move css and js files into folders
This commit is contained in:
+150
-150
@@ -1,150 +1,150 @@
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body {
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font-family: sans-serif;
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text-align: center;
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background: #2a2a2a;
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padding: 20px;
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}
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h1 {
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color: #fff;
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}
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.controls {
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margin-bottom: 30px;
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}
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.controls label {
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color: #fff;
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margin-right: 10px;
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font-size: 16px;
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}
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.controls select {
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padding: 8px 12px;
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font-size: 14px;
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border-radius: 5px;
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border: none;
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background: #fff;
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color: #333;
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cursor: pointer;
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}
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.piano {
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display: flex;
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justify-content: center;
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align-items: flex-end;
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margin-top: 50px;
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background: #111;
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padding: 20px;
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border-radius: 10px;
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box-shadow: 0 10px 40px rgba(0, 0, 0, 0.8);
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}
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.key {
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display: flex;
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align-items: flex-end;
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justify-content: center;
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font-size: 14px;
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cursor: pointer;
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border: 1px solid #222;
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border-radius: 5px;
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user-select: none;
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transition: all 0.05s;
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position: relative;
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min-height: 1em;
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}
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/* Sharp keys may show Carnatic swara labels if they correspond to the chosen scale */
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.key.sharp.sa-root {
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color: #fff;
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font-size: 14px;
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}
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.key.has-label .key-label {
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position: relative;
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display: inline-flex;
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}
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.key.has-label .key-label sub {
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font-size: 0.65em;
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display: inline-block;
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vertical-align: text-bottom;
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line-height: 1;
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position: relative;
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top: 0.18em;
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}
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.key.lower.has-label .key-label::after,
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.key.upper.has-label .key-label::after {
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position: absolute;
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content: '•';
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font-size: 12px;
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color: currentColor;
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pointer-events: none;
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left: 50%;
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transform: translateX(-50%);
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}
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.key.black.has-label .key-label::after {
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color: #777;
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}
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.key.lower.has-label .key-label::after {
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top: 100%;
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margin-top: -2px;
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}
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.key.upper.has-label .key-label::after {
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bottom: 100%;
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margin-bottom: -5px;
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}
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/* White keys */
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.key.white {
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width: 60px;
