From d0991c5ddb8d4be1e72f2e99059699e76a87253e Mon Sep 17 00:00:00 2001
From: Zhe Fang <founchoo@outlook.com>
Date: Wed, 17 Dec 2025 20:22:26 -0500
Subject: [PATCH] fix: 3d lyrics effect incorrect y center

---
 .../BetterLyrics.WinUI3/Controls/LyricsCanvas.xaml.cs       | 3 ++-
 .../BetterLyrics.WinUI3/Renderer/LyricsRenderer.cs          | 6 ++++--
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/BetterLyrics.WinUI3/BetterLyrics.WinUI3/Controls/LyricsCanvas.xaml.cs b/BetterLyrics.WinUI3/BetterLyrics.WinUI3/Controls/LyricsCanvas.xaml.cs
index 9486a04..24d6d21 100644
--- a/BetterLyrics.WinUI3/BetterLyrics.WinUI3/Controls/LyricsCanvas.xaml.cs
+++ b/BetterLyrics.WinUI3/BetterLyrics.WinUI3/Controls/LyricsCanvas.xaml.cs
@@ -548,11 +548,12 @@ namespace BetterLyrics.WinUI3.Controls
             _isMouseScrollingChanged = false;
 
             _lyricsRenderer.CalculateLyrics3DMatrix(
+                lyricsStyle: lyricsStyle,
                 lyricsEffect: lyricsEffect,
                 lyricsX: _renderLyricsStartX,
                 lyricsY: _renderLyricsStartY,
                 lyricsWidth: _renderLyricsWidth,
-                canvasHeight: sender.Size.Height
+                lyricsHeight: _renderLyricsHeight
             );
 
             _isLayoutChanged = false;
diff --git a/BetterLyrics.WinUI3/BetterLyrics.WinUI3/Renderer/LyricsRenderer.cs b/BetterLyrics.WinUI3/BetterLyrics.WinUI3/Renderer/LyricsRenderer.cs
index cd771ab..d6cd827 100644
--- a/BetterLyrics.WinUI3/BetterLyrics.WinUI3/Renderer/LyricsRenderer.cs
+++ b/BetterLyrics.WinUI3/BetterLyrics.WinUI3/Renderer/LyricsRenderer.cs
@@ -233,13 +233,15 @@ namespace BetterLyrics.WinUI3.Renderer
             catch (Exception) { }
         }
 
-        public void CalculateLyrics3DMatrix(LyricsEffectSettings lyricsEffect, double lyricsX, double lyricsY, double lyricsWidth, double canvasHeight)
+        public void CalculateLyrics3DMatrix(LyricsStyleSettings lyricsStyle, LyricsEffectSettings lyricsEffect, double lyricsX, double lyricsY, double lyricsWidth, double lyricsHeight)
         {
             if (!lyricsEffect.Is3DLyricsEnabled) return;
 
+            var playingLineTopOffsetFactor = lyricsStyle.PlayingLineTopOffset / 100.0;
+
             Vector3 center = new(
                 (float)(lyricsX + lyricsWidth / 2),
-                (float)(lyricsY + canvasHeight / 2),
+                (float)(lyricsY + lyricsHeight * playingLineTopOffsetFactor / 2),
                 0);
 
             float rotationX = (float)(Math.PI * lyricsEffect.Lyrics3DXAngle / 180.0);