A formalization for the specification and systematic generation of computer graphics systems

A formalization of graphical processes in computer graphics systems is presented in terms of functions and their system of axioms. The concept of the viewing pipeline is formalized as operation sequence which is a sequential composition of graphical elementary operations. The formalization includes two kinds of operation sequences which are used as the formal specifications of graphics systems and display devices. In order to generate a graphics system using a display device, we introduced the concept of functionality-preserving transformation of operation sequences in terms of various types of commutations among primitive operations. A type of transformation, which is called extraction, plays a central role in the generation algorithm.     

Segments on bit-mapped graphics displays

The problems associated with using picture segments in interactive applications on workstations with bit-mapped displays are discussed. A method for displaying and updating segments is introduced.     

GKS-the standard for computer graphics

GKS is about to be ratified as the first international standard for computer graphics. It will provide a unique base on top of which portable graphical applications software can be built. This paper traces the history of GKS and describes its main concepts.     

SDL支撑系统

ＳＤＬ是一种主要用于对电信系统性能制定确切的功能规格和描述的国际标准语言．本文描述了以ＣＣＩＴＴＳＤＬ’８８为标准，基于图形核心系统（ＧＫＳ）设计实现的ＳＤＬ支撑系统（３Ｓ），包括ＳＤＬ的图形方式（ＳＤＬ／ＧＲ）的文档录入和编辑工作、对录入的ＳＤＬ／ＧＲ文档进行正确性检查和将ＳＤＬ／ＧＲ文本翻译到文字短语方式表达的ＳＤＬ／ＰＲ文本等几部分．此工作的完成对于使用图形方式描述计算机系统，然后翻译到高级语言提供了可能．     

The road to graphics standards

There has been a concerted effort over the last few years to define international standards for computer graphics. This paper outlines the history leading up to GKS being lodged with the International Standards Organization as a Draft Proposal for an international standard.     

基于GKS的菜单式图形命令语言

本文利用CP原理来分解GKS函数,产生出基于GKS的菜单式园形命令语言,并利用这种语言实现GKS的菜单操作。     

Standards in computer graphics

GKS, which recently became the International Standards Organization (ISO) standard for computer graphics programming, is the first of a set of interlocking graphics standards. This paper outlines the important ideas behind GKS, describes its relationship with other standards and discusses the benefits of standardization.     

GKS Programming in a PHIGS Environment

GKS is an international standard for the functional interface to 2D graphics, whilst PHIGS is currently an ISO work item for 2D and 3D graphics. In addition, PHIGS allows improved control over structuring graphics data in the system. With a new work item, the upwards compatability from GKS to PHIGS is being called into question. This paper is an attempt to give direction to these discussions by listing the implications of introducing a software layer between a GKS application program and a PHIGS environment on which this application is to be run. It is intended to highlight differences between the systems and to answer questions such as, “How compatible?”, “Is it possible?”, “How much does the software layer have to do?”, etc.