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Thread: Reverse Foot Rig + Same As Item Problem

  1. #1
    Not to scale BlueApple's Avatar
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    Reverse Foot Rig + Same As Item Problem

    I've got a reverse foot rig in the attached .zip and it works fine for what I need. Grab the Foot1Lft or Foot1Rt bones and you can move and rotate them and everything is cool.

    I am trying to add nulls (HeelRt and HeelLft) to control the bones. I have a different rig where I simply set the Heel nulls as rotation and position items (Motion Options > Controllers and Limits) and choose Same As Item for XYZ and HPB.

    The problem is when I set Y or Z to Same As Item the bone (Foot1Lft/Rt) flies into the character's head. Anyone know which step I am missing here?

    Also, I tried setting this up with expressions instead of through motion options and got the same result. As soon as the position expressions for the Y or Z were applied the bone went flying.

    Any help is appreciated.

    -Adam
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    Adam Martin
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  2. #2
    You try it with Relativity stuff?

  3. #3
    Not to scale BlueApple's Avatar
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    Haven't tried Relativity, but I'll take a look at it.

    I'd like to know why the other method isn't working too, though. I had it working fine on a different rig, but something got hosed on this one.
    Adam Martin
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    Mac Pro 2x3Ghz Dual-Core Intel | 8 Gb RAM | OS 10.6.8 | ATI Radeon X1900 XT

  4. #4
    Goes bump in the night RebelHill's Avatar
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    world?
    LSR Surface and Rendering Tuts.
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  5. #5
    Not to scale BlueApple's Avatar
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    Quote Originally Posted by RebelHill View Post
    world?
    Is this a global vs. local thing you're suggesting? Where can I find that so I can change it, por favor?
    Adam Martin
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    Mac Pro 2x3Ghz Dual-Core Intel | 8 Gb RAM | OS 10.6.8 | ATI Radeon X1900 XT

  6. #6
    Not to scale BlueApple's Avatar
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    Modify -> Coordinate System -> World/Parent/Local all deliver the same result. For some reason the foot bone goes flying when I try to control the Y or Z position with a null.

    If anyone has the time to crack open the .zip I attached (first post) and let me know how I screwed up, I'd love to hear from you.
    Adam Martin
    my portfolio
    Mac Pro 2x3Ghz Dual-Core Intel | 8 Gb RAM | OS 10.6.8 | ATI Radeon X1900 XT

  7. #7
    Goes bump in the night RebelHill's Avatar
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    I meant the world checkbox thats right there in the same as item/motion options.
    LSR Surface and Rendering Tuts.
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    RHA Animation Tutorials
    RHR Rigging Tutorials
    RHN Nodal Tutorials
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  8. #8
    Not to scale BlueApple's Avatar
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    Quote Originally Posted by RebelHill View Post
    I meant the world checkbox thats right there in the same as item/motion options.
    That was it. Thanks for the assistance.
    Adam Martin
    my portfolio
    Mac Pro 2x3Ghz Dual-Core Intel | 8 Gb RAM | OS 10.6.8 | ATI Radeon X1900 XT

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