Mograph tracer not rendering in picture viewer

[Labrats]

Hi all,

I want to render a traced, animated clone in octane. The clone (sphere) is traced by a mograph tracer object. The animation is triggered with a plain effector. In the live viewer everything seems fine, in the picture viewer it renders nothing. Any ideas what I'm doing wrong? Tried to cache the cloner, but that didn't work.

file in attachment.

Greetz,
J

Dna Helix_Reduced.rar

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[aoktar]

Are you just checking on current frame? It's rendering fine if you render at some frame range.

[Labrats]

yes, if I render it completely (from 0 to 250), it works, but the moment i use current frame, or try to render from a different frame then 0, it doesnt show anything. Even if I cache it.

[aoktar]

Have you checked with standard render too? It's not a issue of Octane plugin.

[Labrats]

I'll check it and let you know, thx!

[Labrats]

Ok I'll post the solution for anyone else having this problem. After some research on native cinema 4d + tracer (i was first looking for octane +tracer but didn't found anything specific on the matter), I found out that the tracer only renders in the picture viewer if you start it from frame 0.

The way around this is exporting your tracer to "alembic", and merge it back in. On import, Don't forget to tick on the option "curves". It is possible you have to scale it up in the alembic options of your newly imported object, but then it's fully baked, and can be rendered in the picture viewer. And ofcorse also in octane, if you put a octane object tag on it, and activate 'render as hair'.

Some remarks:
- Make sure your on frame 0 when exporting, if not, sometimes this can cause unwanted behavior when importing back. To be sure, hit the rewind button several times to make sure the tracer is back on his "zero-point"
- You can import it back as hair or as curves. Hair seems to go faster in the viewport, but (i'm not sure) renders slower in octane then splines with an octane render tag on it

Cheerz!
Jean

[Meshmashuk]

You just saved my arse using Redshift! (I'm also an Octane user)

Had exactly the same issue so thanks for posting such a clear solution.