This paper explains the parameters and methodology at the heart of an ongoing research project that seeks to verify whether one can trace back the genesis of any given artefact or work of art by means of computer-aided modelling. In its endeavour our research team Computer Assisted Design Research Group (GRCAO) aims to initiate and propose novel methods of modelling design processes. This approach is exemplified by a case study dealing with rose tracery designs adorning Gothic cathedrals of 12th and 13th Century “Žle-de-France”. A computerized model reenacting their design process was developed along with an interface enabling the translation of the designer’s intentions into a virtual design space. The stated goal of this research project is to evaluate empirically to what extent our modelling strategies can grasp a given artefact as a logical and articulate ensemble. Furthermore, we seek eventually to determine whether this kind of software programme would prove an adequate tool in the development of the architectural designer’s cognitive abilities.