Now that you have automatically and manually fitted the splines to the points, you can go ahead and generate the surface. Note that Prefit does not fit the surface to the marker points but to the splines, which have been fitted to the points. Choose Generate Surface from the Surface menu to fit the surface.

The calculation of a surface may take some time, as it is a complex mathematical problem. The time taken depends on the size of the required control point net. The larger the net, the greater the time taken to fit the surface. To speed up the process, fewer initial iterations can be specified. At a later stage, subsequent iterations may be calculated to refine the surface if greater accuracy is required. Chose Regenerate Surface from the Surface menu to do this.

The resulting surface will be displayed superimposed over the original splines to check for the accuracy of the fit.

You may save the surface by selecting Save Surface As from the File menu. The surface will be saved as a Maxsurf design file and may then be opened in Maxsurf. The markers will also be saved and can be viewed in Maxsurf.

After the surface has been generated you may display the net to see if the result is a net that is clean and easily usable in Maxsurf. Choose Net from the Display menu to display the net.