sophiamari.github.io/experimental.html at main · sophiamari/sophiamari.github.io · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1" />
  <title>Experimental | Sophia Marinova</title>

  <!-- Reuse your main styles (Hydra layering, buttons, fonts, etc.) -->
  <link rel="stylesheet" href="style.css">

  <style>
    /* Page-specific tweaks */
    .container { max-width: 980px; margin: 0 auto; padding: 48px 20px; text-align: center; }
    h1 { font-size: clamp(28px,4vw,40px); margin:18px 0 10px; }
    p.lead { margin: 0 0 24px; opacity: .95; }

    .controls { display:flex; gap:12px; justify-content:center; flex-wrap:wrap; margin-top: 16px; }

    /* Waveform canvas sits above Hydra and below UI */
    #wave-canvas{
      display:block;
      width:min(720px, 92vw);
      height:160px;                 /* CSS height; JS scales for DPR */
      margin:18px auto 8px;
      background:#000;              /* black background */
      border-radius:14px;
      /* soft pink glow & inner ring */
      box-shadow: 0 12px 28px -16px rgba(236,72,153,.55), 0 0 0 1px rgba(236,72,153,.25) inset;
    }

    .hint { font-size: 13px; opacity: .8; margin-top: 4px; }

    /* Pretty file input */
    .file {
      display: inline-block;
      background: #fff;
      border-radius: 999px;
      padding: 10px 14px;
      box-shadow: 0 10px 20px -12px rgba(0,0,0,.25);
      border: 1px solid rgba(0,0,0,.06);
      cursor: pointer;
    }
    .file input { display: none; }
  </style>
</head>
<body>
  <!-- Hydra background -->
  <canvas id="hydra-bg"></canvas>
  <div class="backdrop"></div>

  <main class="container">
    <h1>Experimental</h1>
    <p class="lead">Toggle DJ Mode for spicier visuals, then play a track to see the live sound waveform.</p>

    <!-- Waveform -->
    <canvas id="wave-canvas"></canvas>
    <div class="hint">Tip: click “Choose Song” to load a file, or put a file at <code>music/demo.mp3</code> and hit Play.</div>

    <!-- Controls -->
    <div class="controls">
      <button id="djBtn" class="btn">DJ Mode</button>

      <label class="file">
        <span id="fileLabel">Choose Song</span>
        <input id="filePicker" type="file" accept="audio/*">
      </label>

      <button id="playBtn" class="btn">Play</button>
      <button id="pauseBtn" class="btn" style="display:none;">Pause</button>
    </div>

    <!-- Hidden audio element (we control it via JS) -->
    <audio id="player" crossorigin="anonymous" preload="auto"></audio>
  </main>

  <!-- Hydra synth -->
  <script src="https://unpkg.com/hydra-synth"></script>
  <script>
    /* ---------- Canvas sizing helpers ---------- */
    function fitHydraCanvas(c){
      const dpr = Math.min(window.devicePixelRatio || 1, 2);
      c.width  = Math.floor(innerWidth  * dpr);
      c.height = Math.floor(innerHeight * dpr);
      c.style.width  = innerWidth + 'px';
      c.style.height = innerHeight + 'px';
    }

    const hydraCanvas = document.getElementById('hydra-bg');
    fitHydraCanvas(hydraCanvas);
    addEventListener('resize', () => fitHydraCanvas(hydraCanvas));

    /* ---------- Hydra scenes ---------- */
    function sceneCalm(){
      const kCount = () => 4 + Math.floor(2 * Math.abs(Math.sin((window.time||0) * 0.35)));
      osc(0.9, 0.45, 4.8)
        .kaleid(kCount)
        .diff(osc(0.9, 0.45, 4.8))
        .modulateScale(osc(1.8, -0.22, 1))
        .saturate(0.6)
        .contrast(0.85)
        .brightness(0.2)
        .color(1.08, 1.08, 1.12)
        .out();
    }

    function sceneDJ(){
      const kCount = () => 5 + Math.floor(2 * Math.abs(Math.sin((window.time||0) * 0.8)));
      osc(1.6, 0.6, 8)
        .kaleid(kCount)
        .diff(osc(2.2, 0.5, 9))
        .modulate(osc(3.0, -0.15, 1.2))
        .saturate(1.2)
        .contrast(1.05)
        .brightness(0.1)
        .hue( () => Math.sin((window.time||0) * 0.12) * 0.3 )
        .color(1.25, 1.05, 0.9)
        .out();
    }

    (async () => {
      try {
        if (window.initHydra) {
          await window.initHydra({ feedStrudel: 1, canvas: hydraCanvas });
        } else {
          const hydra = new Hydra({ canvas: hydraCanvas, detectAudio:false });
        }
        sceneCalm();
      } catch (e) {
        console.warn('Hydra init failed:', e);
      }
    })();

