POV-Ray : Newsgroups : povray.binaries.images : adding a 'normal' to a camera-- some notes : Re: adding a 'normal' to a camera-- some notes Server Time
6 Oct 2022 02:26:45 EDT (-0400)
  Re: adding a 'normal' to a camera-- some notes  
From: Mr
Date: 12 Jan 2022 05:45:00
Message: <web.61deb111ac36aa6b34c7846e6830a892@news.povray.org>
"Kenneth" <kdw### [at] gmailcom> wrote:
> "Mr" <m******r******at_hotmail_dot_fr> wrote:
> >
> > If this was to be added to that section of the docs (by some superior authority
> > than me), how would you rephrase all of this in the most concise simplified
> > caveat warning apposition to fit in ? maybe something like :
> >
> > "All camera rays will be perturbed using this one-unit sized pattern. "
> >
> > ?
>
> Maybe something like this (or to add to your statement)?
>
> "When used in a camera, the normal pattern will be distorted horizontally,
> depending on your render's aspect ratio. To correct for this, an inverse-scaling
> of the normal is required in x. For example:
> scale <image_height/image_width, 1  1>"
>
> [Thanks, Thomas]

Finally, before we consider documenting it like that, could maybe some developer
confirm that this is really the intended behaviour and not a bug ? Thanks.


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