用鼠标滚轮实现场景放大缩小

孙佳 · 发表于 2013-6-13 09:04

public enum RotationAxes { MouseXAndY = 0, MouseX = 1, MouseY = 2 }
public RotationAxes axes = RotationAxes.MouseXAndY;
public float sensitivityX = 15F;
public float sensitivityY = 15F;
public float minimumX = -360F;
public float maximumX = 360F;
public float minimumY = -85F;
public float maximumY = 4F;
public float rotationY = 0F;
public GameObject target;
public float theDistance = -10f;
public float MaxDistance = -10f;
public float ScrollKeySpeed = 100.0f;

void Update ()
{
target = GameObject.Find("new_offer");
// 滚轮设置相机与人物的距离.
if(Input.GetAxis("Mouse ScrollWheel") != 0)
{
      theDistance = theDistance + Input.GetAxis("Mouse ScrollWheel") * Time.deltaTime * ScrollKeySpeed;
}
// 鼠标中间滚动得到的值是不确定的,不会正好就是0,或 -10,当大于0时就设距离为0,小于MaxDistance就设置为MaxDistance
if(theDistance>0)
{
  theDistance = 0;
}
if(theDistance < MaxDistance)
{
  theDistance = MaxDistance;
}
if(Input.GetMouseButton(1))
{
      transform.position = target.transform.position;
      if (axes == RotationAxes.MouseXAndY)
      {
         float rotationX = transform.localEulerAngles.y + Input.GetAxis("Mouse X") * sensitivityX;
         rotationY += Input.GetAxis("Mouse Y") * sensitivityY;
         rotationY = Mathf.Clamp (rotationY, minimumY, maximumY);
         transform.localEulerAngles = new Vector3(-rotationY, rotationX, 0);
      }
      else if (axes == RotationAxes.MouseX)
      {
         transform.Rotate(0, Input.GetAxis("Mouse X") * sensitivityX, 0);
      }
      else
      {
         rotationY += Input.GetAxis("Mouse Y") * sensitivityY;
         rotationY = Mathf.Clamp (rotationY, minimumY, maximumY);
         transform.localEulerAngles = new Vector3(-rotationY, transform.localEulerAngles.y, 0);
      }
      SetDistance();
}
else
{
      transform.position = target.transform.position;
      SetDistance();
}
}
void Start ()
{
if (rigidbody)
{
      rigidbody.freezeRotation = true;
      transform.position = target.transform.position;
}
}

//设置相机与人物之间的距离
void SetDistance()
{
transform.Translate(Vector3.forward * theDistance);
}

请问，运行以后发现，场景只是上下移动，并不实现放大缩小，这是为什么？

pinkiller · 发表于 2017-4-13 18:31

很不错

tammukul · 发表于 2017-4-13 18:58

楼主是超人

tammukul · 发表于 2017-4-13 18:42

真心顶

tammukul · 发表于 2017-4-13 19:05

难得一见的好帖

273719669 · 发表于 2017-4-13 19:05

说的非常好

allanCG · 发表于 2017-5-10 16:30

真心顶

三文魚 · 发表于 2017-5-10 16:16

难得一见的好帖

susu · 发表于 2017-5-10 16:25

很好哦

九局下半 · 发表于 2017-5-10 16:40

不错不错

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[脚本] 用鼠标滚轮实现场景放大缩小