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Syringes

Posted: Mon Jun 09, 2008 11:23 am
by neo0.
Image

The glass looks a little too prism like.


I used the glass preset (specular material.) I wasn't sure what to put for the scattering coefficient or the cauchy b.

Posted: Mon Jun 09, 2008 11:38 am
by kwistenbiebel
Good start, but I don't see the connection between the medical and the wiimote....

Posted: Mon Jun 09, 2008 12:12 pm
by neo0.
For some people, Wii is like a drug craze.

What should I put for the cauchy b and the coefficient?

Posted: Mon Jun 09, 2008 1:17 pm
by kwistenbiebel
Well, I think people won't automatically make the connection between the syringes and drugs in this image, unless something more of a clue is given.

Can't help you with cauchy b and coefficient, sorry.
The trick will be getting the 'precedence' for both media (glass and fluid) correctly.

Maybe the material experts on this forum can be of assistance...

Posted: Mon Jun 09, 2008 2:22 pm
by neo0.
Yep, I set the precedence for the glass to be higher than the fluid.

Posted: Mon Jun 09, 2008 8:51 pm
by mr_jo
neo0. wrote:Yep, I set the precedence for the glass to be higher than the fluid.
Hi neo, maybe the fluid should have precedence higher than the glass

Posted: Mon Jun 09, 2008 11:20 pm
by PureSpider
No, the glass precedence higher than the fluids is just fine, just use a b_coeff of 0 for the glass as the coefficient marks the dispersion (prism effect) of the glass

Posted: Mon Jun 09, 2008 11:30 pm
by mr_jo
PureSpider wrote:No, the glass precedence higher than the fluids is just fine
sorry guys, I've problems with my bad english :oops:
zsouthboy wrote:Precedence allows you to model volumes without having to hack them up to put them inside one another.

For example, you can enclose your scene with a SSS air volume for a fog effect, and give it a precedence of 1.

If you have another volume (say a cup of water) in your scene inside the air, you just choose a higher precedence for it to "displace" the lower precedence volume, so 2 or higher.

and put a piece of SSS plastic in that water -> precedence of 3 or higher.

The SSS plastic will automatically displace the fog and the water, and the water will automatically displace the fog.
http://www.indigorenderer.com/joomla/fo ... php?t=4272

Posted: Tue Jun 10, 2008 2:41 am
by Kram1032
mr_jo, the glass still has to have higher precedence than the fluid ;) (except neo0. modelled the syringes as if they are solid glass cylinders and added a fludicylinder, to get the hole...)
How ever it might be, precedence looks right, here.
I only never saw a glass syringe - they usually are made of plastic with close to no chromatic dispersion....

Posted: Tue Jun 10, 2008 3:05 am
by mr_jo
Kram1032 wrote:mr_jo, the glass still has to have higher precedence than the fluid ;)
thanks Kram I'm sorry for my misunderstood :oops: :oops:
P.S. I have a doubt :?:
example: if I have a glass with prec=1 and a fluid whit prec=2 this for me means that the fluid has higher precedence (2 major than 1), is correct? or the minor number (1) means higher precedence?
Sorry again

Posted: Tue Jun 10, 2008 3:09 am
by mr_jo
Kram1032 wrote: I only never saw a glass syringe
ooohhhh I remember it very well :shock: :shock: :shock: when I was child the syringer was made of glass and let it boiled in a can before the sting, and I was terrorized of them :D :D :D :D

Posted: Tue Jun 10, 2008 3:10 am
by zsouthboy
The precedence number should be interpreted literally.

Precedence of 2 is higher than 1, therefore material with precedence 2 will "displace" material with precedence 1.

Posted: Tue Jun 10, 2008 3:26 am
by mr_jo
zsouthboy wrote:The precedence number should be interpreted literally.
Precedence of 2 is higher than 1, therefore material with precedence 2 will "displace" material with precedence 1.
ok thank you zsouthboy;
so I'm a little confused with precedence (or the fault is of my bad english :oops: ); did you see my render of "pinocchio"? well if the precedence of my water is 10 and I decide to put a bottle of glass underwater, wich precedence should I assign to the glass?

Posted: Tue Jun 10, 2008 3:39 am
by zsouthboy
Glass needs to be 11 in that case.

Make sure you model the thickness (but I think you understand that already) :)

EDIT: And your english is fine - I think you're having a tougher time understanding us than we are of you. :D

Posted: Tue Jun 10, 2008 3:50 am
by mr_jo
zsouthboy wrote:Glass needs to be 11 in that case.
ok, I'm in, thanks zsouthboy
zsouthboy wrote:Make sure you model the thickness (but I think you understand that already) :)
yes, yes is the first thing I've learned :)
zsouthboy wrote:EDIT: And your english is fine - I think you're having a tougher time understanding us than we are of you. :D

:D :D :D