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From: Rune
Subject: Please help me compare some grass
Date: 29 Mar 2002 19:41:12
Message: <3ca509a8@news.povray.org>
In which of these two images does the grass look more real?

1: http://rsj.mobilixnet.dk/3d/include/fgrass.jpg

2: http://rsj.mobilixnet.dk/3d/include/fgrass2.jpg

...and why? ...and what can be improved?

Thanks in advance,

Rune
--
3D images and anims, include files, tutorials and more:
Rune's World:  http://rsj.mobilixnet.dk (updated Feb 16)
POV-Ray Users: http://rsj.mobilixnet.dk/povrayusers/
POV-Ray Ring:  http://webring.povray.co.uk


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From: Mahalis
Subject: Re: Please help me compare some grass
Date: 29 Mar 2002 20:11:40
Message: <3ca510cc@news.povray.org>
The first one- there are more lights and darks (different colors of grass, shadows),
the flowers are better defined, and the grass
bits look more wavy, like real grass.

"Rune" <run### [at] mobilixnetdk> wrote in message news:3ca509a8@news.povray.org...
> In which of these two images does the grass look more real?
>
> 1: http://rsj.mobilixnet.dk/3d/include/fgrass.jpg
>
> 2: http://rsj.mobilixnet.dk/3d/include/fgrass2.jpg
>
> ...and why? ...and what can be improved?
>
> Thanks in advance,
>
> Rune
> --
> 3D images and anims, include files, tutorials and more:
> Rune's World:  http://rsj.mobilixnet.dk (updated Feb 16)
> POV-Ray Users: http://rsj.mobilixnet.dk/povrayusers/
> POV-Ray Ring:  http://webring.povray.co.uk
>
>


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From: Marc Jacquier
Subject: Re: Please help me compare some grass
Date: 29 Mar 2002 20:20:14
Message: <3ca512ce$1@news.povray.org>
I disagree: I prefer the 2nd before in the 1st, the blades bend creates a
kind of repeated pattern   and the 2nd is mor subtily random
Marc

3ca510cc@news.povray.org...
> The first one- there are more lights and darks (different colors of grass,
shadows), the flowers are better defined, and the grass
> bits look more wavy, like real grass.
>


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From: Sir Charles W  Shults III
Subject: Re: Please help me compare some grass
Date: 29 Mar 2002 21:25:04
Message: <3ca52200$1@news.povray.org>
The second image looks much better.  At first glance, it is hard to say just
why, but I think it is because the blades show the right amount of curvature
versus width.  If you had longer grass, the curvature in the first picture would
look more realistic.  An individual blade of grass is fairly stiff, and does not
usually exhibit a great deal of bending unless exposed to high winds.

Cheers!

Chip Shults
My robotics, space and CGI web page - http://home.cfl.rr.com/aichip


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From: Daniel Matthews
Subject: Re: Please help me compare some grass
Date: 29 Mar 2002 22:34:16
Message: <1235420.Lrj5Ze9zap@3-e.net>
I agree, it is the wave that puts me off the first one, I think.

Sir Charles W. Shults III wrote:

>     The second image looks much better.  At first glance, it is hard to
>     say just
> why, but I think it is because the blades show the right amount of
> curvature
> versus width.  If you had longer grass, the curvature in the first picture
> would
> look more realistic.  An individual blade of grass is fairly stiff, and
> does not usually exhibit a great deal of bending unless exposed to high
> winds.
> 
> Cheers!
> 
> Chip Shults
> My robotics, space and CGI web page - http://home.cfl.rr.com/aichip


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From: Bill DeWitt
Subject: Re: Please help me compare some grass
Date: 29 Mar 2002 23:59:53
Message: <3ca54649$1@news.povray.org>
"Rune" <run### [at] mobilixnetdk> wrote in message
news:3ca509a8@news.povray.org...
> In which of these two images does the grass look more real?
>
> 1: http://rsj.mobilixnet.dk/3d/include/fgrass.jpg
>
> 2: http://rsj.mobilixnet.dk/3d/include/fgrass2.jpg
>
> ...and why? ...and what can be improved?

    I think the curved one is less realistic. It seems forced. The straight
one is too straight, but within the realm of possible. The curvy one would
be right for 2 ft high grass.


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From: Rune
Subject: UPDATE
Date: 30 Mar 2002 05:06:11
Message: <3ca58e13@news.povray.org>
I made a modified version of the second image, where the grass is a bit more
turbulated, and a bit lighter in color. How is the third image compared to
the others?

1: http://rsj.mobilixnet.dk/3d/include/fgrass.jpg

2: http://rsj.mobilixnet.dk/3d/include/fgrass2.jpg

3: http://rsj.mobilixnet.dk/3d/include/fgrass3.jpg

Rune
--
3D images and anims, include files, tutorials and more:
Rune's World:  http://rsj.mobilixnet.dk (updated Feb 16)
POV-Ray Users: http://rsj.mobilixnet.dk/povrayusers/
POV-Ray Ring:  http://webring.povray.co.uk


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From: Jan Walzer
Subject: Re: UPDATE
Date: 30 Mar 2002 05:12:06
Message: <3ca58f76@news.povray.org>
/me still likes the 2nd image most ...

I'm not sure, if you see so much "pattern"  in a closeup of the grass ...


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From: Hugo
Subject: Re: Please help me compare some grass
Date: 30 Mar 2002 09:38:08
Message: <3ca5cdd0$1@news.povray.org>
Nr 2 is best.. Less waves and more stiff.. Both textures are best at a
distance - not surprising - but really good, at a distance! The straight
ones are *not* too straight IMO.. Besides I wonder if not most blades should
wave almost in the same direction - either due to wind or the sun, that
attracts them.

Regards,
Hugo


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From: Hugo
Subject: Re: UPDATE
Date: 30 Mar 2002 09:39:16
Message: <3ca5ce14$1@news.povray.org>
Too much bending, and should be in the same direction.


Regards,
Hugo


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