ocr: This package contains one CD-ROM with electronic versions of Papers material 12-17 presented August at the 2001. SIGGRAPH: 12001 conference, held in Los Angeles, California, mats. Material This is CD-ROM presented is in a AdobeTM MacintoshvISO-9660 AcrobatTM, + HTML, Joliet MPEG hybrid and CD-ROM: QuickTimeTM and is for- CC L - - 200 usable on most computer systems. and This Copyright the CD-ROM 0 computer 2001, is published graphics Association by for ACM community. Computing SIGGRAPH Manufactured for Machinery the in the (ACM). SIGGRAPH USAby Disc membership Makers. SIGGRAPH2001 SIGGRAPH2001 ...