Free-Form Deformation as a General Purpose Interactive Modeling Tool
Abstract
The geometric modeling technique known as Free-form Deformation (FFD) was conceived by Sederberg and set forth in a Ph.D. dissertation by Parry. Parry's dissertation deals with the feasibility of using FFD to accomplish free-form sculpting in a non-interactive constructive solid geometry modeling system and does not address any high-level operations. FFD can be used as a general purpose technique for manipulating geometric models in a standard interactive 3-D world coordinate space, i.e. most high-level modeling operations can be accomplished using FFD as the interactive manipulative medium. The rational basis function is explored along with free hand an algorithmic techniques for single and grouped control point manipulation. Operations from the viewpoint of the user of an interactive graphics environment are identified. High-level operations are demonstrated. The characteristic of model continuity is explored.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1986
- Accession Number
- ADA176537
Entities
People
- Rodney O. Davis
Organizations
- Air Force Institute of Technology