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Text File  |  1992-12-18  |  842 b   |  22 lines
  1. Newsgroups: comp.graphics
  2. Path: sparky!uunet!sequent!muncher.sequent.com!tima
  3. From: tima@sequent.com (Timothy Alan Anderson)
  4. Subject: Re: Calculating polygon areas
  5. Message-ID: <1992Dec17.203756.8967@sequent.com>
  6. Sender: usenet@sequent.com (usenet )
  7. Nntp-Posting-Host: family.sequent.com
  8. Organization: Sequent Computer Systems Inc.
  9. References: <1992Dec16.173613.5737@medusa.prime.com> <1992Dec17.154323.17206@medusa.prime.com> <1992Dec17.201739.9370@sophia.smith.edu>
  10. Date: Thu, 17 Dec 92 20:37:56 GMT
  11. Lines: 9
  12.  
  13. <proof using triangles deleted>
  14.  
  15. There is also a proof (more accurately a derivation) using line integrals.
  16. Check back issues of BYTE (around 3 years ago). They had a pretty lengthy
  17. blurb on deriving the infamous poly area summation using that method. It
  18. uses Green's theorom and some moment of inertia stuff...
  19.  
  20. tima@sequent.com
  21.  
  22.