Accession Number : ADA292165

Title :   A Differential Approach to Graphical Interaction.

Descriptive Note : Doctoral thesis,

Corporate Author : CARNEGIE-MELLON UNIV PITTSBURGH PA DEPT OF COMPUTER SCIENCE

Personal Author(s) : Gleicher, Michael L.

PDF Url : ADA292165

Report Date : 18 NOV 1994

Pagination or Media Count : 264

Abstract : Direct manipulation has become the preferred interface for controlling graphical objects. Despite its success, the ad hoc manner with which such interfaces have been designed and implemented restricts the types of interactive controls. This dissertation presents a new approach that provides a systematic method for implementing flexible, combinable interactive controls. This differential approach to graphical interaction uses constrained optimization to couple user controls to graphical objects in a manner that permits a variety of controls to be freely combined. The differential approach provides a new set of abstractions that enable new types of interaction techniques and new ways of modularizing applications. (AN)

Descriptors :   *IMAGE PROCESSING, *COMPUTER GRAPHICS, *INTERACTIVE GRAPHICS, *CONTROL THEORY, MATHEMATICAL MODELS, ALGORITHMS, COMPUTERIZED SIMULATION, LINEAR SYSTEMS, OPTIMIZATION, COMPUTATIONS, PARAMETRIC ANALYSIS, THESES, THREE DIMENSIONAL, FEEDBACK, DIFFERENTIAL EQUATIONS, EULER EQUATIONS, MAN COMPUTER INTERFACE, SPARSE MATRIX, DYNAMIC PROGRAMMING, RUNGE KUTTA METHOD, VIRTUAL REALITY, SIMULATION LANGUAGES.

Subject Categories : Computer Programming and Software
      Cybernetics

Distribution Statement : APPROVED FOR PUBLIC RELEASE