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height: 250px;
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background: linear-gradient(135deg, #fff 0%, #f5f5f5 100%);
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color: #333;
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margin: 0 -1px;
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padding-bottom: 15px;
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box-shadow: 0 2px 5px rgba(0, 0, 0, 0.4), inset 0 -1px 3px rgba(0, 0, 0, 0.1);
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}
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.key.white:active {
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background: linear-gradient(135deg, #e0e0e0 0%, #d5d5d5 100%);
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box-shadow: 0 1px 2px rgba(0, 0, 0, 0.5), inset 0 1px 3px rgba(0, 0, 0, 0.2);
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transform: translateY(2px);
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}
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/* Black keys */
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.key.black {
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width: 40px;
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height: 160px;
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background: linear-gradient(135deg, #222 0%, #111 100%);
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color: #fff;
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position: relative;
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z-index: 10;
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margin: 0 -20px;
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padding-top: 10px;
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box-shadow: 0 2px 5px rgba(0, 0, 0, 0.8), inset 0 1px 2px rgba(255, 255, 255, 0.1);
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align-self: flex-start;
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}
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.key.black:active {
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background: linear-gradient(135deg, #111 0%, #000 100%);
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box-shadow: 0 1px 2px rgba(0, 0, 0, 0.9), inset 0 1px 2px rgba(255, 255, 255, 0.05);
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transform: translateY(2px);
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}
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.key.sa-root.white {
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box-shadow: 0 2px 5px rgba(0, 0, 0, 0.4), inset 0 -1px 3px rgba(0, 0, 0, 0.1);
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}
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.key.sa-root.black {
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box-shadow: 0 2px 5px rgba(0, 0, 0, 0.8), inset 0 1px 2px rgba(255, 255, 255, 0.1);
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}
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.key.sa-root:not(.sharp) {
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color: #d84315;
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font-weight: 700;
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}
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body {
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font-family: sans-serif;
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text-align: center;
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background: #2a2a2a;
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padding: 20px;
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}
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h1 {
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color: #fff;
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}
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.controls {
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margin-bottom: 30px;
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}
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.controls label {
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color: #fff;
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margin-right: 10px;
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font-size: 16px;
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}
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.controls select {
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padding: 8px 12px;
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font-size: 14px;
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border-radius: 5px;
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border: none;
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background: #fff;
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color: #333;
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cursor: pointer;
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}
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.piano {
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display: flex;
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justify-content: center;
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align-items: flex-end;
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margin-top: 50px;
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background: #111;
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padding: 20px;
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border-radius: 10px;
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box-shadow: 0 10px 40px rgba(0, 0, 0, 0.8);
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}
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.key {
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display: flex;
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align-items: flex-end;
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justify-content: center;
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font-size: 14px;
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cursor: pointer;
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border: 1px solid #222;
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border-radius: 5px;
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user-select: none;
