Adds support for percussion instruments with 1,2 or 3 lines

src.csharp/AlphaTab/Core/Globals.cs

@@ -4,6 +4,7 @@ namespace AlphaTab.Core
 {
     public static class Globals
     {
+        public const double NaN = double.NaN;
         public static Console Console { get; } = new Console();
 
         public static double ParseInt(string s)

src.csharp/AlphaTab/Platform/CSharp/GdiCanvas.cs

@@ -1,4 +1,5 @@
-using AlphaTab.Rendering.Glyphs;
+using AlphaTab.Model;
+using AlphaTab.Rendering.Glyphs;
 using System;
 using System.Collections.Generic;
 using System.Drawing;

src/Environment.ts

@@ -40,7 +40,7 @@ import { TripletFeelEffectInfo } from '@src/rendering/effects/TripletFeelEffectI
 import { WhammyBarEffectInfo } from '@src/rendering/effects/WhammyBarEffectInfo';
 import { WideBeatVibratoEffectInfo } from '@src/rendering/effects/WideBeatVibratoEffectInfo';
 import { WideNoteVibratoEffectInfo } from '@src/rendering/effects/WideNoteVibratoEffectInfo';
-import { MusicFontSymbol } from '@src/rendering/glyphs/MusicFontSymbol';
+import { MusicFontSymbol } from '@src/model/MusicFontSymbol';
 import { EffectBarRendererInfo } from '@src/rendering/EffectBarRendererInfo';
 import { IScoreRenderer } from '@src/rendering/IScoreRenderer';
 import { HorizontalScreenLayout } from '@src/rendering/layout/HorizontalScreenLayout';
@@ -85,6 +85,10 @@ export class RenderEngineFactory {
  * @partial
  */
 export class Environment {
+    /**
+     * The font size of the music font in pixel. 
+     */
+    public static readonly MusicFontSize = 34;
     /**
      * @target web
      */
@@ -125,7 +129,7 @@ export class Environment {
                  line-height: 1;
                  -webkit-font-smoothing: antialiased;
                  -moz-osx-font-smoothing: grayscale;
-                 font-size: 34px;
+                 font-size: ${Environment.MusicFontSize}px;
                  overflow: visible !important;
             }`;
 
@@ -175,7 +179,7 @@ export class Environment {
      */
     public static bravuraFontChecker: FontLoadingChecker = new FontLoadingChecker(
         'alphaTab',
-        `&#${MusicFontSymbol.ClefG};`
+        `&#${MusicFontSymbol.GClef};`
     );
 
     /**

src/alphatab.ts

@@ -181,11 +181,13 @@ import { Fingers } from '@src/model/Fingers';
 import { FontStyle, Font } from '@src/model/Font';
 import { GraceType } from '@src/model/GraceType';
 import { HarmonicType } from '@src/model/HarmonicType';
+import { InstrumentArticulation } from '@src/model/InstrumentArticulation';
 import { JsonConverter } from '@src/model/JsonConverter';
 import { KeySignature } from '@src/model/KeySignature';
 import { KeySignatureType } from '@src/model/KeySignatureType';
 import { Lyrics } from '@src/model/Lyrics';
 import { MasterBar } from '@src/model/MasterBar';
+import { MusicFontSymbol } from '@src/model/MusicFontSymbol';
 import { Note } from '@src/model/Note';
 import { NoteAccidentalMode } from '@src/model/NoteAccidentalMode';
 import { Ottavia } from '@src/model/Ottavia';
@@ -231,11 +233,13 @@ export const model = {
     Font,
     GraceType,
     HarmonicType,
+    InstrumentArticulation,
     JsonConverter,
     KeySignature,
     KeySignatureType,
     Lyrics,
     MasterBar,
+    MusicFontSymbol,
     Note,
     NoteAccidentalMode,
     Ottavia,

src/importer/Gp3To5Importer.ts

@@ -879,6 +879,12 @@ export class Gp3To5Importer extends ScoreImporter {
         if ((flags & 0x08) !== 0) {
             this.readNoteEffects(track, voice, beat, newNote);
         }
+
+        if(bar.staff.isPercussion) {
+            newNote.percussionArticulation = newNote.fret;
+            newNote.string = -1;
+            newNote.fret = -1;
+        }
         return newNote;
     }