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From: Ben T Scheele
Subject: Note: May do Groovy Things to Your Eyes (473 kb)
Date: 12 Dec 2002 01:44:49
Message: <3df83061@news.povray.org>
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Hey all,
Jamie Davison's recent animation got me thinking that it would be
pretty easy to make animations using my dfield plotter. The direction and
scale of the cones are determined by the function value at that point. They
are not translating at all, just like in Jamie's animation. The functions
are sums and differences of sin, cos, and tan functions which have a clock
variable affecting either the amplitude or the frequency. It surprised me
that it made some kinds of waves and vortices. I'm going to have to explore
this a lot more. How do you like it?
-Ben Scheele
Post a reply to this message
Attachments:
Download 'dfield anim.mpg' (474 KB)
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That reminds me of an animation I did of cones moving according to pov's
vturbulence() function, and by offsetting the turbulence over time I got a
pretty good effect for blades of grass moving in the wind! I can't remember
if I posted the animation though...
Anyway, your animation's very nice. I suggest trying some more complicated
functions. BTW, how does it decide what colour to use?
--
Tek
http://www.evilsuperbrain.com
"Ben T. Scheele" <sch### [at] tc umnedu> wrote in message
news:3df83061@news.povray.org...
> Hey all,
>
> Jamie Davison's recent animation got me thinking that it would be
> pretty easy to make animations using my dfield plotter. The direction and
> scale of the cones are determined by the function value at that point.
They
> are not translating at all, just like in Jamie's animation. The functions
> are sums and differences of sin, cos, and tan functions which have a clock
> variable affecting either the amplitude or the frequency. It surprised me
> that it made some kinds of waves and vortices. I'm going to have to
explore
> this a lot more. How do you like it?
>
> -Ben Scheele
>
>
>
Post a reply to this message
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From: Ben T Scheele
Subject: Re: May do Groovy Things to Your Eyes (473 kb)
Date: 12 Dec 2002 11:40:43
Message: <3df8bc0b@news.povray.org>
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"Tek" wrote in message:
> That reminds me of an animation I did of cones moving according to pov's
> vturbulence() function,
I think I might have seen that. At least something like it. It's a cool
idea.
> Anyway, your animation's very nice.
Thanks
> I suggest trying some more complicated
> functions.
I surely will
> BTW, how does it decide what colour to use?
here's how:
...
#declare theta = atan(y_prime/x_prime);
#declare rot = degrees(theta);
#declare col = rot/90;
...
pigment{ rgb <.75+col,.4,.75-col> }
...
-Ben Scheele
Post a reply to this message
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