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In article <3a984907@news.povray.org>, "yooper" <Out### [at] huntel net>
wrote:
> . Have you tried a single colour per sphere instead of an image
> map on the union? Megapov has an easier solution for this than pov3.1
> ***
> That's what my original intention was but . . . a bead for each pixel
> really limits the size of the photograph that I can use. Some small ones
> would work but even at 400x400 . . . yikes !!! So I just shot it at the
> union and way very pleasently surprised by the result.
I don't think he meant a bead per pixel, just a single color for each
bead. In MegaPOV, you could use the eval_pigment() patch to get the
color of the image_map at the center of each bead. With the official
version, you would have to either code a program to get the needed
information, or just translate the texture so the portion at the bead
position is at < 0, 0, 0>, scale it large enough that you can't see any
color blend across it, then translate it to the bead position.
object {Bead
texture {ImageTexture
translate -BeadPosition
scale 100// this should be big enough...
}
translate BeadPosition
}
--
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/
<><
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Hi Bob H., you recently wrote in povray.binaries.images:
> I've looked up the possibility of a ISP with a 1-800 phone number to forego
> the need for local calls from anyplace but found none.
I use attglobal.net when I travel. They have local dial-in nodes
almost everywhere in the world, plus they have a 1-800 number.
- Lutz
email : lut### [at] stmuccom
Web : http://www.stmuc.com/moray
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Alf says:
Use assumed_gamma 1 in your pov file
and:
Use assumed_gamma 1 in your pov file
***
ok . . .ok . . . i get it :) hehe
or ... are you telling me to use it twice . . .?
Y
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I don't think he meant a bead per pixel, just a single color for each
bead. In MegaPOV, you could use the eval_pigment() patch to get the
color of the image_map at the center of each bead.
***
I see . . . just seems like that would be similar to 'posterizing' a pic . .
.
with a loss of definition. But I will give it a try and see what it looks
like . . .
**
Y
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Try display_gamma=2.2 or whatever to match YOUR monitor,
in your povray.ini, then use assumed_gamma 1 in your pov file.
***
OK . . . I've read everything I can find on this and I understand
why these commands are used. However, I cannot find the
dislplay_gamma setting anywhere and I have no clue as to what
I have to do to set it. I don't know what I'm doing in these ini files
jand I've never used the command line so I'm not gonna muck around
in there and screw something up.
Something has to be changed tho . . . if I use assumed_gamma
of 1.0 . . . my rendered displays look horrible.
How do I go about this ? And understand . . . I don't have a
clue here . . . it's only easy if you know how and I don't ;)
The Help files explain very well why . . . but assume (wrongly)
that I know how to do it.
TIA
**
Y
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Open your povray.ini, which will be in your povray folder, in any text
editor then add at the end:
Display_Gamma=2.2
For example an extract from mine:
Library_Path=C:\DOS\POVRAY
Library_Path=C:\DOS\POVRAY\include
Library_Path=C:\DOS\POVRAY\include\mine
Display=on
Display_Gamma=2.1
+dgt
For most PC monitors gamma 2.2ish should be OK, but I don't know about
LCDs or Macs. Anyone else with a different monitor gamma, but using
"your" pov source should then see what you see.
Check "3.2.2.2 Display Output Options" in the docs.
Hope this helps
Alf
"yooper" <Out### [at] huntelnet> wrote in message
news:3a9889fd@news.povray.org...
> Try display_gamma=2.2 or whatever to match YOUR monitor,
> in your povray.ini, then use assumed_gamma 1 in your pov file.
>
> ***
[snip]
> OK . . . I've read everything I can find on this and I understand
> why these commands are used. However, I cannot find the
> dislplay_gamma setting anywhere and I have no clue as to what
> I have to do to set it. I don't know what I'm doing in these ini
files
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Couldn't see my post when I checked so sent it again to be sure.
Around midnight UTC I find povray.org a bit slow here :-(
Alf
"yooper" <Out### [at] huntelnet> wrote in message
news:3a987da9@news.povray.org...
> Alf says:
> Use assumed_gamma 1 in your pov file
> and:
> Use assumed_gamma 1 in your pov file
> ***
> ok . . .ok . . . i get it :) hehe
> or ... are you telling me to use it twice . . .?
>
> Y
>
>
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In article <3a987daa@news.povray.org>, "yooper" <Out### [at] huntelnet>
wrote:
> I see . . . just seems like that would be similar to 'posterizing' a
> pic . . . with a loss of definition. But I will give it a try and see
> what it looks like . . .
I think posterization only affects the number of levels of color in the
image. This would be more of a conversion to a completely different
pixel layout, as well as a resolution change. (Hmm, I wonder what a
computer screen with a Fibonacci layout would look like...and how would
the pixels be addressed?)
--
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/
<><
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"your" pov source should then see what you see.
Check "3.2.2.2 Display Output Options" in the docs.
Hope this helps
Alf
-------
it does indeed . . . I thank you sir . . .
**
Y
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I've put 3 images on my website that will give you an idea what
single-colour spheres will look like. All around 47k.
duck1.jpg and BlueFoot.jpg - from photos using spheres, and
RedBird.png using squares this time for a neighbour to use as a sewing
pattern.
http://www.peake42.freeserve.co.uk/pix2
Alf
"yooper" <Out### [at] huntelnet> wrote in message
news:3a987daa@news.povray.org...
> I don't think he meant a bead per pixel, just a single color for
each
> bead. In MegaPOV, you could use the eval_pigment() patch to get the
> color of the image_map at the center of each bead.
> ***
>
> I see . . . just seems like that would be similar to 'posterizing' a
pic . .
> .
> with a loss of definition. But I will give it a try and see what it
looks
> like . . .
> **
> Y
>
>
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