PDA

View Full Version : help for an inner lighted translucent plastic

funerium
07-22-2009, 11:04 PM
Hi,

i decided to create a sort of toy (http://img198.imageshack.us/img198/822/toymaill.jpg) for kids and need to create a shader who looks like this (http://m2.sourcingmap.com/smap/images/item/catalog/ux_a08091800ux0057_ux_c.jpg) a soft gummy plastic who get an inner light who pass throught the plastic.

i am testing (http://img33.imageshack.us/img33/4650/bulbytestrendertop.jpg) with a mia sss fast simple shader, a point light in and behind, but i get a problem, with sss the material doesn't emit light and looks dull (http://img31.imageshack.us/img31/6505/dullbulby.jpg), i tryed to increase the settings of the diffuse but i gets some weird things, the sss gets bad when i check the photon emission of my area light ( no intensity)


if i increase the settings of the unscattered diffuse layer i will not see the effects, and do not resolve the fact that the light in the bulb doesn't pass throught, i tryed to plug a mia light surface on the shading group photon shader nothin happened, other thing , the sss is very tricky to adjust and depends too much of the other lights while the inner light should do 99% of the work...

finally i am wondering if sss is the good material and if you gets some advices...

working with maya 2008

thanks
Theodocious
07-24-2009, 05:39 AM
try a Mia_material_X with 50-60% transparency and translucency turned on. play around with the advanced refraction settings as well (color to max dist etc)
funerium
07-25-2009, 10:00 PM
hi, thanks for the reply, i finally done it with a crappy lambert, it looks better (http://img41.imageshack.us/img41/7601/bulbyface.jpg)
i'll add some textures soon to get rid of the super smooth aspect, dunno what's your opinion, but now i get troubles with the blue stripes who generate those strange blue rounds need to work on it ^^ something weird happened with the miamaterial, the bump section in the material is "empty", it does'nt get any slot to put a bump node, it only have a check box with "no diffuse bump", normal? but i see a mental ray bump node just bellow in the advanced section
techmage
07-26-2009, 08:22 AM
ya your mia should have two bump slots, if it doesnt, youll prolly have to reinstall maya

and the mia material translucency is what you wanna use

model the object so the walls have actual thickness, make sure the thinwalled setting is off on the mia shader. Should produce some good results. Also, I am pretty sure that light will get through the transclucent mia material
CGTalk Moderation
07-26-2009, 08:22 AM
This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.