14. The system of claim 10 , wherein the similarity engine further comprises a retrieval structure generator to construct a retrieval structure using each of the one or more 3D models for each feature associated with the one or more 3D models.
14. The system of claim 10 , wherein the similarity engine further comprises a retrieval structure generator to construct a retrieval structure using each of the one or more 3D models for each feature associated with the one or more 3D models. 15. The system of claim 14 , further comprising a searching engine to search the retrieval structure, for each feature, to determine 3D models similar to the query 3D model.