Re: hypercube rotations

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From	JohnF <john@please.see.sig.for.email.com>
Newsgroups	comp.lang.postscript
Subject	Re: hypercube rotations
Date	Fri, 24 Jun 2016 04:28:55 +0000 (UTC)
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luser droog <luser.droog@gmail.com> wrote:
> On Monday, June 20, 2016 at 2:34:08 PM UTC-5, luser droog wrote:
>> http://codegolf.stackexchange.com/a/83318/2381
> 
> I've wanted to write this program ever since reading Rudy Rucker
> and P.D. Ouspensky, and A.K. Dewdney. For review, here's a very
> nice paper I just found about the wonders of rotation matrices:
> 
> http://www.fastgraph.com/makegames/3drotation/
> 
> I've reduced the golfed version to 683 chars, using the 
> binary-token-strings from my golf library, and abbreviated
> system names for stuff that would be longer in a binary-token-
> string. The rotations are the prime candidate for further
> reductions, but none of the other answers have solved that
> yet either! :)

In addition to your fastgraph.com link above, I found
  http://paulbourke.net/geometry/rotate/
very useful when I programmed this stuff in C.
It's a bit more "cookbook", and it also (though briefly)
discusses quaternions (which I agree is likely the
better approach, though, at least for me, harder to
intuitively see how it's working).
-- 
John Forkosh  ( mailto:  j@f.com  where j=john and f=forkosh )

Thread

hypercube rotations luser- -droog <mijoryx@yahoo.com> - 2016-06-20 12:34 -0700
  Re: hypercube rotations luser droog <luser.droog@gmail.com> - 2016-06-22 22:11 -0700
    Re: hypercube rotations Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-06-22 23:48 -0700
    Re: hypercube rotations JohnF <john@please.see.sig.for.email.com> - 2016-06-24 04:28 +0000
      Re: hypercube rotations luser droog <luser.droog@gmail.com> - 2016-07-08 01:43 -0700
        Re: hypercube rotations Peter Billam <peter@www.pjb.com.au> - 2016-07-14 09:41 +0000
        Re: hypercube rotations Peter Billam <peter@www.pjb.com.au> - 2016-07-15 06:19 +0000
          Re: hypercube rotations Bogus@Embarq.com (Steve) - 2016-07-15 12:15 +0000
          Re: hypercube rotations JohnF <john@please.see.sig.for.email.com> - 2016-07-16 00:14 +0000
            Re: hypercube rotations luser droog <luser.droog@gmail.com> - 2016-07-15 21:42 -0700
              Re: hypercube rotations JohnF <john@please.see.sig.for.email.com> - 2016-07-16 05:01 +0000
          Re: hypercube rotations luser droog <luser.droog@gmail.com> - 2016-09-13 18:14 -0700
        Re: hypercube rotations Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-08-05 00:10 -0700
    Re: hypercube rotations luser droog <luser.droog@gmail.com> - 2016-09-13 18:30 -0700

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