I have a hair particle system making a forest and I need those trees to grow, like in timelapse. I don't need them to grow from seedlings, it's more like appearing one after another in about 50 frames. I tried to animate the count, which is not possible and to animate the size, which is sort of possible, but for some reason only one keyframe can be added.
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1$\begingroup$ Try animating the scale of the trees themselves $\endgroup$ – someonewithpc Oct 20 '15 at 18:50
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Unfortunately, the scale of particles cannot be animated, but there is a simple work around: animate the scale of the objects that are being distributed by the particle system.
answered Oct 20 '15 at 20:25
