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Thread: Bullet question: rollers?

  1. #1
    Axes grinder- Dongle #99
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    Question Bullet question: rollers?

    #aflw

    Has anybody experimented with ROLLERS in Bullet?

    I'd like to construct a mockup of something that works a bit like a rock polisher, with a canister rotated on a horizontal axis, and while this would be stupid easy with keyframes or expressions, I thought it might be fun to try with Bullet.

    Ideally, I'd be driving the 2 rollers with a Bullet 'chain' loop, while the rollers drove the canister. --Realistically, I'll be happy if the canister accurately rotates.

    Purely a hobby project, for my other hobby.
    They only call it 'class warfare' when we fight back.
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  2. #2

    can't recall at the moment, but you might find some info here,

    Robotic Movements
    http://forums.newtek.com/archive/index.php/t-97659

    maybe look at the tank tread links? or gear links?

    not Bullet though, but might help in some way...
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  3. #3
    Super Member XswampyX's Avatar
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    I had a quick go.... and it works really well.


    Bullet_Tumble.zip

  4. #4
    Axes grinder- Dongle #99
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    Talking

    You da man, Swampster! Thanks!

    Very nifty proof of concept.
    Last edited by jeric_synergy; 08-23-2016 at 07:14 PM.
    They only call it 'class warfare' when we fight back.
    Praise to Buddha! #resist
    Chard's Credo-"Documentation is PART of the Interface"
    Film the cops. Always FILM THE COPS. Use this app.

  5. #5
    Super Member XswampyX's Avatar
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    No probs. You just have to add the chain & motor.

    It's quite mesmerising to watch it, like looking at the washing machine.

  6. #6

    XswampyX does it Again! 
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  7. #7
    Quote Originally Posted by XswampyX View Post
    No probs. You just have to add the chain & motor.

    It's quite mesmerising to watch it, like looking at the washing machine.
    Post an animation of it if you have time. I tried to load your scene but it complained about missing dynamic constraints in LW 11.6 and crashed. I tried loading it in 2015 demo and no objects loaded.
    Last edited by js33; 08-24-2016 at 02:48 AM.

  8. #8
    RETROGRADER prometheus's Avatar
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    Quote Originally Posted by XswampyX View Post
    No probs. You just have to add the chain & motor.

    It's quite mesmerising to watch it, like looking at the washing machine.
    Ah...so that is what you have been doing
    Welcome back after some time of absence.

  9. #9
    Super Member XswampyX's Avatar
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    Quote Originally Posted by prometheus View Post
    Ah...so that is what you have been doing
    Welcome back after some time of absence.
    Haha! Very good!

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