France
Joined: Nov 7, 2005
Post Count: 9426
Status:
Offline
Re: Lampshade transparency
Be sure to give the lampshade a color darker than white otherwise it will be rendered completely transparent. You can test also with textures but it might be buggy like here.
----------------------------------------
Emmanuel Puybaret, Sweet Home 3D creator
France
Joined: Nov 7, 2005
Post Count: 9426
Status:
Offline
Re: Lampshade transparency
Tic if you want to know these values, just create an empty document in which you copy/paste only the lampshade and then export it to OBJ format.
----------------------------------------
Emmanuel Puybaret, Sweet Home 3D creator
Joined: Sep 27, 2011
Post Count: 8
Status:
Offline
Re: Lampshade transparency
Emmanuel, I'm back after more tests: I think that the bad rendering is due to the Obj export method of the modelling software I use (Wings3D).
On the left you can see your original lampshade and on the right the same object imported in wings3d and then re-exported as .obj. I manteined the same mtl file for both.
France
Joined: Nov 7, 2005
Post Count: 9426
Status:
Offline
Re: Lampshade transparency
If the mtl file is the same in both cases, it's probably due to some normals that were changed in Wings3D.
----------------------------------------
Emmanuel Puybaret, Sweet Home 3D creator
Joined: Sep 27, 2011
Post Count: 8
Status:
Offline
Re: Lampshade transparency
You're right, I find out that SH3D and wings3d generate different normal directions: while in SH3D vertex normals are orthogonal to faces, in wings3d they spread out radially; Also the amount of normals and faces is different.
This affercts somehow surface reflection and material refraction.
I tried to export form wings3d to 3DS and then import in SH3D but unfortunately the resutl is quite the same.
So I think there's no way to solve the problem if I want to keep on modelling in wings3d
Joined: Sep 27, 2011
Post Count: 8
Status:
Offline
Re: Lampshade transparency
Thank you guys for your suuport and suggestions! Even though I am not as much familiar with AoI or MM3D as I am with Wings3D, I'll try them. At the moment there is no other choice for me since I have no knoledge in processinig data files... but it could be a challange for the future, never say never...
