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Arttu Voutilainen <blizzara.REM0VE7H!S### [at] zbxt SP4MM3Rnet> wrote:
> So, any comments, critiques, anything?
The sails still need a bit of work. It's textile, so maybe a bit of
transmittance might work. Anyway it needs some more texturing.
That said - impressive shot; a well invested day of rendering time!
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I liked your original, and now it's looking even better!
I was wondering about the main water waves: Since I can't really see what they
look like on the 'other side' of the boat, I'd suggest ending the current water
object AT the boat (as seen from the camera), then making a 'mirror image' of
the wave object for the far side of the water. That way, the boat will appear
to be cutting through the water, leaving angled wakes on BOTH sides of its bow.
The other thing I might critique is that the water waves seem to be at too much
of a right angle to the boat's direction. Perhaps that's just the camera
angle; but I think they should fanning out from the boat at maybe 45-degrees or
less--in other words, the wave direction being a bit closer to parallel with the
boat's hull (although NOT parallel, of course.)
Ken W.
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I've looked at this image several times now and I think I agree with the
others that the curve in the waves is unusual/distracting. If they
represent waves on the sea then they shouldn't curve like that. They
should probably remain parallel or curve the other way (based on
interference as they enter the bay). If this is a wake from the ship
then the waves should fan out at a 45 degree angle as Kenneth suggests.
I think the problem I'm having is coming up with a reasonable
explanation for the curvature of the wave pattern. It's almost like a
speed-boat just passed through the scene from right to left... an
explanation which seems out of place given the other elements you present...
Love the scene. Looking forward to future iterations.
A wise person (Kenneth) once said......
> I liked your original, and now it's looking even better!
>
> I was wondering about the main water waves: Since I can't really see what they
> look like on the 'other side' of the boat, I'd suggest ending the current water
> object AT the boat (as seen from the camera), then making a 'mirror image' of
> the wave object for the far side of the water. That way, the boat will appear
> to be cutting through the water, leaving angled wakes on BOTH sides of its bow.
>
> The other thing I might critique is that the water waves seem to be at too much
> of a right angle to the boat's direction. Perhaps that's just the camera
> angle; but I think they should fanning out from the boat at maybe 45-degrees or
> less--in other words, the wave direction being a bit closer to parallel with the
> boat's hull (although NOT parallel, of course.)
>
> Ken W.
>
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Really improving indeed. Very nice view.
The waves, like others already said, need more thought. Are they coming from
the sea (at right)? Then they should curve the other way round due to the
interference with the shallowing sea bottom which slows them down. They are
obviously not the wake of the ship as they are also present in front of it.
A slight wake (45 degrees) should be nice to add in that respect.
Thomas
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The scene is peacefully, beautiful.
Regarding the waves, we don't see what if you have imagined at the left
(a shore? the mouth of a river?), they are a bit unusual but I like them.
Tee boat (as Warp notes) compared with the overall scene (trees, water,
...) needs perhaps some details.
;-)
Paolo
>Arttu Voutilainen on date 07/03/2009 20:02 wrote:
> I think this one is starting to look pretty good. Since last version
> I've changed the texture on the trees, fixed the problem I had with
> media and turned water-plane into an isosurface.
>
> Took 25h 30min to render with pov3.7-b29 on AMD64 3500+.
>
> So, any comments, critiques, anything?
>
> -- Arttu "Blizzara" Voutilainen
> -- http://blizzara.zbxt.net:8000/Plone/
>
>
> ------------------------------------------------------------------------
>
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Thomas de Groot nous illumina en ce 2009-03-09 05:48 -->
> Really improving indeed. Very nice view.
>
> The waves, like others already said, need more thought. Are they coming from
> the sea (at right)? Then they should curve the other way round due to the
> interference with the shallowing sea bottom which slows them down. They are
> obviously not the wake of the ship as they are also present in front of it.
> A slight wake (45 degrees) should be nice to add in that respect.
>
> Thomas
>
>
The 45 degree angle is the angle for a precise speed, twice the speed of the
waves in the water for a given depth. The wake angle depend on the speed of the
ship trough the water and the depth.
