var joint_index:int =
this.skeleton.jointIndexFromName("rthumb2");//获取骨骼上的一个节点索引
var
joint_pose:JointPose = (mesh.animator as
SkeletonAnimator).globalPose.jointPoses[joint_index];
//通过索引查找节点的坐标位置
weapon.transform = joint_pose.toMatrix3D()//转化成3d矩阵
原文：http://www.cnblogs.com/Jaylin/p/3767270.html