[Heh! *loved* the POV-Ray registration key thread! ;-)

I was thinking the other day that it would be handy to have a set of ten or
fifteen general purpose media "clouded skies" (or hazy skies for that
matter), sort of like there are predefined sky_sphere objects. I am in the
midst of generating some concept art (I may post one in .binaries) and as it
is a flying vehicle the sky is important. :-)

I don't have any experience with media, so I don't know if this is even
possible, but if anyone can post a ready made atmosphere with clouds that I
could use in my scenes tha twould be great. Alternatively, is there a good
tutorial site with some examples?

Jon

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> I don't have any experience with media, so I don't know if this is even
> possible, but if anyone can post a ready made atmosphere with clouds that
I
> could use in my scenes tha twould be great. Alternatively, is there a good
> tutorial site with some examples?

I've recently uploaded a Project Review of "A Rose", which was an image for
my girlfried. Though I can't provide you with the source, the modelling is
explained pretty much in detail to give you something to start with. Just
look here:
http://www.nolights.de/past_pros/rose/rose.html#Clouds

Then there's Gilles Tran's MakeCloud, which you can find here:
http://www.oyonale.com/ressources/english/sources13.htm

That should get you started.

Regards,
Tim

-- 
"Tim Nikias v2.0"
Homepage: <http://www.nolights.de>

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"Tim Nikias v2.0" <#macro timnikias (@) #local = "gmx.net" #end> wrote in
message
>
> I've recently uploaded a Project Review of "A Rose", which was an image
for
> my girlfried. Though I can't provide you with the source, the modelling is
> explained pretty much in detail to give you something to start with. Just
> look here:
> http://www.nolights.de/past_pros/rose/rose.html#Clouds
>
> Then there's Gilles Tran's MakeCloud, which you can find here:
> http://www.oyonale.com/ressources/english/sources13.htm

Thanks. THis will help a lot.

Jon

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> Then there's Gilles Tran's MakeCloud, which you can find here:
> http://www.oyonale.com/ressources/english/sources13.htm
>
> That should get you started.

This is excellent stuff.

I've run into a bit of a snag, however. I'm trying to place an aircraft in
the scene. It was modeled in Moray. Z axis "up". Pretty much resides at the
origin. I have tried placing the aircraft in the scene:
MakeCloud2_demo_rain.pov. The camera in that demo file is:

//---------------------------------------
// Camera
//---------------------------------------
camera {
  location  <0, 0, 0>
  direction z
  sky y+x*0.02 // slight tilt of the camera!
  right     image_width/image_height*x
  look_at   z*1000
  rotate x*-5
  translate y*1000
}

This seems to tell me that the camera is at <0,1000,0> - which is 1000 units
(feet? meters?) above ground, and angled slightly up (or down?). The Y axis
here appears to be "up". In order to move my aircraft into view, I tried
adding this into the demo file at the bottom:

{
  ...
  /// my_aircraft_definition ///
  ...
  translate <0,1100,1000>
}

However, nothing ever showed up in the resulting image.

Any ideas?

Jon

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40d64cde$1@news.povray.org...
> {
>   ...
>   /// my_aircraft_definition ///
>   ...
>   translate <0,1100,1000>
> }
>
> However, nothing ever showed up in the resulting image.
>
> Any ideas?
>
> Jon
>
>
Hi,
I rendered MakeCloud2_demo_rain.pov (with clouds switched off) with a sphere
at <0,1100,1000>.
It perfectly shows in the middle of  the image.
Did you try switching off the clouds just to see if the plane is not hidden
by them?
Didn't you rotate your plane *after* translation?

There are mere suggestion


Marc

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"Marc Jacquier" <nos### [at] wanadoofr> wrote in message

> Hi,
> I rendered MakeCloud2_demo_rain.pov (with clouds switched off) with a
sphere
> at <0,1100,1000>.
> It perfectly shows in the middle of  the image.

Oh, good ... so I had the right idea, anyhow. :-)

> Did you try switching off the clouds just to see if the plane is not
hidden
> by them?

This is a good idea. How does one turn off the clouds?

> Didn't you rotate your plane *after* translation?

No, here's what I did:

union { // Aircraft
  object { LeftLowerWinglet }
  object { RightUpperWinglet }
  object { RightInboardEngineSupport }
  object { LeftInboardEngineSupport }
  object { RightWing }
  object { LeftWing }
  object { LeftUpperWinglet }
  object { Rb211M524M1lMmaster }
  ...
  ...
  object { RightLowerWinglet }
  rotate -90.0*x      // I also tried commenting out this line, but it
didn't help
  translate <0,1100,1000>
}

Jon

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"Jon Berndt" <jsb### [at] hal-pcdotorg> wrote in message

> This is a good idea. How does one turn off the clouds?

Never mind. This line gave me a clue:

#declare CloudOK=1; // clouds on=1

:-)

Jon

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news:40d6b90f$1@news.povray.org...

>   rotate -90.0*x      // I also tried commenting out this line, but it
> didn't help

What is the size of the plane in pov-ray units? The scale of these scenes is
(more or less) in metres so that you're basically seeing it from 1 km if you
put it at z*1000. "My object doesn't show up" problems are sometimes due to
the fact that the imported objects are much too small to be seen because
they're just a speck on the background.

G.

-- 

**********************
http://www.oyonale.com
**********************
- Graphic experiments
- POV-Ray and Poser computer images
- Posters

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"Gilles Tran" <tra### [at] inapginrafr> wrote in message

> What is the size of the plane in pov-ray units? The scale of these scenes
is
> (more or less) in metres so that you're basically seeing it from 1 km if
you
> put it at z*1000. "My object doesn't show up" problems are sometimes due
to
> the fact that the imported objects are much too small to be seen because
> they're just a speck on the background.

Yes, I think this had something to do with it. I turned off clouds and there
it was, right where I thought it would be. I also forgot that POV uses a
left hand coordinate system. The flying vehicle was created using feet as
the unit of measure, so I'll have to keep that in mind when placing it in
the scene, but actually all looks very good right now. I'm getting ready to
start up a full render before I go to work, and when I get home maybe it
will be done.

Thanks. By the way, the MakeCloud stuff is very helpful, and I think I've
barely even seen all it can do. Really nice work you've done.

Jon

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