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- W137645055 abstract "We consider the construction of spline features on spline surfaces. The approach taken is a generalization of the hierarchical surface introduced in [Forsey88]. Features are regarded as spline-defined vector displacement fields that are overlain on existing surfaces. No assumption is made that the overlays are derived from the base surface. They may be applied with any orientation in a non-hierarchical fashion. 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." @default.
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- W137645055 date "1993-10-30" @default.
- W137645055 modified "2023-09-26" @default.
- W137645055 title "Spline Overlay Surfaces" @default.
- W137645055 hasPublicationYear "1993" @default.
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