Changes

Co-authored-by: Reifonas <211114984+Reifonas@users.noreply.github.com>

src/components/ViewerControls.tsx

@@ -31,8 +31,40 @@ export function ViewerControls() {
     edgeThresholdAngle, setEdgeThresholdAngle,
     positionMode, setPositionMode,
     activeModelId, models,
+    selectionMode, setSelectionMode,
+    selectedElementKeys, hiddenElementKeys, isolatedElementKeys,
+    hideSelectedElements, isolateSelectedElements, showAllElements, clearElementSelection,
   } = useModelStore();
   const activeModel = models.find(m => m.id === activeModelId);
+  const hasSelection = selectedElementKeys.size > 0;
+  const hasHiddenOrIsolated = hiddenElementKeys.size > 0 || isolatedElementKeys !== null;
+
+  const handleExportSelection = useCallback(async () => {
+    if (!activeModel || selectedElementKeys.size === 0) return;
+    const canvas = document.querySelector('canvas') as HTMLCanvasElement | null;
+    if (!canvas) { toast.error('Canvas não encontrado'); return; }
+    // Walk the global scene to find selected element nodes
+    const scene = (canvas as unknown as { __r3f?: { fiber?: { scene?: THREE.Scene } } }).__r3f?.fiber?.scene
+      ?? (window as unknown as { __r3fScene?: THREE.Scene }).__r3fScene;
+    // Fallback: scan via DOM-attached three scene exposed by drei? Use traversal of stored models — use document approach
+    const objects: THREE.Object3D[] = [];
+    const collect = (root: THREE.Object3D) => {
+      const modelId = root.userData?.modelId as string | undefined;
+      if (!modelId) { root.children.forEach(collect); return; }
+      root.traverse((el) => {
+        if (!el.userData?.ifcElement) return;
+        if (selectedElementKeys.has(elementKey(modelId, el))) objects.push(el);
+      });
+    };
+    if (scene) collect(scene);
+    if (objects.length === 0) {
+      toast.error('Não foi possível localizar elementos selecionados. Use IFC para seleção persistente.');
+      return;
+    }
+    const base = activeModel.fileName.replace(/\.(glb|gltf|ifc|obj|stl)$/i, '');
+    await exportObjectsAsGLB(objects, `${base}_selecao_${objects.length}elem.glb`);
+    toast.success(`GLB exportado com ${objects.length} elemento(s)`);
+  }, [activeModel, selectedElementKeys]);
 
   const handleScreenshot = useCallback(() => {
     const canvas = document.querySelector('canvas');