bluebey-studio: パン中にぶるべーが中心からずれる問題を修正

pointermoveごとに丸めていたため、細かい移動を重ねるほど中心とぶるべーの位置がずれていた。丸めはドラッグ終了時の一度だけにした。

1 files changed, 13 insertions, 4 deletions

diff --git a/public/bluebey-studio/src/main.js b/public/bluebey-studio/src/main.js
index bdf5697..9178427 100644
--- a/public/bluebey-studio/src/main.js
+++ b/public/bluebey-studio/src/main.js
@@ -2423,8 +2423,11 @@ async function init() {
         for (const controls of Object.values(view.controlsMap ?? {})) controls.target.add(move);
         for (const cam of Object.values(view.cameras ?? {})) cam.position.add(move);
         const root = state.pose.root ?? (state.pose.root = [0, 0, 0]);
-        root[0] = round2((root[0] ?? 0) + move.x);
-        root[2] = round2((root[2] ?? 0) + move.z);
+        // Keep full precision while accumulating: rounding every pointermove
+        // drifts the character away from the camera centre (and therefore from
+        // the orbit axis). Round once on pointer-up instead.
+        root[0] = (root[0] ?? 0) + move.x;
+        root[2] = (root[2] ?? 0) + move.z;
         view.captureInto(state.view);
       } else {
         // Shift+drag (or any touch drag on the character): slide the character,
@@ -2446,8 +2449,14 @@ async function init() {
       view.controls.enabled = true;
       stage.style.cursor = '';
       if (event) { try { canvas.releasePointerCapture(event.pointerId); } catch { /* ignore */ } }
-      if (wasPan) app.actions.syncPanel?.();
-      else capturePose();
+      if (wasPan) {
+        if (state.pose.root) {
+          state.pose.root = state.pose.root.map((value) => Math.round((value ?? 0) * 1000) / 1000);
+        }
+        app.actions.syncPanel?.();
+      } else {
+        capturePose();
+      }
       app.panel?.onRigChanged?.();
       app.needsRender = true;
     };