Add improvements for joints editing with debug shapes

Source/Engine/Physics/Joints/D6Joint.h

@@ -161,7 +161,7 @@ public:
 
 /// <summary>
 /// Physics joint that is the most customizable type of joint. This joint type can be used to create all other built-in joint 
-/// types, and to design your own custom ones, but is less intuitive to use.Allows a specification of a linear 
+/// types, and to design your own custom ones, but is less intuitive to use. Allows a specification of a linear 
 /// constraint (for example for a slider), twist constraint (rotating around X) and swing constraint (rotating around Y and Z). 
 /// It also allows you to constrain limits to only specific axes or completely lock specific axes.
 /// </summary>
@@ -325,6 +325,9 @@ public:
 public:
 
     // [Joint]
+#if USE_EDITOR
+    void OnDebugDrawSelected() override;
+#endif
     void Serialize(SerializeStream& stream, const void* otherObj) override;
     void Deserialize(DeserializeStream& stream, ISerializeModifier* modifier) override;