贴代码：
摄像机的拉近视角代码：
public Transform target;
public float minFov = 15f;
public float maxFov = 70f;
public float sensitivity = 10f;
void Start()
{
transform.LookAt(target);
}
void Update()
{
if (Input.GetKey(KeyCode.LeftControl) || Input.GetKey(KeyCode.RightControl))
{
float fov = Camera.main.fieldOfView;
fov -= Input.GetAxis("Mouse ScrollWheel") * sensitivity;
fov = Mathf.Clamp(fov, minFov, maxFov);
Camera.main.fieldOfView = fov;
}
}
主要是通过控制摄像机的fieldOfView属性，可以自己在场景视图中调节看一下。
通过判断选中物体是否是目标物体，如果是就旋转
代码：
public Transform target;//目标物体
public float HorizontalSpeed = 10f;
public float VerticalSpeed = 10f;
string RotateDirection = null;//判断当前旋转方向，用于固定当前旋转方向，不让用户在横向旋转时纵向旋转，反之同理。
bool isTarget = false;//判断当前射线碰撞到的物体是否为目标物体
int RotateState = 0;//当前旋转状态0不旋转，1匀速旋转
//GameObject PanelToolTips;
void Start () {
if(!target)
{
target=gameObject.transform;//如果target不存在，就设置脚本附加的物体为target
}
}
void Update () {
if (Input.GetMouseButton(0))
{
if (isTarget)//判断当前是否选中目标物体
{
RotateState = 1;
RotateTarget(target);
}
}
if (Input.GetMouseButtonUp(0))
{
RotateDirection = null;
isTarget = false;//当鼠标抬起时，设置当前物体不是目标物体
RotateState = 0;
}
if (Input.GetMouseButtonDown(0))//每次按下鼠标左键都用射线检测碰撞的物体是什么
{
Ray();
}
}
/// <summary>
/// 旋转匀速物体方法//
/// </summary>
/// /// <param name="transformObj">要旋转的目标物体</param>
void RotateTarget(Transform transformObj)
{
float h = Input.GetAxis("Mouse X");//右正左负
float v = Input.GetAxis("Mouse Y");//上正下负
if ((Mathf.Abs(h) > Mathf.Abs(v)) && (RotateDirection != "down" && RotateDirection != "up"))//此处设置当物体横向旋转时不能纵向旋转，纵向旋转时不能横向旋转，如果不需要，可把&&后面删除，RotateDirection变量也可删除
{
if (h < 0)
{
transformObj.Rotate(Vector3.up, HorizontalSpeed);
RotateDirection = "left";
}
else if (h > 0)
{
transformObj.Rotate(-Vector3.up, HorizontalSpeed);
RotateDirection = "right";//当前旋转方向为右向
}
RotateState = 1;//匀速旋转
}
else if ((Mathf.Abs(h) < Mathf.Abs(v)) && (RotateDirection != "left" && RotateDirection != "right"))//同上
{
if (v < 0)
{
transformObj.RotateAround(target.transform.position, Vector3.left, VerticalSpeed);
RotateDirection = "down";//当前旋转方向为下向
}
else if (v > 0)
{
transformObj.RotateAround(target.transform.position, Vector3.right, VerticalSpeed);
RotateDirection = "up";//当前旋转方向为上向
}
RotateState = 1;
}
//print(RotateDirection);
}
/// <summary>
/// 从主相机发送射线，判断当前点击的物体是否是要旋转的物体
/// </summary>
void Ray()
{
Ray ray=Camera.main.ScreenPointToRay(Input.mousePosition);
RaycastHit hit;
GameObject hitObj=null;
if (Physics.Raycast(ray, out hit, 100f))
{
hitObj = hit.collider.gameObject;
print(hitObj.name);
if ((hitObj.transform.name=target.name )//如果当前碰撞的物体是目标物体
{
target = hitObj.transform;
isTarget = true;
}
}
}