How can I make sprites grow over their life time? I've tried all sorts of expressions in the scale fields of my sprite POP but it just doesn't seem to work. I'm obviously going wrong somewhere but I can't find the solution anywhere. I want the sprites to go from 0.1 to 10 over their life time. Any ideas?

what about fit01($LIFE, 0.1, 10) ?

also you can gain more control with VOPs and ramp parameter

That's one of the expressions I tried. I've just tried it in another scene and it works fine so it must be something to do with the scene.

– I think I've figured it out. I had it only operating on one group. D'oh :roll:

tamte
what about fit01($LIFE, 0.1, 10) ?

also you can gain more control with VOPs and ramp parameter

could you show it? (vops)
thanks

You can use that expression directly in a Point SOP after the POP SOP in the scale parameter directly.

You can also use that expression in a Property POP's scale parameter as well.

See the attached example file for a VOPs solution as well. Easiest to build in the control you want.


Note: I use $AGE in place of $LIFE almost all the time. This way if I increase the life of the particles, I don't get a change in behaviour, unless I really want to.

Thanks again Jeff.
I am touched by your kindness.
your examples are higly accurate.

I always like to use ramp from the edit parameter interface for such things.