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I think this is the first time I ever posted any animation,
and I don't know if GIF is frowned upon for some
reason (I mean since I see few here).
.
Its a 'complex surface' rotating through 4-d space.
The function is f(z)= z^1/3. So the four dimensions
come from mapping u,v (one complex number) to x,y
(another complex number). That is, (u,v) -> (x,y)=(u+iv)^1/3 .
Made with the MegaPov "parametric{}" object.
Post a reply to this message
Attachments:
Download 'croot.gif' (148 KB)
Preview of image 'croot.gif'
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In article <3b182220@news.povray.org>, david sharp says...
> I think this is the first time I ever posted any animation,
> and I don't know if GIF is frowned upon for some
> reason (I mean since I see few here).
> .
> Its a 'complex surface' rotating through 4-d space.
> The function is f(z)= z^1/3. So the four dimensions
> come from mapping u,v (one complex number) to x,y
> (another complex number). That is, (u,v) -> (x,y)=(u+iv)^1/3 .
> Made with the MegaPov "parametric{}" object.
>
It is cute: but difficult to visualize what happens. And also a fairly
short animation, in fact.
GIF as an animation format has the inherent lack of colour depth of the
GIF images: IIRC 256 or less.
Why not try MPG?
--
Regards, Sander
Post a reply to this message
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"Sander" <san### [at] stols com> wrote in message
news:MPG### [at] NEWSPOVRAYORG...
> In article <3b182220@news.povray.org>, david sharp says...
> > I think this is the first time I ever posted any animation,
> > and I don't know if GIF is frowned upon for some
> > reason (I mean since I see few here).
> >
> It is cute: but difficult to visualize what happens. And also a fairly
> short animation, in fact.
> GIF as an animation format has the inherent lack of colour depth of the
> GIF images: IIRC 256 or less.
> Why not try MPG?
Aside from color count I think they can look pretty good because of
sharpness. Less distorted than when another, lossy, format is used. File
size is not easy to keep as low as MPG or AVI or MOV though.
Also, most controversial thing might be explained at:
http://burnallgifs.org/
I have never even looked at the parametric object before, will now. I see
it can apparently do a helical shape in your animation.
Bob H.
Post a reply to this message
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Bob,
I visited that website you pointed out. Very interesting. Have you tried the
.mng format? Am I correct in assuming it is mainly for use in web pages? Is
it supported by the majority of browsers?
Steve Shelby
Bob H. <omn### [at] msncom> wrote in message
news:3b18de19@news.povray.org...
> "Sander" <san### [at] stolscom> wrote in message
> news:MPG### [at] NEWSPOVRAYORG...
> > In article <3b182220@news.povray.org>, david sharp says...
> > > I think this is the first time I ever posted any animation,
> > > and I don't know if GIF is frowned upon for some
> > > reason (I mean since I see few here).
> > >
> > It is cute: but difficult to visualize what happens. And also a fairly
> > short animation, in fact.
> > GIF as an animation format has the inherent lack of colour depth of the
> > GIF images: IIRC 256 or less.
> > Why not try MPG?
>
> Aside from color count I think they can look pretty good because of
> sharpness. Less distorted than when another, lossy, format is used. File
> size is not easy to keep as low as MPG or AVI or MOV though.
> Also, most controversial thing might be explained at:
> http://burnallgifs.org/
>
> I have never even looked at the parametric object before, will now. I see
> it can apparently do a helical shape in your animation.
>
> Bob H.
>
>
Post a reply to this message
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"sshelby" <ssh### [at] rexnetnet> wrote in message
news:3b1a75fd@news.povray.org...
> I visited that website you pointed out. Very interesting. Have you tried
the
> .mng format? Am I correct in assuming it is mainly for use in web pages?
Is
> it supported by the majority of browsers?
I've known little of the existence of MNG really. Surprising to me that
it's been around, as a concept at least, for a couple years or more.
Checking into it just now I see that Alchemy Mindworks has a program for
making them. I got one of their programs many years ago, Graphic Workshop,
and also tried out their GIF Construction Set too. Now this new PNG/MNG
Construction Set sounds real good.
http://www.mindworkshop.com/alchemy/pngpro.html
I wouldn't say it's purpose is for web pages alone anyway, except that
there's the intention for web browsers to incorporate it someday so maybe it
will become more popular through that. In fact Netscape already has. Check
this: http://www.3-t.com/3-T/products/emngma/MNGbrowsers.html
Got to say that I've been shuffling along with MPG files so long, and AVI
before that, that I feel behind the times concerning this. If animation
encoding output directly (or semi-directly) from POV-Ray (4.0?) were ever to
be done then MNG is probably the answer.
