Shader who change with normals object?

[johnjoe]

I want to have a shader who change if the normal object is toward the camera or not ... and I can't ...
thanks for your help !

chris.

[atyss]

You can try to toy with the Incidence node (Illumination > Incidence). Choose the default mode, Camera Direction.

If you plug this node into the transparency, you will notice that the more the normal faces the camera, the more it is visible. On a cylinder, the sides will be transparent, because the normal are pointing away from the camera.

To tweak the effect, you can plug the node into Color_Correction, Invert, or any color adjustment node.
Also, the Incidence node can be used for almost anything: Reflectivity, Diffuse, Incandescence....

Hope this helps
Salutations - Cheers
Bernard Lebel

[pnoizat2]

there is a front/back switch node in there somewhere.
it lets you render different properties depending on the face direction.