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  • Simple character arm rigging

    Posted by Zoltán Riskó on February 12, 2018 at 10:30 pm

    Hy I’m working on a simple character arm rigging but I’m in stuck for a while so I would like to ask your help. First of all sorry for my English but I hope you will understand what I’m talking about. ☺

    My character’s upper arm and forearm has the the same length so I can use simply pythagoras theorem with Tangent theorem.
    I have a composition “Left_Arm_Comp”. I just use it to change the arm rotations only. Up and Down.
    I have an another Composition “009_Left_Arm” which includes the “Left_Arm_Comp”. Here I can rotate the whole Arm by an Arm_Controller. Almost all layer is parented to “Angle Line” which specify the arms rotation.

    Also I have a Null object “ELbow”. And here is my problem. I would like to change the side of the bend with this Null Object. When I move the elbow to left or right I would like to change the bend to the opposite side. Now the arm’s rotation is following the elbow’s position, but only working in the right side. If I change the side and move the elbow to left it’s going wrong because:

    a=transform.position[0]+b; (009_Left_Arm/Elbow.position)

    When Elbow.transform.position[0] < 0 I need to change it to a=transform.position[0]-b but I don’t know how. But maybe the whole rigging idea is wrong and I need to change the structure?

    Here you can download the project file, if you have a few free time, please take a look.
    Arm Rigging AECS6 – Google Drive
    I tried a lot ideas to solve it but without luck. You are my last chance guys ☺

    Thank you very much!

    Zoltán Riskó replied 8 years, 3 months ago 1 Member · 1 Reply
  • 1 Reply
  • Zoltán Riskó

    February 13, 2018 at 5:37 am

    I know Duik I used it a lot but with Duik if you want to change the bend side you need to use a checkbox which will mirror the bend. When animating this is not a nice solution. I would like to create a more animator friendly tool with this elbow null object.

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