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10 Aug 2024 09:17:13 EDT (-0400)
  rock formations WIP (Message 1 to 6 of 6)  
From: Reactor
Subject: rock formations WIP
Date: 26 Sep 2004 11:51:30
Message: <4156e582@news.povray.org>
A very, very WIP, it started as a test to find a viable technique to do
the things that height fields couldn't.  I have always wanted to do natural
bridges, caves, overhangs, and all sorts of different rock formations in
POV, but never really found a good way to do that sort of thing...
  As it turns out, this sort of thing can be done in Wings (if one is
patient enough as once you start getting a lot of faces, operations get
slow).
Anyway, as I said, it has a way to go, but it is nice to know the technique
has potential...

The model geometry stats were highlighted after screenshot was taken, decent
quality radiosity (but no aa) was used along with a fancy normal in POV (the
shadow-line artifact is present in quite a few spots).  Might re-run it with
soft shadows and aa, but i should probably work on actual scene elements...


Reactor


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Attachments:
Download 'rock_form_wings.jpg' (77 KB) Download 'rock_formation.jpg' (44 KB)

Preview of image 'rock_form_wings.jpg'
rock_form_wings.jpg

Preview of image 'rock_formation.jpg'
rock_formation.jpg


 

From: St 
Subject: Re: rock formations WIP
Date: 26 Sep 2004 12:08:50
Message: <4156e992@news.povray.org>
Yeah, that's looking nice. I love looking at other peoples Wings
models.

Can you not 'bridge' the arch to the main rock? Too many faces?

  ~Steve~


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From: Reactor
Subject: Re: rock formations WIP
Date: 26 Sep 2004 12:26:18
Message: <4156edaa$1@news.povray.org>
"St." <dot### [at] dotcom> wrote in message news:4156e992@news.povray.org...
> Yeah, that's looking nice. I love looking at other peoples Wings
> models.
>
> Can you not 'bridge' the arch to the main rock? Too many faces?
>
>   ~Steve~
>
>

I am not fully sure what you mean, the arch is a natural bridge... or do you
mean bridge in the wings sense of the word?

    Reactor


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From: St 
Subject: Re: rock formations WIP
Date: 26 Sep 2004 12:51:52
Message: <4156f3a8@news.povray.org>
"Reactor" <rea### [at] hotmailcom> wrote in message
news:4156edaa$1@news.povray.org...
>
> "St." <dot### [at] dotcom> wrote in message
news:4156e992@news.povray.org...
> > Yeah, that's looking nice. I love looking at other peoples Wings
> > models.
> >
> > Can you not 'bridge' the arch to the main rock? Too many faces?
> >
> >   ~Steve~
> >
> >
>
> I am not fully sure what you mean, the arch is a natural bridge...
or do you
> mean bridge in the wings sense of the word?

    Yes, sorry, the wings 'bridge' command. If you can move the arch
enough, the end of the arch will have many faces, so you delete all
the lines to leave one flat face with a certain amount of vertices.
Then, you do the same to the main rock, hopefully leaving the same
amount of vertices. Select both faces, and hit 'bridge' in the command
menu. You can then select your arch vertices and move them towards the
main rock and fiddle around with it at the 'seam' as it were.

     Either that, or delete your arch and 'grow' a new one out of the
main rock. Whichever is easiest.  ;)

    I'm sorry, I wouldn't be so picky, but it just sticks out a mile
for me. But an excellent idea, nonetheless... Thanks.

    Looking forward to seeing some more of this idea.

     ~Steve~


>
>     Reactor
>
>
>


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From: Reactor
Subject: Re: rock formations WIP
Date: 26 Sep 2004 13:08:23
Message: <4156f787$1@news.povray.org>
"St." <dot### [at] dotcom> wrote in message news:4156f3a8@news.povray.org...

>     Yes, sorry, the wings 'bridge' command. If you can move the arch
> enough, the end of the arch will have many faces, so you delete all
> the lines to leave one flat face with a certain amount of vertices.
> Then, you do the same to the main rock, hopefully leaving the same
> amount of vertices. Select both faces, and hit 'bridge' in the command
> menu. You can then select your arch vertices and move them towards the
> main rock and fiddle around with it at the 'seam' as it were.
>
>      Either that, or delete your arch and 'grow' a new one out of the
> main rock. Whichever is easiest.  ;)
>
>     I'm sorry, I wouldn't be so picky, but it just sticks out a mile
> for me. But an excellent idea, nonetheless... Thanks.
>
>     Looking forward to seeing some more of this idea.
>
>      ~Steve~


Ah, ok... yeah, the main arch does seem to stick out a bit too much.  It is
funny, I originally started modelling from a picture of a natural bridge
along a coastline which had a very long, very thin bridge to a rather
largish sea stack... which looks nothing like this.  Oh well. I might have
to try the re-bridging the bridge trick, I've been making insets and moving
them using magnet ops, sort of like a smooth extrude.  I am actually
abandoning that model, but if i weren't I'd probably make the part closest
to the main "wall" much thicker vertically, and maybe move it a bit closer.
Also, since each formation was done at different times, the harder, less
eroded rock sticks out at different levels... There is a lot that could be
done, but it seems that wings is up to it.


       Reactor


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From: St 
Subject: Re: rock formations WIP
Date: 26 Sep 2004 13:39:47
Message: <4156fee3@news.povray.org>
"Reactor" <rea### [at] hotmailcom> wrote in message
news:4156f787$1@news.povray.org...
>
> "St." <dot### [at] dotcom> wrote in message
news:4156f3a8@news.povray.org...

> >      Either that, or delete your arch and 'grow' a new one out of
the
> > main rock. Whichever is easiest.  ;)

>
> Ah, ok... yeah, the main arch does seem to stick out a bit too much.
It is
> funny, I originally started modelling from a picture of a natural
bridge
> along a coastline which had a very long, very thin bridge to a
rather
> largish sea stack... which looks nothing like this.

  It doesn't matter. That complete rock and arch could be from
anywhere around the world, so I'm not saying that it sticks out too
much, I'm saying that the seam or join between the arch and the main
rock is easily seen (to me) - it just wouldn't be there in real life.
Also, if you think about erosion, would the sea 'really' degrade that
rock like that? Maybe, maybe not. From what I remember, most holes in
weather/sea worn rocks are fairly small and round-ish in appearance.
Maybe drag a bunch of vertices down at the end of the arch and into
the main wall. Doing this in all directions might hide this entirely.

Oh well. I might have
> to try the re-bridging the bridge trick, I've been making insets and
moving
> them using magnet ops, sort of like a smooth extrude.  I am actually
> abandoning that model, but if i weren't I'd probably make the part
closest
> to the main "wall" much thicker vertically, and maybe move it a bit
closer.
> Also, since each formation was done at different times, the harder,
less
> eroded rock sticks out at different levels... There is a lot that
could be
> done, but it seems that wings is up to it.

  I think I said most of that above, but yes, wings will do it. Give
it a go.


    ~Steve~



>        Reactor


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