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Modeling 3D Color Volume

Can anyone help me figure out how to plug the color volume equation to create these 3D shapes?

I am attempting to plug in the RGB conversion equation I found on wikipedia in an attribute wrangle to move and plot the RGB points in 3D space, but i'm not having any luck. 

I'd like to get something that looks kind of like the attached image. 

I was also thinking an ISO surface might work too, but I'm not familiar enough to know how to convert that wikipedia equation.

my starting hip file is also attached. 





Edited by breadbox

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