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Thread: Trees with animated leaves-slight breeze?

  1. #1
    Re Member the bender Schwing's Avatar
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    Trees with animated leaves-slight breeze? Update

    We all know that the leaves in our 3d trees are just a bunch of random flat polys. Does anyone know of a way to animate the surface properties of that mass to resemble the look of a slight breeze? Maybe something with the envelopes of the specularity channel? Even with moving cars and people, my animated landscapes would look much more realistic with some tree motion.

    Tom
    Last edited by Schwing; 10-11-2005 at 03:51 PM.
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  2. #2
    This could be the solutiuoin you're looking for.

    One thing to try is to use a very slight displacement map on the tree branches and leaves. Set up a very small position movement in x,y,and z, with modifier like Oscillator or Noisy Channel to animate the effect. Also, I'm sure you wouldn't want the trunk to move around any so you also need to use a gradient falloff on the tree to keep it from being affected.

    This may not be the "perfect" solution to what you want, but it can be very effective.

  3. #3
    Re Member the bender Schwing's Avatar
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    See me tree

    A quickshade render. Whatcha think?
    tree thing
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  4. #4
    Was this from following my suggestion?

    Speed and size/amount of displacement seems high and too fast.

  5. #5
    Re Member the bender Schwing's Avatar
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    Quote Originally Posted by JamesCurtis
    Was this from following my suggestion?

    Speed and size/amount of displacement seems high and too fast.
    Displacement map for the leaves layer. Two sets of moving turbulance PT with a crust PT as an alpha so some leaves won't be affected or as much. One set is faster than the other and is alpha blocked so it doesn't act upon the slower set. Still doesn't look right to me. Either they're too fast or they're too slow.
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  6. #6
    I think you're on the right track, but consider applying just one procedural at a time, the slow one or the fast one, and get it looking right before adding the other.

    A good technique for the branches is to create a weightmap for the tree with the value falling off at the braches, then apply the same displacement as the leaves, and put a 'weight map' gradient set to alpha on a layer above.
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  7. #7
    If you're a member of CG talk, try downloading my scene files.

    http://forums.cgsociety.org/showthre...ighlight=trees

    It uses cloth FX on a cage, with a tree metalinked to it.

    EDIT---IN fact.. I've attached it..

    You will need to calculate twice.. don't ask me why.
    Attached Files Attached Files
    Last edited by pooby; 10-12-2005 at 06:03 AM.

  8. #8
    Re Member the bender Schwing's Avatar
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    Interesting.
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