ISO/IEC 9636-4:1991

Name: ISO/IEC 9636-4:1991 — Information technology — Computer graphics — Interfacing techniques for dialogues with graphical devices (CGI) — Functional specification — Part 4: Segments
SKU: ISO/IEC 9636-4:1991
Price: 73800 RUB
Availability: InStock

Information technology — Computer graphics — Interfacing techniques for dialogues with graphical devices (CGI) — Functional specification — Part 4: Segments

Название (английский):

ISO/IEC 9636-4:1991

Information technology — Computer graphics — Interfacing techniques for dialogues with graphical devices (CGI) — Functional specification — Part 4: Segments

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 41
Дата публикации:: 18 декабря 1991 г.
Издание:: ISO/IEC IS 9636 edition 1 version 1
ICS:: 35.140

Тип поставки:

Full version73 800 ₽Read online 24h1 200 ₽Read online 72h1 800 ₽

Язык документа:

ruen

Срок поставки:7 раб. дн. (перевод)

Цена:73 800 ₽

Описание (английский):

Defines those functions of the interface concerned with the creation, modification, and manipulation of graphic pictures using segments. Annexes A and B form an integral part of this standard. Annexes C and D are for information only.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO/IEC 9636-4:1991 specifies the segment functionality of the Computer Graphics Interface (CGI) used to create, modify and manage graphic pictures composed of grouped graphic primitives. Part 4 of ISO/IEC 9636 focuses on segment storage and the interface functions that operate on segments - including creation, reopening, closing, copying, renaming and deletion - and the mechanisms for rendering, regeneration and inquiry. Annexes A and B are integral; Annexes C and D provide informative guidance.

Keywords: ISO/IEC 9636-4, CGI segments, computer graphics interface, segment storage, graphic object pipeline.

Key Topics

Segment identification and lifecycle

Each Segment has a unique Segment identifier; identifiers may be reused after deletion.
Segments are created with CREATE SEGMENT, closed with CLOSE SEGMENT and can be reopened (REOPEN SEGMENT). At most one Segment may be open at a time.
GET NEW SEGMENT IDENTIFIER returns an available identifier for client use.

Segment content and immutability

Graphic objects (primitives with attributes) are appended to segments during definition; objects in a segment cannot be modified or removed individually once stored.

Segment attributes and behaviour

Attributes covered include visibility, transformation, highlighting, detectability, display priority, and pick priority.
Attributes influence rendering, feedback (e.g., highlighting for user interaction), and input association for picking.

Display and regeneration

Functions and modes for segment display, quick update methods, explicit segment display and segment regeneration are defined, including handling of segment storage overflow.

Copying, inheritance and picking

COPY SEGMENT semantics and the inheritance filter (including clipping inheritance) determine how attributes and geometry propagate when segments are duplicated.
Picking and simulate-pick functions tie segments into input mechanisms.

Inquiry and state management

Functions to query segment description tables, segment state lists, individual segment states and lists of identifiers in use.

Applications

Reference for developers implementing CGI-compliant graphics systems or graphics device drivers.

Useful to software engineers building virtual devices (class OUTPUT and OUTIN), graphics libraries, visualization tools and CAD systems that require structured, reusable scene elements.

Guidance for implementers concerned with rendering pipelines, pick input behavior, segment-level updates and storage management.

Related Standards

ISO/IEC 9636-1: Overview, profiles and conformance

ISO/IEC 9636-2: Control

ISO/IEC 9636-3: Output

ISO/IEC 9636-5: Input and echoing

ISO/IEC 9636-6: Raster

ISO 7942:1985 (GKS functional description)

ISO/IEC 9637 (data stream binding, character and binary encoding)

This standard is essential when designing interoperable, standards-compliant CGI implementations that manage reusable graphic segments and predictable rendering and input behavior.

ISO/IEC 9636-4:1991

Abstract

Похожие стандарты

Overview

Key Topics

Applications

Related Standards

Технические детали

ISO 7942:1985

Information processing systems — Computer graphics — Graphical Kernel System (GKS) functional description

ISO/IEC 9636-5:1991

Information technology — Computer graphics — Interfacing techniques for dialogues with graphical devices (CGI…

ISO/IEC 9636-1:1991

Information technology — Computer graphics — Interfacing techniques for dialogues with graphical devices (CGI…

ISO/IEC 9636-2:1991

Information technology — Computer graphics — Interfacing techniques for dialogues with graphical devices (CGI…

ISO/IEC 9636-3:1991

Information technology — Computer graphics — Interfacing techniques for dialogues with graphical devices (CGI…

ISO/IEC 9636-6:1991

Information technology — Computer graphics — Interfacing techniques for dialogues with graphical devices (CGI…

ISO/IEC 9637-2:1992

Information technology — Computer graphics — Interfacing techniques for dialogues with graphical devices (CGI…