Method and apparatus for displaying a cursor along a two dimensi

Details Method and apparatus for displaying a cursor along a two dimensi Method and apparatus for displaying a cursor along a two dimensi

1994-11-23

1996-11-19

Herndon, Heather R.

395129, G06T 360

Patent

active

055771769

ABSTRACT:
A cursor is dynamically attached to a two-dimensional representation of a three-dimensional surface in a CAD system. The system maps input coordinates indicating an initial position and a final position of a cursor to coordinates of a u-v surface representation of a the three-dimensional surface. The u-v coordinates are then mapped to display coordinates. The option to display this cursor on the surface is made by entering a command and by selecting a surface. The cursor preferably includes vectors indicating the magnitude and direction of the slope, and the display includes a window for displaying the u-v representation of the surface. A user can pick points on the surface based on what is visually observed on the display without projecting the point to another surface.

REFERENCES:
patent: 4835528 (1989-05-01), Flinchbaugh
patent: 5019809 (1991-05-01), Chen
patent: 5422987 (1995-06-01), Yamada
patent: 5446833 (1995-08-01), Miller et al.
patent: 5471571 (1995-11-01), Smith et al.
Portraying a Three Dimensional Cursor, IBM Technical Disclosure Bulletin, Jul. 1992, pp. 252-254.

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