Free-form solid modeling using deformations

Date
1989
Advisor
Özgüç, Bülent
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Bilkent University
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Language
English
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Thesis
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Abstract

One of the most important problems of available solid modeling systems is that the range of shapes generated is limited. It is not easy to model objects with free-form surfaces in a conventional solid modeling system. Such objects can be defined arl^itrarily but then operations on them are not transparent and complications occur. A method for achieving free-form effect is to define regular objects or surfaces, then deform them. This keeps various properties of the model intact while achieving the required visuaJ appearance. This thesis explains a number of geometric modeling techniques with deformations applied to them in attempts to combine various approaches developed so far. Regular deformations, which include twisting, bending, and tapering, and free-form deformation technique are combined as a new deformation method. This eliminates some of the disadvantages peculiar to each method and utilizes the advantages of both.

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Keywords
Deformations, geometric modeling of solids, free-form surfaces,, user interface design, shading, hidden surface elimination, computer graphics
Citation
Published Version (Please cite this version)