Method and apparatus for interactively manipulating models

Details Method and apparatus for interactively manipulating models Method and apparatus for interactively manipulating models

1994-01-05

1995-08-15

Jankus, Almis R.

395128, 395155, 395161, G06T 500

Patent

active

054427355

ABSTRACT:
A method and a data processing system including a display device, an entry apparatus for enabling a user to enter data representing lines or surfaces of a model, such model data being stored in a storage device, and a retrieval apparatus for retrieving model data from the storage device and displaying the image represented by such model data on a screen of the display device. Also included are a hand-held pointing device adapted to cooperate with the screen for enabling the user to engage a particular point of the screen, a registering apparatus for registering when the pointing device is engaging the screen and for determining the particular point of the screen that is engaged, an association apparatus for associating details of the particular point of the screen engaged with a corresponding point in the model data, and a processor, responsive to input from the registering apparatus, for repetitively applying a smoothing function to the model data while the registering apparatus indicates that the pointing device is engaging the screen, the model data as smoothed being stored in the storage device after each application of the smoothing function. The smoothing function so that its smoothing effect on a particular bit of model data is dependent on a distance measure between that particular bit of model data and the point in the model data identified by the association apparatus.

REFERENCES:
patent: 4607340 (1986-08-01), Nagai
patent: 4875033 (1989-10-01), Kato et al.
patent: 4928243 (1990-05-01), Hodges et al.
patent: 4958272 (1990-09-01), Wake
patent: 5136390 (1992-08-01), Inova et al.
patent: 5208901 (1993-05-01), Sasaki et al.
patent: 5249263 (1993-09-01), Yanker
patent: 5276786 (1994-01-01), Long et al.

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