POV-Ray : Newsgroups : povray.tools.general : Norbert Kern's 'Position-Finder' code-- redux : Re: Norbert Kern's 'Position-Finder' code-- redux Server Time
16 Jun 2024 11:03:03 EDT (-0400)
  Re: Norbert Kern's 'Position-Finder' code-- redux  
From: Kenneth
Date: 27 Sep 2018 00:10:01
Message: <web.5bac571cbb085d6ca47873e10@news.povray.org>
"Kenneth" <kdw### [at] gmailcom> wrote:
> >
> > I have got a test scene where the problem is demonstrated...
>
> Yes, I've noticed as well that the found translation doesn't always agree with
> the 'point-of-interest' that's chosen. I think the problem is based on
> the given camera angle.... It *may* be because screen
> size vs. camera angle is not a 'linear' relationship(?)...

Sorry if that sounded confusing; 'screen size' was the wrong phrase. What I
meant was, there may be a non-linear relationship between camera angle and the
resulting view in a render or screen preview-- meaning, as the angle value goes
higher (more wide-angle), the camera view takes in a larger portion of the
scene, but the change may not follow a strictly linear relationship to the
changing angle. (The change in the 'visual' distance between two objects, vs.
the
real POV-ray distance there.) I've never tested this; it would be interesting
to construct a plot of distance values (as seen in the preview render,
horizontally for example) with the camera angle changing all the way from 1 to
90(!)


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