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"Ramanan.M.G" <bak### [at] vsnl com> wrote in message
news:410c9146@news.povray.org...
> I am using HF to depict window curtains. How can I apply, image
pattern
> with tiling.
Hiya. Image maps are -90 degrees around the x axis compared to the HF
surface, so when you apply:
pigment {
image_map {
jpeg "tile.jpg"
}
rotate +90*x
}
this will turn it down onto the surface.
The image will tile if the HF size is larger than 1 unit, since both are
initially 1 unit in size. That said, be sure to put a scale <2,1,2> (or
whatever dimensions) before the pigment or texture or material being used,
not afterward. Or... you may scale the pigment smaller... either way you
want.
Note: This will not map onto the actual surface undulations, and only as
though projected onto the HF from above by a HF-sized column of light,
meaning it will stretch downward into the sloped parts. To avoid that you
would need to use uv mapping in another type of object, e.g. a mesh, since
HF's can't be uv mapped.
If there's another way, I'm not able to provide it.
Bob H.
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> I am using HF to depict window curtains. How can I apply,
> image pattern with tiling.
Try using the HF_* macros from shapes.inc (They are described in the
documentation, take a look at
http://povray.org/documentation/view/3.6.0/95/), they support UV-mapping
which will allow your image map to actually follow the curtain (instead
of a simple projection with a normal image map).
HTH,
Florian
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