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Show ITNCT A'qgTFTFn SECURITY CLASSIFICATION OF THIS PAGE (When Date Entered) REPOT DCUMAGNETARTEOAND INSTRUCTIONS REPOT DCUMNATAGTEBOENF ORE COMPLETING FORM I. REORT NMBER2. GOVT ACCESSION NO. 3. RECIPIENT'S CATALOG NUMBER 4. TITLE (and Subtitle) FS. TYPE OF REPORT APERIOD COVERED 1 Jul 81 -31 Dec 84 Discrete B-Splines as an Approach to Computer Final Report Aided Geometric Design 6. PERFORMING ORG. REPORT NUMBER Ln .AUTHOR(s) 8.CONTRACT-OR GRANT NUMBER(.) 44de Richard F. Riesenfeld Elaine Cohen DAAG29-81-K-O1 11 9. PRFOMINGORGNAIZNTDIAODNDNEASSM1 0. PROGRAM ELEMENT PROJECT. TASK 9. PRFOMINGORGNAINZTDIAODNDNEASMS AREA & WORK UNIT NUMBERS University of Utah Salt lake City, UT 84112 II. CONTROLLING OFFICE NAME AND ADDRESS 12. REPORT DATE U. S. Army Research Office 'P-WPMhpr 108'i Post Office Box 12211 13. NUMBEROFPAGES6 14. MOITORING AGENY ME & AD RESS(Ii iii et from, Controlig Office) IS. SECURITY CLASS. (of this report) Unclassified IS*. DECLASSIFICATION/DOWNGRAOING SCmEDULE 16. DISTRIBUTION STATEMENT (of this Report) Approved for public release; distribution unlimited. E L E!.CI L N OV2218 17. DISTRIBUTION STATEMENT (of the abstract entered In Block 20, It different from Report) NAA 19. SUPPLEMENTARY NOTES The view, opinions, and/or findings contained in this report are those of the author(s) and should not be construed as an official Department of the Army position, policy, or decision, unless so dpMgaitri hy oth~r dcir,Pntatinn 19.E Y OS (Continu, on r*"ev*a side If neceasevy and Identify by block nu, bar) Discrete Splines C Geometric Design 2. Computers Algorithms L120- miA mani- do ,.ewee fb of 10m"awar md ideifi by bJack nibev) 7J nvestigations have been made of many interesting problems deriving from the applications of discrete splines to the problems of computer aided geometric design. New theory and algorithms have been developed and support mechanisms based on the Oslo algorithm have been incorporated in order to help use the Coa~f geometry model directly to calculate many geometric attributes needed for the design process including surface rendering and intersections. DD I,j awi 73 -c 0o9r9 10n I esVis 9o SOLeT UNCLASSIFIED set...eiqrf --!55 ., FeNes |
