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Helo,
I post a new liquid animation. This time, I played with a falling tank with
water inside.
The video is MPEG1 encoded.
Regards,
Fidos
Post a reply to this message
Attachments:
Download 'tank.mpg' (693 KB)
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"fidos" <fid### [at] wanadoo fr> wrote in message
news:web.42b1c4a9449e07c368cd871b0@news.povray.org...
> Helo,
>
> I post a new liquid animation. This time, I played with a falling tank with
> water inside.
Looks good, except for the part in the beginning, I'm not sure how to describe
it, where the water should "splash" down, but instead appears to "crawl back
down" :-/
That being said, I should also mention that this is about a million times better
than what I could do :)
cu!
--
camera{location-z*3}#macro G(b,e)b+(e-b)*(C/50)#end#macro L(b,e,k,l)#local C=0
;#while(C<50)sphere{G(b,e),.1pigment{rgb G(k,l)}finish{ambient 1}}#local C=C+1
;#end#end L(y-x,y,x,x+y)L(y,-x-y,x+y,y)L(-x-y,-y,y,y+z)L(-y,y,y+z,x+y)L(0,x+y,
<.5,1,.5>,x)L(0,x-y,<.5,1,.5>,x) // ZK http://www.povplace.com
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fidos wrote:
> I post a new liquid animation. This time, I played with a falling tank with
> water inside.
Beautiful! I especially like the braking wave on the right as the tank
hits the table.
/ martin
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Beautiful simulation, but isn't there something wrong with the
refraction/ior of the water? The background looks the same when seen through
the water as it does when seen through the empty tank. I noticed the same
problem with the prior simulations, but it was not so visible, since they
were shown more from above.
Rune
--
3D images and anims, include files, tutorials and more:
rune|vision: http://runevision.com
POV-Ray Ring: http://webring.povray.co.uk
Post a reply to this message
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I hadn't checked this group for a while. I'm mesmerized by your fluid
animations. I had planned doing something similar some time ago, but due
to time constraints and the technical difficulty I never got too far.
I'm glad you're getting such awesome results. Congrats!
Fernando.
fidos wrote:
> Helo,
>
> I post a new liquid animation. This time, I played with a falling tank with
> water inside.
>
> The video is MPEG1 encoded.
>
> Regards,
> Fidos
Post a reply to this message
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> Beautiful simulation, but isn't there something wrong with the
> refraction/ior of the water?
He must have the ior set though, or else the photons wouldn't work right.
Maybe the sides of the water are coincident with the tank so that refraction
isn't working right at that part?
IMO, the only improvement this needs is splashes so that it doesn't look
like gel.
- Slime
[ http://www.slimeland.com/ ]
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Thank you all for your comments.
About the refraction mistake viewed by Rune. It's something I didn't noticed
(in fact, I checked with the fish tank I have at home...). The problem I
faced with PovRay is that I wasn't able to define with different properties
the air <-> water, air <-> glass and glass <-> water surface properties. I
made some CSG operation in order to have the ability to define glass <->
water property and I fixed it without ior (the idea was that there is no so
much difference between water and glass). I think it is the reason of the
strange effect.
Regards,
Fidos
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> The problem I
> faced with PovRay is that I wasn't able to define with different
properties
> the air <-> water, air <-> glass and glass <-> water surface properties.
The best way to do this is to simply avoid coincident surfaces. You have two
options:
1. Slightly overlap glass and water. Rays will go through air -> glass ->
glass + water -> water, and in the process will use the air ior -> glass
ior -> water ior -> water ior.
2. Leave a tiny space between glass and water. Rays will go through air ->
glass -> air -> water, and in the process will use the air ior -> glass
ior -> air ior -> water ior. If the gap is small it won't be noticeable.
You may have already done one of these.
> (the idea was that there is no so
> much difference between water and glass).
There is actually a significant difference; water's ior is 1.33 and glass is
1.5 according to the documentation. However, this doesn't explain why the
bookshelf looks the same through empty tank as it does through water.
- Slime
[ http://www.slimeland.com/ ]
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