//上下 x(-45,15)
//左右 y(-60,60)
private float maxYRotation = 120;
private float minYRotation = 0;
private float maxXRotation = 60;
private float minXRotation = 0;
void Update()
{
//计算出鼠标在屏幕上的位置
float xPosPrecent = Input.mousePosition.x / Screen.width;
float yPosPrecent = Input.mousePosition.y / Screen.height;
//Mathf.Clamp 限制value的值在min和max之间 如果value小于min,返回min。如果value大于max,返回max,否则返回value
float xAngele = -Mathf.Clamp(yPosPrecent * maxXRotation, minXRotation, maxXRotation) + 15;
float yAngele = Mathf.Clamp(xPosPrecent * maxYRotation, minYRotation, maxYRotation) - 60;
transform.eulerAngles = new Vector3(xAngele, yAngele, 0);
}
}