Arnold for Cinema 4D Forum
Rendering with Arnold in CINEMA 4D using the C4DtoA plug-in.
Showing results for 
Show  only  | Search instead for 
Did you mean: 

Xparticles Trail with Volume

Message 1 of 5
371 Views, 4 Replies

Xparticles Trail with Volume

I am unable to get x-particle trails working as an arnold volume, with different color trails.

The effect I'm going for is a typical long-exposure of car lights kind of thing.

I can use a mesher but then I cannot make each trail have it's own color (also the mesher feels heavy..). I can use fracture on the mesher to get different colors but for some reason it no longer animates.

Any advice is HIGHLY appreciated.

Thank you

Labels (3)
Message 2 of 5
in reply to: Anonymous

Have you tried increasing motion blur length instead to simulate this effect?

Lee Griggs
Arnold rendering specialist
Message 3 of 5
in reply to: Anonymous

Unfortunately trails are currently limited and the plugin can not read their color from XP. But you can generate random colors or use the id to control shading, as described here:

Message 4 of 5
in reply to: Anonymous

Thanks @ Peter

I am able to get the volume material working using xpEmitter with tracer and sweep, but then can’t assign random colors to my sweep elements. Any suggestions?

Message 5 of 5
in reply to: Anonymous

The problem is that Sweep generates one mesh and the information of individual trails is lost. If you could generate one mesh per trail you can use the object id to generate random color. But I have no idea if that's possible.

Can't find what you're looking for? Ask the community or share your knowledge.

Post to forums  

Technology Administrators

Autodesk Design & Make Report