Forschungs- & Entwicklungsinformationsdienst der Gemeinschaft - CORDIS

Software library for surface Intersections

A prototype toolkit for surface intersection and surface self-intersection has been developed that combine the uses of approximate implicitization and recursive subdivision algorithms.

The toolkit better solves the challenges of singular and near singular intersections, situations where the surfaces are parallel or near parallel along the intersection toolkit. These situations are not properly handled in traditional intersection algorithms in CAD.

The toolkit introduce the possibility of finding the topology and geometry of self-intersection curves in surfaces. Functionality not available in CAD-systems before the GAIA II project.

By the end of the project the stability of the toolkit was not at an industrial level. The computational speed for self-intersection detection in surfaces with ridges of vanish surface normals was much too slow for industrial use.

The ability to find and describe singular and near singular intersections and self-intersections represents a significant improvement in intersection algorithm technology.

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