Appeal No. 96-2022
Application No. 08/132,943
conflict of said cells.
6. A method for developing a solid model representation
of a shape provided as three orthographic views, the method
operating in a graphics system having a processor and memory,
the method comprising the steps of:
transforming said three orthographic views into a
plurality of lines in three dimensional space;
transforming said plurality of lines into a
plurality of three dimensional polyhedrons each comprising a
cell;
constructing a plurality of Boolean equations each
representing the conditions for inclusion of one of said
plurality of lines in said solid model representation;
solving said plurality of equations to create a list
of candidate cells;
constructing said solid model representation from a
subset of said candidate cells.
The examiner relies on the following references:
Masuda et al. (Masuda), “A Mathematical Theory and
Applications of Non-Manifold Geometric Modeling,” Advanced
Geometric Modelling For Engineering Applications, 1990, pages
89-103.
Foley et al. (Foley), Computer Graphics: Principles and
Practice, 2nd edition, Addison-Wesley Publishing Company,
1990, pages 533-551.
Claims 1-8 stand rejected under 35 U.S.C. § 103. As
evidence of obviousness, the examiner offers Masuda and Foley
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