Smoothing surfaces using reflection lines for families of splines (Q1110258)

In car body design there exist various possibilities to design surfaces with given boundaries. In many cases the resulting surfaces are not automatically smooth enough. A method is presented to define reflection lines on special splines as, for example, the intersection curves of a surface and a family of planes. These reflection lines represent surface irregularities in a very sensitive manner. If the reflection lines have to be changed, a suitable new family of splines is calculated. These smoothed splines can be used to create a smoothed surface. The resulting algorithm has been implemented in a CADCAM system.