VexFlow 装飾音符

VexFlow 使い方に戻る。

概要

　いったん。例示の楽譜をリセットしましょう。ごちゃごちゃし過ぎてきましたね。装飾音符簡単じゃなかったな。サンプルと同じようには動かんかった。謎だわ。VexFlow。まだまだ管理人を悩ませおるわ。公式サンプルでは引数をオブジェクトを { notes: gracenotes0, slur: true } のように指定する感じですが、普通にVex.Flow.GraceNoteGroupオブジェクトからそれをするとエラーになります。f = new Factory(なんたら);のような f オブジェクトから動かすとオブジェクトがf.GraceNoteGroup({ notes: gracenotes0, slur: true }) が設定できるみたいですね。それがいやで、VexFlowのソースを変更してみたりしました。格闘の様子はこちらの記事から見ることができます。普通にVex.Flow.GraceNoteGroupからやる場合は第一引数がnotes:キーの対にあたるオブジェクトを、第二引数にはslur:の対にあたるブール値を設定するといいみたいです。よくよく調べてみるとVex.Flow.Accidental({type:'#'})も同じような仕組みで、このようにオブジェクトを指定すると動きませんでした。第一引数に直接typeの対になる値を記述するとVex.Flow.Accidental('#')のようにして使えるみたいですね。Accidentalはtypeだけしか設定しないので、あまりややこしくないですね。GraceNoteGroupはnotesとslurを設定するので、引数が二個いる感じです。二つ目の引数は省略しても動きます。デフォルトはfalseです。装飾音符のスラーダサいっすね。シャープの上を通過するカーブを描くなんてね。もっと違う方法でカーブが描けないか挑戦する必要がありそう。道のりは長いなコレ。ちょっと離れ過ぎて配置されるのも納得がいかないけどつめる設定方法も無いみたいだし。

　スーパーリロードか履歴を消さないと新しいVexFlowに差し替えた効果は見れないので、ちゃんと楽譜が表示されない人はやってみて、それでもちゃんと表示されない時は、管理人が開発段階なので、不具合を巻き起こしている可能性があります。スーパーリロードのせいが4割、管理人が開発段階で放置して見れないが6割くらいかな。そういう意味ではJavaScriptファイルは差し替える都度ファイル名を変えてキャッシュを使わないようにするのが最も親切なんだろうな。でも全部のファイル名を変えるなんて出来ないし。難しいことになってるなWeb閲覧者側に勘付かせるのも手なのかも知れない。スーパーリロードや履歴って何？という知識も与えなきゃいけない。

　

装飾音符

　コードは以下のとおりです。

<div id="yonet202403Mid_Output01"></div>
<script>
///////////////////////
(function(){
class Position {
  constructor(x, y) {
    this.x = x;
    this.y = y;
  }
}
var VF = Vex.Flow;
const Instrument1 = new Position(0, 0);
const Instrument2 = new Position(0, 0);
(function(){
const {
  Factory,
  Stave,
  StaveNote,
  Formatter,
  Voice,
  StaveTie,
  BarLine,
  StaveConnector,
  Modifier,
  RenderContext,
  TextDynamics,
  Articulation,
  TextNote,
  Crescendo,
  Renderer
} = Vex.Flow;

let nscale = 0.64;
let nwidth = 1040;
let nheight = 720;

let nHeadMargin = 70;
let nStaveWidth = 350;

const f = new Factory({ 
  renderer: { elementId: 'yonet202403Mid_Output01', width: nwidth, height: nheight * nscale }
  });
const ctx = f.getContext();
ctx.scale(nscale, nscale);

const defaultStyle = {
  lineWidth: ctx.lineWidth,
  strokeStyle: ctx.strokeStyle,
};



for (let i = 0; i <= nwidth * (1 / nscale); i += 10) {
  ctx.beginPath();
  ctx.moveTo(0 + i, 0);
  ctx.lineTo(0 + i, nheight);
  if (i % 100 === 0){
    ctx.setLineWidth(1);
    ctx.setStrokeStyle('rgba(200, 200, 200, 0.8)');
  }
  else{
    ctx.setLineWidth(0.5);
    ctx.setStrokeStyle('rgba(230, 230, 230, 0.8)');
  }
  ctx.stroke();
}

