Subject:
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RE: Classic Space set 6888
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Newsgroups:
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lugnet.cad.ray
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Date:
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Tue, 7 Nov 2000 18:01:07 GMT
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Viewed:
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1800 times
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Tobias Möller writes:
> I made a movie once, with a Futuron guy flying on a spaceship over a
> classic space landscape -entirely in POV-ray. (The movie got lost when
> my HD crashed, so I can't show it to you.)
Bummer.
> The hills were easy to make; use a heightfield!
I have used heightfields several times, but I can never get them to look
exactly as I want them too. I wanted hills that really looked like the CS
hills in this case.
> My hills weren't really like the classic space ones, but you could
> fine-tune them to perfection.
That's the hard part. And creating heightfield images is quite difficult,
especially when you know exactly what you want. For some reason, I also
tend to get randomly scattered, small, unsmooth triangles in my heightfields
too, which really ruin the effect because they get shaded much darker.
> Tip: If you are just going to use the hills as a backdrop, use a plane
> first, as the main "floor" for the models, then add the heightfield,
> scale it so you can't see the edges of it, and translate it to a
> position behind your model. Then, you make a union {} of the plane and
> heightfield, and add the same texture to them. (I used "Goldenrod"
> colour with a bump normal, scaled down pretty much to look like sand)
This is basically what I did for the first render, but then I redid the
hills in PhotoPaint since I didn't like the way they turned out. For some
reason, the way I orient my light sources always ends shading the hills very
different from the plane, so I get ugly edges where the hills intersect the
plane.
> If you wish, you can then add focal blur to the camera, to make the
> hills a bit blurry. (I don't know how to use focal blur, though)
I think I've tried to use focal blur once or twice, but it takes a whole lot
more rendering time...
--Bram
Bram Lambrecht
BXL34@po.cwru.edu
http://home.cwru.edu/~bxl34/
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