What are the practical uses of Volume Arrival Time SOP?

[magneto]

Hi,

I am trying to experiment with it by using it on a simple scenario, but I am not sure what it's used for and there are no examples in the help.

Is that supposed to be used for example when you have particles travelling around obstacles towards a target using the shortest, most efficient path for each particle?

Any practical ideas would be appreciated.

Thanks

[anim]

it's used in the Cloud Light SOP to precompute arrival times from light points, in other words how long it takes to get from light point to certain voxel based on speed field

that information is then used to compute light intensity/color basically just remap arrival time volumes to light color so it's quite fast to tweak light color, intensity, falloff since arrival times are already computed

[magneto]

Thanks anim, I will check out the cloud light sop to see how it's used. Can it be used for other stuff like particle targeting, etc?