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Trying to nail down the LEGO material

Posted: Sat May 23, 2020 10:57 pm
by Lights_and_Shadows
Hey folks, been a while :)

Still tackling my long-running LEGO passion project lol. idk if some settings were adjusted between updates in the past few months, but I for the life of me cannot seem to nail down a proper SSS effect for the bricks. Really noticed it when making the light blue (or Maersk blue) color. My version is lighter than the photo reference I am using here:
Swooshable Flickr photostream sample

Swooshable also provides RGB hexadecimal values for the colors, which I am using.

My version:
luxcore_lego_test.png
Node setup:
luxcore_nodes.png

Re: Trying to nail down the LEGO material

Posted: Sun May 31, 2020 11:55 pm
by Lights_and_Shadows
I figured out what I was trying to do, thanks to Sharly's tutorial from 2.79. Works wonderfully. :)

Re: Trying to nail down the LEGO material

Posted: Sun Jul 05, 2020 4:51 pm
by Lights_and_Shadows
Alright, this is more for those specialty materials that were found only in Bionicle sets. These were quasi-metallic -- more of just the regular AB plastic with a metallic paint applied, but I found a few that have more than one color in their reflections, so-called "flip flop" colors. Is there a way to have a material change color based on viewing angle or so I have to settle with a close guess?

One such example, pulled from Ryan Howerter's Flickr feed (a great resource for those who are also interested in this, check it out :D)
Screenshot_2.png
In Cycles this could be done using the Fresnel node as the mix factor for combining two materials, but idk if Luxcore has a similar function (planned or otherwise)

Re: Trying to nail down the LEGO material

Posted: Sun Jul 05, 2020 5:43 pm
by Sharlybg
Try to experiment with absorption color in luxcore shader node. It can change color depending of the view angle. i use this effect for my carpaint tut here :

https://youtu.be/KFbk_JxPUj4

Re: Trying to nail down the LEGO material

Posted: Mon Jul 06, 2020 5:02 am
by Lights_and_Shadows
Sharlybg wrote: Sun Jul 05, 2020 5:43 pm Try to experiment with absorption color in luxcore shader node. It can change color depending of the view angle. i use this effect for my carpaint tut here :

https://youtu.be/KFbk_JxPUj4
That did the trick. Thanks, Sharly! :D That just earned you another like on that vid

Re: Trying to nail down the LEGO material

Posted: Mon Jul 06, 2020 9:37 am
by Sharlybg
That did the trick. Thanks, Sharly! :D That just earned you another like on that vid
Happy that it help you ;)