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FBBIKのセットアップがまずかったのを修正 #867

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merged 1 commit into from Dec 9, 2022

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malaybaku
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@malaybaku malaybaku commented Dec 9, 2022

PR category

PR type:

  • Bug fix

What the PR does

fixed #859

#856 で肘ねじれの対策として入れてたfixが一部FBBIKのセットアップに従っていなかったのをstraight forwardに直してます。

http://www.root-motion.com/finalikdox/html/page8.html

引用: Adding FullBodyBipedIK in runtimeの部分

// To know how to fill in the custom limb orientations definition, you should imagine your character standing in I-pose (not T-pose) with legs together and hands on the sides...
...
// Last Bone Left Axis is the local axis of the foot/hand that is facing towards character left.

つまり、Last Bone Left Axisで言われてる軸はVRMの正規化ボーンに対して次のような対応関係になります。

  • 左手: 手の甲が向いてる方向に相当する、手ボーンのローカル軸 = VRMの正規化ボーンではup
  • 右手: 手のひらが向いてる方向に相当する、手ボーンのローカル軸 = VRMの正規化ボーンではdown

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