Patent
1993-04-16
1996-07-16
Jankus, Almis R.
395155, 395159, G06T 1500
Patent
active
055375235
ABSTRACT:
The present invention is to output the geometric form characteristic, such as the principal curvature of a geometric model constituted in a computer to meet an image of a user to easily modify the form. In order to achieve the foregoing object, there is suggested an apparatus for displaying a geometric form characteristic that includes a form display device for displaying, on a display device such as a CRT, a geometric model input in the computer, a position instruction device for indicating, on the display screen, an arbitrary point on the displayed form by using a pointing device such as a mouse, a geometric form characteristic calculating device for calculating the geometric form characteristic at the arbitrarily indicated point, and a geometric form characteristic display device for displaying the calculated geometric form characteristic in the form of a graph. According to the present invention, a form that meets the image of a user, such as a concave, convex and the plane portion can be displayed as the user directly touches the form using a mouse.
REFERENCES:
patent: 3613501 (1971-10-01), Sanders
patent: 4228430 (1980-10-01), Iwamura et al.
patent: 4895431 (1990-01-01), Tsujiuchi et al.
patent: 5333244 (1994-07-01), Harashima
Arai Hiroshi
Harashima Ichiro
Nakajima Norihiro
Hitachi , Ltd.
Jankus Almis R.
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