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The more modern the design, the more complex the surface of the products. Many of the products in our households, our furniture or even car bodies have a freeform surface design, i.e. they are designed with a curved surface which can no longer be described analytically. Therefore, it is no surprise that the freeform surface technique is more and more used in various fields of industrial design

The freeform surface technique is a central part of HiCAD to meet these demands on the design: a complete spectrum for freeform surface and -curve modelling is available, including splines, B-splines, nurbs and coons-patches. HiCAD offers both interpolating and approximating freeform geometries. Various supporting grid manipulations, Boolean operations and cutting routines based on Nurbs are available, just like functions to cut B-spline surfaces. The Surface Designer, a special modeller, enables you to deform freeform surfaces, retaining all border characteristics.

Patch-technique and the generation of transition parts enable you to accomplish a flexible product modelling on a high level.

The use of transition parts enables you to create connecting surfaces between any surfaces. These surfaces can either be tangential or non-tangential with or without offset, all according to the requirements of the user. The "seams" of the transitional parts can also be modelled. The damped course of the curve was particularly emphasised in order to be as close as possible to the aesthetic ideal.
 

Closing gaps with appropriate surfaces while maintaining connection constraints is a common requirement when designing modern products. This is where the Patch-Technique comes into operation. Various automatisms enable you to clamp surfaces into any border in order to remodel them individually with different methods. Even the most unusual and futuristic forms can be implemented easily.