ovis: implement removeEntity method

modules/ovis/include/opencv2/ovis.hpp

@@ -70,6 +70,12 @@ public:
     CV_WRAP virtual void createEntity(const String& name, const String& meshname,
                                       InputArray tvec = noArray(), InputArray rot = noArray()) = 0;
 
+    /**
+     * remove an entity from the scene
+     * @param name entity name
+     */
+    CV_WRAP virtual void removeEntity(const String& name) = 0;
+
     /**
      * convenience method to visualize a camera position
      *

modules/ovis/src/ovis.cpp

@@ -342,6 +342,13 @@ public:
         node->attachObject(ent);
     }
 
+    void removeEntity(const String& name) {
+        SceneNode* node = _getSceneNode(sceneMgr, name);
+        node->getAttachedObject(name)->detachFromParent();
+        sceneMgr->destroyEntity(name);
+        sceneMgr->destroySceneNode(node);
+    }
+
     Rect2d createCameraEntity(const String& name, InputArray K, const Size& imsize, float zFar,
                               InputArray tvec, InputArray rot)
     {