objects locking system

src/lib/MeshUtils.js

@@ -55,16 +55,24 @@ function autoScale(object, mk = 1) {
     object.scale.multiplyScalar(mk / k);
 }
 
+function wrapInGroup(object){
+    if (object.isWrapper) return object;
+    let group = new Group();
+    group.userData.bbox = getBoundingBox(object);
+    group.add(object);
+    group.userData.object = object;
+    group.isWrapper = true;
+    return group;
+}
+
 function centerOrigin(object){
-    let result = new Group();
-    result.userData.bbox = getBoundingBox(object);
-    let position = getBoundingBoxCenterPoint(result.userData.bbox, object.position).negate();
+    let group = wrapInGroup(object);
+    let position = getBoundingBoxCenterPoint(group.userData.bbox, object.position).negate();
     object.position.copy(position)
-    result.add(object);
-    return result;
+    return group;
 }
 
 export { 
-    assignParams, assignMaterial, autoScale, centerOrigin,
+    assignParams, assignMaterial, autoScale, centerOrigin, wrapInGroup,
     getBoundingBox, getBoundingBoxSize, getBoundingBoxMaxLength, getBoundingBoxCenterPoint 
 }