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fix: fan style lyrics animation

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Zhe Fang
2025-12-13 15:45:41 -05:00
parent 132c5267b0
commit 816f7064db
1 changed files with 7 additions and 3 deletions
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10
BetterLyrics.WinUI3/BetterLyrics.WinUI3/Renderer/LyricsRenderer.cs
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@@ -135,7 +135,8 @@ namespace BetterLyrics.WinUI3.Renderer
var effectSettings = windowStatus.LyricsEffectSettings;
var styleSettings = windowStatus.LyricsStyleSettings;
var rotationY = currentPlayingLine.OriginalPosition.WithX(effectSettings.FanLyricsAngle < 0 ? (float)lyricsWidth : 0);
var rotationX = effectSettings.FanLyricsAngle < 0 ? lyricsWidth : 0;
rotationX += lyricsWidth / 2 * (effectSettings.FanLyricsAngle < 0 ? 1 : -1);
for (int i = startVisibleIndex; i <= endVisibleIndex; i++)
{
@@ -145,12 +146,15 @@ namespace BetterLyrics.WinUI3.Renderer
if (line.OriginalCanvasTextLayout == null) continue;
if (line.OriginalCanvasTextLayout.LayoutBounds.Width <= 0) continue;
var rotationY = line.CenterPosition.Y;
double xOffset = lyricsX + Math.Abs(line.AngleTransition.Value) / (Math.PI / 2) * lyricsWidth / 2 * (effectSettings.FanLyricsAngle < 0 ? 1 : -1);
double yOffset = line.YOffsetTransition.Value + userScrollOffset + lyricsY + lyricsHeight * playingLineTopOffsetFactor;
var transform =
Matrix3x2.CreateScale((float)line.ScaleTransition.Value, line.CenterPosition) *
Matrix3x2.CreateRotation((float)line.AngleTransition.Value, rotationY) *
Matrix3x2.CreateTranslation((float)lyricsX, (float)yOffset);
Matrix3x2.CreateRotation((float)line.AngleTransition.Value, new Vector2((float)rotationX, rotationY)) *
Matrix3x2.CreateTranslation((float)xOffset, (float)yOffset);
ds.Transform = transform;