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transition: all 0.05s;
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position: relative;
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min-height: 1em;
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}
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/* Sharp keys may show Carnatic swara labels if they correspond to the chosen scale */
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.key.sharp.sa-root {
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color: #fff;
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font-size: 14px;
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}
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.key.has-label .key-label {
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position: relative;
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display: inline-flex;
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}
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.key.has-label .key-label sub {
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font-size: 0.65em;
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display: inline-block;
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vertical-align: text-bottom;
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line-height: 1;
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position: relative;
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top: 0.18em;
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}
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.key.lower.has-label .key-label::after,
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.key.upper.has-label .key-label::after {
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position: absolute;
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content: '•';
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font-size: 12px;
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color: currentColor;
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pointer-events: none;
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left: 50%;
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transform: translateX(-50%);
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}
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.key.black.has-label .key-label::after {
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color: #777;
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}
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.key.lower.has-label .key-label::after {
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top: 100%;
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margin-top: -2px;
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}
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.key.upper.has-label .key-label::after {
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bottom: 100%;
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margin-bottom: -5px;
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}
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/* White keys */
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.key.white {
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width: 60px;
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height: 250px;
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background: linear-gradient(135deg, #fff 0%, #f5f5f5 100%);
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color: #333;
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margin: 0 -1px;
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padding-bottom: 15px;
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box-shadow: 0 2px 5px rgba(0, 0, 0, 0.4), inset 0 -1px 3px rgba(0, 0, 0, 0.1);
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}
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.key.white:active {
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background: linear-gradient(135deg, #e0e0e0 0%, #d5d5d5 100%);
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box-shadow: 0 1px 2px rgba(0, 0, 0, 0.5), inset 0 1px 3px rgba(0, 0, 0, 0.2);
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transform: translateY(2px);
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}
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/* Black keys */
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.key.black {
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width: 40px;
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height: 160px;
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background: linear-gradient(135deg, #222 0%, #111 100%);
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color: #fff;
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position: relative;
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z-index: 10;
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margin: 0 -20px;
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padding-top: 10px;
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box-shadow: 0 2px 5px rgba(0, 0, 0, 0.8), inset 0 1px 2px rgba(255, 255, 255, 0.1);
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align-self: flex-start;
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}
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.key.black:active {
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background: linear-gradient(135deg, #111 0%, #000 100%);
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box-shadow: 0 1px 2px rgba(0, 0, 0, 0.9), inset 0 1px 2px rgba(255, 255, 255, 0.05);
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transform: translateY(2px);
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}
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.key.sa-root.white {
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box-shadow: 0 2px 5px rgba(0, 0, 0, 0.4), inset 0 -1px 3px rgba(0, 0, 0, 0.1);
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}
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.key.sa-root.black {
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box-shadow: 0 2px 5px rgba(0, 0, 0, 0.8), inset 0 1px 2px rgba(255, 255, 255, 0.1);
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}
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.key.sa-root:not(.sharp) {
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color: #d84315;
