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Should be very simple
A sphere with one half red and one half white
If I want multiple stripes it is really no problem but just half and half
appears to elude me.
sphere { <0, 0, 0> 1
pigment { gradient x
color_map { [0 color Red][ 0.5 color Red][0.5 color White][1 color
White] }}}
I have tried several radius options
Can somebody see the problem here...?
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In article <3839c45f@news.povray.org>, David Vincent-Jones
<geo### [at] galaxynet com> wrote:
> Should be very simple
> A sphere with one half red and one half white
> If I want multiple stripes it is really no problem but just half and half
> appears to elude me.
Try this:
sphere {<0, 0, 0>, 1
pigment { gradient x
color_map {
[0.0 color Red]
[0.5 color Red]
[0.5 color White]
[1.0 color White]
}
scale 2
translate y*1
}
}
The radius of the sphere is 1, so it is 2 units across. The gradient
needs to be translated and scaled to fit.
--
Chris Huff
e-mail: chr### [at] yahoocom
Web page: http://chrishuff.dhs.org/
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Oh, and this should probably have been posted to one of the other
groups like povray.newusers or povray.advanced-users. For such a basic
question, .newusers would probably have been the best place.
Also, the planar pattern might be a better choice for some things.
Maybe I should write another list pattern which colors different sides
of a plane, so it would be independant of object size...on the other
hand, my object pattern using a plane would do the same thing, so that
feature would be redundant.
--
Chris Huff
e-mail: chr### [at] yahoocom
Web page: http://chrishuff.dhs.org/
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In article <221119991738217992%chr### [at] yahoocom>, Chris Huff
<chr### [at] yahoocom> wrote:
I made a mistake, I read "gradient x" as "gradient y". It should be
translated along the same axis as the gradient, so "translate y*1"
should be "translate x*1".
--
Chris Huff
e-mail: chr### [at] yahoocom
Web page: http://chrishuff.dhs.org/
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On Mon, 22 Nov 1999 14:32:05 -0800, "David Vincent-Jones"
<geo### [at] galaxynetcom> wrote:
>Should be very simple
>A sphere with one half red and one half white
>If I want multiple stripes it is really no problem but just half and half
>appears to elude me.
sphere
{
0, 1
pigment
{ planar color_map { [0 Red][0.5 Red][0.5 White][1 White] }
scale 2 translate -y rotate 90*z
}
}
Peter Popov
ICQ: 15002700
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<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
I know that you people already know this one, but here goes anyway:
<br>color_map { [0 Red][0.5 Red][0.5 White][1 White] }
<br>is the same as
<br>color_map {[0.5 Red][0.5 White]}
<br>Well, except it is shorter.
<br>For some reason, one that I like, POV fills in the rest.
<p>Peter Popov wrote:
<blockquote TYPE=CITE>On Mon, 22 Nov 1999 14:32:05 -0800, "David Vincent-Jones"
<br><geo### [at] galaxynetcom> wrote:
<p>>Should be very simple
<br>>A sphere with one half red and one half white
<br>>If I want multiple stripes it is really no problem but just half and
half
<br>>appears to elude me.
<p>sphere
<br>{
<br> 0, 1
<br> pigment
<br> { planar color_map { [0 Red][0.5 Red][0.5 White][1 White] }
<br> scale 2 translate -y rotate 90*z
<br> }
<br>}
<br>
<p>Peter Popov
<br>ICQ: 15002700</blockquote>
</html>
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