Game system, program and image generation method
US6890261B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 1, 2001 |
| Grant date | May 10, 2005 |
| Priority date | — |
| Expiry date | Sep 9, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63F2300/66
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A game system, program and image generating method for drawing an object viewed from various angles are provided. The thickness of an outline image of the object is changed depending on the face shape of the object. The outline image is drawn with a thicker outline when an angle θ between a first vector extending from a point on the face toward the viewpoint and a normal vector changes from the right angle with a lower decrement, and drawn with a thinner outline line when the angle θ changes from the right angle with a higher decrement. The outline image is drawn in the vicinity of an area defined by α≦θ≦90°. An outline texture specified by a texture coordinate, determined based on the inner product between the first vector and the normal vector, is mapped on the object. Another outline image, having constant thickness, is drawn.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.