Bob H.
Post a reply to this message
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Bob,
Thank you for the info. Wow, the more I think I know, the more I find out
that I don't know!
Steve
Bob H. <omn### [at] msncom> wrote in message
news:3b1b1078@news.povray.org...
> "sshelby" <ssh### [at] rexnetnet> wrote in message
> news:3b1a75fd@news.povray.org...
> > I visited that website you pointed out. Very interesting. Have you tried
> the
> > .mng format? Am I correct in assuming it is mainly for use in web pages?
> Is
> > it supported by the majority of browsers?
>
> I've known little of the existence of MNG really. Surprising to me that
> it's been around, as a concept at least, for a couple years or more.
> Checking into it just now I see that Alchemy Mindworks has a program for
> making them. I got one of their programs many years ago, Graphic
Workshop,
> and also tried out their GIF Construction Set too. Now this new PNG/MNG
> Construction Set sounds real good.
> http://www.mindworkshop.com/alchemy/pngpro.html
>
> I wouldn't say it's purpose is for web pages alone anyway, except that
> there's the intention for web browsers to incorporate it someday so maybe
it
> will become more popular through that. In fact Netscape already has.
Check
> this: http://www.3-t.com/3-T/products/emngma/MNGbrowsers.html
>
> Got to say that I've been shuffling along with MPG files so long, and AVI
> before that, that I feel behind the times concerning this. If animation
> encoding output directly (or semi-directly) from POV-Ray (4.0?) were ever
to
> be done then MNG is probably the answer.
>
> Bob H.
>
>
Post a reply to this message
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"sshelby" <ssh### [at] rexnetnet> wrote in message
news:3b1b8824$1@news.povray.org...
> Bob,
> Thank you for the info. Wow, the more I think I know, the more I find out
> that I don't know!
Well Steve, all, I tried out the PNG/MNG Construction Set and got a file
size 10 times larger than the MPG form of an animation I made recently. Not
good. Sure, it did look good, but I was hoping for much smaller file sizes.
Oh, but that's not the end of it I guess. If I were to buy the program
it'll allow for Supercompress to shrink the file down, just that I don't
know by how much.
I won't give up on MNG though anyhow.
PS to Steve :-)
Hope you realize you are e-mailing me too when replying here.
Bob H.
Post a reply to this message
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That's not necessarily true. GIF animations are limited to 256 colors, but
there are some excellent programs that dither the images so well you can
hardly tell that they're only 256 color. GIF Movie Gear, for instance. I use
it for all my GIF animations: www.gamani.com will get you a 30-day
fully-functional demo of it. You just have to set a few things in
Preferences and it looks almost like 24-bit color.
"Sander" <san### [at] stolscom> wrote in message
news:MPG### [at] NEWSPOVRAYORG...
> In article <3b182220@news.povray.org>, david sharp says...
> > I think this is the first time I ever posted any animation,
> > and I don't know if GIF is frowned upon for some
> > reason (I mean since I see few here).
> > .
> > Its a 'complex surface' rotating through 4-d space.
> > The function is f(z)= z^1/3. So the four dimensions
> > come from mapping u,v (one complex number) to x,y
> > (another complex number). That is, (u,v) -> (x,y)=(u+iv)^1/3 .
> > Made with the MegaPov "parametric{}" object.
> >
> It is cute: but difficult to visualize what happens. And also a fairly
> short animation, in fact.
> GIF as an animation format has the inherent lack of colour depth of the
> GIF images: IIRC 256 or less.
> Why not try MPG?
> --
> Regards, Sander
Post a reply to this message
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It's generally not a good idea to post GIF anims here- some people can't
view them- but it's a very cool animation... reminds me of an octopus for
some reason ;-)
"david sharp" <dav### [at] rcncom> wrote in message
news:3b182220@news.povray.org...
> I think this is the first time I ever posted any animation,
> and I don't know if GIF is frowned upon for some
> reason (I mean since I see few here).
> .
> Its a 'complex surface' rotating through 4-d space.
> The function is f(z)= z^1/3. So the four dimensions
> come from mapping u,v (one complex number) to x,y
> (another complex number). That is, (u,v) -> (x,y)=(u+iv)^1/3 .
> Made with the MegaPov "parametric{}" object.
>
>
>
Post a reply to this message
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