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font-weight: 700;
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}
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+193
-193
@@ -1,193 +1,193 @@
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// Initialize audio context lazily to avoid autoplay restrictions
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let audioCtx;
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const NOTE_NAMES = ["C", "C#", "D", "D#", "E", "F", "F#", "G", "G#", "A", "A#", "B"];
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const SVARA_NAMES = {
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full: ["Sa", "Ri", "Ga", "Ma", "Pa", "Dha", "Ni"],
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short: ["S", "R", "G", "M", "P", "D", "N"],
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malayalam: ["സ", "രി", "ഗ", "മ", "പ", "ധ", "നി"]
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};
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const semitoneMap = {
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C: 0,
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"C#": 1,
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D: 2,
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"D#": 3,
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E: 4,
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F: 5,
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"F#": 6,
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G: 7,
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"G#": 8,
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A: 9,
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"A#": 10,
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B: 11,
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Ab: 8,
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Bb: 10
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};
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const ragams = {
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Bhair: {
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intervals: [0, 2, 3, 6, 7, 9, 11],
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namesFull: ["Sa", "Ri", "Ga", "Ma", "Pa", "Dha", "Ni"],
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namesShort: ["S", "R", "G", "M", "P", "D", "N"],
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namesMalayalam: ["സ", "രി", "ഗ", "മ", "പ", "ധ", "നി"],
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variantNumbers: ["", "2", "2", "1", "", "2", "2"]
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},
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Kalyani: {
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intervals: [0, 2, 4, 6, 7, 9, 11],
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namesFull: ["Sa", "Ri", "Ga", "Ma", "Pa", "Dha", "Ni"],
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namesShort: ["S", "R", "G", "M", "P", "D", "N"],
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namesMalayalam: ["സ", "രി", "ഗ", "മ", "പ", "ധ", "നി"],
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variantNumbers: ["", "2", "3", "2", "", "2", "3"]
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},
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Mayamalavagowla: {
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intervals: [0, 1, 4, 5, 7, 8, 11],
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namesFull: ["Sa", "Ri", "Ga", "Ma", "Pa", "Dha", "Ni"],
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namesShort: ["S", "R", "G", "M", "P", "D", "N"],
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namesMalayalam: ["സ", "രി", "ഗ", "മ", "പ", "ധ", "നി"],
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variantNumbers: ["", "1", "3", "1", "", "1", "3"]
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},
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Mohanam: {
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intervals: [0, 2, 4, 7, 9],
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namesFull: ["Sa", "Ri", "Ga", "Pa", "Dha"],
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namesShort: ["S", "R", "G", "P", "D"],
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namesMalayalam: ["സ", "രി", "ഗ", "പ", "ധ"],
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variantNumbers: ["", "2", "3", "", "2"]
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},
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Shankarabharanam: {
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intervals: [0, 2, 4, 5, 7, 9, 11],
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namesFull: ["Sa", "Ri", "Ga", "Ma", "Pa", "Dha", "Ni"],
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namesShort: ["S", "R", "G", "M", "P", "D", "N"],
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namesMalayalam: ["സ", "രി", "ഗ", "മ", "പ", "ധ", "നി"],
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variantNumbers: ["", "2", "3", "1", "", "2", "3"]
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}
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};
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const ROOT_OCTAVE = 4;
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const SOUND_OCTAVE_OFFSET = -12;
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const svaraNamesSelect = document.getElementById("svaraNames");
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const svaraStyleSelect = document.getElementById("svaraStyle");
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const startingNoteSelect = document.getElementById("startingNote");
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const ragamSelect = document.getElementById("ragamSelect");
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const pianoElement = document.getElementById("piano");
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function normalizeSemitone(value) {
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return ((value % 12) + 12) % 12;
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}
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function absFrequency(absSemitone) {
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const a4Abs = 4 * 12 + semitoneMap.A; // fixed A4 reference for real pitch
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const soundAbsSemitone = absSemitone + SOUND_OCTAVE_OFFSET;
