Computer Graphics Interface Research Articles

Computer graphics interface: A developer's perspective

The Computer Graphics Interface (CGI) is introduced and analysed with respect to the current needs of device manufacturers, systems designers, and users. Discussion includes topics such as the progress of CGI development, the features of the CGI, and the CGI's fundamental goals. Emphasis is placed on how well the CGI relates to ‘real world’ application environments. To determine the suitability of the CGI to such environments, the relationship between current graphics standards and the CGI is explored and innovative features described. Finally, the analysis outlines relationships between the CGI and application environments, and addresses the need for additional functionality to support today's application requirements completely.

Computer graphics interface

The Computer Graphics Interface (CGI) is introduced and analysed with respect to the current needs of device manufacturers, systems designers, and users. Discussion includes topics such as the prog...

Approach to solving the compatibility problem between GKS and PHIGS

The differences that exist between the concept sof GKS/GKS-3D and PHIGS do so not only because of technical reasons. The approach of PHI-GKS presented in this paper describes concepts that offer the functionality of PHIGS and ensure compatibility to GKS and GKS-3D. The harmonization of these graphics standards is necessary not only for the expansion of existing application programs, but also for the development of related standards such as the Computer Graphics Interface (CGI), the Computer Graphics Metafile (CGM) or the presentation entities in STEP (Standard of Exchange of Product Model Data).

Computer Graphics Interface and CAD applications

This paper sets out to show the relevance of the proposed Computer Graphics Interface Standard (DP 9639) to typical users and implementors of CAD systems. The paper first considers the architectura...

Computer Graphics Interface and CAD applications

This paper sets out to show the relevance of the proposed Computer Graphics Interface Standard (DP 9639) to typical users and implementors of CAD systems. The paper first considers the architectural relationship between the CAD system and CGI devices, and the potential benefits associated with a CAD system which incorporates such devices. The major features of the CGI are then reviewed briefly and contrasted with the functionality of GKS and the paper concludes by considering some probable future directions for standards in this area and some consequences of the moves.

Conformance specification in the CGI

The Computer Graphics Interface (CGI) is a developing International Organization for Standardization (ISO) standard proposal 1 that addresses the interface between a virtual graphics device and an implementation of one of the ISO functional standards (namely, Programmer's Hierarchical Interactive Graphics System (PHIGS) 2, Graphical Kernel System (GKS) 3, and Graphical Kernel System for Three Dimensions (GKS-3D) 4. This paper may interest those who are tracking the development of the CGI and describes a recently introduced method for structuring conformance to provide for a wide diversity of device technology and architecture, while also providing for the spread of functional specification requirements. This scheme involves the definition of a number of standard constituency profiles, and pays particular attention to the needs of GKS and the Computer Graphics Metafile (CGM) 5 in accessing the virtual device through the CGI. It must be stressed that the CGI is an emerging standard, and has not yet achieved a state of technical stability.

A SPICE Interactive Graphics Preprocessor

This paper discusses the development and use of an interactive computer graphics interface to the SPICE circuit simulation program. This package provides for the convenient input of the circuit topology and the values of the circuit elements from the designer, and creates a structured database to store the circuit information.

Molbuild - an interactive computer graphics interface to molecular mechanics

An interactive computer graphics program designed to be used in conjunction with the molecular mechanics programs MM2 and MMP2 is described. It allows the required input molecular structure to these programs to be interactively constructed on a graphics screen using a lightpen as input device. The program allows the user to adjust all geometrical parameters of the displayed structure, making it possible to construct unorthodox structures and transition-state models.