How to show just the frontside of the mesh

[Yime Benites]

Hi, I need help with a human body transparent.

* I want to display just the frontside of the body and intern organs.

* I want hide the backside of the body.

link to model: http://52.74.240.184/questions/body/index.html

link to code: http://52.74.240.184/questions/body/js/file.js

I'm new developing with Babylon and I need similar examples or ideas about how to fix my problem. thanks

[V!nc3r]

It looks like a difficult objective to reach, i don't know if a 3d engine can check alpha order on the same mesh.

Maybe you can try a big fake : don't use alpha on the body material and assign a diffuse color similar to the background, keep the fresnel effect, then play with the zOffset of organs material. I don't guarantee any result

[adam]

Yeah, I think you should probably stay away from transparency and use a renderingGroupId = 1 for your organs.

https://doc.babylonjs.com/classes/2.3/AbstractMesh#renderinggroupid-number

Edit:  renderingGroupId won't be a good solution if there are other meshes in the scene that need to appear in front of the organs.

[GameMonetize]

I guess you can do what you want by forcing backface culling on your material. Did you turn it off?

[gryff]

Hi @Yime Benites, welcome to the forum

What you are seeing with the ears is the front side of the mesh (see image below).

The faces coloured red are the outside as the mesh is folding back on itself.

You may have to eliminate that folding back to solve your problem.

cheers, gryff

[Yime Benites]

On 6/16/2016 at 8:05 PM, V!nc3r said:

It looks like a difficult objective to reach, i don't know if a 3d engine can check alpha order on the same mesh.

Maybe you can try a big fake : don't use alpha on the body material and assign a diffuse color similar to the background, keep the fresnel effect, then play with the zOffset of organs material. I don't guarantee any result

Hi V!ncer, I tried your Idea but it didn't work. thanks.