Here, it's like there is something like a water fall somewhere to the left. In
that case, there should be some foam on the water.
--
Alain
-------------------------------------------------
Episcopalian: It's not so bad if shit happens, as long as you serve the right
wine with it.
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"Alain" <ele### [at] netscapenet> schreef in bericht
news:49b5d871$1@news.povray.org...
>>
> The 45 degree angle is the angle for a precise speed, twice the speed of
> the waves in the water for a given depth. The wake angle depend on the
> speed of the ship trough the water and the depth.
Ah! You know more about this than I do, obviously :-) Didn't know that.
Thomas
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Thomas de Groot nous illumina en ce 2009-03-10 05:17 -->
> "Alain" <ele### [at] netscapenet> schreef in bericht
> news:49b5d871$1@news.povray.org...
>> The 45 degree angle is the angle for a precise speed, twice the speed of
>> the waves in the water for a given depth. The wake angle depend on the
>> speed of the ship trough the water and the depth.
>
> Ah! You know more about this than I do, obviously :-) Didn't know that.
>
> Thomas
>
>
Simple observation.
When a row boat advance, the wake is very broad, 60 to 90 degrees and can detach
from the bow (go faster than the boat).
When you watch a speed boat, the wake is perty sharp, maybe around 15 degrees or
even less if you go fast enough.
On a cruise ship going at cruise speed, the width of the wake from the bow at
the stern level is MUCH narrower than the length ot the ship.
--
Alain
-------------------------------------------------
Caught Asleep At Your Work Desk
Just in case your boss catches you asleep at your desk, be ready to blurt out
this excuse #1: I was working smarter - not harder.
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"Alain" <ele### [at] netscapenet> schreef in bericht
news:49b6de92$1@news.povray.org...
> Simple observation.
>
> When a row boat advance, the wake is very broad, 60 to 90 degrees and can
> detach from the bow (go faster than the boat).
>
> When you watch a speed boat, the wake is perty sharp, maybe around 15
> degrees or even less if you go fast enough.
>
> On a cruise ship going at cruise speed, the width of the wake from the bow
> at the stern level is MUCH narrower than the length ot the ship.
>
I probably never paid really attention when on water (which has not been
that often) and from shore you have to be at a certain altitude I suppose to
really appreciate the effect. I shall note this down for later use. Thanks
for this!
Thomas
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CShake wrote:
> Arttu Voutilainen wrote:
>> I think this one is starting to look pretty good. Since last version
>> I've changed the texture on the trees, fixed the problem I had with
>> media and turned water-plane into an isosurface.
>>
>> Took 25h 30min to render with pov3.7-b29 on AMD64 3500+.
>>
>> So, any comments, critiques, anything?
>>
>> -- Arttu "Blizzara" Voutilainen
>> -- http://blizzara.zbxt.net:8000/Plone/
>>
>>
>> ------------------------------------------------------------------------
>>
> Very nice water (texture, reflection, basic shape)!
Thanks!
> One thing I'd suggest is making the water interact with the shore a
> little more, right now it just seems to flatten out at the edges. With
> real water, the height of the wave above the neutral surface plane
> changes with the depth, with waves slowing down and getting both taller
> and thinner as they reach the shore. Right at the shore they may break
> if the seabed has a shallow angle, though maybe not with waves this small.
>
Yeah, I know. I thought about that, but I wasn't sure how water was
supposed to function at the shore. Also I was happy to get it work the
way it does now (flattening out at the edges) so I let it be. I guess
I'll try to fix the waves first and the have a look at this.
> Similarly the waves seem to remain the same height as they go to the
> horizion - usually at that distance various frictional losses and such
> in the water will make the ripples decay, which doesn't seem to happen.
>
> Think about what is causing the waves, where is it and is it really
> making such uniform disturbances?
Well, it was actually supposed to be wind (I know it doesn't look like
that).
-- Arttu "Blizzara" Voutilainen
-- http://blizzara.zbxt.net:8000/Plone/
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