for (let i = 0; i <= nheight; i += 10) {
  ctx.beginPath();
  ctx.moveTo(0, i);
  ctx.lineTo(nwidth * (1 / nscale), i);
  if (i % 100 === 0){
    ctx.setLineWidth(1);
    ctx.setStrokeStyle('rgba(200, 200, 200, 0.8)');
  }
  else{
    ctx.setLineWidth(0.5);
    ctx.setStrokeStyle('rgba(230, 230, 230, 0.8)');
  }
  ctx.stroke();
}

ctx.lineWidth = defaultStyle.lineWidth;
ctx.strokeStyle = defaultStyle.strokeStyle;

const stave1 = new Stave(80, 150, nHeadMargin + nStaveWidth).setContext(ctx);
stave1.setClef("treble").setContext(ctx);
stave1.setTimeSignature('4/4').setContext(ctx);
stave1.setSection("A", 0);
stave1.setMeasure(1);
stave1.setTempo({ duration: "q", dots: 0, bpm: 120 }, 0);
stave1.setBegBarType(VF.Barline.type.REPEAT_BEGIN);//BarLine.type.REPEAT_BEGIN

Instrument1.x = stave1.x - 30;
Instrument1.y = stave1.y + 90; 

stave1.draw();


const notes1 = [
  new StaveNote({ keys: ["d/5"], duration: "8", stem_direction: -1 }),
  new StaveNote({ keys: ["e/5"], duration: "8", stem_direction: -1 }),
  new StaveNote({ keys: ["f/5"], duration: "8", stem_direction: -1 }),
  new StaveNote({ keys: ["g/5"], duration: "8", stem_direction: -1 }),
  new StaveNote({ keys: ["a/5"], duration: "8", stem_direction: -1 }),
  new StaveNote({ keys: ["b/5"], duration: "8", stem_direction: -1 }),
  new StaveNote({ keys: ["c/6"], duration: "8", stem_direction: -1 }),
  new StaveNote({ keys: ["d/6"], duration: "8", stem_direction: -1 }),
];
notes1[0].addModifier(new VF.Articulation('a.').setPosition(3));
notes1[1].addModifier(new VF.Articulation('av').setPosition(3));
notes1[2].addModifier(new VF.Articulation('a>').setPosition(3));
notes1[3].addModifier(new VF.Articulation('a^').setPosition(3));
notes1[4].addModifier(new VF.Articulation('a-').setPosition(3));
notes1[5].addModifier(new VF.Articulation('a+').setPosition(3));
notes1[6].addModifier(new VF.Articulation('ao').setPosition(3));
notes1[7].addModifier(new VF.Articulation('a|').setPosition(3));

Formatter.FormatAndDraw(ctx, stave1, notes1);

var stave2 = new Vex.Flow.Stave(stave1.width + stave1.x, stave1.y, nStaveWidth);
var stave1002 = new Vex.Flow.Stave(stave1.width + stave1.x, stave1.y + 120, 0);
stave2.setEndBarType(VF.Barline.type.REPEAT_BOTH);
stave2.setMeasure(2);
stave2.setTempo({ name: "Andante", note: "8", bpm: 120 }, 0);
stave2.setContext(ctx).draw();

var note2_1 = new Vex.Flow.StaveNote({ keys: ["F/4"], duration: "8" });
var note2_2 = new Vex.Flow.StaveNote({ keys: ["C/5"], duration: "8", stem_direction: -1 });
var note2_3 = new Vex.Flow.StaveNote({ keys: ["D/4"], duration: "8" });
var note2_4 = new Vex.Flow.StaveNote({ keys: ["C/4"], duration: "8" });
var note2_5 = new Vex.Flow.StaveNote({ keys: ["G/4"], duration: "8" });
var note2_6 = new Vex.Flow.StaveNote({ keys: ["F/4"], duration: "8" });
var note2_7 = new Vex.Flow.StaveNote({ keys: ["G/4"], duration: "8" });
var note2_8 = new Vex.Flow.StaveNote({ keys: ["F/4"], duration: "8" });

