Appeal No. 2002-1313 Page 2
Application No. 09/282,590
prompted the user to fill-in values of the modification. He then applied the modification
to the object, which changed the appearance of the object on the computer’s display,
and viewed the results. (Id.) The appellants assert that with conventional modeling,
however, a user did not have a clear idea of how a specific modification would affect an
object until he applied the modification thereto. (Id.)
In contrast, the appellants represent a 3D object by an initial definition and a set
of modifiers. Each modifier modifies some portion of the definition and may change the
appearance of the object when applied thereto. A wireframe is used to depict modifiers
that cause an object to assume the approximate shape of the modifiers when applied
thereto. (Appeal Br. at 4.) Such a representation allows a user to see how an object
will look when the modifiers are applied thereto before the modifiers are so
applied. (Id.) The modifiers are ordered as a stack so that the output of each modifier
is fed into the next modifier. When the last modifier is applied to the object, the object
takes on its final shape. (Spec. at 2.)
A further understanding of the invention can be achieved by reading the following
claim:
1. A method of modifying the representation of an object in a three
dimensional modeling system comprising:
displaying a first three dimensional representation of said object;
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