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Custom declared coordinate system

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Anonymous
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Custom declared coordinate system

Hello everyone

I am trying to write a custom shader to do an effect. I need to be able to reference the coordinate system of an object in the scene so that I can do some shading in relation to that position.

How do I tell Maya to insert an object into the scene as a coordinate system to which I can transform my shading points using OSL's transform("myCoordSys", P)?

Thanks so much

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Message 2 of 3
Anonymous
in reply to: Anonymous

Hello there, any chance to get this questions passed the moderation phase?

Message 3 of 3
Stephen.Blair
in reply to: Anonymous

I don't think Arnold supports anything other than the coordinate spaces listed in the OSL language specification. There's a version of transform() that takes an actual matrix. You could store the transformation matrix as user data on a shape, and get that user data with getattribute().



// Stephen Blair
// Arnold Renderer Support

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