Joseph O'Rourke, Chi-Bin Chien, Thomas Olson, David Naddor
{"title":"A new linear algorithm for intersecting convex polygons","authors":"Joseph O'Rourke, Chi-Bin Chien, Thomas Olson, David Naddor","doi":"10.1016/0146-664X(82)90023-5","DOIUrl":null,"url":null,"abstract":"<div><p>An algorithm is presented that computes the intersection of two convex polygons in linear time. The algorithm is fundamentally different from the only known linear algorithms for this problem, due to Shamos and Hoey. These algorithms depend on a division of the plane into either angular sectors (Shamos) or parallel slabs (Hoey), and are mildly complex. Our algorithm searches for the intersection points of the polygons by adbancing a single pointer around each polygon, and is very easy to program.</p></div>","PeriodicalId":100313,"journal":{"name":"Computer Graphics and Image Processing","volume":"19 4","pages":"Pages 384-391"},"PeriodicalIF":0.0000,"publicationDate":"1982-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0146-664X(82)90023-5","citationCount":"148","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Computer Graphics and Image Processing","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0146664X82900235","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 148
Abstract
An algorithm is presented that computes the intersection of two convex polygons in linear time. The algorithm is fundamentally different from the only known linear algorithms for this problem, due to Shamos and Hoey. These algorithms depend on a division of the plane into either angular sectors (Shamos) or parallel slabs (Hoey), and are mildly complex. Our algorithm searches for the intersection points of the polygons by adbancing a single pointer around each polygon, and is very easy to program.
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