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:
Aug. 15, 1989
Filed:
Aug. 18, 1987
Peter Quarendon, Romsey, GB;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method of generating a spatial representation of a 3-D solid object, which includes component shapes, which can be defined by transforming constructive solid geometry primitives includes the steps of, setting up a structure, to define the object in terms of the primitives and transforms setting up a definition of a 3-D box in a world space and then sub-dividing the box into sub-boxes, generating test-cells in object space by performing on the sub-boxes the inverse of each transformation to be performed on the primitives to create the object and determining which of the test-cells intersect the object. Thus, the need to transform the object primitives is avoided. A particular application of the method is the generation of 2-D images of a 3-D solid object.