Hi,

I was trying to build a jellyfish using CSG, and I get this unexpected
result - I guess that my ior setting is too high.

I have decided to use CSG rather than patch object, because I want to fill
the Jellyfish with media. My final goal is to use ISO_CSG but I did not
check if the interior is well define so media can be used.

chaps.

Post a reply to this message

Attachments:
Download 'meduse.jpg' (19 KB)

Preview of image 'meduse.jpg'

> I have decided to use CSG rather than patch object, because I want to fill
> the Jellyfish with media.

FYI, patch objects, even non-solid ones I believe, can be filled with media.

 - Slime
[ http://www.slimeland.com/ ]

Post a reply to this message

chaps -

To make sure to get a good result with complex objects or high ior,
you're going to want to set max_intersections to be pretty high (like 20
or 30).  It looks like some of the black near the bottom of the
"jellyfish" is due to using the default max_intersections value of 5. 
Even without using a high ior value, a max_intersetions value too low
can cause artifacts with media, as well!

Try setting this value higher and see what happens.

- ben

Post a reply to this message

Speaking of jellyfish IOR, it is rather close to water IOR (JF is water at
99% ) so if you plan to trace you JF underwater, you don't need high IOR.
Be carefull to set max_trace_level high enough in global settings.
Marc

Post a reply to this message