In Proceedings of CD-ROM Proceedings of the 1998 ASME Design Engineering Technical Conferences
Declarative user-defined feature classes
Designing mechanical parts using a feature vocabulary is a very effective and rich paradigm. Its expressive power, however, is severely limited if the set of feature types available in a feature library is fixed. It is, therefore, desirable to be able to extend and configure a feature library according to particular requirements, either of an end-user of a CAD system or of an application area. These requirements are not limited to topologic and parametric aspects of a generic feature definition, but include also validity conditions to be verified for each feature instance in a model. This paper proposes a new declarative scheme for the definition of feature classes . This scheme provides a unified description of the shape and validity issues of a feature class, as well as a flexible configuration of the feature class interface. In the definition process, the various constraint classes available play a central role, whereas an inheritance mechanism structures the feature library hierarchy. At the end of the process, validation of the class is performed, in order to avoid over- and underconstrained specifications. A graphical user interface supports the whole feature class definition process. Once defined, a feature class is automatically made available for use in a feature library of the modeling system.
More Information
Gallery
Citation
BibTex
@inproceedings{bib:bidarra:1998,
author = { Bidarra, Rafael and Idri, A. and Noort, Alex and Bronsvoort, Willem F. },
title = { Declarative user-defined feature classes },
booktitle = { In Proceedings of CD-ROM Proceedings of the 1998 ASME Design Engineering Technical Conferences },
year = { 1998 },
publisher = { ASME, NY },
address = { Atlanta, GA },
url = { https://publications.graphics.tudelft.nl/papers/771 },
}