Hello,

is it possible to create a non-planar heightField (a sphere, a blob... ), or
maybe, to deform one?

is Pov a Global Illumination renderer?

is it possible that an object self produce his own light?

thanks

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"Sylvax" <syl### [at] darthsylvaxcom> wrote :
>
> is it possible to create a non-planar heightField (a sphere, a blob... ),
or
> maybe, to deform one?

    Not directly, MegaPov can do it with isosurfaces and there is a utility,
"orbcyl" or something, that can make a mesh from a HF in the shape of a
sphere or a cylinder. POV 3.5 will almost certainly do it.

> is Pov a Global Illumination renderer?
>
> is it possible that an object self produce his own light?

    I don't know the term 'Global Illumination" but if it relates to the
next question, you may be looking for "ambient". It's in the docs.

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On Thu, 9 Aug 2001 09:07:07 -0400, Bill DeWitt wrote:
>> is Pov a Global Illumination renderer?
>>
>> is it possible that an object self produce his own light?
>
>    I don't know the term 'Global Illumination" but if it relates to the
>next question, you may be looking for "ambient". It's in the docs.

More likely he or she is looking for "radiosity."  It exists in the current
official version, but is much improved in MegaPOV and will be even more
improved in 3.5.  (I know you know this, Bill; my comments are addressed to
the original poster. :) )

-- 
#macro R(L P)sphere{L F}cylinder{L P F}#end#macro P(V)merge{R(z+a z)R(-z a-z)R(a
-z-z-z a+z)torus{1F clipped_by{plane{a 0}}}translate V}#end#macro Z(a F T)merge{
P(z+a)P(z-a)R(-z-z-x a)pigment{rgbt 1}hollow interior{media{emission T}}finish{
reflection.1}}#end Z(-x-x.2y)Z(-x-x.4x)camera{location z*-10rotate x*90}

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> Bill DeWitt was saying something to the effect that...

> >there is a utility,
> >"orbcyl" or something, that can make a mesh from a HF in the shape of a
> >sphere or a cylinder.

Orb-cyl is actually a pair of command line utilities, orb and cyl, written by
John Beale, who also wrote the amazing HF-Lab height field utility. As
indicated, orb displaces a height field onto a sphere, and cyl onto a cylinder.
At the risk of crossing topic lines, here is the URL for John Beale's page:
Synthetic Landscapes.

>

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thanks

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On Thu, 9 Aug 2001 19:23:42 +0200, Sylvax wrote:
[26 lines of stuff only a computer would understand to express a one-word
 message.]

Please don't do that.

-- 
plane{-z,-3normal{crackle scale.2#local a=5;#while(a)warp{repeat x flip x}rotate
z*60#local a=a-1;#end translate-9*x}pigment{rgb 1}}light_source{-9red 1rotate 60
*z}light_source{-9rgb y rotate-z*60}light_source{9-z*18rgb z}text{ttf"arial.ttf"
"RP".01,0translate-<.6,.4,.02>pigment{bozo}}light_source{-z*3rgb-.2}//Ron Parker

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In article <3B72AB89.977F3176@aol.com>, Dave Dunn <poi### [at] aolcom> 
wrote:

> At the risk of crossing topic lines, here is the URL for John Beale's page:
> Synthetic Landscapes.
> 
> >

I think you wanted to post something more like:
http://www.best.com/~beale/gforge/

-- 
Christopher James Huff - chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/

<><

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