    /* ---------- Web Audio: waveform visualizer ---------- */
    const audioEl   = document.getElementById('player');
    const fileInput = document.getElementById('filePicker');
    const fileLabel = document.getElementById('fileLabel');
    const playBtn   = document.getElementById('playBtn');
    const pauseBtn  = document.getElementById('pauseBtn');

    const waveCanvas = document.getElementById('wave-canvas');
    const wCtx = waveCanvas.getContext('2d');

    // scale waveform canvas to device pixel ratio for crisp lines
    function fitWaveCanvas() {
      const dpr = Math.min(window.devicePixelRatio || 1, 2);
      const cssW = Math.min(720, innerWidth * 0.92);
      const cssH = 160;
      waveCanvas.width  = Math.floor(cssW * dpr);
      waveCanvas.height = Math.floor(cssH * dpr);
      waveCanvas.style.width  = cssW + 'px';
      waveCanvas.style.height = cssH + 'px';
      wCtx.setTransform(dpr,0,0,dpr,0,0);
    }
    fitWaveCanvas();
    addEventListener('resize', fitWaveCanvas);

    let audioCtx, srcNode, analyser, dataArray, rafId;
    let isDJ = false;

    const WAVE_GAIN = 1.8; // expand amplitude (1.0 = normal)
    function ensureAudioGraph(){
      if (audioCtx) return;
      audioCtx  = new (window.AudioContext || window.webkitAudioContext)();
      srcNode   = audioCtx.createMediaElementSource(audioEl);
      analyser  = audioCtx.createAnalyser();
      analyser.fftSize = 4096;                 // smoother line
      analyser.smoothingTimeConstant = 0.85;   // mellow motion
      const bufferLen = analyser.frequencyBinCount;
      dataArray = new Uint8Array(bufferLen);
      srcNode.connect(analyser);
      analyser.connect(audioCtx.destination);
    }

    function drawWave(){
      analyser.getByteTimeDomainData(dataArray);
      const w = waveCanvas.width;
      const h = waveCanvas.height;
      const center = h / 2;

      // clear panel (we keep black via CSS; no fill needed)
      wCtx.clearRect(0,0,w,h);

      // center baseline (subtle)
      wCtx.beginPath();
      wCtx.moveTo(0, center);
      wCtx.lineTo(w, center);
      wCtx.strokeStyle = 'rgba(255,255,255,0.08)';
      wCtx.lineWidth = 1;
      wCtx.stroke();

      // waveform path
      wCtx.beginPath();
      const slice = w / dataArray.length;
      for (let i=0; i<dataArray.length; i++){
        const v = (dataArray[i] - 128) / 128;           // -1..+1 centered
        const y = center + v * center * WAVE_GAIN;      // expand around center
        const x = i * slice;
        if (i === 0) wCtx.moveTo(x,y); else wCtx.lineTo(x,y);
      }
      wCtx.lineWidth   = 3;
      wCtx.strokeStyle = '#ff2aa1';                     // bright pink
      wCtx.shadowColor = 'rgba(255,42,161,0.55)';       // glow
      wCtx.shadowBlur  = 8;
      wCtx.stroke();
      wCtx.shadowBlur  = 0;

      rafId = requestAnimationFrame(drawWave);
    }

    function startViz(){
      if (!audioCtx) ensureAudioGraph();
      if (rafId) cancelAnimationFrame(rafId);
      rafId = requestAnimationFrame(drawWave);
    }
    function stopViz(){
      if (rafId) cancelAnimationFrame(rafId);
      rafId = null;
    }

    // Default file (optional)
    audioEl.src = 'music/demo.mp3';

    // File picker
    fileInput.addEventListener('change', () => {
      const f = fileInput.files && fileInput.files[0];
      if (!f) return;
      const url = URL.createObjectURL(f);
      audioEl.src = url;
      fileLabel.textContent = f.name.length > 26 ? f.name.slice(0,23) + '…' : f.name;
      pauseBtn.style.display = 'none';
      playBtn.style.display  = 'inline-block';
    });

    // Play/Pause handlers
    playBtn.addEventListener('click', async () => {
      try {
        ensureAudioGraph();
        await audioEl.play();
        startViz();
        playBtn.style.display  = 'none';
        pauseBtn.style.display = 'inline-block';
      } catch (e) {
        console.warn('Play failed (user gesture or src missing):', e);
      }
    });

    pauseBtn.addEventListener('click', () => {
      audioEl.pause();
      stopViz();
      pauseBtn.style.display = 'none';
      playBtn.style.display  = 'inline-block';
    });

    audioEl.addEventListener('ended', () => {
      stopViz();
      pauseBtn.style.display = 'none';
      playBtn.style.display  = 'inline-block';
    });

    /* ---------- DJ Mode toggle ---------- */
    const djBtn = document.getElementById('djBtn');
    djBtn.addEventListener('click', () => {
      isDJ = !isDJ;
      if (isDJ) {
        sceneDJ();
        djBtn.textContent = 'DJ Mode: ON';
      } else {
        sceneCalm();
        djBtn.textContent = 'DJ Mode';
      }
    });
  </script>
</body>
</html>