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Duncan Gray wrote:
> ...
>
> Perhaps scratched would perhaps better describe the effect I'm searching
> for. Does anyone out there have access to any well used marbles; can you
> check should I be going for scratched and chipped, or just chipped ?
>
> ...
Hi
I consider your question very interesting. Even at work I found myself
trying to remember how used marble looked like. I make some tests and
bellow is the result. I think I came more or less close to what I
remember. Maybe it doesn't feet your needs, but if you are interested I
can post the code.
Alberto.
Post a reply to this message
Attachments:
Download 'mrbl.jpg' (50 KB)
Preview of image 'mrbl.jpg'
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Duncan Gray wrote:
>
> Francois Labreque wrote:
> > The marbles found in aerosol paint cans look just like the one on the
> > right.
>
> What on earth possesed you to break open a can and find out ?
^^^^^^^^
This-----------------------------------------------------'
--
Francois Labreque | //\\ Wear an ASCII ribbon!
flabreque | || ||
@ | \\// Support the campain
videotron.ca \\ against HTML e-mail
//\\ and news!
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Francois Labreque wrote:
> Duncan Gray wrote:
> >
> > Francois Labreque wrote:
> > > The marbles found in aerosol paint cans look just like the one on the
> > > right.
> >
> > What on earth possesed you to break open a can and find out ?
> ^^^^^^^^
> This-----------------------------------------------------'
I'm scared there are crazy people who don't cut cans of red paint open with
axes to find out what is inside.
--
Dan Johnson
http://www.geocities.com/zapob
Post a reply to this message
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Alberto wrote:
> Duncan Gray wrote:
> > ...
> >
> > Perhaps scratched would perhaps better describe the effect I'm searching
> > for. Does anyone out there have access to any well used marbles; can you
> > check should I be going for scratched and chipped, or just chipped ?
> >
> > ...
>
> Hi
>
> I consider your question very interesting. Even at work I found myself
> trying to remember how used marble looked like. I make some tests and
> bellow is the result. I think I came more or less close to what I
> remember. Maybe it doesn't feet your needs, but if you are interested I
> can post the code.
>
> Alberto.
>
> ------------------------------------------------------------------------
> [Image]
If only I had a digital camera I could send a picture of what an old marble
looks like. Oh wait I lost all my marbles.
--
Dan Johnson
http://www.geocities.com/zapob
Post a reply to this message
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> Ah, actually this effect was quite intentional, I thought they did have
air
> trapped in there alongside the swirls. I've done it by making the swirls
> slightly reflective as opposed to adjusting the IOR, but it'll be easy to
> remove
Sorry, you were right. They do have that bubble-look. I think maybe not as
visible as your pic. and maybe a bit rounder,more bubbly look. I.m starting
to feel a bit guilty giving advice left and right, knowing how I have
trouble myself, just getting the atmosphere right or the transparency.
Nevertheless your marbles do look quite amazing.
Nekar
Post a reply to this message
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Uhhh .. Ohh ...
This would be wonderful ....
--
background{rgb 1}camera{location<1,5,-2>look_at 0}#macro m(a,b,i)#local
d=(b-a)/
8;#local
e=vcross(d,y);#if(i)m(a-e,a+e+2*d,i-1)m(a+e,a+2*d-e,i-1)m(a+3*d-e,a+e+3
*d,i-1)m(a+3*d-e,a+5*d-e,i-1)m(a+6*d-e,a+e+6*d,i-1)m(a+8*d-e,a+e+8*d,i-1)#el
se
cylinder{a,b,vlength(d)/3 pigment{rgb 0}}#end#end m(-4*x,2*x,4) // Jan
Walzer
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Dan Johnson wrote:
> I'm scared there are crazy people who don't cut cans of red paint open with
> axes to find out what is inside.
Damn straight.
--
David Fontaine <dav### [at] faricy net> ICQ 55354965
My raytracing gallery: http://davidf.faricy.net/
Post a reply to this message
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Dan Johnson wrote:
> If only I had a digital camera I could send a picture of what an old
> marble looks like. Oh wait I lost all my marbles.
Everyone at work is pretty much convinced I have (lost my marbles).
I have set several work colleges on a mission to creep into their kids
bedroom tonight and steal me some used marbles.
I didn't exlpain why I wanted them; that would spoil the fun.
Cheers.
--
Duncan Gray
(warning: may contain traces of nut)
Post a reply to this message
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Francois Labreque wrote:
> > What on earth possesed you to break open a can and find out ?
> ^^^^^^^^
> This-----------------------------------------------------'
Fair comment, I cant argue with that.
I do the same with electrical appliances:
a) If it works, I'll open up the case to find out how.
b) if it doesn't work, I'll open it up to find out why.
By strange co-incidence, my finding are nearly always the same:
a) Dont know - lots of chips and stuff.
b) Because I didn't put it back together again properly after operation a)
Cheers.
--
Duncan Gray
(warning: may contain traces of nut)
Post a reply to this message
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Dan Johnson wrote:
> I'm scared there are crazy people who don't cut cans of red paint open
with
> axes to find out what is inside.
At what point in this thread did the paint become RED, and when did the AXE
come into it ?
Now Dan, I'd like you to sit back and make yourself comfortable, relax and
try to think only nice, pleasant thoughts. Tell me:
Have you stopped chopping people up and putting them in the freezer ?
(YES/NO)
Wishing you a speedy recovery ;-)
--
Duncan Gray
(warning: may contain traces of nut)
Post a reply to this message
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