child centroid and discover auto face detection expansion

crashable v1

.idea/deviceManager.xml

@@ -1,28 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="DeviceTable">
-    <option name="collapsedNodes">
-      <list>
-        <CategoryListState>
-          <option name="categories">
-            <list>
-              <CategoryState>
-                <option name="attribute" value="Type" />
-                <option name="value" value="Virtual" />
-              </CategoryState>
-              <CategoryState>
-                <option name="attribute" value="Type" />
-                <option name="value" value="Virtual" />
-              </CategoryState>
-              <CategoryState>
-                <option name="attribute" value="Type" />
-                <option name="value" value="Virtual" />
-              </CategoryState>
-            </list>
-          </option>
-        </CategoryListState>
-      </list>
-    </option>
     <option name="columnSorters">
       <list>
         <ColumnSorterState>
@@ -38,6 +16,13 @@
         <option value="Type" />
         <option value="Type" />
         <option value="Type" />
+        <option value="Type" />
+        <option value="Type" />
+        <option value="Type" />
+        <option value="Type" />
+        <option value="Type" />
+        <option value="Type" />
+        <option value="Type" />
       </list>
     </option>
   </component>