I'm trying to create a texture that combines multiple normal patterns, so of
course I use "average".  But the resulting pattern is too shallow, and I
want to make it more pronounced.  I've tried various things, but I can't
seem to increase the intensity.  Anybody know what I'm doing wrong?

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Actually, I believe my problem may be with the pattern that I'm using.  I'm
using facets, and after checking the documentation I haven't found a way to
increase the intensity of the facets for a normal.

I'm trying to have a texture that has large facets, but with smaller facets
between.  So I averaged a large facet normal and small facet normal, but in
the result the facets are so faint you can hardly see either of them.

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"Kirk Andrews" <kir### [at] hotmailcom> wrote in message 
news:web.457f88ebb76ee1819033e1160@news.povray.org...
>
> I'm trying to have a texture that has large facets, but with smaller 
> facets
> between.  So I averaged a large facet normal and small facet normal, but 
> in
> the result the facets are so faint you can hardly see either of them.
>

I don't know if it would be of any use in your circumstances, but I've found 
that for flat surfaces it can be effective to scale the normal in a 
direction at right angles to the surface. I've included a simple but extreme 
example below.

camera {location <0,1,-1>}
light_source { <1, 20, -20> color rgb 1}

plane {y,0 rotate  z*0.001
  texture {
    pigment {color rgb 1}
    normal {granite}
  }
}
plane {y,0 rotate -z*0.001
  texture {
    pigment {color rgb 1}
    normal {granite scale <1,10,1>}
  }
}

Regards,
Chris B.

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Kirk Andrews nous apporta ses lumieres en ce 13-12-2006 00:00:
> Actually, I believe my problem may be with the pattern that I'm using.  I'm
> using facets, and after checking the documentation I haven't found a way to
> increase the intensity of the facets for a normal.
> 
> I'm trying to have a texture that has large facets, but with smaller facets
> between.  So I averaged a large facet normal and small facet normal, but in
> the result the facets are so faint you can hardly see either of them.
> 
> 
> 
> 
Try increasing the ponderation factor for the large patern.
normal_map{[2 facets][1facets scale 0.1]}
This will double the weight of the large scale pattern.

-- 
Alain
-------------------------------------------------
"The fact that windows is one of the most popular ways to operate a computer 
means that evolution has made a general fuckup and our race is doomed." 
            -- Anon.

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Well you can do this:
normal {
    average 200 //this scales the bumps a lot, default is 1
    normal_map {
        etc.
    }
}

Or you can use bump_scale ... anywhere to have the same effect.
Not sure if it affects facets.

Also accuracy is worth tweaking, since normals sometimes appear a but wrong 
because it's sampling them inaccurately, so a smaller accuracy value can 
produce sharper edges but sometimes makes it look worse. Though again I'm 
not sure if this affects facets.

-- 
Tek
http://evilsuperbrain.com

"Kirk Andrews" <kir### [at] hotmailcom> wrote in message 
news:web.457f88ebb76ee1819033e1160@news.povray.org...
> Actually, I believe my problem may be with the pattern that I'm using. 
> I'm
> using facets, and after checking the documentation I haven't found a way 
> to
> increase the intensity of the facets for a normal.
>
> I'm trying to have a texture that has large facets, but with smaller 
> facets
> between.  So I averaged a large facet normal and small facet normal, but 
> in
> the result the facets are so faint you can hardly see either of them.
>
>
>
>

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Correction, I mean bump_size.

-- 
Tek
http://evilsuperbrain.com

"Tek" <tek### [at] evilsuperbraincom> wrote in message 
news:457ff2bc$1@news.povray.org...
> Well you can do this:
> normal {
>    average 200 //this scales the bumps a lot, default is 1
>    normal_map {
>        etc.
>    }
> }
>
> Or you can use bump_scale ... anywhere to have the same effect.
> Not sure if it affects facets.
>
> Also accuracy is worth tweaking, since normals sometimes appear a but 
> wrong because it's sampling them inaccurately, so a smaller accuracy value 
> can produce sharper edges but sometimes makes it look worse. Though again 
> I'm not sure if this affects facets.
>
> -- 
> Tek
> http://evilsuperbrain.com
>
> "Kirk Andrews" <kir### [at] hotmailcom> wrote in message 
> news:web.457f88ebb76ee1819033e1160@news.povray.org...
>> Actually, I believe my problem may be with the pattern that I'm using. 
>> I'm
>> using facets, and after checking the documentation I haven't found a way 
>> to
>> increase the intensity of the facets for a normal.
>>
>> I'm trying to have a texture that has large facets, but with smaller 
>> facets
>> between.  So I averaged a large facet normal and small facet normal, but 
>> in
>> the result the facets are so faint you can hardly see either of them.
>>
>>
>>
>>
>
>

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"Kirk Andrews" <kir### [at] hotmailcom> wrote:
> Actually, I believe my problem may be with the pattern that I'm using.  I'm
> using facets, and after checking the documentation I haven't found a way to
> increase the intensity of the facets for a normal.

have you tried
facets coords 2

or something?

the facets pattern has two keywords which control its size, take a look at
the documentation...

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