覆盖动画帧以达到目标

Question

我正在开发网球比赛，现在我试图在击球时同步球员的挥杆动作。目前我只有一个动画，但是对于我目前想要实现的动画来说已经足够了。

基本上，我想在运行时更改默认动画，以便在撞击时减小球拍和球之间的间隙。现在，我正在设置一个阈值，如果球在一定距离内，则视为击中。该阈值太大，无法使其看起来逼真。

我尝试IK效果不佳。我不知道在这一点上IK是否真的可行，因为如果可能的话，它似乎需要更多的计算和复杂性。我想知道是否有更简单的方法可以尝试。

    //a callback for calculating IK
void OnAnimatorIK() {
    if (animator) {

        //if the IK is active, set the position and rotation directly to the goal. 
        if (ikActive) {

            // Set the right hand target position and rotation, if one has been assigned
            if (ball != null) {

                Vector3 currentPosition = animator.GetIKPosition(AvatarIKGoal.RightHand);

                //The avatar the IK is running on
                GameObject avatar = this.gameObject;

                //Distance from avatar to ball
                float distanceToBall = Vector3.Distance(racket.transform.position, ball.position);

                //Weight will be close to 1 as ball gets closer to the avatar
                float weight = 1 - Mathf.Max(Mathf.Min(distanceToBall / 50, 1), 0);

                //Set IK target weight
                animator.SetIKPositionWeight(AvatarIKGoal.RightHand, weight);

                //Set IK target
                animator.SetIKPosition(AvatarIKGoal.RightHand, new Vector3(currentPosition.x + 10, currentPosition.y, currentPosition.z));
            }

        }

        //if the IK is not active, set the position and rotation of the hand and head back to the original position
        else {
            animator.SetIKPositionWeight(AvatarIKGoal.RightHand, 0);
        }
    }
}