public/bluebey-studio: ダリひげを左右半分の画像にして間隔を調整可能に

hige-2-right（ぶるべーから見て右側のダリ髭）を取り込み、左右それぞれに描いて「左右の間隔」で開きを調整できるようにした。ファイル名が -right.png のものは片側（ミラーして2枚描く）として扱う。

全幅だった kaiser.png は kaiser-right.png に置き換えた。

2 files changed, 35 insertions, 11 deletions

diff --git a/public/bluebey-studio/src/faceArt.js b/public/bluebey-studio/src/faceArt.js
index 2e1572a..38df333 100644
--- a/public/bluebey-studio/src/faceArt.js
+++ b/public/bluebey-studio/src/faceArt.js
@@ -888,13 +888,29 @@ function drawBeard(ctx, spec, lineOnly = false, textures = null) {
   // A supplied drawing for this kind (assets/beards/<shape>.png) replaces the
   // built-in strokes. The drawings are trimmed to their ink, so `w` is the
   // beard's real width; it is centred on the nose and scaled by `size`.
-  const texture = textures?.[shape];
-  if (texture && texture.width) {
+  const entry = textures?.[shape];
+  if (entry?.image) {
+    const { image, half } = entry;
     // Slightly wider than the built-in base: a moustache drawn to the same width
     // as a beard's stroke sat mostly behind the nose.
     const drawW = w * 1.4;
-    const dh = (drawW * (texture.height || 1)) / (texture.width || 1);
-    ctx.drawImage(texture, cx - drawW / 2, cy - dh / 2, drawW, dh);
+    if (half) {
+      // One side, mirrored to make the pair. The drawing is the model's own right
+      // side, which sits in the artwork's left half; `spacing` opens the middle.
+      const halfW = drawW / 2;
+      const dh = (halfW * (image.height || 1)) / (image.width || 1);
+      const gap = clamp(spec.spacing ?? 0, 0, 800);
+      const y = cy - dh / 2;
+      ctx.drawImage(image, cx - gap - halfW, y, halfW, dh);
+      ctx.save();
+      ctx.translate(cx + gap, cy);
+      ctx.scale(-1, 1);
+      ctx.drawImage(image, 0, -dh / 2, halfW, dh);
+      ctx.restore();
+      return;
+    }
+    const dh = (drawW * (image.height || 1)) / (image.width || 1);
+    ctx.drawImage(image, cx - drawW / 2, cy - dh / 2, drawW, dh);
     return;
   }
 
diff --git a/public/bluebey-studio/src/main.js b/public/bluebey-studio/src/main.js
index f90dfc8..9514ca4 100644
--- a/public/bluebey-studio/src/main.js
+++ b/public/bluebey-studio/src/main.js
@@ -393,17 +393,25 @@ async function init() {
   // one is drawn from the file instead of the built-in strokes. A missing file is
   // skipped, so the app works before any are added.
   void (async () => {
-    // Only the kinds that actually ship a drawing. Add a name here when its file is
-    // added to assets/beards/, so no 404s are logged for the ones without one.
-    const kinds = ['scotch', 'kaiser', 'apron'];
+    // Each entry: a beard kind and the drawing in `assets/beards/`. A file ending
+    // `-right.png` is one side of a moustache; it is drawn twice (mirrored) with a
+    // `spacing` gap between them. A kind with no entry uses the built-in strokes.
+    const files = [
+      { kind: 'scotch', file: 'scotch.png' },
+      { kind: 'kaiser', file: 'kaiser-right.png' },
+      { kind: 'apron', file: 'apron.png' },
+    ];
     const loaded = {};
-    await Promise.all(kinds.map(async (kind) => {
+    await Promise.all(files.map(async ({ kind, file }) => {
       try {
-        const response = await fetch(assetUrl(`${kind}.png`, 'beard'));
+        const response = await fetch(assetUrl(file, 'beard'));
         if (!response.ok) return;
-        loaded[kind] = await createImageBitmap(await response.blob());
+        loaded[kind] = {
+          image: await createImageBitmap(await response.blob()),
+          half: file.endsWith('-right.png'),
+        };
       } catch {
-        /* no drawing for this kind: the built-in one is used */
+        /* a missing drawing falls back to the built-in strokes */
       }
     }));
     if (Object.keys(loaded).length) {