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Per-vertex color data from splines

Posted: Mon Jun 14, 2021 3:49 pm
by speltrong
Hi

Is it possible to get per-vertex color data from splines yet? This would particularly be helpful in x-particles where trail splines can change color based on certain criteria that would be very difficult to match with w-coordinate

Thanks!

-s

Re: Per-vertex color data from splines

Posted: Mon Jun 14, 2021 6:12 pm
by aoktar
There's not any attribute that contains color for vertexes of splines. xpTrail is a special object and latest build has support to read this data. See my example for that.

Re: Per-vertex color data from splines

Posted: Mon Jun 14, 2021 7:47 pm
by speltrong
Thanks @aoktar!

Good to know that that's data that's specific to the xpTrails object and not the spline itself

-s

Re: Per-vertex color data from splines

Posted: Mon Jun 14, 2021 7:51 pm
by aoktar
speltrong wrote:Thanks @aoktar!

Good to know that that's data that's specific to the xpTrails object and not the spline itself

-s
Yes, do you know another method to paint splines?

Re: Per-vertex color data from splines

Posted: Mon Jun 14, 2021 9:13 pm
by speltrong
You can change the display color of the spline. Redshift and Arnold can pull that data and you can feed it into the different channels.

Re: Per-vertex color data from splines

Posted: Mon Jun 14, 2021 9:35 pm
by aoktar
speltrong wrote:You can change the display color of the spline. Redshift and Arnold can pull that data and you can feed it into the different channels.
It's not for vertex painting, and using many hair nodes are bottleneck for performance.

Re: Per-vertex color data from splines

Posted: Mon Jun 14, 2021 10:19 pm
by speltrong
got it - thanks!

Re: Per-vertex color data from splines

Posted: Thu Feb 22, 2024 4:01 pm
by Ofcourse
Hi @aoctar please are you aware of bug while I use a deformer with xpTrail object which has color stored please? With deformer the Octane does not render stored colors

Re: Per-vertex color data from splines

Posted: Thu Feb 22, 2024 5:19 pm
by aoktar
Ofcourse wrote:Hi @aoctar please are you aware of bug while I use a deformer with xpTrail object which has color stored please? With deformer the Octane does not render stored colors
Yes, check my past answers.

Re: Per-vertex color data from splines

Posted: Thu Jun 20, 2024 1:40 pm
by Ofcourse
Hello, I have installed recent version of Octane and I have found out that this bug is still in this version, are you aware of this bug being really bad? Let me know please.