bluebey-studio: ゴル眉画像を再反映し、まえがみに凹と中央の針を追加

更新された右側の眉画像を gol-right.png に反映。まえがみはほっぺ側への凹みを強め、頭の中心に針のような下向きの尖りを追加した。

2 files changed, 13 insertions, 5 deletions

diff --git a/public/bluebey-studio/assets/brows/gol-right.png b/public/bluebey-studio/assets/brows/gol-right.png
index c81e2b6..73086a8 100644
--- a/public/bluebey-studio/assets/brows/gol-right.png
+++ b/public/bluebey-studio/assets/brows/gol-right.png
diff --git a/public/bluebey-studio/src/faceArt.js b/public/bluebey-studio/src/faceArt.js
index ca23b74..5ed821d 100644
--- a/public/bluebey-studio/src/faceArt.js
+++ b/public/bluebey-studio/src/faceArt.js
@@ -847,8 +847,12 @@ function drawHeadCover(ctx, spec, limits) {
   const halfSpan = width / 2;
   const boundary = (x) => {
     const t = clamp((x - cx) / halfSpan, -1, 1);
-    // まえがみ: swept down towards the cheeks, raised in the middle.
-    if (shape === 'fringe') return base - 175 * (1 - t * t);
+    // まえがみ: falls towards the cheeks with a needle pulled down at the centre.
+    if (shape === 'fringe') {
+      const sweep = 420 * t * t;
+      const needle = 500 * Math.max(0, 1 - Math.abs(t) * 6);
+      return base - 100 + sweep + needle;
+    }
     // はちわれ: the same V upside down - a widow's peak.
     if (shape === 'fringe-up') return base - 320 * Math.max(0, 1 - Math.abs(t) * 1.5);
     // カーブ: a plain shallow curve, higher (more hair) round the sides.
@@ -934,9 +938,13 @@ export function drawHeadCoverWrap(ctx, spec, layout) {
   const cx = layout.offsetX + span * 0.5 + clamp(spec.offsetX ?? 0, -600, 600);
   const vBound = (x) => {
     const t = clamp((x - cx) / half, -1, 1);
-    // まえがみ: swept down towards the cheeks, raised in the middle - the
-    // opposite curvature to a central point (concave towards the cheeks).
-    if (shape === 'fringe') return base + 0.22 * t * t;
+    // まえがみ: the hair falls towards the cheeks on both sides (a strong
+    // concave sweep) with a narrow needle pulled down at the centre of the head.
+    if (shape === 'fringe') {
+      const sweep = 0.30 * t * t;
+      const needle = 0.42 * Math.max(0, 1 - Math.abs(t) * 6);
+      return base + sweep + needle;
+    }
     // はちわれ: the same V upside down - a widow's peak.
     if (shape === 'fringe-up') return base - 0.18 * Math.max(0, 1 - Math.abs(t) * 1.5);
     // カーブ: a deep round cover - low at the sides, high in the middle, like the