A METHOD OF OPERATING A CAD SYSTEM MODEL FOR MODELLING AN ARTICLE TO BE MANUFACTURED

摘要

A method of operating a computer aided design system model for an article to be designed or manufactured, the method performed on a data processing system; the method includes in a CAD system model capable of representing an article as either algebraic geometry or facet geometry, receiving a mesh geometry representing a surface of the article in 3 dimensions. Constraints to be applied to the mesh geometry are received and the mesh geometry is solved as an exact surface. An updated model of the mesh geometry is stored.