On shape to specifications adequacy

Computer aided design now aims to provide designers with a support during the early stages of design. The purpose is to translate the client´s specifications into a shape as automatically as possible. However, the processing of a text in natural language is still out of reach. We then assume that the client´s specifications are manually translated into intermediate specifications composed of intermediate constraints upon physical parameters. Our efforts concern the transformation of these intermediate specifications into a shape, precisely the way to complete whether a shape satisfies the intermediate specifications or not. We first study the case in which the shape is a single primitive solid; we also give elements to choose the instance that best fits the specifications. Then, we study the extension of the method to solids defined by a combination of primitive solids