I would like to able to assign different finishes to different areas of
a texture using a map image; call it a 'finish_map'. Having often seen
3d artists use specular or shininess maps with other programs,
I expected I would be able to in pov as well, perhaps by clever use of
material_map to map entire textures onto the object, with different
finishes for each. This doesn't produce the desired result: material_map
is designed to use indexed color images, with one texture assigned to
each color in the index. What I really want is to be able to use a black
and white image, with lighter pixels indicating that more shininess
should be applied there. What can I do?

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Get MegaPov 0.4 at http://nathan.kopp.com/download.htm , if you haven't already,
and use 'image_pattern' and I think you might be able to do what you're asking
about.  From the MegaPov HTML document is an example of it's use:

texture {
  image_pattern { tga "image.tga" use_alpha }
  texture_map {
    [0 mytex ]
    [1 pigment{transmit 1} ]
  }
}


Bob

"anonymous" <dum### [at] gatenet> wrote in message
news:38E58E07.46364CA6@gate.net...
| I would like to able to assign different finishes to different areas of
| a texture using a map image; call it a 'finish_map'. Having often seen
| 3d artists use specular or shininess maps with other programs,
| I expected I would be able to in pov as well, perhaps by clever use of
| material_map to map entire textures onto the object, with different
| finishes for each. This doesn't produce the desired result: material_map
| is designed to use indexed color images, with one texture assigned to
| each color in the index. What I really want is to be able to use a black
| and white image, with lighter pixels indicating that more shininess
| should be applied there. What can I do?
|

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anonymous wrote:
> I would like to able to assign different finishes to different areas of
> a texture using a map image; call it a 'finish_map'. Having often seen

Dear anonymous. This can be done with material_map since it contains textures,
and textures contain finishes. I'm not sure what your question is because you
seem to know that already..

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to do this the dumb way, you could make a 256 color greyscale image and
make a separate texture for each (the same, only with varying shininess)
and map each to the 256 shades.  you might be able to write a macro to
do this for you.

Sigmund Kyrre Aas wrote:
> 
> anonymous wrote:
> > I would like to able to assign different finishes to different areas of
> > a texture using a map image; call it a 'finish_map'. Having often seen
> 
> Dear anonymous. This can be done with material_map since it contains textures,
> and textures contain finishes. I'm not sure what your question is because you
> seem to know that already..

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ryan constantine wrote:

> to do this the dumb way, you could make a 256 color greyscale image and
> make a separate texture for each (the same, only with varying shininess)
> and map each to the 256 shades.  you might be able to write a macro to
> do this for you.
>
> Sigmund Kyrre Aas wrote:
> >
> > anonymous wrote:
> > > I would like to able to assign different finishes to different areas of
> > > a texture using a map image; call it a 'finish_map'. Having often seen
> >
> > Dear anonymous. This can be done with material_map since it contains textures,
> > and textures contain finishes. I'm not sure what your question is because you
> > seem to know that already..

bleah! That IS dumb. By the way, I am the "anonymous" that first posted this; sorry
for the confusion. You see, I have to keep switching my netscape "identity"
settings back and forth between anonymous with an email address of ano### [at] anoncom,
to Eiki Martinson/dumpms@gate.net. This is because I fear, rightly or wrongly, that
these settings are also available to web pages. Time to get off of netscape for my
mail and news needs, I think.

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Kari Kivisalo wrote:

> Eiki Martinson wrote:
> > I have to keep switching my netscape "identity"
> > settings back and forth between anonymous with an email address of ano### [at] anoncom,
> > to Eiki Martinson/dumpms@gate.net. This is because I fear, rightly or wrongly,
that
> > these settings are also available to web pages.
>
> See for yourself what the web pages see which is basically IP, browser
> and referer:
> http://kuolema.infodrom.north.de/cgi-bin/cgitest/listall
>
> -----------------------------------------------------------------------
>                       TubeAmp skin for WinAmp
>     http://216.65.92.2/download.php3?file=tubeamp.zip&area=winamp2
> -----------------------------------------------------------------------
> Kari Kivisalo                                          www.kivisalo.net

Thanks for the URL. It appears that this information is not available to web sites.
I'm
still setting up REAL mail, though. :)

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