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Opacity gradient controlled by Xpresso

Posted: Mon Sep 24, 2018 3:35 pm
by Nando_The_Fly_Design
Greetings to all.

I am trying to create this same effect of degraded transparency for a group of objects, all controlled with nulls in Xpresso.

This is the example:
https://vimeo.com/109315806

The C4D gradient has a linear 3D mode and a "Global" mode.

But I can't do the same with Octane material, neither with an Octane gradient nor with a C4D gradient.

I have found a more sloppy solution which is to apply a linear projection to the group of objects and animate this projection, but, in my case, I try to make the gradient "appear" by covering all the objects of the null and their materials. It doesn't work.

It would be like a gradient effect that paints all the objects of the group (that already have each one their material).

Any idea? thank you!

Re: Opacity gradient controlled by Xpresso

Posted: Tue Sep 25, 2018 10:55 am
by bepeg4d
Hi,
please have a look at this possible solution:
xpressogradientplane.zip
(87.76 KiB) Downloaded 333 times
4BE6D4D4-EA09-441C-B00D-68F78BEA4B18.jpeg
It works in a slightly different way, one plane is used to position the gradient, while the other one is used to scale it.
ciao Beppe

Re: Opacity gradient controlled by Xpresso

Posted: Tue Sep 25, 2018 11:58 am
by Studio21
Thats a useful rig beppe, TY! :)


ive been trying for a while to figure out how "break up" the gradient edges with noise, like its possible in the C4D gradient using the turbulent noise. u think its possible with the octane gradient somehow Beppe?

best,
G

Re: Opacity gradient controlled by Xpresso

Posted: Tue Sep 25, 2018 1:35 pm
by bepeg4d
Hi,
yes sure, you can use an Add node with the Marble node before the gradient node, with the same projection:
F9EE074A-29A4-4CEC-B227-090270096396.jpeg
ciao Beppe

Re: Opacity gradient controlled by Xpresso

Posted: Tue Sep 25, 2018 8:46 pm
by Studio21
sweet! thx Beppe :)

Re: Opacity gradient controlled by Xpresso

Posted: Sat Sep 29, 2018 7:47 am
by Nando_The_Fly_Design
Thank you so much Beppe!