Forums Solaris and Karma Houdini/Solaris lights color cycling

Houdini/Solaris lights color cycling

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wayward
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This might be a very basic question - but I'm stuck.

In Solaris I have set up lights. I want to cycle the light colors over time.

Is there a way to set up a ramp/cycle for the Color on the Base Properties tab that will affect lights?

I see Light Filters on the Base Properties tab. That seems to work to tint lights for Karma. But it doesn't affect the lights for Redshift.

What's the best way to animate the light color that will work with Karma/Redshift/etc?

Anyone know of a tutorial or documentation to explain how to do this?

Thanks!
Pete
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goldleaf
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Light Filter support will need to be added to Redshift itself.

Animated color and light can be keyframed manually, or you can animated them with a VOP; attached are some suggestions. Hope this helps!

Attachments:
light_colors.jpg (65.3 KB)
animated_light_color.hip (742.2 KB)

I'm o.d.d.
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wayward
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This is very helpful. Thank you goldleaf!

Pete
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j00ey
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here's another suggestion using CHOPs

Attachments:
animated_light_color_CHOP.hiplc (757.4 KB)

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wayward
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Another excellent approach. Thanks j00ey!

For any of these methods would I need to export a usd frame range sequence to get the animated values or are the expressions preserved in the usd file?

I'm going to test it both ways but I thought I'd ask to help confirm results.

Pete
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j00ey
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I'm pretty new to LOPs but as I understand it the values get authored as time samples, USD has no concept of Houdini expressions etc.

Attached is an ascii file with 20 frames of just the light in it, you can see how it's structured there.

Attachments:
coloured_light.usda (2.2 KB)

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