note2_1.addModifier(new VF.Articulation('am').setPosition(4));
note2_2.addModifier(new VF.Articulation('a@a').setPosition(3));
note2_3.addModifier(new VF.Articulation('a@u').setPosition(4));
note2_4.addModifier(new VF.Articulation('a-').setPosition(4));
note2_4.addModifier(new VF.Articulation('a.').setPosition(4));

var stave2Voice = new Vex.Flow.Voice({ num_beats: 4, beat_value: 4 });
stave2Voice.addTickables([note2_1, note2_2, note2_3, note2_4, note2_5, note2_6, note2_7, note2_8]);

var formatter2 = new Vex.Flow.Formatter().joinVoices([stave2Voice]);//.format([stave2Voice], nStaveWidth);
formatter2.formatToStave([stave2Voice], stave2);

stave2Voice.draw(ctx, stave2);

var Dynamics2_1 = new Vex.Flow.TextDynamics({ text: "sfz", duration: "2" });
var Dynamics2_3 = new Vex.Flow.TextDynamics({ text: "p", duration: "4" });
var Dynamics2_4 = new Vex.Flow.TextDynamics({ text: "f", duration: "4" });
var stave2VoiceDynamics = new Vex.Flow.Voice({ num_beats: 4, beat_value: 4 });
stave2VoiceDynamics.addTickables([Dynamics2_1, Dynamics2_3, Dynamics2_4]);


var Dynamics_formatter2 = new Vex.Flow.Formatter().joinVoices([stave2VoiceDynamics]);
Dynamics_formatter2.format([stave2VoiceDynamics], nStaveWidth);

stave2VoiceDynamics.draw(ctx, stave1002);

var note2_1_X = note2_1.getAbsoluteX();
var staveFrom1To4_Y = note2_1.getStave().getYForLine(2.5);

const stave3 = new Stave(stave2.width + stave2.x, stave1.y, nStaveWidth).setContext(ctx);
stave3.setEndBarType(VF.Barline.type.NONE);
stave3.setSection("B", 0);
stave3.setMeasure(3);
stave3.draw();


const stave4 = new Stave(stave3.width + stave3.x, stave1.y, nStaveWidth).setContext(ctx);
stave4.setBegBarType(VF.Barline.type.NONE);
stave4.setEndBarType(VF.Barline.type.REPEAT_END);
stave4.setMeasure(4);
stave4.draw();

const notes4 = [
  new StaveNote({ keys: ["c/4", "e/4", "g/4", "b/4"], duration: "4" }),
  new StaveNote({ keys: ["d/4", "f/4", "a/4", "c/5"], duration: "4" }),
  new StaveNote({ keys: ["e/4", "g/4", "b/4", "d/5"], duration: "4" }),
  new StaveNote({ keys: ["f/4", "a/4", "c/5", "e/5"], duration: "4" })
];
notes4[0].addStroke(0, new VF.Stroke(3));
notes4[1].addStroke(0, new VF.Stroke(4));
notes4[2].addStroke(0, new VF.Stroke(3));
notes4[3].addStroke(0, new VF.Stroke(4));

var stave4Voice = new Vex.Flow.Voice({ num_beats: 4, beat_value: 4 });
stave4Voice.addTickables(notes4);

var formatter4 = new Vex.Flow.Formatter().joinVoices([stave4Voice]);
formatter4.format([stave4Voice], nStaveWidth);

var vibrato4 = new VF.VibratoBracket({
  start: notes4[1],
  stop: notes4[3],
});
vibrato4.setLine(2);

stave4Voice.draw(ctx, stave4);

vibrato4.setContext(ctx).draw();

