{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2023,10,25]],"date-time":"2023-10-25T04:35:33Z","timestamp":1698208533927},"reference-count":0,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2008,10,9]],"date-time":"2008-10-09T00:00:00Z","timestamp":1223510400000},"content-version":"vor","delay-in-days":5548,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Computer Graphics Forum"],"published-print":{"date-parts":[[1993,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>A new method for generating sphere\u2010like images, using parabolic surfaces delimited by Bresenham's circle\u2010 generation algorithm, is presented. In many cases the resultant images are indistinguishable from spheres illuminated from a given single direction. The main form of the algorithm uses first and second integer differences to minimise computation and uses typically not more than one floating\u2010point calculation per sphere. Two variants of the algorithm are given, one optimized for the special case of the light\u2010source being behind the view\u2010point, and one in which values are calculated for a z\u2010buffer hidden\u2010surface algorithm at the same time as the pixel values. The difference formulae can be exploited by differencing hardware or digital signal processors although very little arithmetic, typically five low\u2010weight integer operations, including address calculation operations, is required per pixel on a conventional architecture.<\/jats:p>","DOI":"10.1111\/1467-8659.1230061","type":"journal-article","created":{"date-parts":[[2003,3,11]],"date-time":"2003-03-11T11:31:52Z","timestamp":1047382312000},"page":"61-72","update-policy":"http:\/\/dx.doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Fast Spheres"],"prefix":"10.1111","volume":"12","author":[{"given":"John W.","family":"Patterson","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2008,10,9]]},"container-title":["Computer Graphics Forum"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1111%2F1467-8659.1230061","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/1467-8659.1230061","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,10,25]],"date-time":"2023-10-25T00:38:38Z","timestamp":1698194318000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/1467-8659.1230061"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1993,8]]},"references-count":0,"journal-issue":{"issue":"3","published-print":{"date-parts":[[1993,8]]}},"alternative-id":["10.1111\/1467-8659.1230061"],"URL":"https:\/\/doi.org\/10.1111\/1467-8659.1230061","archive":["Portico"],"relation":{},"ISSN":["0167-7055","1467-8659"],"issn-type":[{"value":"0167-7055","type":"print"},{"value":"1467-8659","type":"electronic"}],"subject":[],"published":{"date-parts":[[1993,8]]},"assertion":[{"value":"2008-10-09","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}