Zandria Ross | Lighting Artist
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​Light Path Expression (LPE)  Script and UI


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Problem


Setting up LPE per shot is a slow and tedious process.

Solution


Create a User Interface that will easily create AOV for each light group.

How To Use


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  • In your light's shape, define a custom name to create a light group. (Arnold > Visibility > AOV Light Group)
  • Next, run the script LPE Script. The script should pop up on the right side.
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  • Select which AOVs are needed in the shot.
  • The script will create the proper AOVs for each light group found in the scene.
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  • Render and import files into Nuke. I used an AOV Splitter (source link) to quickly organize and merge all the shuffles together.

Many credits to Arvid Schneider.
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  • Demo Reel
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  • Doll Story