ISO 10303:2001

Description

This part of ISO 10303 specifies the interpretation of the integrated resources to satisfy requirements for

the description of geometric shapes by means of non-manifold surface models.

The following are within the scope of this part of ISO 10303:

– 3D points;

– points defined in the parameter space of curves or surfaces;

– 3D curves;

– curves defined in the parameter space of surfaces;

NOTE – Such curves are also known as pcurves or cons, which are acronyms for parametrised curve

and curve on surface.

– the elementary curve types line, circle, ellipse, parabola, and hyperbola;

– intersection curves;

– polylines that consist of at least three points;

– the elementary surface types plane, cylinder, cone, torus, and sphere;

– swept surfaces created by rotation or linear extrusion of a curve;

– sculptured curves and surfaces;

– trimming of curves and surfaces using topological entities;

– composition of curves and surfaces using topological entities;

– replication of curves, surfaces, and surface models;

– 3D offsets of curves and surfaces;

– non-manifolds.

The following are outside the scope of this part of ISO 10303:

– unbounded geometry;

– self-intersecting geometry;

– geometry in a 2D cartesian coordinate space;

– replication of points;

– topology without an association to a corresponding geometric domain.