From b02772f108fc9cf5271b9625ec89ec89323fe7b5 Mon Sep 17 00:00:00 2001
From: Yasutake Yohei <61961825+yasutakeyohei@users.noreply.github.com>
Date: Tue, 6 Oct 2026 14:08:46 +0900
Subject: bluebey-studio:
 縦書き句読点の上下を戻し、閉じた口の舌が鼻に隠れないように
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縦書きの句読点は右 +0.55em はそのまま、上方向は -0.55em に戻した（-0.8 だと上の文字に重なる）。閉じた口で舌が上を向くときは、口プレートを深度テストなしにして、3Dの鼻に隠れず舌が出るようにした（舌が無いときは従来どおり鼻や腕が隠す）。
---
 public/bluebey-studio/src/face.js | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'public/bluebey-studio/src/face.js')

diff --git a/public/bluebey-studio/src/face.js b/public/bluebey-studio/src/face.js
index 7de7c8d..cec7619 100644
--- a/public/bluebey-studio/src/face.js
+++ b/public/bluebey-studio/src/face.js
@@ -214,6 +214,16 @@ export class Face {
     // Hiding the mouth has to hide the plane itself, not just stop drawing on
     // it - otherwise the last drawing stays on screen.
     this.setMouthVisible(p.mouth.visible !== false);
+    // A tongue poking over a *closed* lip can reach up behind the 3D nose, which
+    // would hide it. In that one case let the mouth artwork win the depth test,
+    // so the tongue reads; otherwise the nose (and an arm) still hide the mouth
+    // the way they should. The lip line and the rest of the mouth sit clear of
+    // the nose, so only the tongue can overlap it.
+    const mouth = p.mouth ?? {};
+    const tongueOverLip = (mouth.round ?? 0) <= 0.004
+      && (mouth.open ?? 0) <= 0.004
+      && (mouth.tongue ?? 1) > 0.01;
+    this.mouthMesh.material.depthTest = !tongueOverLip;
     const mode = this.styleMode === 'line' ? 'line' : 'paint';
 
     if (this.eyeSource === 'parametric') {
-- 
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