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Abstract

Method for the modification of three-dimensional objects via an input device allowing only two-dimensional input. The method comprises creating a three-dimensional object and displaying a three-dimensional representation of the object. The method further comprises activating the three-dimensional object and displaying a representation of a three-dimensional coordinate system. One of the axes of the three-dimensional coordinate system assigned to the object is selected, and the origin of the assigned coordinate system is shifted within a global three-dimensional coordinate system along a line defined by the orientation of the selected axis of the assigned coordinate system. The three-dimensional object is then computed relative to the global coordinate system after shifting according to the displacement of the origin of the assigned coordinate system. A representation of the shifted three-dimensional object is then displayed on the computer screen.

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First Claim