const stave5 = new Stave(stave1.x, stave1.y + 200, nHeadMargin + nStaveWidth).setContext(ctx);
stave5.addClef("treble").setContext(ctx);
stave5.addTimeSignature('4/4').setContext(ctx);
stave5.setSection("C", 0);
stave5.setMeasure(5);
stave5.setEndBarType(VF.Barline.type.SINGLE);

stave5.draw();

var connector = new VF.StaveConnector(stave1, stave5);
connector.setType(VF.StaveConnector.type.SINGLE);
connector.setContext(ctx);
connector.draw();

const notes5 = [
  new StaveNote({ keys: ["a/4"], duration: "q" }),
  new StaveNote({ keys: ["b/4"], duration: "q" }),
  new StaveNote({ keys: ["c/5"], duration: "q" }),
  new StaveNote({ keys: ["d/5"], duration: "q" }),
];

var stave5Voice = new Vex.Flow.Voice({ num_beats: 4, beat_value: 4 });
stave5Voice.addTickables(notes5);

var formatter5 = new Vex.Flow.Formatter().joinVoices([stave5Voice]);
formatter5.format([stave5Voice], nStaveWidth);


var vibrato5 = new VF.VibratoBracket({
  start: notes5[3],
  stop: null,
});
vibrato5.setLine(2);
vibrato5.setHarsh(true);

stave5Voice.draw(ctx, stave5);

vibrato5.setContext(ctx).draw();

const tie3 = new StaveTie({
  first_note: notes5[1],
  last_note: notes5[2],
  first_indices: [0],
  last_indices: [0],
});

const tie4 = new StaveTie({
  first_note: notes5[2],
  last_note: notes5[3],
  first_indices: [0],
  last_indices: [0],
});

tie3.setContext(ctx).draw();
tie4.setContext(ctx).draw();

const stave6 = new Stave(stave5.width + stave5.x, stave5.y, nStaveWidth).setContext(ctx);
stave6.setEndBarType(VF.Barline.type.DOUBLE);
stave6.setMeasure(6);

stave6.draw();

const notes6 = [
  new StaveNote({ keys: ["e/5"], duration: "q", stem_direction: -1 }),
  new StaveNote({ keys: ["f/5"], duration: "q", stem_direction: -1 }),
  new StaveNote({ keys: ["g/5"], duration: "q", stem_direction: -1 }),
  new StaveNote({ keys: ["a/5"], duration: "q", stem_direction: -1 }),
];

Formatter.FormatAndDraw(ctx, stave6, notes6);

const tie5 = new StaveTie({
  first_note: notes5[3],
  last_note: notes6[0],
  first_indices: [0],
  last_indices: [0],
});

tie5.setContext(ctx).draw();


const stave7 = new Stave(stave6.width + stave6.x, stave5.y, nStaveWidth).setContext(ctx);
stave7.setMeasure(7);
stave7.draw();

const notes7 = [
  new StaveNote({ keys: ["a/4"], duration: "q" }),
  new StaveNote({ keys: ["b/4"], duration: "q" }),
  new StaveNote({ keys: ["c/5"], duration: "q" }),
  new StaveNote({ keys: ["d/5"], duration: "q" }),
];

var stave7Voice = new Vex.Flow.Voice({ num_beats: 4, beat_value: 4 });
stave7Voice.addTickables(notes7);

var formatter7 = new Vex.Flow.Formatter().joinVoices([stave7Voice]);
formatter7.format([stave7Voice], nStaveWidth);

var bracket7top = new VF.TextBracket({
  start: notes7[1],
  stop: notes7[3],
  text: "8",
  superscript: "va",
  position: 1
});
bracket7top.setLine(2);

var bracket7bottom = new VF.TextBracket({
  start: notes7[1],
  stop: notes7[3],
  text: "8",
  superscript: "vb",
  position: -1
});
bracket7bottom.setLine(4);
bracket7bottom.render_options.bracket_height = 40;
bracket7bottom.render_options.line_width = 2;
bracket7bottom.render_options.show_bracket = true;
bracket7bottom.setDashed(true, [2, 2]);
bracket7bottom.font.size = 15;
bracket7bottom.setDashed(false);
bracket7bottom.render_options.underline_superscript = false;
bracket7bottom.setFont({
  weight: "bold",
  family: "Arial",
  size: 15
});

