AlphaTab.Rendering.ScoreBarRenderer.CreateKeySignatureGlyphs C# (CSharp) Method

        private void CreateKeySignatureGlyphs()
        {
            int offsetClef = 0;
            int currentKey = Bar.MasterBar.KeySignature;
            int previousKey = Bar.PreviousBar == null ? 0 : Bar.PreviousBar.MasterBar.KeySignature;

            switch (Bar.Clef)
            {
                case Clef.Neutral:
                    offsetClef = 0;
                    break;
                case Clef.G2:
                    offsetClef = 1;
                    break;
                case Clef.F4:
                    offsetClef = 2;
                    break;
                case Clef.C3:
                    offsetClef = -1;
                    break;
                case Clef.C4:
                    offsetClef = 1;
                    break;
            }

            // naturalize previous key
            // TODO: only naturalize the symbols needed
            var naturalizeSymbols = Math.Abs(previousKey);
            var previousKeyPositions = ModelUtils.KeySignatureIsSharp(previousKey) ? SharpKsSteps : FlatKsSteps;

            for (var i = 0; i < naturalizeSymbols; i++)
            {
                AddPreBeatGlyph(new NaturalizeGlyph(0, GetScoreY(previousKeyPositions[i] + offsetClef)));
            }

            // how many symbols do we need to get from a C-keysignature
            // to the new one
            //var offsetSymbols = (currentKey <= 7) ? currentKey : currentKey - 7;
            // a sharp keysignature
            if (ModelUtils.KeySignatureIsSharp(currentKey))
            {
                for (var i = 0; i < Math.Abs(currentKey); i++)
                {
                    AddPreBeatGlyph(new SharpGlyph(0, GetScoreY(SharpKsSteps[i] + offsetClef)));
                }
            }
            // a flat signature
            else
            {
                for (var i = 0; i < Math.Abs(currentKey); i++)
                {
                    AddPreBeatGlyph(new FlatGlyph(0, GetScoreY(FlatKsSteps[i] + offsetClef)));
                }
            }
        }