Gail Shaw wrote:
> 
> An idea I got after looking at some screenshots of myst 3
> 
> The water is heavily based on Christoph's rmf water from
> his scene "Water Tunnel". The sun is a clear sphere with
> fade_distance and fade_colour with a 5*5 area light

Looks good, i recalled having seen some scene with similar atmosphere from
you and found it in the 'Wilderness' IRTC round. 

I was already planning a sunset version of my current scene, but it will
be awfully slow to develop things...  

The RMF shows the typical effect of being quite flat between the ridges,
something usually decreasing realism a lot IMO. I tried to avoid this by
making it stronger.  

> 
> I'm planning to add some thin clouds across the sun.
> 

I think that would look very good.

> Anyone got any suggestions on the water. I like it except
> that close up it looks like rough concrete covered with
> gold leaf. I'm experimenting with hetero mf to see if that
> looks any better

That would be interesting to see, i never tried heteroMF for water.  For
the water's color I think it would be quite important to make the sky less
uniform, during sunset, it should be much darker and more blue on the
opposite side and that would be visible in the reflections.  

> 
> Render time 30 hours.
> 

Sounds awfully slow for without radiosity.

Christoph

-- 
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other 
things on: http://www.schunter.etc.tu-bs.de/~chris/

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Christoph Hormann <chr### [at] gmxde> wrote in message
news:3B123A2B.2639948C@gmx.de...
>
> Looks good, i recalled having seen some scene with similar atmosphere from
> you and found it in the 'Wilderness' IRTC round.

Yup, lake and mountains, done with vue d'espirit. I love sunsets

>
> That would be interesting to see, i never tried heteroMF for water.

I'll have a go tonight with heteroMF and no area light and I'll post the
results tomorrow.

> For
> the water's color I think it would be quite important to make the sky less
> uniform, during sunset, it should be much darker and more blue on the
> opposite side and that would be visible in the reflections.

It's currently varying from orange to light blue. Will tweak that.

> >
> > Render time 30 hours.
> >
>
> Sounds awfully slow for without radiosity.

Guess arealights and multifractals don't work well together.

Gail
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Gail Shaw wrote:
> 
> >
> > Sounds awfully slow for without radiosity.
> 
> Guess arealights and multifractals don't work well together.
> 

Then removing the area light would probably help a lot, i don't see much
area light shadows here anyway (or is there an additional fill light). 

Christoph

-- 
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other 
things on: http://www.schunter.etc.tu-bs.de/~chris/

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Christoph Hormann <chr### [at] gmxde> wrote in message
news:3B1258CC.407F1BEE@gmx.de...
>
>
> Then removing the area light would probably help a lot, i don't see much
> area light shadows here anyway (or is there an additional fill light).
>

No fill light. Without area the rock on the left has a very sharp shadow
and looked really wrong. I might have overdone the area light however.

Gail
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* gsh### [at] monotixcoza                *   Step into the abyss,           *
* http://www.rucus.ru.ac.za/~gail/   *   and let go.        Babylon 5   *
*************************************************************************
* The difficult we do immediately, the impossible takes a little longer *
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Love the idea and  composition.  Colors are lovely.  Yes the water and rock
textures need some honing. Do you know what is causing the banding in the
lower part of the sun?  I am having problems wtth similar banding in my
current scene and I want it outta there.
/jc

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>
>Love the idea and  composition.  Colors are lovely.  Yes the water and rock
>textures need some honing. Do you know what is causing the banding in the
>lower part of the sun?  I am having problems wtth similar banding in my
>current scene and I want it outta there.

maybe its the fog (or media) you used to blur the horizon line? If so, you
could put it lower.

Louis

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Firstly I tried with heteroMF. I don't think much needs
saying except that it looks terrible.

HeteroMF settings were
 function{"heteroMF",<0.07, 2.2, 7, 0.6, 0.5>}

The second picture is a partial rendering
with ridgedMF, using the settings that
Marc-Hendrik Bremer posted

That has promice, if I could only get the ridges closer
together

RMF settings were
function {"ridgedmf", <0.1, 3.0, 7, 0.7, 0.7>}

Both images use the same material for the water.

Comments?

Gail
*************************************************************************
* gsh### [at] monotixcoza                *   Step into the abyss,           *
* http://www.rucus.ru.ac.za/~gail/   *   and let go.        Babylon 5   *
*************************************************************************
* The difficult we do immediately, the impossible takes a little longer *
*************************************************************************

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Attachments:
Download 'OceanGateHetero.jpg' (37 KB) Download 'OceanGateRidged.jpg' (13 KB)

Preview of image 'OceanGateHetero.jpg'

Preview of image 'OceanGateRidged.jpg'

Gail Shaw wrote:
> 
> Firstly I tried with heteroMF. I don't think much needs
> saying except that it looks terrible.
> 
> HeteroMF settings were
>  function{"heteroMF",<0.07, 2.2, 7, 0.6, 0.5>}

I'm not sure if heteroMF is suited for water at all, but how did you come
to these values.  Have you tried some different settings?

In the picture it also seems to have a very fine structure, maybe some
larger horizontal scaling would help too.

> 
> The second picture is a partial rendering
> with ridgedMF, using the settings that
> Marc-Hendrik Bremer posted
> 
> That has promice, if I could only get the ridges closer
> together
> 
> RMF settings were
> function {"ridgedmf", <0.1, 3.0, 7, 0.7, 0.7>}
> 

These are the same values i use very often (also used in my water
tutorial) I recently also tried:

function{"ridgedMF",<0.07, 2.2, 7, 0.6, 0.9>}  

Christoph

-- 
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other 
things on: http://www.schunter.etc.tu-bs.de/~chris/

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Christoph Hormann <chr### [at] gmxde> wrote in message
news:3B13DFA4.42ADA6DE@gmx.de...
>
> I'm not sure if heteroMF is suited for water at all, but how did you come
> to these values.  Have you tried some different settings?

They were tha same values I used for rmf except the last one. That
I guessed. Problem is I don't understand what the parameters do. I've
read the mega helf several times, but it doesn't really help.

I'll try some other values when I get time. That pic took 4 and a half hours
(Over twice what RMF took)

>
> These are the same values i use very often (also used in my water
> tutorial) I recently also tried:
>
> function{"ridgedMF",<0.07, 2.2, 7, 0.6, 0.9>}
>

Thanks, I'll give that a try. If I change the water material to a
solid pigment it might render fast enough for some experimentation.

Gail
*************************************************************************
* gsh### [at] monotixcoza                *   Step into the abyss,           *
* http://www.rucus.ru.ac.za/~gail/   *   and let go.        Babylon 5   *
*************************************************************************
* The difficult we do immediately, the impossible takes a little longer *
*************************************************************************

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Christoph Hormann wrote:
> 
> These are the same values i use very often (also used in my water
> tutorial) I recently also tried:
> 
> function{"ridgedMF",<0.07, 2.2, 7, 0.6, 0.9>}
> 

Just saw i already posted these to p.t.s-f.  

For heteroMF maybe try:

function{"heteroMF",<0.8, 2.3, 7, 0.2, 0.5>} 

and a larger scaling (~*6)

of from a megapov sample scene: 
function{"heteroMF",<1.0, 2.0, 5, 0.0, 0.0>} 

Christoph

-- 
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other 
things on: http://www.schunter.etc.tu-bs.de/~chris/

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