stave7Voice.draw(ctx, stave7);

bracket7top.setContext(ctx).draw();
bracket7bottom.setContext(ctx).draw();

const stave8 = new Stave(stave7.width + stave7.x, stave5.y, nStaveWidth).setContext(ctx);
stave8.setMeasure(8);
stave8.draw();


const notes8 = [
  new StaveNote({ keys: ["g/4"], duration: "4s" }),
  new StaveNote({ keys: ["g/4"], duration: "4s" }),
  new StaveNote({ keys: ["g/4"], duration: "4s" }),
  new StaveNote({ keys: ["g/4"], duration: "4s" }),
];

var stave8Voice = new Vex.Flow.Voice({ num_beats: 4, beat_value: 4 });
stave8Voice.addTickables(notes8);

var formatter8 = new Vex.Flow.Formatter().joinVoices([stave8Voice]);
formatter8.format([stave8Voice], nStaveWidth);

stave8Voice.draw(ctx, stave8);

const stave9 = new Stave(stave5.x, stave5.y + 200, nHeadMargin + nStaveWidth).setContext(ctx);
stave9.setMeasure(9);
stave9.draw();

var connector9 = new VF.StaveConnector(stave5, stave9);
connector9.setType(VF.StaveConnector.type.SINGLE);
connector9.setContext(ctx);
connector9.draw();

var connector9_2 = new VF.StaveConnector(stave5, stave9);
connector9_2.setType(VF.StaveConnector.type.BRACKET);
connector9_2.setContext(ctx);
//connector9_2.setText('E.Guitar');
connector9_2.draw();

Instrument2.x = stave1.x - 30;
Instrument2.y = stave5.y + ((stave9.y - stave5.y) / 2) + 90; 


const stave10 = new Stave(stave9.width + stave9.x, stave9.y, nStaveWidth).setContext(ctx);
stave10.setMeasure(10);
stave10.draw();


const stave11 = new Stave(stave10.width + stave10.x, stave9.y, nStaveWidth).setContext(ctx);
stave11.setMeasure(11);
stave11.draw();


const stave12 = new Stave(stave11.width + stave11.x, stave9.y, nStaveWidth).setContext(ctx);
stave12.setMeasure(12);
stave12.draw();

})();

const svgElement2 = document.querySelector('#yonet202403Mid_Output01 svg');
svgElement2.style.backgroundColor = '#F5F5F5';

var svgContainer = document.getElementById('yonet202403Mid_Output01');

var svgElement = svgContainer.querySelector('svg');

var newText = document.createElementNS('http://www.w3.org/2000/svg', 'text');
newText.setAttribute('x', '100');
newText.setAttribute('y', '100');
newText.setAttribute('font-family', 'Hiragino Kaku Gothic Pro, メイリオ, MS Gothic, sans-serif');
newText.setAttribute('font-size', '50');
newText.setAttribute('fill', 'black');
newText.textContent = 'TestTitle - subTitle - lyrics: yo-net, music: yo-net';

svgElement.appendChild(newText);


var newText2 = document.createElementNS('http://www.w3.org/2000/svg', 'text');
newText2.setAttribute('x', Instrument1.x);
newText2.setAttribute('y', Instrument1.y);
newText2.setAttribute('font-family', 'Bravura, VexFlow, Arial, sans-serif');
newText2.setAttribute('font-size', '20pt');
newText2.setAttribute('fill', 'black');
newText2.textContent = 'Vocal';

var textGroup2 = document.createElementNS('http://www.w3.org/2000/svg', 'g');
textGroup2.setAttribute('transform', 'rotate(-90 ' + Instrument1.x + ' ' + Instrument1.y + ')');

