Geometric modeling apparatus
US5265197A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 21, 1989 |
| Grant date | Nov 23, 1993 |
| Priority date | — |
| Expiry date | Dec 21, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S715/964
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A two- or three-dimensional geometric modeling apparatus in which a two- or three-dimensional shape is input to a processing unit via an input unit to form a shape, the formed shape is extracted from the processing unit and displayed on a display unit, data for changing is input to the processing unit from the input unit in order to change the displayed shape or scale, and the shape or scale is changed on the basis of predetermined stored information, thereby displaying the changed shape or scale on the display unit. The predetermined stored information is stored as a history such that a plot method and plot contents of each of plot operations executed upon formation of the shape and an order of the plot operations correspond to a geometric constraint for defining the shape to be formed. When a portion to be changed of the shape or scale is specified, the history is referred to search a plot operation forming the specified portion to be changed. Instead of inputting adding information for this changing, the searched plot operation is executed in accordance with the data to be changed to execute changing (cancelling, adding, and correction) of the shape or scale.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.