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return 440 * Math.pow(2, (soundAbsSemitone - a4Abs) / 12);
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}
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function noteNameToAbs(noteName) {
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return ROOT_OCTAVE * 12 + semitoneMap[noteName];
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}
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function getSwaraLabel(absSemitone, startAbs, svaraNames, ragam, svaraStyle) {
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const diff = normalizeSemitone(absSemitone - startAbs);
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const intervalIndex = ragam.intervals.indexOf(diff);
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if (intervalIndex === -1) {
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return "";
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}
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const baseLabel = svaraNames[intervalIndex];
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if (svaraStyle === "variant" && ragam.variantNumbers) {
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const variant = ragam.variantNumbers[intervalIndex];
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if (variant) {
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return `${baseLabel}<sup>${variant}</sup>`;
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}
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}
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return baseLabel;
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}
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function buildKeyHtml(absSemitone, startAbs, svaraNames, ragam, svaraStyle) {
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const noteName = NOTE_NAMES[normalizeSemitone(absSemitone)];
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const isSharp = noteName.includes("#");
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||||
const label = getSwaraLabel(absSemitone, startAbs, svaraNames, ragam, svaraStyle);
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||||
const classes = ["key", isSharp ? "black" : "white"];
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||||
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||||
if (absSemitone < startAbs) {
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||||
classes.push("lower");
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||||
} else if (absSemitone > startAbs + 11) {
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classes.push("upper");
|
||||
}
|
||||
|
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if (normalizeSemitone(absSemitone - startAbs) === 0) {
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classes.push("sa-root");
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||||
}
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||||
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if (label) {
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classes.push("has-label");
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}
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const content = label ? `<span class="key-label">${label}</span>` : "";
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||||
return `<div class="${classes.join(" ")}" data-abs="${absSemitone}">${content}</div>`;
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||||
}
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||||
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function renderKeyboard() {
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||||
const startNote = startingNoteSelect.value;
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||||
const svaraNames = SVARA_NAMES[svaraNamesSelect.value] || SVARA_NAMES.full;
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const svaraStyle = svaraStyleSelect.value;
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const ragam = ragams[ragamSelect.value];
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const startAbs = noteNameToAbs(startNote);
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||||
const lowerPaAbs = startAbs - 5;
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||||
const upperPaAbs = startAbs + 19;
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||||
let html = "";
|
||||
|
||||
for (let abs = lowerPaAbs; abs <= upperPaAbs; abs += 1) {
|
||||
html += buildKeyHtml(abs, startAbs, svaraNames, ragam, svaraStyle);
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||||
}
|
||||
|
||||
pianoElement.innerHTML = html;
|
||||
attachKeyListeners();
|
||||
}
|
||||
|
||||
function attachKeyListeners() {
|
||||
const keys = pianoElement.querySelectorAll(".key");
|
||||
keys.forEach((key) => {
|
||||
key.addEventListener("click", () => {
|
||||
playNote(parseInt(key.dataset.abs, 10));
|
||||
});
|
||||
});
|
||||
}
|
||||
|
||||
function ensureAudioContext() {
|
||||
if (!audioCtx) {
|
||||
audioCtx = new (window.AudioContext || window.webkitAudioContext)();
|
||||
}
|
||||
return audioCtx;
|
||||
}
|
||||
|
||||
async function playNote(absSemitone) {
|
||||
const ctx = ensureAudioContext();
|
||||
if (ctx.state === "suspended") {
|
||||
await ctx.resume();
|
||||
}
|
||||
|
||||
const freq = absFrequency(absSemitone);
|
||||
|
||||
const oscillator = ctx.createOscillator();
|
||||
const gainNode = ctx.createGain();
|
||||
|
||||
oscillator.type = "sine";
|
||||
oscillator.frequency.setValueAtTime(freq, ctx.currentTime);
|
||||
|
||||
oscillator.connect(gainNode);
|
||||
gainNode.connect(ctx.destination);
|
||||
|
||||
gainNode.gain.setValueAtTime(0.2, ctx.currentTime);
|
||||
oscillator.start();
|
||||
oscillator.stop(ctx.currentTime + 0.5);
|
||||
}
|
||||
|
||||
renderKeyboard();
|
||||
svaraNamesSelect.addEventListener("change", renderKeyboard);
|
||||
svaraStyleSelect.addEventListener("change", renderKeyboard);
|
||||
startingNoteSelect.addEventListener("change", renderKeyboard);
|
||||
ragamSelect.addEventListener("change", renderKeyboard);
|
||||
|
||||
|
||||
// Initialize audio context lazily to avoid autoplay restrictions
|
||||
let audioCtx;
|
||||
|
||||
const NOTE_NAMES = ["C", "C#", "D", "D#", "E", "F", "F#", "G", "G#", "A", "A#", "B"];
|
||||
|
||||
const SVARA_NAMES = {
|
||||
full: ["Sa", "Ri", "Ga", "Ma", "Pa", "Dha", "Ni"],
