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- Path: sparky!uunet!cs.utexas.edu!sun-barr!ames!agate!darkstar.UCSC.EDU!golding
- From: jean@cse.ucsc.edu (Jean McKnight)
- Newsgroups: comp.doc.techreports
- Subject: UCSC TR: Geometric Tansformations for a Rubber-band Sketch
- Date: 6 Jan 1993 12:54:02 GMT
- Organization: University of California, Santa Cruz (CE/CIS Boards)
- Lines: 56
- Approved: compdoc-techreports@ftp.cse.ucsc.edu
- Message-ID: <1iekpaINNbja@darkstar.UCSC.EDU>
- NNTP-Posting-Host: oak.ucsc.edu
- Originator: golding@oak
-
- University of California at Santa Cruz
- Baskin Center for Computer Engineering and Information Sciences
-
- The following technical report is available electronically or as
- a paper copy. Instructions for getting either follow the abstract.
-
-
- UCSC-CRL-92-39 (available electronically as ucsc-crl-92-39.ps.Z)
- GEOMETRIC TRANSFORMATIONS FOR A RUBBER-BAND SKETCH
- David Joseph Staepelaere (M.S. Thesis)
- September 1992, 63 pages (paper copy $10.00)
-
- Abstract: The flexible rubber-band sketch is a useful representation
- for routing interconnect. In addition to supporting an incremental
- design style, rubber-bands provide a flexible framework for generating
- layout under performance constraints. However, due to reasons of
- compatibility between CAD tools, it may be necessary at times to
- convert a rubber-band sketch to a more restricted geometry such as
- rectilinear or octilinear wiring. This paper presents an efficient
- method, based on the enhanced plane sweep, for converting a rubber-
- band sketch to a topologically equivalent rectilinear or octilinear
- wiring with minimum wire length. A sketch with n rubber-band segments
- can be converted to a restricted geometry with m segments in
- O(n \log n + m) time. In addition to guaranteeing minimum wire length,
- the technique uses heuristic methods to reduce the total number of jogs.
-
-
- This technical report is available electronically through either
- of the following methods:
- 1. through anonymous ftp from ftp.cse.ucsc.edu, in /pub/tr. Log in
- as "anonymous", use your email address as your password, specify
- "binary" before getting the file. Uncompress before printing.
- 2. by mail to automatic mail server rnalib@ftp.cse.ucsc.edu.
- Put this command on the subject line or in the body of the message:
- @@ send ucsc-crl-92-39.ps.Z from tr
- To get the index or abstract list:
- @@ send INDEX from tr
- @@ send ABSTRACTS.1992 from tr
- To get the list of the tr directory:
- @@ list tr
- To get the list of commands and their syntax:
- @@ help commands
-
- Order paper copies from: Technical Library, Baskin Center for Computer
- Engineering & Information Sciences, UCSC, Santa Cruz CA 95064.
- Purchase orders are not accepted. Checks or money orders must be
- for U.S. dollars, payable through a U.S. bank, and made out to
- "UC Regents".
-
- Questions: jean@cse.ucsc.edu
-
- ===========================================================================
- Co-moderator: Richard Golding, Computer & Information Sciences, UC Santa Cruz
- compdoc-techreports-request@ftp.cse.ucsc.edu
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