Transparent materiality

General discussion about Indigo Materials - material requests, material developement, feedback, etc..
Post Reply
9 posts • Page 1 of 1
Ianev Margarita
Posts: 1
Joined: Wed Nov 30, 2011 2:25 pm

Transparent materiality

Post by Ianev Margarita » Wed Nov 30, 2011 2:36 pm

Hi,
Trying to create a render from sketchup into indigo that is semi- translucent and emits a light. A bit like the image, any ideas on how to create this?
Attachments
zha_jsbach_03x.jpg

User avatar
zeitmeister
2nd Place 100
Posts: 2010
Joined: Tue Apr 22, 2008 4:11 am
Location: Limburg/Lahn, Germany
Contact:

Re: Transparent materiality

Post by zeitmeister » Wed Nov 30, 2011 8:40 pm

Maybe a diffuse transmitter material could help you here.
Cheers, David



DAVIDGUDELIUS // 3D.PORTFOLIO
·
Indigo 4.4.15 | Indigo for C4D 4.4.13.1 | C4D R23 | Mac OS X 10.13.6 | Windows 10 Professional x64

User avatar
Zom-B
1st Place 100
Posts: 4700
Joined: Tue Jul 04, 2006 4:18 pm
Location: ´'`\_(ò_Ó)_/´'`
Contact:

Re: Transparent materiality

Post by Zom-B » Wed Nov 30, 2011 8:49 pm

I would start with the "Diffuse transmitter" material, that should do the job. Blended together with some Phong material with a exponent of 32 and a little higher IOR, since it gets reduced my blending (maybe 2).

After testing the approach above I would try blending a "Glossy transparent" Material into the phong with very low exponent of 4 and a IOR of 1.8.. Adding SSS to this material maybe needed.

So You End up with a material like attached.

Blending for sure needs to be modified, depending on your scene.
Attachments
Test Material.jpg
Test Material.pigm
(767 Bytes) Downloaded 414 times
polygonmanufaktur.de

User avatar
CTZn
Posts: 7240
Joined: Thu Nov 16, 2006 4:34 pm
Location: Paris, France

Re: Transparent materiality

Post by CTZn » Wed Nov 30, 2011 9:02 pm

Zom-B wrote:So You End up with a material like attached.
NB: it has two blend materials within as described by Zom-B, one will work best with drape-style geometries (single faces) and the other with sealed, volumetric shapes (exclusively save for spare exceptions).
obsolete asset

User avatar
Zom-B
1st Place 100
Posts: 4700
Joined: Tue Jul 04, 2006 4:18 pm
Location: ´'`\_(ò_Ó)_/´'`
Contact:

Re: Transparent materiality

Post by Zom-B » Wed Nov 30, 2011 9:15 pm

Actually it is a multi-clustered blend where the DT material ist the Master that should be used.
The DT is mixed by 50% with a Phong that itself is mixed to 50% with a Glossy T. Material...
polygonmanufaktur.de

User avatar
CTZn
Posts: 7240
Joined: Thu Nov 16, 2006 4:34 pm
Location: Paris, France

Re: Transparent materiality

Post by CTZn » Wed Nov 30, 2011 9:28 pm

Good point, I misread the IGM instead of doing the obvious thing :roll: :lol:

So it may not work as expected on open volumes, is this correct ?
obsolete asset

User avatar
CTZn
Posts: 7240
Joined: Thu Nov 16, 2006 4:34 pm
Location: Paris, France

Re: Transparent materiality

Post by CTZn » Wed Nov 30, 2011 9:37 pm

and emits a light
The fabric ?

I thing that's backlighting we see into the image, well there's an army of spots all around.
obsolete asset

User avatar
Jay-ko
Posts: 138
Joined: Mon Nov 12, 2012 7:28 pm
Location: Paris

Re: Transparent materiality

Post by Jay-ko » Fri Jan 23, 2015 5:12 am

okay, I exploring a quite same subject and I hope to have some clues to know what's happens.

I do not understand why a volumetric mesh do not work in all the sides. (see the picture with the openGL preview).
My scene is simply lighted by a HDRI (+7 in the sun disk)


The material assign to the fabrics of the umbrella is a simple DT.
My test-images linked with that post present misterious shadows/black surface "onto" the umbrella with a volumetric meshes.
But I obtain the same result with a single-faced object and I double checker the normal.

Notice that particular zone in the image do not really change color when I play with the tone mapping.
Attachments
PrtScr capture_7.jpg
back.jpg
errare humanum est

User avatar
Jay-ko
Posts: 138
Joined: Mon Nov 12, 2012 7:28 pm
Location: Paris

Re: Transparent materiality

Post by Jay-ko » Wed May 25, 2016 12:51 am

Hello, I answer my self for give some clues to an other users with the same kinf of problem:

I do a misunderstanding between, double sided thin materail an diffuse transmitter.

The correct material that I need to use to do that is the Double sided thin material.

be carefull to the exponent when you use an phong, because it multiplied itself with the parameters into the "double sided thin"
errare humanum est

Post Reply
9 posts • Page 1 of 1

Who is online

Users browsing this forum: No registered users and 11 guests