unity ik

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最新推荐文章于 2024-02-27 23:44:50 发布

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分类专栏： unity

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本文介绍了一个Unity中的IK（逆向运动学）行为脚本实现，该脚本通过控制角色的手部和脚部位置来实现精确的动画效果。脚本利用Unity的Animator组件，并通过SetIKPosition和SetIKRotation方法来设定IK目标的位置和旋转。

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ik 要注意将世界坐标转化为自身坐标

using UnityEngine;
using System.Collections;
using System;

[RequireComponent(typeof(Animator))]

public class IKBehaviour : MonoBehaviour {
	protected Animator animator;
	public bool ikActive ;
	public Transform rightHandObj ;
	public Transform lefthandobj ;
	public Transform leftfootobj;
	public Transform rightfootobj;
	
	// Use this for initialization
	void Start () {
		animator = GetComponent<Animator>();
		ikActive = true;
	}
	void OnAnimatorIK()
	{
		if(animator)
		{
			if(ikActive)
			{
				animator.SetIKPositionWeight(AvatarIKGoal.RightHand,1f);
				animator.SetIKRotationWeight(AvatarIKGoal.RightHand,0f);
				animator.SetIKPositionWeight(AvatarIKGoal.LeftHand,1f);
				animator.SetIKRotationWeight(AvatarIKGoal.LeftHand,0f);
				animator.SetIKPositionWeight(AvatarIKGoal.RightFoot,1f);
				animator.SetIKRotationWeight(AvatarIKGoal.RightFoot,0f);
				animator.SetIKPositionWeight(AvatarIKGoal.LeftFoot,1f);
				animator.SetIKRotationWeight(AvatarIKGoal.LeftFoot,0f);
				if(rightHandObj != null)
				{
					
					animator.SetIKPosition(AvatarIKGoal.RightHand,transform.InverseTransformPoint(rightHandObj.position));
					animator.SetIKRotation(AvatarIKGoal.RightHand,rightHandObj.rotation);
					
				}
				if(lefthandobj!=null)
				{
					
					animator.SetIKPosition(AvatarIKGoal.LeftHand,transform.InverseTransformPoint(lefthandobj.position));
					animator.SetIKRotation(AvatarIKGoal.LeftHand,lefthandobj.rotation);
				}
				if(rightfootobj != null)
				{
					animator.SetIKPosition(AvatarIKGoal.RightFoot,transform.InverseTransformPoint( rightfootobj.position));
					animator.SetIKRotation(AvatarIKGoal.RightFoot,rightfootobj.rotation);
					
				}
				if(leftfootobj!=null)
				{
					
					animator.SetIKPosition(AvatarIKGoal.LeftFoot,transform.InverseTransformPoint(leftfootobj.position));
					animator.SetIKRotation(AvatarIKGoal.LeftFoot,leftfootobj.rotation);
				}
			}
			else
			{
				animator.SetIKPositionWeight(AvatarIKGoal.RightHand,0);
				animator.SetIKRotationWeight(AvatarIKGoal.RightHand,0);
				animator.SetIKPositionWeight(AvatarIKGoal.LeftHand,0);
				animator.SetIKRotationWeight(AvatarIKGoal.LeftHand,0);
				animator.SetIKPositionWeight(AvatarIKGoal.RightFoot,0);
				animator.SetIKRotationWeight(AvatarIKGoal.RightFoot,0);
				animator.SetIKPositionWeight(AvatarIKGoal.LeftFoot,0);
				animator.SetIKRotationWeight(AvatarIKGoal.LeftFoot,0);
			}
		}
	}
}