Industrial automation systems and integration —
Product data representation and exchange —
Part 517:
Application interpreted construct: Mechanical design geometric presentation

1 Scope

• the visual presentation of mechanical design shape representations;
• the assignment of visual presentation attributes to geometric and topological items;
• algorithms for the projection of 3D shapes into planes;
• the location of shape projections within a window;
• multiple views within one window;
• the background colour of a window;
• point and curve colour;
• point font;
• curve font;
• curve styles dependent on the role of the curves in the definition of a surface;

  EXAMPLE    Boundary curves and grid curves play different roles in the definition of a surface.

• pre-defined colours;
• pre-defined curve styles.

The following are outside the scope of this document:

• the presentation of annotation, i.e., text and symbols;
• the assignment of geometric items to layers;
• surface characteristics such as transparency and reflectance;
• multiple windows;
• representation of products;
• hidden line and hidden surface removal;
• surface colour;
• light sources.

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