ISO 10303-518-2002 PDF

Full title and description

ISO 10303-518:2002 — Industrial automation systems and integration — Product data representation and exchange — Part 518: Application interpreted construct: Mechanical design shaded presentation. This entry describes the first edition published in August 2002 (PDF format commonly distributed by standards sellers); the part specifies constructs used to describe shaded visual presentations of mechanical design shape representations.

Abstract

ISO 10303-518:2002 defines the interpretation of integrated STEP resources to satisfy requirements for describing the visual presentation of shaded shapes. It covers assignment of basic presentation attributes (colour, curve/surface styles) to points, curves and surfaces; surface characteristics such as reflectance and transparency; projection algorithms including light sources and hidden-line/hidden-surface removal; view placement and window/background handling. Annotation and layering concepts are out of scope for this part.

General information

• Status: Withdrawn (first edition withdrawn; later revised editions published).
• Publication date: August 2002.
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 25.040.40 (Industrial process measurement and control / Product data representation and exchange).
• Edition / version: Edition 1 (2002).
• Number of pages: 48 pages (first edition PDF length as published).

Scope

This part of ISO 10303 addresses the visual presentation requirements for mechanical shape representations exchanged using STEP. Within scope are: assignment of presentation attributes to geometric and topological items; projection of 3D shapes onto planes (including camera/projection placement within presentation windows); multiple views in a single window; background colour; hidden-line and hidden-surface removal; lighting models and point/curve/surface colour and style; shading and surface characteristics such as transparency and reflectance; and sets of predefined colours and curve styles. The part does not include annotation (text) or layer management.

Key topics and requirements

• Definitions and integrated resource constructs for shaded presentation of mechanical shapes.
• Assignment of presentation styles (point, curve, surface) to shape constituents.
• Shading and surface appearance attributes (reflectance, transparency).
• Projection and view algorithms including camera positioning and light sources.
• Hidden-line and hidden-surface removal algorithms and semantics.
• Specification of predefined colours and curve styles for consistent visual exchange.
• Interoperability with other STEP resources (presentation resources, geometry resources) for rendering exchanged product data.

Typical use and users

Implementers and users include CAD and PLM software vendors, visualization/rendering engine developers, integrators who exchange STEP data between engineering applications, and standards engineers implementing STEP application interpreted constructs (AICs). The ISO 10303 family (STEP) is widely used to enable CAD/CAM/CAE interoperability and long‑term product data archiving; AP and resource parts that define presentation behaviour are of interest to product visualization and model-based engineering teams.

Related standards

ISO 10303 is a modular family; Part 518 depends on and complements presentation and geometry resources such as ISO 10303-46 (Visual presentation / integrated generic resources) and other STEP application protocols and modules that carry shape and geometry (for example APs in the 200–299 ranges). Part 518 has later revisions/editions (2011, then 2014 edition), and users should consult the most recent published edition for current normative text.

Keywords

ISO 10303, STEP, 10303-518, mechanical design, shaded presentation, visual presentation, presentation attributes, shading, reflectance, transparency, hidden-line removal, projection, AIC (application interpreted construct), CAD interoperability.

FAQ

Q: What is this standard?

A: ISO 10303-518:2002 is the first-edition STEP application interpreted construct that specifies how to represent shaded visual presentations of mechanical shape data for exchange between systems. It is published by ISO as part of the ISO 10303 family.

Q: What does it cover?

A: It covers presentation constructs for shading and appearance (colour, reflectance, transparency), assignment of styles to geometry (points, curves, surfaces), view/projection definitions including lighting and hidden-line/surface removal, multiple views and window/background handling. It does not cover annotation (text) or layer management.

Q: Who typically uses it?

A: CAD/PLM vendors, STEP implementers, visualization and rendering developers, integrators that exchange 3D product data, and engineering groups implementing model-based visualization workflows. The STEP family is intended to support interoperability across CAD/CAM/CAE tools.

Q: Is it current or superseded?

A: The 2002 edition is withdrawn and has been revised by later editions; a 2014 edition of ISO 10303-518 is published and should be used as the current authoritative text. Users seeking normative requirements or current text should obtain the latest published edition of Part 518.

Q: Is it part of a series?

A: Yes — ISO 10303 is a large, modular family (STEP). Part 518 is one of the Application Interpreted Construct parts (500-series) that work with integrated generic resources (40–62 series) such as ISO 10303-46 (visual presentation) and with various application protocols and modules in the 1000+ ranges.

Q: What are the key keywords?

A: Shaded presentation, visual presentation, ISO 10303, STEP, AIC, mechanical design, shading, reflectance, transparency, hidden-line removal, projection, presentation styles.