效果（左侧模型动画，右侧模型IK控制）
模型动画下载及导入
推荐模型动画下载链接地址
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Unity导入教程参见以下链接地址(需要科学上网)
/learn-and-support/my-software/unity/getting-started
导入完成后模型相关查看
配置模型动画控制器
拖拽模型预设到视图中配置动画控制器(可自定义动画控制器)创建新的控制器状态，向Motion属性中添加模型中的动画
通过修改Status属性来改变播放的动画
监听动画状态的脚本
using UnityEngine;public class DanceAnimStateMachine : StateMachineBehaviour{// 进入当前状态时override public void OnStateEnter(Animator animator, AnimatorStateInfo stateInfo, int layerIndex){Debug.Log($"进入当前状态时");}// 当前状态更新时，每帧都会被调用override public void OnStateUpdate(Animator animator, AnimatorStateInfo stateInfo, int layerIndex){Debug.Log($"当前状态更新时，每帧都会被调用");}// 离开当前状态时override public void OnStateExit(Animator animator, AnimatorStateInfo stateInfo, int layerIndex){Debug.Log($"离开当前状态时");}// 在Animator.OnAnimatorMove()之后调用，这里可以处理动画根节点的位移override public void OnStateMove(Animator animator, AnimatorStateInfo stateInfo, int layerIndex){Debug.Log($"在Animator.OnAnimatorMove()之后调用，这里可以处理动画根节点的位移");}// 在Animator.OnAnimatorIK()之后调用，这里可以处理IK(反向运动学)动画override public void OnStateIK(Animator animator, AnimatorStateInfo stateInfo, int layerIndex){Debug.Log($"在Animator.OnAnimatorIK()之后调用，这里可以处理IK(反向运动学)动画");}}
脚本控制模型骨骼IK动画
创建自己的动画控制器
添加 T-Pose 动画到控制器
启用 IK Pass
模型骨骼IK控制脚本
using UnityEngine;namespace Example_01.Scripts{public class ModelAnimByIK : MonoBehaviour{private Animator _animator;public Transform leftHandObj;public Transform leftFootObj;public Transform rightHandObj;public Transform rightFootObj;private void Awake(){_animator = GetComponent<Animator>();}private void OnAnimatorIK(int layerIndex){if (!_animator) return;// 设置动画权重_animator.SetIKPositionWeight(AvatarIKGoal.LeftHand, 1f);_animator.SetIKRotationWeight(AvatarIKGoal.LeftHand, 1f);_animator.SetIKPositionWeight(AvatarIKGoal.LeftFoot, 1f);_animator.SetIKRotationWeight(AvatarIKGoal.LeftFoot, 1f);_animator.SetIKPositionWeight(AvatarIKGoal.RightHand, 1f);_animator.SetIKRotationWeight(AvatarIKGoal.RightHand, 1f);_animator.SetIKPositionWeight(AvatarIKGoal.RightFoot, 1f);_animator.SetIKRotationWeight(AvatarIKGoal.RightFoot, 1f);if (leftHandObj != null){// 设置左手根据目标点而旋转移动父骨骼节点_animator.SetIKPosition(AvatarIKGoal.LeftHand, leftHandObj.position);_animator.SetIKRotation(AvatarIKGoal.LeftHand, leftHandObj.rotation);}if (leftFootObj != null){// 设置左脚根据目标点而旋转移动父骨骼节点_animator.SetIKPosition(AvatarIKGoal.LeftFoot, leftFootObj.position);_animator.SetIKRotation(AvatarIKGoal.LeftFoot, leftFootObj.rotation);}if (rightHandObj != null){// 设置右手根据目标点而旋转移动父骨骼节点_animator.SetIKPosition(AvatarIKGoal.RightHand, rightHandObj.position);_animator.SetIKRotation(AvatarIKGoal.RightHand, rightHandObj.rotation);}if (rightFootObj != null){// 设置右脚根据目标点而旋转移动父骨骼节点_animator.SetIKPosition(AvatarIKGoal.RightFoot, rightFootObj.position);_animator.SetIKRotation(AvatarIKGoal.RightFoot, rightFootObj.rotation);}}}}
