"Jim Holsenback" <jho### [at] hotmailcom> schreef in bericht 
news:48d50dbe@news.povray.org...
>
>
> Bingo! ..... I see where I wandered off the path. Thanks Thomas!
>
You are welcome, Jim. I remember some time ago, I hit my head against the 
same wall  :-)

Thomas

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Jim Holsenback wrote:
> "Thomas de Groot" <t.d### [at] internlDOTnet> wrote in message 
> news:48d503c5$1@news.povray.org...
>> It should be possible to do this in a layered texture. See for instance 
>> the following example from one of my textures where I added an image_map 
>> as the uppermost texture layer:
> 
> Bingo! ..... I see where I wandered off the path. Thanks Thomas!
> 
> Jim 

Now that you can place textures how you want them, you can always try my 
proximity pattern macros 
(news://news.povray.org:119/489f4610@news.povray.org) to get some dirt 
into the inside edges. I'd like to see how it turns out :)

Sam

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Jim Holsenback nous illumina en ce 2008-09-20 08:04 -->
> Howdy,
> 
> I'm working on some objects for a scene that have maker marks or 
> decorations. The swan on this jug is from a photograph of an actual jug in 
> my shop. I used Gimp to play with the color map. I saved the gif image with 
> indexed color map, then I was able to use several transmit statements in my 
> image_map statement to isolate the background and image. Before all this I 
> had developed a texture_map that has some age marks (dents), but when I 
> tried to overlay the swan texture onto the crock texture I ran into a 
> problem (can't overlay a texture over a patterned texture). I was however 
> able to at least get it this far when I removed the dents portion of my 
> texture map. Now my jug looks rather sterile and I'd like to age it up a 
> bit. Any ideas on how to do this?
> 
> Jim 
> 
> 
> 
Why bothering using several transparency statements in am image_map? You can set 
your GIF to have one, or several color, as transparent. That way, you can make 
the background disapear.
Or, you could have used a PNG with an alpha channel, and have antialiased 
transparency.

-- 
Alain
-------------------------------------------------
The tree of liberty must be refreshed from time to time with the blood of
patriots and tyrants.
Thomas Jefferson

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"Alain" <ele### [at] netscapenet> wrote in message 
news:48d56ced$1@news.povray.org...
> Why bothering using several transparency statements in am image_map? You 
> can set your GIF to have one, or several color, as transparent. That way, 
> you can make the background disapear.
> Or, you could have used a PNG with an alpha channel, and have antialiased 
> transparency.

this was something new to me so maybe my work flow needs a look still. I 
ended up with a color_map with 16 colors. Some of thhe colors were gradients 
of blue (transition between the blue swan outline and the background). I 
made all the transition colors all blue or all white. Then ended up with the 
texture statement looking like this:

texture {
      pigment {
      image_map {
        gif "Swan.gif"
        transmit 11,1.0
        transmit 12,1.0
        transmit 13 1.0
        transmit 14,1.0
        transmit 15,1.0
        once
        }
      scale <0.05,0.25,0.05>
      scale 3
      warp {cylindrical}
      translate y*1.4
      rotate y*300
      }

maybe not the most elegant but it worked for what I wanted.

Jim

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"stbenge" <THI### [at] hotmailcom> wrote in message 
news:48d54e8a@news.povray.org...
> Now that you can place textures how you want them, you can always try my 
> proximity pattern macros 
> (news://news.povray.org:119/489f4610@news.povray.org) to get some dirt 
> into the inside edges. I'd like to see how it turns out :)
>
> Sam

ooooo good idea .... i'll have a look :-)

Jim

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"Jim Holsenback" <jho### [at] hotmailcom> wrote:
> "stbenge" <THI### [at] hotmailcom> wrote in message
> news:48d54e8a@news.povray.org...
> > Now that you can place textures how you want them, you can always try my
> > proximity pattern macros
> > (news://news.povray.org:119/489f4610@news.povray.org) to get some dirt
> > into the inside edges. I'd like to see how it turns out :)
> >
> > Sam
>
> ooooo good idea .... i'll have a look :-)
>
> Jim

If all else fails, function patterns can do almost anything...

-tgq

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news: web.48d70593653cbf5c67b294d0@news.povray.org...
> "Jim Holsenback" <jho### [at] hotmailcom> wrote:
>> "stbenge" <THI### [at] hotmailcom> wrote in message
>> news:48d54e8a@news.povray.org...
>> > Now that you can place textures how you want them, you can always try 
>> > my
>> > proximity pattern macros
>> > (news://news.povray.org:119/489f4610@news.povray.org) to get some dirt
>> > into the inside edges. I'd like to see how it turns out :)
>> >
>> > Sam
>>
>> ooooo good idea .... i'll have a look :-)
>>
>> Jim
>
> If all else fails, function patterns can do almost anything...
>
Image pattern is a good choice as well :-)


Marc

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m_a_r_c wrote:
> Image pattern is a good choice as well :-)

That's *cheating*! ;-)

-- 
William Tracy
afi### [at] gmailcom -- wtr### [at] calpolyedu

The UNIX system has a command, nice, which allows a user to voluntarily 
reduce the priority of his process, in order to be nice to the other 
users. Nobody ever uses it.
     -- Andrew Tannenbaum, _Modern Operating Systems_

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48d85b7b$1@news.povray.org...
> m_a_r_c wrote:
>> Image pattern is a good choice as well :-)
>
> That's *cheating*! ;-)
>
Uh why? where? too easy?

Marc

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"William Tracy" <wtr### [at] calpolyedu> schreef in bericht 
news:48d85b7b$1@news.povray.org...
> m_a_r_c wrote:
>> Image pattern is a good choice as well :-)
>
> That's *cheating*! ;-)
>

Cheating is making a jug in POV-Ray and selling it for the real thing  :-)

Thomas

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