I am a newbee at particles and I don’t know if I am doing something wrong, trying to vary movement of particles:
- I put a plane, make it an emitter for particles
- I open IPO window, choose Particles mode and try to var X-gravity, Y-gravity etc.
- I bake particles and they seem to have some initial values for X-gravity, but it doesn’t change…
I upload blend source with sample partice+ipo attemp…
What am I doing wrong?
PS. Sorry for my english
test-part-ipo.blend (381 KB)
Nothing, all is good and well, though you obviously suggest a different outcome.
Rule No. 1: A particle ipo of 100 frames is evaluated in the lifetime of the particle (by default).
So lets take a look at the ipo curve for GravX. It has a positive force till frame 78. So the particles are accelerated to frame 50*0,78 = 39. Then they are accelerated in the opposite direction and get slower at the end.
Rule No. 2: You can’t set the particle speed directly.
Accelerating an object is something different than settings its speed. You can only set the starting speed.
Read also this page about time and particles.