how to make a gray transparency sillouette

# 1 18-05-2012 , 05:44 PM

Registered User
Join Date: Dec 2011

Posts: 4

Hi, I am doing an architectural render. I am trying to make the 3d people just to look as a gray transparency sillouette. I have tried the surface shader and the map shader, but when i manipulate the transparency, in the render looks like a glass figure. Is there any other way to do this? or any other adjustment in the shader?

Quote

# 2 18-05-2012 , 06:55 PM

Super Moderator
Join Date: Dec 2006

Location: South FL

Posts: 3,522

I don't quite understand. Do you have human models in the scene and you want them to look like grey cutouts or do you have texture mapped cards?

- Genny
__________________
::|| My CG Blog ||::
::|| My Maya FAQ ||::

Quote

# 3 18-05-2012 , 08:46 PM

Registered User
Join Date: Dec 2011

Posts: 4

I have human models imported from fbx transformed to polygons. Thanks for answer

Quote

# 4 18-05-2012 , 10:15 PM

The thin red line
Join Date: Aug 2009

Location: England

Posts: 4,472

If you want to have a 3d transparency you will need to fill the mesh with some thing like particals or fog and make the mesh invisable..............dave

Avatar Challenge Winner 2010

Quote

# 5 19-05-2012 , 04:20 PM

Super Moderator
Join Date: Dec 2006

Location: South FL

Posts: 3,522

If you want the people to be grey and semi transparent then you have to set the refractive index to 1 so it doesn't bend light and look like glass. That is, if I understand that's the effect you're after.

- Genny
__________________
::|| My CG Blog ||::
::|| My Maya FAQ ||::

Quote

# 6 20-05-2012 , 03:56 AM

Registered User
Join Date: Dec 2011

Posts: 4

some tries

Hi, i made some tries of it with surface shader, volume shader, fog and particles connected to a mia_material_x but still don´t works as i need. What i am looking for is something like the second image ( a render of zaha hadid)

Attached Thumbnails

Click image for larger version

Name: test.jpg
Views: 239
Size: 293.9 KB
ID: 51394

Click image for larger version

Name: ZH.jpg
Views: 242
Size: 131.1 KB
ID: 51395

Quote

# 7 20-05-2012 , 01:43 PM

EduSciVis-er
Join Date: Dec 2005

Location: Toronto

Posts: 3,374

The surface shader is almost there... so you could render out those figures in a separate pass and then just bring down the opacity when you composite it in photoshop or something.

-stwert

Website - Blog - YouTube - Vimeo - Facebook - Twitter

-->How to Effectively Ask Questions on Forums<--

Quote

# 8 20-05-2012 , 10:30 PM

Lead Modeler - Framestore
Join Date: Feb 2003

Location: UK

Posts: 6,287

why dont you render the characters on a separate blank background with an Alpha channel, then just make them gray in PS save them out as a targa 32bit. Also make the alpha channel grey so you have a slight transparency to them. Then just place the characters on 'cards' (poly planes)in the scene instead of the full 3d characters - it will save on polys in the scene and should render faster

Jay

Quote