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randommusic
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using api

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master
Matt Huntington 5 years ago
parent 671febc69c
commit 303ad6b203
2 changed files with 44 additions and 8 deletions
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50
app.js
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@ -1,9 +1,45 @@
const vf = new Vex.Flow.Factory({renderer: {elementId: 'main'}}); const VF = Vex.Flow;
const score = vf.EasyScore();
const system = vf.System();
system.addStave({ // Create an SVG renderer and attach it to the DIV element named "boo".
voices: [score.voice(score.notes('C#5/q, B4, A4, G#4'))] var div = document.querySelector("body")
}).addClef('treble').addTimeSignature('4/4'); var renderer = new VF.Renderer(div, VF.Renderer.Backends.SVG);
vf.draw(); // Size our SVG:
renderer.resize(500, 500);
// And get a drawing context:
var context = renderer.getContext();
// Create a stave at position 10, 40 of width 400 on the canvas.
var stave = new VF.Stave(10, 40, 400);
// Add a clef and time signature.
stave.addClef("treble").addTimeSignature("4/4");
// Connect it to the rendering context and draw!
stave.setContext(context).draw();
var notes = [
// A quarter-note C.
new VF.StaveNote({clef: "treble", keys: ["c/4"], duration: "q" }),
// A quarter-note D.
new VF.StaveNote({clef: "treble", keys: ["d/4"], duration: "q" }),
// A quarter-note rest. Note that the key (b/4) specifies the vertical
// position of the rest.
new VF.StaveNote({clef: "treble", keys: ["b/4"], duration: "qr" }),
// A C-Major chord.
new VF.StaveNote({clef: "treble", keys: ["c/4", "e/4", "g/4"], duration: "q" })
];
// Create a voice in 4/4 and add the notes from above
var voice = new VF.Voice({num_beats: 4, beat_value: 4});
voice.addTickables(notes);
// Format and justify the notes to 400 pixels.
var formatter = new VF.Formatter().joinVoices([voice]).format([voice], 400);
// Render voice
voice.draw(context, stave);

2
index.html
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@ -5,7 +5,7 @@
<title></title> <title></title>
<script src="https://unpkg.com/vexflow/releases/vexflow-min.js" charset="utf-8"></script> <script src="https://unpkg.com/vexflow/releases/vexflow-min.js" charset="utf-8"></script>
</head> </head>
<body id="main"> <body>
<script src="app.js" charset="utf-8"></script> <script src="app.js" charset="utf-8"></script>
</body> </body>
</html> </html>

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