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Very nice even though I don't know how to call it ( I doubt you do
either). I find the metallic texture very impressive.
Ph Gibone wrote:
> And it's not even AWSOME, but fine enough for me, what do you think :
> Comments, Hurrahs, Criticisms are warmly welcome (I'd like to improve)!
>
> Philippe
>
> [Image]
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>Very nice even though I don't know how to call it ( I doubt you do
>either).
I know many things that it is not, may be it is some kind of galactic clock,
speaking with the heart of the galaxy to figure out the right time (which is
NOW).
>I find the metallic texture very impressive.
If you are speaking of the reddish one here is the source (very simple
texture in fact)
#declare CuivrePur =
material // CuivrePur
texture
pigment
{
color rgb <0.864567, 0.468733, 0.364567>
}
finish
{
ambient 0.280567
diffuse 0.7
brilliance 6.0
phong 0.75
phong_size 43.743333
specular 0.41
reflection 0.2733
}
}
}
I use it very often (in "I killed my plumber" for instance)
Philippe
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Kewl. Put some mist in the teardrop/bolb thingies.
Cheers
Steve
Ph Gibone wrote:
>
> And it's not even AWSOME, but fine enough for me, what do you think :
> Comments, Hurrahs, Criticisms are warmly welcome (I'd like to improve)!
>
> Philippe
>
> [Image]
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Hi Steve,
Thanks for giving your advice, but I have some problems with your answer :
1) +ACo-Kewl+ACo- is not in my dictionnary, do you have any synonym ?
2) There is no teardrop shape, no blob but many thingies in this scene so
which one do you mean the big sphere in the background ? I will try +ACE-
Philippe
Steve a +AOk-crit dans le message +ADw-37243143.DEB5AE1B+AEA-ndirect.co.uk+AD4-...
+AD4-Kewl. Put some mist in the teardrop/bolb thingies.
+AD4-
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Hmm.. I have been trying to make a horn for some while, without any success at
all. i'll make some scans of the object I'm trying to create, and I'd like to
know a bit more of the procedure you used when you made yours.(yep, I know it's
a program, but I still want to know more:-)
As for the image, It looks good, although I have noo idea about what it is...
Ok, a clock of sorts, with precision.. ok, how did you say I was to use it?
(what time is it in the image?)
Ph Gibone wrote:
>
> And it's not even AWSOME, but fine enough for me, what do you think :
> Comments, Hurrahs, Criticisms are warmly welcome (I'd like to improve)!
>
> Philippe
>
> [Image]
--
//Spider
[ spi### [at] bahnhof se ]-[ http://www.bahnhof.se/~spider/ ]
What I can do and what I could do, I just don't know anymore
"Marian"
By: "Sisters Of Mercy"
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Spider wrote:
>
> Hmm.. I have been trying to make a horn for some while, without any success at
> all. i'll make some scans of the object I'm trying to create, and I'd like to
> know a bit more of the procedure you used when you made yours.(yep, I know it's
> a program, but I still want to know more:-)
The macro that Gilles offers for extruding along a path can easily
produce horn shaped objects.
http://www.mediaport.net/Artichaud/Tran/sources/gtsrcee.htm
--
Ken Tyler
mailto://tylereng@pacbell.net
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thanx.
i'm looking at it now.
Ken wrote:
>
> Spider wrote:
> >
> > Hmm.. I have been trying to make a horn for some while, without any success at
> > all. i'll make some scans of the object I'm trying to create, and I'd like to
> > know a bit more of the procedure you used when you made yours.(yep, I know it's
> > a program, but I still want to know more:-)
>
> The macro that Gilles offers for extruding along a path can easily
> produce horn shaped objects.
>
> http://www.mediaport.net/Artichaud/Tran/sources/gtsrcee.htm
>
> --
> Ken Tyler
>
> mailto://tylereng@pacbell.net
--
//Spider
[ spi### [at] bahnhofse ]-[ http://www.bahnhof.se/~spider/ ]
What I can do and what I could do, I just don't know anymore
"Marian"
By: "Sisters Of Mercy"
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>Hmm.. I have been trying to make a horn for some while, without any success
at
>all. i'll make some scans of the object I'm trying to create, and I'd like
to
>know a bit more of the procedure you used when you made yours.(yep, I know
it's
>a program, but I still want to know more:-)
I saw the answer by Ken, and he's right (sorry for this pleonasm), but
personaly, I prefer Math (don't call me perverted !). My opinion (very
personal and not a dogma) is : if you can do it with pure math do it so, if
you're stuck, try something else (of course it is depending on the math
skills of the current speaker).
