The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 17, 2005
Filed:
Dec. 19, 2002
Jumpei Tsuda, Kawasaki, JP;
Satoshi Nakamura, Yokohama, JP;
Takao Kato, Yokohama, JP;
Jaeyoung Kim, Mapo-Gu, KR;
Jumpei Tsuda, Kawasaki, JP;
Satoshi Nakamura, Yokohama, JP;
Takao Kato, Yokohama, JP;
JaeYoung Kim, Mapo-Gu, KR;
Koei Co., Ltd., Yokohama, JP;
Abstract
A program which can render an object dynamically by using metaballs in a three-dimensional imaginary space is provided. All metaballs MB are disposed in an imaginary box IB, (r/R)is calculated according to a calculation equation expressing a given solid shape of a metaball MB from a center of the metaball MB towards the minimum direction and the maximum direction of a voxel index of a voxel Vx for each vertex of the voxel Vx. At this time, a second-order divided difference is calculated, based upon the second-order divided difference and a first-order divided difference calculated last time the first-order divided difference is updated, and (r/R)is calculated (Sand S) Only two times of addition are performed by utilizing information on vertexes of the adjacent voxels Vx calculated last time, thereby a computation time for (r/R)can be shortened.