Hello! In order to achieve that sort of effect with triplanar you'll have to create a custom solution based on our TriplanarProjection sample, as the
Triplanar node facilitates the use of this technique but, as stated on the wiki page, its merely a convenience node for a general purpose triplanar effect, so it does not support panning.
You could also try to use a secondary UV channel or drive the effect in object or world space, as you can see in the Extrusion example, or consider using a Flowmap -
Flowmap example, or even use our AnimatedUVDistortion and RadialUVDistortion as a base for caustics, but it will always depend on how you want to implement it.
