POV-Ray : Newsgroups : povray.pov4.discussion.general : A dream about POV4 : Re: A dream about POV4 Server Time
25 Apr 2024 17:47:02 EDT (-0400)
  Re: A dream about POV4  
From: clipka
Date: 13 Apr 2009 20:20:01
Message: <web.49e3d5a4840aad1a2dae03a10@news.povray.org>
"Zeger Knaepen" <zeg### [at] povplacecom> wrote:
> > Hm... the notation "rotate <1,1,0>*45" does seem intuitive, but I guess
> > we'd
> > need four parameters. Otherwise you'd be surprised why the result would be
> > a
> > rotation by 63 degrees instead ;)
>
> the vector is just a direction, and, as in trace, the length shouldn't
> matter

But by how many degrees do you want to rotate?

If you go for analogy with y*45, the angle to rotate by would be encoded in the
vector's length.

The expression <1,1,0>*45, however, evaluates to a vector that is ~63 POV units
long...

So yes, size *does* matter :)


Post a reply to this message

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