Method for controlling the level of detail displayed in a computer generated screen display of a complex structure
US5825998A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 9, 1996 |
| Grant date | Oct 20, 1998 |
| Priority date | — |
| Expiry date | Jul 9, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T15/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for controlling the level of detail displayed in a computer generated screen display of a complex structure in which the structure is modeled as a root volume bounding all of the parts of the structure, with the individual parts comprising sub-objects bounded in sub-volumes. The method begins by selecting the root volume (202) and then enters the step of determining whether or not all sub objects within the selected volume are turned off (204). If they are, the entire display is culled. If they are not, the system then computes the screen coordinates of the selected volume (208). The method proceeds to the step of determining whether or not the selected volume is on the screen or off. If it is off the screen, the entire volume is culled. If it is on screen, however, a determination is made as to whether or not all sub-objects are turned on (214). If all sub-objects are turned on, the number of screen pixels for the selected volume is computed (216). This screen size is compared to a user defined threshold (218) and if its smaller than the threshold, the object is drawn as a bounding volume (220). If the selected object is larger than the threshold, a determination is made …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.