 <!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
    <meta name="viewport" content="width=device-width">
    <link rel="stylesheet" href="main.css">
    <title>decodeAudioData example</title>

    <link rel="stylesheet" href="">
    <!--[if lt IE 9]>
      <script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script>
    <![endif]-->
  </head>
  <body>
    <div class="txt-content">
      <div class="play-txt1">
        <p class="s1">S</p>
        <p class="s2">u</p>
        <p class="s3">m</p>
        <p class="s4">m</p>
        <p class="s5">e</p>
        <p class="s6">r</p>
      </div>
      <div class="play-txt2">
        <p class="g1">s</p>
        <p class="g2">o</p>
        <p class="g3">n</p>
        <p class="g4">g</p>
        <p class="g5">s</p>
      </div>
      <!-- <p class="play-txt2">for good vibes</p> -->
    </div>
    <button type="button" class="play" name="button" style="display:none">►</button>
    <button type="button" class="full" name="button">
      <img class="full-img" src="img/full-screen.png" alt="full-screen">
    </button>
    <input class="volume" type="range" min="0" max="100" value="">
    <canvas></canvas>
    <div class="circle"></div>
    <button class="btnA btnW" type="button" name="button"></button>
    <button class="btnB btnW" type="button" name="button"></button>
    <button class="btnC btnW" type="button" name="button"></button>
      <img class="wall wallA" src="img/a.jpeg" alt="flower">
      <img class="wall wallB" src="img/b.jpeg" alt="flower">
      <img class="wall wallC" src="img/c.jpeg" alt="flower">
  </body>
  <script>

  var canvas = document.body.querySelector('canvas');
  var ctx = canvas.getContext('2d') // context 2d  ou webGl
  var context = new (window.AudioContext || window.webkitAudioContext)(); // Création de l'instance
  var analyser = context.createAnalyser();
  var frequencyData = new Uint8Array(this.analyser.frequencyBinCount);
  var frequencyDataLength = frequencyData.length-400;// - aigue
  var width, height, rectWidth = null;
  var soundBuffer = null;
  var url = "sound.mp3";
  var gainNode = context.createGain();

  //SUCCESS
  function onSuccess(buffer) {
    soundBuffer = buffer;

    var play = document.querySelector('.play');
    play.style.display = 'block';
    play.addEventListener('click', onPlayClick);
  }
  //ERROR
  function onError() {
    console.error('Une erreur est survenue lors du decodage du son');
  }
  //ONLOAD SOUND
  function onLoadSound(data) {
    console.log(data);
    context.decodeAudioData(data, onSuccess, onError);
  }
  //CONNEXION enceinte & analyser
  function onPlayClick() {
    var source = context.createBufferSource(); // creates a sound source
    var play = document.querySelector('.play');
    var txt = document.querySelector('.txt-content');
    source.buffer = soundBuffer; // source a jouer
    if(play.id == ""){
      source.connect(gainNode); //Connexion au enceinte
      gainNode.gain.value = 1;
      gainNode.connect(context.destination); //Connexion au enceinte
      play.id = "activated";
      play.innerHTML = "I I";
      txt.style.display = 'block';
    } else {
      gainNode.gain.value = 0;
      gainNode.disconnect(context.destination);//Deco
      play.id = "";
      play.innerHTML = "►";
    }
    source.connect(analyser); // relier a l'analyser sur une autre branche
    source.start(0);

    // VOLUME
    function volume() {
    var volume = document.querySelector('.volume').value;
    gainNode.gain.value = volume;
  };
    volume();
    update();
  }
  //LOAD SOUND
  function loadSound(url, callback) {
    var request = new XMLHttpRequest();
    request.open('GET', url, true);
    request.responseType = 'arraybuffer';

    request.onload = function() {
      callback(request.response)
    }
    request.send();
  }
  //TCHEQUE VAR RESIZE
  function handleResize() {
    width = window.innerWidth;
    height = window.innerHeight;
    canvas.width = width;
    canvas.height = height;
    rectWidth = width / frequencyDataLength;
  }
  //UPDATE
  function update() {
    analyser.getByteFrequencyData(frequencyData);
    draw()

    requestAnimationFrame(update);
  }

  // CREATION BARRE
  function draw() {
    ctx.clearRect(0, 0, width, height);//clear du canvas
    //var gradient = ctx.createLinearGradient(0,0,width,0); //LINEAR gradient
    var gradient = ctx.createRadialGradient(width/2,height/2,5,width/2,height/2,600); //LINEAR gradient
    gradient.addColorStop("0","transparent");
    gradient.addColorStop("0.244","transparent");
    gradient.addColorStop("0.245","cyan");
    gradient.addColorStop("0.5","blue");
    gradient.addColorStop("0.8","red");
    ctx.strokeStyle=gradient;
    // ctx.lineWidth=5;
    for (var i = 0; i < frequencyDataLength; i++) {
      var angle = (Math.PI * 2) / frequencyDataLength * i;
      var rayon =150;//2 taille rayon
      var farRayon = frequencyData[i] * 2.3;//3 taille farRayon
      //var tryr = farRayon + 500; // pointiller
      ctx.beginPath();
      // ctx.moveTo(width/2, height/2); //1 MIDLE
      // ctx.moveTo(rayon*Math.cos(angle),rayon*Math.sin(angle)); // angle
      ctx.moveTo(width/2+rayon*Math.cos(angle),height/2+rayon*Math.sin(angle))//midle + angle
      ctx.lineTo(width/2+farRayon*Math.cos(angle),height/2+farRayon*Math.sin(angle)); //
      ctx.stroke();
    }
  }

  window.addEventListener('resize', handleResize);
  handleResize();
  loadSound(url, onLoadSound);

  </script>
  <script type="text/javascript" src="fullScreen.js"></script>
  <script type="text/javascript" src="wall.js"></script>
</html>

created 3 years ago by Janani A 19BEC1416

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