Key points are not available for this paper at this time.
1: In discussion of OpenGL implementation the “αview = T-1 • α •T ” included an implicit scale factor. For clarity I replaced this with “αview = S-1•T-1 • α •T•S ” in order to make the scale factor’s necessity clearer. ACM COPYRIGHT NOTICE. Copyright © 1999 by the Association for Computing Machinery, Inc. Permission to make digital or hard copies of part or all of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is
Wartell et al. (Fri,) studied this question.