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How do you animate dforce hair?

DefaultNameDefaultName Posts: 391
in Technical Help (nuts n bolts)

Hello. I'm wondering what you do to simulate/animate dforce hair, and if there's a way to make it quicker.

I tried once, to simulate across frames, but simulating certain hairs takes a very long time for just one frame, but I make animations that go to 60-100 frames. Is there a better way to do this? Or settings to adjust? Thank you.

Comments

  • GordigGordig Posts: 10,049
    edited June 2020

    I don't know how much experimenting you've done, but animating a simulation doesn't necessarily take longer than simulating a single frame because that single frame is essentially doing the entire simulation at once. With an animated simulation, the sim is spread out across all the frames, so a 100-frame animation will probably take longer than a single-frame sim, but it won't be the length of a single-frame sim times 100.

    Post edited by Gordig on
  • TheMysteryIsThePointTheMysteryIsThePoint Posts: 2,946
    Gordig said:

    I don't know how much experimenting you've done, but animating a simulation doesn't necessarily take longer than simulating a single frame because that single frame is essentially doing the entire simulation at once. With an animated simulation, the sim is spread out across all the frames, so a 100-frame animation will probably take longer than a single-frame sim, but it won't be the length of a single-frame sim times 100.

    @Gordig Hi, can you explain further? I can't reconcile "the sim is spread out across all the frames" with what I know about discrete simulations. I would love to be doing something unnecessary, and to be able to simulate hair much fater, but I just don't grok what you wrote; My sim time has always scaled more or less linearly with length.

  • GordigGordig Posts: 10,049
    TheMysteryIsThePoint said:
    Gordig said:

    I don't know how much experimenting you've done, but animating a simulation doesn't necessarily take longer than simulating a single frame because that single frame is essentially doing the entire simulation at once. With an animated simulation, the sim is spread out across all the frames, so a 100-frame animation will probably take longer than a single-frame sim, but it won't be the length of a single-frame sim times 100.

    @Gordig Hi, can you explain further? I can't reconcile "the sim is spread out across all the frames" with what I know about discrete simulations. I would love to be doing something unnecessary, and to be able to simulate hair much fater, but I just don't grok what you wrote; My sim time has always scaled more or less linearly with length.

    What I meant was that the single frame simulation mode is effectively a 30-frame animation by itself (longer if you increase the stabilization time). 

  • TheMysteryIsThePointTheMysteryIsThePoint Posts: 2,946
    Gordig said:
    TheMysteryIsThePoint said:
    Gordig said:

    I don't know how much experimenting you've done, but animating a simulation doesn't necessarily take longer than simulating a single frame because that single frame is essentially doing the entire simulation at once. With an animated simulation, the sim is spread out across all the frames, so a 100-frame animation will probably take longer than a single-frame sim, but it won't be the length of a single-frame sim times 100.

    @Gordig Hi, can you explain further? I can't reconcile "the sim is spread out across all the frames" with what I know about discrete simulations. I would love to be doing something unnecessary, and to be able to simulate hair much fater, but I just don't grok what you wrote; My sim time has always scaled more or less linearly with length.

    What I meant was that the single frame simulation mode is effectively a 30-frame animation by itself (longer if you increase the stabilization time). 

    Thank you, now I understand what you meant.

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