Spline
Overlay
Surfaces
Richard
H.
Bartles and
David
R.
Forsey
Computer Science Technical Report, January 1993
TR-93-48
In particular, we present a "cheap" version of the concept in which the displacement field is mapped to the base surface approximately, through the mapping of its control vectors alone. The result is a feature that occupies the appropriate position in space with respect to the base surface. It may be manipulated and rendered as an independent spline, thus avoiding the costs of a true displacement mapping. This approach is useful for prototyping and previewing during design. When a finished product is desired, of course, true displacement mapping is employed.