Siemens Product Lifecycle Management Software Inc.

Jeffrey A Weidman

Feng Yu

Bo Kyoung Moon

According to one embodiment of the invention, a method for interfacing with a surface within a computer-aided drawing environment includes determining that a plurality of curves operable to define the surface constitute a P&#xd7;1 surface condition. A P&#xd7;1 surface condition is defined by a number of first curves equal to P and only one second curve. P is an integer greater than zero. The method also includes converting the P&#xd7;1 surface condition into an N&#xd7;M surface condition in response to determining that a plurality of curves constitute a P&#xd7;1 surface condition. An N&#xd7;M surface condition is defined by a number of third curves equal to N and a number of fourth curves equal to M. N and M are integers greater than one. The method also includes constructing an N&#xd7;M surface under the N&#xd7;M surface condition. The method also includes modifying the N&#xd7;M surface to edit a drawing.

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Macomb Township, MI, United States of America

Jeffrey A Weidman