What XSI|ICE "Project a vector" equivalent on VOPS?

[rod.vfx.td 10]

What XSI | ICE "Project a vector" equivalent on POP/VOPS?

reference: http://download.autodesk.com/global/docs/softimage2014/en_us/userguide/files/iceref_Project_Vector.htm

the node on XSI returns 3 things:

RESULT

LENGTH

VALID

 

any ideas?

thanks in advance!

Edited July 6, 2018 by rod.vfx.td

[toadstorm 237]

In VOPs it would be a combination of the Intersect VOP to fire the ray, then the Distance VOP to compute the distance between the origin point of the ray and the Intersect VOP's output "pos". Intersect will return -1 as the "prim" output if an actual primitive isn't hit, so you could use that as your "VALID" output.

[MENOZ 34]

Intersect VOP gives the coords on a surface, reading the help it seems to me more like dot(a,b)/length(b)  

https://en.wikipedia.org/wiki/Dot_product

wiki calls it "Scalar projection" 

Never used softimage tho.

[rod.vfx.td 10]

Thanks

 

Edited July 10, 2018 by rod.vfx.td
corrections