POV-Ray : Newsgroups : povray.general : Disc which is not flat : Re: Disc which is not flat Server Time
7 Aug 2024 09:27:14 EDT (-0400)
  Re: Disc which is not flat  
From: Dave Dunn
Date: 30 Nov 2001 21:25:06
Message: <3C083F6A.8C415037@aol.com>
Ken wrote:

> I am perfectly happy with the current behavior and with respect choose
> to disagree with your suggestion.

At the risk of flogging this topic beyond death, I would like to point out that
the default values for translate and rotate are <0,0,0>, but that the default
values for scale are <1,1,1>. In other words, and object that has not been
translated has a default translation of zero on all axes because it hasn't been
translated yet. The same object, if it has been created at a given size, is
scaled to 1 on all axes. In this way, we can move an object along x by typing
"translate x*4," because this is, in effect, a translation of <4,0,0>. In order
to maintain consistency at the user level (I keep hearing that things should
hold true in every case, a scale of our object along y by 2 should be able to
be written "scale y*2," returning the defaults, for an equivalent expression of
<1,2,1>. IMO, the warning (and certainly not an error) should not be given,
because the original assumption that default scaling should be <0,0,0>, is
wrong.


Post a reply to this message

Copyright 2003-2023 Persistence of Vision Raytracer Pty. Ltd.