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Add refract node #1698

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Feb 7, 2024
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Add refract node #1698

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09efabe
add refract node
ld-kerley Feb 5, 2024
72f25fb
fix typo 'reflected' -> 'refracted'
ld-kerley Feb 6, 2024
a696e0a
Minor updates to documentation
jstone-lucasfilm Feb 7, 2024
545985f
Minor updates to documentation
jstone-lucasfilm Feb 7, 2024
93d6805
rename 'eta' to 'ior' to align better with the rest of the node defin…
ld-kerley Feb 7, 2024
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Minor updates to documentation 
Signed-off-by: Jonathan Stone <jstone@lucasfilm.com>
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@jstone-lucasfilm
jstone-lucasfilm authored Feb 7, 2024
commit a696e0ac9bba7285504a6627ab4487d0ebbe1d81
11 changes: 5 additions & 6 deletions libraries/stdlib/stdlib_defs.mtlx
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Expand Up @@ -2763,13 +2763,12 @@

<!--
Node: <refract>
Compute the refraction direction of an input vector against a normal vector.
The normal vector is assumed to be normalized.
Compute the refraction vector given an incident vector, unit surface normal, and index of refraction.
-->
<nodedef name="ND_refract_vector3" node="refract" nodegroup="math" doc="Compute the refraction direction of an input vector.">
<input name="in" type="vector3" value="1.0,0.0,0.0" doc="Input vector to be refracted." />
<input name="normal" type="vector3" defaultgeomprop="Nworld" doc="Normal vector." />
<input name="eta" type="float" value="1.0" doc="Ratio of the indices of refraction."/>
<nodedef name="ND_refract_vector3" node="refract" nodegroup="math" doc="Compute the refraction vector">
<input name="in" type="vector3" value="1.0, 0.0, 0.0" doc="Incident vector" />
<input name="normal" type="vector3" defaultgeomprop="Nworld" doc="Surface normal" />
<input name="eta" type="float" value="1.0" doc="Index of refraction" />
<output name="out" type="vector3" />
</nodedef>

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