I understand “coef_1 * val_1 OP coef_2 * val_2 OP coef_3 * val_3 OP constant” but for coefficient (for example coef_1 ..2 and so on)

There are drop down menus for Timestep , e^Timestep.

I see “set always” down there which will evaluate every frame with current value but what about the Timestep and e^Timestep? what does that do exactly?

I have the same question. Who could explain it? Thanks!

jerry7
I have the same question. Who could explain it? Thanks!

It means that your coefficient will be multiplied by the time step (in this case 1.0 / $FPS) for the Timestep option, for the second one it will be your coefficient ^ Timestep. For example the second option (power) its very useful when you need to “decay” things, like for example a density field or temperature, it looks more natural because is not a linear decay, but you can even combine it with a linear one with less influence for more interesting results.

Hope that helps!

Alejandro