How to assign material to scattered objects?

Forums Technical Discussion How to assign material to scattered objects?

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iron100: Member; 20 posts; Joined: July 2016; Offline

Jan. 2, 2019 12:26 p.m.

I created scatter objects using Heightfield Scatter and can't assign material to them. I need to create effect of night city lights, so I try to apply emission material, and it doesn't work. How to do it?

Edited by iron100 - Jan. 2, 2019 12:27:01

Attachments:
screenshot_334.jpg (29.0 KB)
screenshot_335.jpg (51.3 KB)
screenshot_337.jpg (59.5 KB)


mrCatfish: Member; 731 posts; Joined: Dec. 2006; Offline

Jan. 2, 2019 4:50 p.m.

Can you share your hip file?

Sean Lewkiw
CG Supervisor
Machine FX - Cinesite MTL


iron100: Member; 20 posts; Joined: July 2016; Offline

Jan. 2, 2019 5:14 p.m.

mrCatfish
Can you share your hip file?

Of course, here he is.

Attachments:
Scatter.hip (609.3 KB)


mrCatfish: Member; 731 posts; Joined: Dec. 2006; Offline

Jan. 3, 2019 10:31 a.m.

I extracted your spheres into another object and it works as expected.

Attachments:
Scatter.2.hipnc (636.3 KB)

Sean Lewkiw
CG Supervisor
Machine FX - Cinesite MTL


iron100: Member; 20 posts; Joined: July 2016; Offline

Jan. 3, 2019 5:05 p.m.

mrCatfish
I extracted your spheres into another object and it works as expected.

Thank you very much. Are these groups (“height” and “mask”) assigned automatically?

And one more question. Can I scatter light sources in the same way instead of geometry? I remember trying to do it, but without success.

Edited by iron100 - Jan. 3, 2019 17:05:45


toadstorm: Member; 359 posts; Joined: April 2017; Offline

Jan. 3, 2019 6:17 p.m.

You can instance lights using old-school object instancing (the Instance object), but not within SOPs like you would with a Copy SOP.

MOPs (Motion Operators for Houdini): http://www.motionoperators.com [www.motionoperators.com]

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