textGroup2.appendChild(newText2);

svgElement.appendChild(textGroup2);

var newText3 = document.createElementNS('http://www.w3.org/2000/svg', 'text');
newText3.setAttribute('x', Instrument2.x);
newText3.setAttribute('y', Instrument2.y);
newText3.setAttribute('font-family', 'Bravura, VexFlow, Arial, sans-serif');
newText3.setAttribute('font-size', '20pt');
newText3.setAttribute('fill', 'black');
newText3.textContent = 'E.Guitar';

var textGroup3 = document.createElementNS('http://www.w3.org/2000/svg', 'g');
textGroup3.setAttribute('transform', 'rotate(-90 ' + Instrument2.x + ' ' + Instrument2.y + ')');

textGroup3.appendChild(newText3);

svgElement.appendChild(textGroup3);

///////////////////////////
//直線による描画の例
///////////////////////////
var crescendoX = 900; // X座標
var crescendoY = 290; // Y座標
var crescendoWidth = 200; // クレシェンドの幅
var crescendoHeight = 20; // クレシェンドの高さ

// 新しいグループ要素の作成
var newGroup = document.createElementNS('http://www.w3.org/2000/svg', 'g');
newGroup.setAttribute('transform', 'translate(0, 0)');

// クレシェンドの線のパスを作成
var path = document.createElementNS('http://www.w3.org/2000/svg', 'path');
var pathStr = 'M ' + crescendoX + ' ' + crescendoY +
    ' L ' + (crescendoX + crescendoWidth) + ' ' + (crescendoY - crescendoHeight / 2) +
    ' L ' + crescendoX + ' ' + (crescendoY - crescendoHeight);
path.setAttribute('d', pathStr);
path.setAttribute('stroke', 'black');
path.setAttribute('stroke-width', '1');
path.setAttribute('fill', 'none'); // パスを透明にする
newGroup.appendChild(path);

// グループ要素の追加
svgElement.appendChild(newGroup);

///////////////////////////
//Bravuraフォントのデクレシェンド記号
///////////////////////////
var crescendo4X = 1110; // X座標1110
var crescendo4Y = 295; // Y座標290
var crescendo4Width = 80; // クレシェンドの幅
var crescendo4Height = 100; // クレシェンドの幅

// クレシェンド記号のフォント設定
var fontSize4 = 50; // フォントサイズ
var fontFamily4 = "Bravura, Arial"; // Bravuraフォントファミリー
var textContent4 = "\uE53F"; // デクレシェンド記号

// テキスト要素の作成
var newText4 = document.createElementNS('http://www.w3.org/2000/svg', 'text');
newText4.setAttribute('id', 'crescendoText'); // テキスト要素にIDを付ける
newText4.setAttribute('x', 0);
newText4.setAttribute('y', 0);
newText4.setAttribute('font-family', fontFamily4);
newText4.setAttribute('font-size', fontSize4);
newText4.setAttribute('fill', 'black');
newText4.textContent = textContent4;

// SVG要素にテキストを追加
svgElement.appendChild(newText4);

requestAnimationFrame(function() {
    var textWidth = document.getElementById('crescendoText').getBBox().width;
    var textHeight = document.getElementById('crescendoText').getBBox().height;

    // クレシェンドの幅に応じて縦方向のスケーリング
    var horizontalScale = crescendo4Width / textWidth;
    var verticalScale = 1.2;//crescendo4Height / textHeight; // ここは実際に表示される大きさをみてから固定で設定するべき。なぜならグリフ毎に縦横比が違うので、一筋なわではいかないから。

    newText4.setAttribute('transform', 'translate(' + crescendo4X + ',' + crescendo4Y + ') scale(' + horizontalScale + ',' + verticalScale + ')');

    // クレシェンド記号をSVG要素に追加する
    svgElement.appendChild(newText4);
});

})();
</script>

　スラッシュノートはものすごく簡単で、durationの記号の後ろにsをつけるだけです。難しいことはないです。

　

VexFlow 使い方に戻る。