Category: Constraint UI
Journal: Software - Practice and Experience
Abstract: A constraint-based graphics system provides a
        flexible, intuitive framework for describing
        relationships among graphical objects in applications
        such as document preparation, fount design and solid
        modelling. This paper describes two constraint-based
        graphics systems, microCOSM and the IDEAL
        Synthesizer, and their implementation in terms of
        attribute grammars. Experiences with attribute
        grammars suggest that they provide a powerful
        framework for representing constraints and extracting
        important semantic information such as the equations
        to be solved by the constraint solver. The authors
        discuss the advantages of using attribute grammars in
        constraint-based graphics and from their experiences
        make several observations about the way attribute
        grammars should be used. 
Number: 4
Bibtype: Article
Author: Lee Alton Barford
        Bradley T. Vander Zanden
Pages: 309-328
Month: apr
Title: Attribute Grammars in Constraint-based Graphics Systems
Year: 1989
Volume: 19
Keyword: microCOSM, IDEAL synthesizer, attribute grammar,
        constraint, user interface, graphics systems