);
map.addControl(new OpenLayers.Control.LayerSwitcher());
map.zoomToMaxExtent();
}
I am calling this function on a button click event and passing the strURL (sources of the images) at that time. The result is, with each click a different image is loaded and displayed on the web page but is not clearing the previous image. So I 5 different images on the webpage are shown with 5 clicks and so on.
My javascript knowledge is limited, so my apologies if this is a stupid question. How to stop this behavior? Thanks for any assistance.
Also, I didn't quite understand the lines:
var jpl_wms = new OpenLayers.Layer.WMS("NASA Global Mosaic",
"http://t1.hypercube.telascience.org/cgi-bin/landsat7",
{ layers: "landsat7" }, options);
But I know these lines are needed since I'm getting js error if I remove them.
So currently you are calling init(strURL) with each button click? Divide that code into two parts:
On page load, create map and layer objects
On button click, just update URL of existing image layer. Image layer has setUrl(url) method for that: http://dev.openlayers.org/apidocs/files/OpenLayers/Layer/Image-js.html#OpenLayers.Layer.Image.setUrl
Here is sample, that should explain it: http://jsfiddle.net/mEHrN/6/
About var jpl_wms = ... - it creates WMS layer, that should display Landsat imagery (but that URL doesn't seem to work). If you remove it, remember also to remove it from map.addLayers:
map.addLayers([graphic]);
Probably this was reason, why you got JS error.