POV-Ray : Newsgroups : povray.binaries.images : Obscurity : Re: Obscurity Server Time
4 Oct 2024 13:11:13 EDT (-0400)
  Re: Obscurity  
From: Jay Duger
Date: 21 Mar 1999 15:16:25
Message: <36F5536A.84D29EBC@hawaii.rr.com>
Ken wrote:
> 
> Spider wrote:
> >
> > whoooa...
> > are they height_fields ??
> >
> > they look great..
> 
>  Your not going to believe the simplicity of this. The main wall is
> nothing more than a plane at z,0.1 . I then applied a .dem converted
> to .tga as a bumpmap. I let it tile it self in all directions. I took
> the same image and produced a 256 gray scale .tga from it and applied
> it as an image map with the same scale and rotations as the bump map
> for the colors you see.  That is how I managed to get exactly 256
> shades of gray in this image. ?:)
> 
>   This was looking ok but it was too uniform and you could see the
> repetition in the tiling effect. I tried to think of a way around it
> and for the first time ever it occured to me that it might just be
> possible to add turbulence to an image map and bump map. I tried it
> and guess what ? It worked. Not only did it get rid of the repeat
> tiling artifacts it also gave those really nice looking wandering
> cracks you see in the image. There is one HF object way to the right
> of the image to block the dark sky but was not really needed for the
> it to work.

	That's quite clever. I'd not thought to apply turbulence to image or
bump maps. Still, how did you manage to get the human figure to step
from the wall? Also, is it my imagination, or is that a horse head to
the right of the man?

> 
>   The plane in the foreground was also treated the same as the vertical
> wall.
> 
> --
> Ken Tyler
> 
> mailto://tylereng@pacbell.net

-- 
Jay Dugger
Sometimes the delete key is your best friend.


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