POV-Ray : Newsgroups : povray.general : At wits' end : Re: At wits' end Server Time
5 May 2024 15:15:59 EDT (-0400)
  Re: At wits' end  
From: Anthony D  Baye
Date: 14 Mar 2016 00:10:00
Message: <web.56e6395f509d798cfd6b6fe10@news.povray.org>
"Anthony D. Baye" <Sha### [at] spamnomorehotmailcom> wrote:
> "Bald Eagle" <cre### [at] netscapenet> wrote:
> > "Bald Eagle" <cre### [at] netscapenet> wrote:
> > > Posted.
> >
> > Maybe that ought to be:
> >
> >
http://news.povray.org/povray.binaries.images/thread/%3Cweb.56e620c88e79eb4c5e7df57c0%40news.povray.org%3E/
> >
> > :O
>
> hmmm... your math differs from the site I was using for information.
>
> As for the logo solution, I've done it that way before.  This is something else
> I wanted to try.
>
> And it still doesn't explain the strange floating-point error I get out of the
> vec2rot macro.  I've narrowed it down to that particular spot: The vector I get
> out of that macro does not conform to the angle I give it.
>
> Regards,
> A.D.B.

Also, that right angle you have there doesn't make a 45-degree angle with L/2

the rise is sqrt(3)/2 or sin(60), the run is 0.5 (half the side length) +
sin(30) ==> 1 so atan(sqrt(3)/2)) ~= 40.8934 degrees which makes the upper
(downward) angle ~= 49.1066 degrees.

Regards,
A.D.B.


Post a reply to this message

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