Adicionou botão Sair AR

X-Lovable-Edit-ID: edt-f602c6ac-5eb0-4c32-9ea0-9d1b4f559559
Co-authored-by: Reifonas <211114984+Reifonas@users.noreply.github.com>

src/components/three/XRHudInWorld.tsx

@@ -1,6 +1,7 @@
 import { useRef, useState, forwardRef } from 'react';
 import { useFrame, useThree } from '@react-three/fiber';
-import { useXRInputSourceState } from '@react-three/xr';
+import { useXRInputSourceState, useXR } from '@react-three/xr';
+import { useNavigate } from 'react-router-dom';
 import * as THREE from 'three';
 import { Text } from '@react-three/drei';
 import { XR3DButton, XR3DPanel } from './XRPanel3D';
@@ -56,7 +57,11 @@ export function XRHudInWorld(props: XRHudInWorldProps) {
   const { camera } = useThree();
   const leftCtrl = useXRInputSourceState('controller', 'left');
   const rightCtrl = useXRInputSourceState('controller', 'right');
+  const xrSession = useXR((s) => s.session);
+  const navigate = useNavigate();
   const [open, setOpen] = useState(true);
+  /** Visibility of the small head-locked floating button group (toggled by X button). */
+  const [hudVisible, setHudVisible] = useState(true);
   const [tab, setTab] = useState<Tab>('scene');
   /** When pinned, the panel stays fixed in world space and does NOT follow the head. */
   const [pinned, setPinned] = useState(true);
@@ -77,12 +82,12 @@ export function XRHudInWorld(props: XRHudInWorldProps) {
   const dragInitialized = useRef(false);
 
   useFrame(() => {
-    // Toggle via left A button (Quest Touch buttons[4])
+    // Toggle the head-locked 3-button group via left X button (Quest Touch buttons[4])
     const gp = leftCtrl?.inputSource?.gamepad;
     if (gp) {
-      const aBtn = gp.buttons[4];
+      const xBtn = gp.buttons[4];
-      const pressed = !!aBtn?.pressed;
+      const pressed = !!xBtn?.pressed;
-      if (pressed && !lastABtn.current) setOpen((v) => !v);
+      if (pressed && !lastABtn.current) setHudVisible((v) => !v);
       lastABtn.current = pressed;
     }
 
@@ -166,15 +171,25 @@ export function XRHudInWorld(props: XRHudInWorldProps) {
   return (
     <>
       <WristToggle ref={wristRef} open={open} onToggle={() => setOpen((v) => !v)} />
-      {/* Head-locked fallback: always-visible quick controls in lower-left of FOV */}
+      {/* Head-locked fallback: floating quick-controls in lower-left of FOV.
-      <group ref={headLockRef} renderOrder={999}>
+          Toggled on/off by the left controller X button. */}
-        <XR3DButton position={[0, 0.018, 0]} size={[0.07, 0.022]}
+      <group ref={headLockRef} renderOrder={999} visible={hudVisible}>
+        <XR3DButton position={[0, 0.030, 0]} size={[0.07, 0.022]}
           label={open ? '✕ Menu' : '☰ Menu'} active={open}
           onClick={() => { setOpen((v) => !v); reanchorRequested.current = true; }}
           fontSize={0.0085} />
-        <XR3DButton position={[0, -0.008, 0]} size={[0.07, 0.022]}
+        <XR3DButton position={[0, 0.004, 0]} size={[0.07, 0.022]}
           label={showGrid ? 'Grid ON' : 'Grid OFF'} active={showGrid}
           onClick={() => setShowGrid(!showGrid)} fontSize={0.0085} />
+        <XR3DButton position={[0, -0.022, 0]} size={[0.07, 0.022]}
+          label="⏏ Sair AR"
+          onClick={() => {
+            // End the XR session while preserving placement/state in the store,
+            // then return to the Viewer. Re-entering AR restores the same state.
+            try { xrSession?.end(); } catch (e) { console.warn('[XR] session.end failed', e); }
+            setTimeout(() => navigate('/viewer'), 50);
+          }}
+          fontSize={0.0085} />
         <RecIndicator />
       </group>
       {open && (