View Full Version : Opacity

10-07-2011, 03:19 PM
Is there a way to make a surface reveal its insides by making that surface ALMOST transparent?

10-07-2011, 04:37 PM
pics, references?

yes, surfaces can become transparent, but what are you trying to accomplish anyway?

10-08-2011, 05:35 AM
I want to be able to see what is inside an object.

10-08-2011, 05:41 AM
Here are screen shots.

10-08-2011, 07:57 AM
So you want the triangle to be translucent?

If you want the triangle to look like Glass, and are willing to do a bit of trial and error, do a quick search on how to use the Dielectric shader in nodes.

This is what the Dielectric shader does: http://www.youtube.com/watch?v=qOWM-Ci5F5M

If you want just simple transparency, do the following:

Select only the triangle polygons (all of them), making sure you dont have the sphere's polys selected.

Press q on the keyboard and give the triangle a different surface name.

Press Enter when done, then press F5 to enter the surface editor, select the new trangle surface (whatever you called it), and change the transparency percentage to whatever you want and looks best.

Hope this helps.

EDIT: (Dielectric is pretty simple, however requires an understanding of nodes. Essentially after you have created the new surface, open the node editor for that surface, add a New Dielectric Material node, open its properties, choose the colour, change the refraction index to the material you want to emulate, this is fairly good guide: http://www.robinwood.com/Catalog/Technical/Gen3DTuts/Gen3DPages/RefractionIndexList.html, absorption is how much light it takes in etc.)

With most things, and especially the dielectric shader, it needs stuff to reflect to look good otherwise it will look very bland. It usually also typically adds a lot to the render time.

10-08-2011, 01:16 PM
The surface needs to be double sided too, or the inside will not be visilbe.

10-08-2011, 07:31 PM
Whoops, completely forgot about that.... :(

Thanks for the save. :)