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"Ross" <rli### [at] everestkc net> schreef in bericht
news:422dc8e0$1@news.povray.org...
> wow! that's an amazing improvement over the last one.
Thank you :)
> My only feeling is
> that the top isn't dense enough.
the top is the most difficult part
> that is one fine looking explosion.
:)
I really hope I can animate it
cu!
--
ZK AKA Gaeriel
http://www.povplace.be.tf
"Lighting is important. Just like in that movie: Silence Of The Sheep."
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"Tom Melly" <pov### [at] tomandlu co uk> schreef in bericht
news:422dcb9d@news.povray.org...
> Nice - looks small, but that's okay. Sort of like the nuke explosion in T3
> when arnie throws the damaged power-pack out of the van...
hmm, what is it that makes it looks small? The background?
cu!
--
ZK AKA Gaeriel
http://www.povplace.be.tf
"I am Oobedoob Benubi. I have the silliest name in the galaxy."
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"Zeger Knaepen" <zeg### [at] student kuleuven ac be> wrote in message
news:422dd3c6@news.povray.org...
> "Tom Melly" <pov### [at] tomandlu co uk> schreef in bericht
> news:422dcb9d@news.povray.org...
> > Nice - looks small, but that's okay. Sort of like the nuke explosion in
T3
> > when arnie throws the damaged power-pack out of the van...
>
> hmm, what is it that makes it looks small? The background?
I think mainly that I'm making an assumption about the scale of both the
background (mainly the mesa on the left), and the ground-objects.
Also, something about the smoke gives an impression of the scale.
I find it hard to pin it down exactly, but basically my brain keeps telling
me that it's about 80ft high...
You could try rendering it on a featureless plain and re-posting - that
might give an idea as to whether the assumed scale is a product of the
scenery or something intrinsic to the explosion.
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"Tom Melly" <pov### [at] tomandlu co uk> schreef in bericht
news:422ddf78@news.povray.org...
> I think mainly that I'm making an assumption about the scale of both the
> background (mainly the mesa on the left), and the ground-objects.
>
> Also, something about the smoke gives an impression of the scale.
>
> I find it hard to pin it down exactly, but basically my brain keeps
telling
> me that it's about 80ft high...
after some more research, I think I know what's the problem: as someone
already mentioned, the smoke, dust and fire isn't dense enough to make it
look big. Also the dust-shockwave needs more detail, more structure, and it
should be bigger.
cu!
--
ZK AKA Gaeriel
http://www.povplace.be.tf
"I plan to live forever! ... or die trying..."
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> hmm, what is it that makes it looks small? The background?
Excessive detail in the background makes it look like a model.
Note that the cloud does not look that way, but the background does.
Try putting the background away at a proper distance, scaling it up
appropriately, then a little focal blur.
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Excellent! The improvement from the last version is radical.
Congrats,
Fernando.
Zeger Knaepen wrote:
> slightly better shape, and a better background :)
> but it took 10 minutes to trace this time
>
> cu!
>
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"Fernando G. del Cueto" <fcu### [at] yahoo com> wrote in message
news:422e15a3$1@news.povray.org...
> Excellent! The improvement from the last version is radical.
>
> Congrats,
Thank you! :)
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.be.tf
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The right honourable Zeger Knaepen spake:
> "Stefan Viljoen" <ryl### [at] polard com> schreef in bericht
> news:422d380b@news.povray.org...
>> The right honourable Zeger Knaepen spake:
>>
>> > slightly better shape, and a better background :)
>> > but it took 10 minutes to trace this time
>> >
>> > cu!
>>
>> Wow... how DID you do that?!
>
> :)
> 9500 spheres arranged in a mushroom-shape (with a lot of while-loops of
> course :)) and seperated into a couple of categories: smoke, dust and 3
Interesting. The only problem is that if -I- tried it it would still look
like 9500 spheres.... not a very realistic nuclear detonation.
:0
But that's just me!
Keep it up - how about trying a fuel-air explosion next?
Kind regards,
--
---
Stefan Viljoen
Software Support Technician / Programmer
Polar Design Solutions
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Hi,
A lot of the appearance depends on how long it is from detonation.
http://www.cddc.vt.edu/host/atomic/nukeffct/enw77b1.htm
States:
2.05 The surface temperatures of the fireball, upon which the brightness (or
luminance) depends, do not vary greatly with the total energy yield of the
weapon. Consequently, the observed brightness of the fireball in an air
burst is roughly the same, regardless of the amount of energy released in
the explosion. Immediately after its formation the fireball begins to grow
in size, engulfing the surrounding air. This growth is accompanied by a
decrease in temperature because of the accompanying increase in mass. At the
same time, the fireball rises, like a hot-air balloon. Within seven-tenths
of a millisecond from the detonation, the fireball from a 1-megaton weapon
is about 440 feet across, and this increases to a maximum value of about
5,700 feet in 10 seconds. It is then rising at a rate of 250 to 350 feet per
second. After a minute, the fireball has cooled to such an extent that it no
longer emits visible radiation. It has then risen roughly 4.5 miles from the
point of burst.
and continues to describe color effects etc ...
DLM
"Zeger Knaepen" <zeg### [at] student kuleuven ac be> wrote in message
news:422d0f41@news.povray.org...
> slightly better shape, and a better background :)
> but it took 10 minutes to trace this time
>
> cu!
> --
> ZK AKA Gaeriel
> http://www.povplace.be.tf
> "Luckyly they included a button, right here, that'll blow the entire thing
> up!"
>
>
>
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"dlm" <me### [at] address invalid> wrote in message news:4238a729$1@news.povray.org...
> Hi,
> A lot of the appearance depends on how long it is from detonation.
> http://www.cddc.vt.edu/host/atomic/nukeffct/enw77b1.htm
> States:
>
> 2.05 The surface temperatures of the fireball, upon which the brightness (or
> luminance) depends, do not vary greatly with the total energy yield of the
> weapon. Consequently, the observed brightness of the fireball in an air
> burst is roughly the same, regardless of the amount of energy released in
> the explosion. Immediately after its formation the fireball begins to grow
> in size, engulfing the surrounding air. This growth is accompanied by a
> decrease in temperature because of the accompanying increase in mass. At the
> same time, the fireball rises, like a hot-air balloon. Within seven-tenths
> of a millisecond from the detonation, the fireball from a 1-megaton weapon
> is about 440 feet across, and this increases to a maximum value of about
> 5,700 feet in 10 seconds. It is then rising at a rate of 250 to 350 feet per
> second. After a minute, the fireball has cooled to such an extent that it no
> longer emits visible radiation. It has then risen roughly 4.5 miles from the
> point of burst.
>
>
>
> and continues to describe color effects etc ...
hey, that's interesting! thanks!!
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.be.tf
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