|
||||
short: ["S", "R", "G", "M", "P", "D", "N"],
|
||||
malayalam: ["സ", "രി", "ഗ", "മ", "പ", "ധ", "നി"]
|
||||
};
|
||||
|
||||
const semitoneMap = {
|
||||
C: 0,
|
||||
"C#": 1,
|
||||
D: 2,
|
||||
"D#": 3,
|
||||
E: 4,
|
||||
F: 5,
|
||||
"F#": 6,
|
||||
G: 7,
|
||||
"G#": 8,
|
||||
A: 9,
|
||||
"A#": 10,
|
||||
B: 11,
|
||||
Ab: 8,
|
||||
Bb: 10
|
||||
};
|
||||
const ragams = {
|
||||
Bhair: {
|
||||
intervals: [0, 2, 3, 6, 7, 9, 11],
|
||||
namesFull: ["Sa", "Ri", "Ga", "Ma", "Pa", "Dha", "Ni"],
|
||||
namesShort: ["S", "R", "G", "M", "P", "D", "N"],
|
||||
namesMalayalam: ["സ", "രി", "ഗ", "മ", "പ", "ധ", "നി"],
|
||||
variantNumbers: ["", "2", "2", "1", "", "2", "2"]
|
||||
},
|
||||
Kalyani: {
|
||||
intervals: [0, 2, 4, 6, 7, 9, 11],
|
||||
namesFull: ["Sa", "Ri", "Ga", "Ma", "Pa", "Dha", "Ni"],
|
||||
namesShort: ["S", "R", "G", "M", "P", "D", "N"],
|
||||
namesMalayalam: ["സ", "രി", "ഗ", "മ", "പ", "ധ", "നി"],
|
||||
variantNumbers: ["", "2", "3", "2", "", "2", "3"]
|
||||
},
|
||||
Mayamalavagowla: {
|
||||
intervals: [0, 1, 4, 5, 7, 8, 11],
|
||||
namesFull: ["Sa", "Ri", "Ga", "Ma", "Pa", "Dha", "Ni"],
|
||||
namesShort: ["S", "R", "G", "M", "P", "D", "N"],
|
||||
namesMalayalam: ["സ", "രി", "ഗ", "മ", "പ", "ധ", "നി"],
|
||||
variantNumbers: ["", "1", "3", "1", "", "1", "3"]
|
||||
},
|
||||
Mohanam: {
|
||||
intervals: [0, 2, 4, 7, 9],
|
||||
namesFull: ["Sa", "Ri", "Ga", "Pa", "Dha"],
|
||||
namesShort: ["S", "R", "G", "P", "D"],
|
||||
namesMalayalam: ["സ", "രി", "ഗ", "പ", "ധ"],
|
||||
variantNumbers: ["", "2", "3", "", "2"]
|
||||
},
|
||||
Shankarabharanam: {
|
||||
intervals: [0, 2, 4, 5, 7, 9, 11],
|
||||
namesFull: ["Sa", "Ri", "Ga", "Ma", "Pa", "Dha", "Ni"],
|
||||
namesShort: ["S", "R", "G", "M", "P", "D", "N"],
|
||||
namesMalayalam: ["സ", "രി", "ഗ", "മ", "പ", "ധ", "നി"],
|
||||
variantNumbers: ["", "2", "3", "1", "", "2", "3"]
|
||||
}
|
||||
};
|
||||
const ROOT_OCTAVE = 4;
|
||||
const SOUND_OCTAVE_OFFSET = -12;
|
||||
|
||||
const svaraNamesSelect = document.getElementById("svaraNames");
|
||||
const svaraStyleSelect = document.getElementById("svaraStyle");
|
||||
const startingNoteSelect = document.getElementById("startingNote");
|
||||
const ragamSelect = document.getElementById("ragamSelect");
|
||||
const pianoElement = document.getElementById("piano");
|
||||
|
||||
function normalizeSemitone(value) {
|
||||
return ((value % 12) + 12) % 12;
|
||||
}
|
||||
|
||||
function absFrequency(absSemitone) {
|
||||
const a4Abs = 4 * 12 + semitoneMap.A; // fixed A4 reference for real pitch
|
||||
const soundAbsSemitone = absSemitone + SOUND_OCTAVE_OFFSET;
|
||||
return 440 * Math.pow(2, (soundAbsSemitone - a4Abs) / 12);
|
||||
}
|
||||
|
||||
function noteNameToAbs(noteName) {
|
||||
return ROOT_OCTAVE * 12 + semitoneMap[noteName];
|
||||
}
|
||||
|
||||
function getSwaraLabel(absSemitone, startAbs, svaraNames, ragam, svaraStyle) {
|
||||
const diff = normalizeSemitone(absSemitone - startAbs);
|
||||
const intervalIndex = ragam.intervals.indexOf(diff);
|
||||
|
||||
if (intervalIndex === -1) {
|
||||
return "";
|
||||
}
|
||||
|
||||
const baseLabel = svaraNames[intervalIndex];
|
||||
if (svaraStyle === "variant" && ragam.variantNumbers) {
|
||||
const variant = ragam.variantNumbers[intervalIndex];
|
||||
if (variant) {
|
||||
return `${baseLabel}<sup>${variant}</sup>`;
|
||||
}
|
||||
}
|
||||
|
||||
return baseLabel;
|
||||
}
|
||||
|
||||
function buildKeyHtml(absSemitone, startAbs, svaraNames, ragam, svaraStyle) {
|
||||
const noteName = NOTE_NAMES[normalizeSemitone(absSemitone)];
|
||||
const isSharp = noteName.includes("#");
|
||||
const label = getSwaraLabel(absSemitone, startAbs, svaraNames, ragam, svaraStyle);
|
||||
const classes = ["key", isSharp ? "black" : "white"];
|
||||
|
||||
if (absSemitone < startAbs) {
|
||||
classes.push("lower");
|
||||
} else if (absSemitone > startAbs + 11) {
|
||||
classes.push("upper");
|
||||
}
|
||||
|
||||
if (normalizeSemitone(absSemitone - startAbs) === 0) {
|
||||
classes.push("sa-root");
|
||||
}
|
||||
|
||||
if (label) {
|
||||
classes.push("has-label");
|
||||
}
|
||||
|
||||
const content = label ? `<span class="key-label">${label}</span>` : "";
|
||||
return `<div class="${classes.join(" ")}" data-abs="${absSemitone}">${content}</div>`;
|
||||
}
|
||||
|
||||
function renderKeyboard() {
|
||||
const startNote = startingNoteSelect.value;
|
||||
const svaraNames = SVARA_NAMES[svaraNamesSelect.value] || SVARA_NAMES.full;
|
||||
const svaraStyle = svaraStyleSelect.value;
|
||||
const ragam = ragams[ragamSelect.value];
|
||||
const startAbs = noteNameToAbs(startNote);
|
||||
const lowerPaAbs = startAbs - 5;
|
||||
const upperPaAbs = startAbs + 19;
|
||||
let html = "";
|
||||
|
||||
for (let abs = lowerPaAbs; abs <= upperPaAbs; abs += 1) {
|
||||
html += buildKeyHtml(abs, startAbs, svaraNames, ragam, svaraStyle);
|
||||
}
|
||||
|
||||
pianoElement.innerHTML = html;
|
||||
attachKeyListeners();
|
||||
}
|
||||
|
||||
function attachKeyListeners() {
|
||||
const keys = pianoElement.querySelectorAll(".key");
|
||||
keys.forEach((key) => {
|
||||
key.addEventListener("click", () => {
|
||||
playNote(parseInt(key.dataset.abs, 10));
|
||||
});
|
||||
});
|
||||
}
|
||||
|
||||
function ensureAudioContext() {
|
||||
if (!audioCtx) {
|
||||
audioCtx = new (window.AudioContext || window.webkitAudioContext)();
|
||||
}
|
||||
return audioCtx;
|
||||
}
|
||||
|
||||
async function playNote(absSemitone) {
|
||||
const ctx = ensureAudioContext();
|
||||
if (ctx.state === "suspended") {
|
||||
await ctx.resume();
|
||||
}
|
||||
|
||||
const freq = absFrequency(absSemitone);
|
||||
|
||||
const oscillator = ctx.createOscillator();
|
||||
const gainNode = ctx.createGain();
|
||||
|
||||
oscillator.type = "sine";
|
||||
oscillator.frequency.setValueAtTime(freq, ctx.currentTime);
|
||||
|
||||
oscillator.connect(gainNode);
|
||||
gainNode.connect(ctx.destination);
|
||||
|
||||
gainNode.gain.setValueAtTime(0.2, ctx.currentTime);
|
||||
oscillator.start();
|
||||
oscillator.stop(ctx.currentTime + 0.5);
|
||||
}
|
||||
|
||||
renderKeyboard();
|
||||
svaraNamesSelect.addEventListener("change", renderKeyboard);
|
||||
svaraStyleSelect.addEventListener("change", renderKeyboard);
|
||||
startingNoteSelect.addEventListener("change", renderKeyboard);
|
||||
ragamSelect.addEventListener("change", renderKeyboard);
|
||||
|
||||
|
||||
Reference in New Issue
Block a user