unity3d拖拽鼠标旋转模型

测试.png

using UnityEngine;
/// <summary>
/// 脚本挂载到模型即可，模型添加 collider，isTrigger为true
/// </summary>
public class ModelRotation : MonoBehaviour
{
    public float mRotationSpeed = 800f;
    /// <summary>
    /// 如果初始模型Y轴有旋转，需要把模型旋转值赋值到这里
    /// </summary>
    private float mYRaation = 180;
    void Update()
    {
        if (Input.GetMouseButton(0))
        {
            // 射线检测
            Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
            RaycastHit hitInfo;
            if (Physics.Raycast(ray, out hitInfo))
            {
                if (hitInfo.collider.isTrigger)
                {
                    //获取鼠标输入  
                    mYRaation += Input.GetAxis("Mouse X") * mRotationSpeed;
                    //计算旋转  
                    Quaternion mRotation = Quaternion.Euler(transform.rotation.x, -mYRaation, 0);
                    // 插值旋转
                    transform.rotation = Quaternion.Lerp(transform.rotation, mRotation, Time.deltaTime * mRotationSpeed);
                }
            }
        }
    }


}

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