Of course you can melt the two ways and use your math to create the two
pathes used in the Gilles Macro)
So back to math : the Horn is made of a shrinking circle circling around a
fixed point and
here is the equation :
x = a*cos(u)+b*cos(c*u)*cos(u)*cos(v)
y = a*sin(u)+b*cos(c*u)*sin(u)*cos(v)
z = b*cos(c*u)*sin(v)
(of course you can switch x, y and z, here, the big circle is in the xy
plane)
Where a = 10 (Radius of the big circle), b = 3 (radius of the little
rotating circle), c = .6 (this one is a little more complicated to
understand, it measures how fast the little circle vanishes, see below)
(u and v in degrees here)
u in [0, 150] (this ending value gives you the angle at which the small
circle vanishes, it it strongly correlated with the c parameter because c =
90 / ending angle)
v in [0, 360]
What it particularly interesting with these maths is that you know what are
the parameters for, and it's very easy to modify them, if you want a very
thin horn just decrease b, if you want the horn to vanish after a half
circle put ending angle = 180 (Half circle) and c = 90/180 = 0.5
>As for the image, It looks good, although I have noo idea about what it
is...
>Ok, a clock of sorts, with precision.. ok, how did you say I was to use it?
>(what time is it in the image?)
4 h 0 m 40 s, or may be 8 h 0 m 20 s
Philippe
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Thank You!!!!!!! ;-]
KB-
Ph Gibone wrote:
> >Hmm.. I have been trying to make a horn for some while, without any success
> at
> >all. i'll make some scans of the object I'm trying to create, and I'd like
> to
> >know a bit more of the procedure you used when you made yours.(yep, I know
> it's
> >a program, but I still want to know more:-)
>
> I saw the answer by Ken, and he's right (sorry for this pleonasm), but
> personaly, I prefer Math (don't call me perverted !). My opinion (very
> personal and not a dogma) is : if you can do it with pure math do it so, if
> you're stuck, try something else (of course it is depending on the math
> skills of the current speaker).
>
> Of course you can melt the two ways and use your math to create the two
> pathes used in the Gilles Macro)
>
> So back to math : the Horn is made of a shrinking circle circling around a
> fixed point and
> here is the equation :
>
> x = a*cos(u)+b*cos(c*u)*cos(u)*cos(v)
> y = a*sin(u)+b*cos(c*u)*sin(u)*cos(v)
> z = b*cos(c*u)*sin(v)
>
> (of course you can switch x, y and z, here, the big circle is in the xy
> plane)
>
> Where a = 10 (Radius of the big circle), b = 3 (radius of the little
> rotating circle), c = .6 (this one is a little more complicated to
> understand, it measures how fast the little circle vanishes, see below)
>
> (u and v in degrees here)
> u in [0, 150] (this ending value gives you the angle at which the small
> circle vanishes, it it strongly correlated with the c parameter because c =
> 90 / ending angle)
> v in [0, 360]
>
> What it particularly interesting with these maths is that you know what are
> the parameters for, and it's very easy to modify them, if you want a very
> thin horn just decrease b, if you want the horn to vanish after a half
> circle put ending angle = 180 (Half circle) and c = 90/180 = 0.5
>
> >As for the image, It looks good, although I have noo idea about what it
> is...
> >Ok, a clock of sorts, with precision.. ok, how did you say I was to use it?
> >(what time is it in the image?)
>
> 4 h 0 m 40 s, or may be 8 h 0 m 20 s
>
> Philippe
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Thanks for the reference Ken, but my spline macro may be overkill for that. Also, the
macro doesn't modify the size of the extruded shape (no pointy end), and splines with
that kind of perfect mathematical shape are hard to figure out. Perhaps a little
"connect-the-dot" macro would do (not putting this in scenes-files because it's
really too small). It's not perfect but you get the idea.
Gilles
#include "colors.inc"
camera{location <1.0, 5, -30.0> direction 1.5*z right 4/3*x look_at <0.0, 5,
0.0>}
light_source{<-30, 30, -30> color Cyan} light_source{<30, 30, -30> color White*2}
#macro mHorn(hradius,hsize,hangle,n)
union{
#local lseg=pi*hsize/n;
#local i=1;
#local r1=hradius;
#local P1=<0,0,0>;
#local P2=<lseg,0,0>;
#while (i<=n)
#local r2=hradius*(n-i)/n;
cone{P1,r1,P2,r2} sphere{P1,r1}
cone{P1,r1,P2,r2 scale <-1,1,1>} sphere{P1,r1 scale <-1,1,1>}
#local P1=P2;
#local P2=P1+lseg*(vnormalize(vrotate(P1,z*hangle*i/n)));
#local r1=r2;
#local i=i+1;
#end
}
#end
object{mHorn(2,5,80,200) texture{pigment{rgb<1,0.7,0.3>} finish{metallic brilliance 5
ambient 0.01 phong 1}}}
background{White}
Ken wrote:
> Spider wrote:
> >
> > Hmm.. I have been trying to make a horn for some while, without any success at
> > all. i'll make some scans of the object I'm trying to create, and I'd like to
> > know a bit more of the procedure you used when you made yours.(yep, I know it's
> > a program, but I still want to know more:-)
>
> The macro that Gilles offers for extruding along a path can easily
> produce horn shaped objects.
>
> http://www.mediaport.net/Artichaud/Tran/sources/gtsrcee.htm
>
> --
> Ken Tyler
>
> mailto://tylereng@pacbell.net
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