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Stjarna

Fresnel / edge falloff shader

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Hello everyone !

I hope this is the right place to ask, if not, sorry ! 

I've been using houdini for a few years now, but mostly for FX and I am not familiar with shaders at all. I've been looking for an answer everywhere for days, but I think I definitely need to ask here, I'd like to create a "simple" (nothing is "simple" in houdini haha) fresnel / edge falloff shader, like the picture below. I've found this thread  https://forums.odforce.net/topic/15808-fresnel-refrlection/

with cool answers from Jeff, but first, i'm quite lost in those material vops, as I'm not used to those nodes at all, and second, this is reflecting light, which I do not want, and I've tried to tweak those a bit to remove this but clearly i don't understand how it works, and can't get what I want. 

My wish is very basic (at least to me) a simple black color with colored (emitting maybe?) fallof edges like this, but thinner, so like having a ramp to control fallof i suppose : 

image.png.d4914605ab5c471f1b74b16b988fc541.png

 

If i could get any help that would be so much, much  appreciated, thanks a lot ! and happy holidays :)

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that works almost perfectly, thank you very much for that quick and efficient answer ! :) (and i feel dumb because it's really just 3 nodes, but well I didn't know them ^^')

I'd also look for controlling the "thickness" of the falloff outline, but the edge falloff controller on the node mostly darkens the effect when you lower it. i'm not sure how to explain this properly, i mean right now the falloff effect is a bit "blurry" and I'd like to control it for making it sharper ? so it's get more cartoon-ish ? If you see what I mean

 

Anyway, thanks again for your help ! 

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Oh, sorry I didn't see the answer ! thank you very much for those (and the more fun page is neat too ! )

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