ISO/IEC 9636-2:1991

Name: ISO/IEC 9636-2:1991 — Information technology — Computer graphics — Interfacing techniques for dialogues with graphical devices (CGI) — Functional specification — Part 2: Control
SKU: ISO/IEC 9636-2:1991
Price: 79200 RUB
Availability: InStock

Information technology — Computer graphics — Interfacing techniques for dialogues with graphical devices (CGI) — Functional specification — Part 2: Control

Название (английский):

ISO/IEC 9636-2:1991

Information technology — Computer graphics — Interfacing techniques for dialogues with graphical devices (CGI) — Functional specification — Part 2: Control

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 44
Дата публикации:: 18 декабря 1991 г.
Издание:: ISO/IEC IS 9636 edition 1 version 1
ICS:: 35.140

Тип поставки:

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Срок поставки:8 раб. дн. (перевод)

Цена:79 200 ₽

Описание (английский):

Describes those functions of the interface concerned with virtual device management, coordinate space control, and error control. Annexes A and B form an integral part of this standard. Annex C is for information only.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты ISO

Overview

ISO/IEC 9636-2:1991 is Part 2 of the Computer Graphics Interface (CGI) functional specification. It defines the control functions for CGI, focusing on managing the graphical image and the interaction between graphical and non‑graphical parts of an interface. The standard covers virtual device management, coordinate space control and error control, and is intended to be used together with other parts of ISO/IEC 9636 (Part 1 overview/profiles/conformance; Parts 3–6 for output, segments, input/echoing and raster).

Annexes A and B are integral to the standard; Annex C is informative.

Key topics and technical requirements

Virtual Device Management

Lifecycle functions (initialize, terminate), device control, drawing surface preparation, deferral mode and execution of deferred actions.
Support for INPUT, OUTPUT and OUTIN virtual devices.

Coordinate Space Control

Concepts and control of the Virtual Device Coordinate (VDC) system, device coordinates, device viewport and viewport mapping.
VDC extent, tailoring, VDC space/range and drawing surface clipping.
Specification modes and mapping behavior for translating VDC to device coordinates.

Error Control

Error reporting and dequeuing error reports, error handling control and guidance for implementors (annex on control errors).

Precision and Miscellaneous Control

Numerical precision requirements for integer and real VDCs, index and colour precision, client‑specified name precision.
Escape and get‑escape mechanisms, message handling, and inquiry concepts.

Inquiry & State

Control inquiry functions and description tables: device identity and description tables, control description table, function/profile support and control state lists (inquire control state, current precision requirements, VDC-to-device mapping, error handling state).

Practical applications

Graphics system implementors: Implement CGI‑compliant APIs or device drivers that need standardized control of virtual devices and coordinate mapping.

Device manufacturers: Define how raster or vector devices accept CGI control messages, map VDCs to device viewports and report error states.

Software developers: Build cross‑platform graphics applications that interact with CGI virtual devices for consistent coordinate mapping and error semantics.

Standards and conformance testers: Verify compliance with CGI control functions, state lists and inquiry behaviors.

ISO/IEC 9636-2:1991

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Practical applications

Who uses this standard

Related standards

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