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59 lines
1.8 KiB
59 lines
1.8 KiB
const VF = Vex.Flow;
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// Create an SVG renderer and attach it to the DIV element named "boo".
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const div = document.querySelector("body")
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const renderer = new VF.Renderer(div, VF.Renderer.Backends.SVG);
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// Size our SVG:
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renderer.resize(1200, 1200);
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// And get a drawing context:
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const context = renderer.getContext();
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const drawNotes = (measureNum) => {
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const staveWidth = 550;
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// Create a stave at position 10, 40 of width 400 on the canvas.
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const stave = new VF.Stave(10+(measureNum*staveWidth), 40, staveWidth);
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// Add a clef and time signature.
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if(measureNum === 0){
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stave.addClef("treble").addTimeSignature("7/8");
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}
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// Connect it to the rendering context and draw!
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stave.setContext(context).draw();
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const notes = [
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new VF.StaveNote({clef: "treble", keys: ["c/4"], duration: "8" }),
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new VF.StaveNote({clef: "treble", keys: ["d/4"], duration: "8" }),
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];
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const notes2 = [
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new VF.StaveNote({clef: "treble", keys: ["b/4"], duration: "8" }),
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new VF.StaveNote({clef: "treble", keys: ["d/4"], duration: "8" }),
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];
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const notes3 = [
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new VF.StaveNote({clef: "treble", keys: ["d/4"], duration: "8" }),
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new VF.StaveNote({clef: "treble", keys: ["d/4"], duration: "8" }),
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new VF.StaveNote({clef: "treble", keys: ["d/4"], duration: "8" }),
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];
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const allNotes = notes.concat(notes2).concat(notes3);
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const beams = [
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new VF.Beam(notes),
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new VF.Beam(notes2),
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new VF.Beam(notes3)
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]
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// Create a voice in 4/4 and add the notes from above
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const voice = new VF.Voice({num_beats: 7, beat_value: 8});
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voice.addTickables(notes);
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// Format and justify the notes to 400 pixels.
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Vex.Flow.Formatter.FormatAndDraw(context, stave, allNotes);
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beams.forEach(function(b) {b.setContext(context).draw()})
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}
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drawNotes(0);
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drawNotes(1);
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