物品展示必备代码（旋转与缩放代码…

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using UnityEngine;

public class MouseFollowRotation : MonoBehaviour{

    publicTransformtarget;

    public floatxSpeed=200, ySpeed=200,mSpeed=10;

    public floatyMinLimit=-50,yMaxLimit=50;

    public floatdistance=7, minDistance=2,maxDistance=30;

    //boolneedDamping = false;

    public boolneedDamping=true;

    floatdamping = 5.0f;

    public floatx = 0.0f;

    public floaty = 0.0f;

    public voidSetTarget( GameObject go)

   {

       target = go.transform;

   }

    // Use thisfor initialization

    void Start() {

       Vector3 angles =transform.eulerAngles;

       x = angles.y;

       y = angles.x;

   }

    // Update iscalled once per frame

    voidLateUpdate()

   {

       if(target)

       {

       //use the light button of mouse to rotate thecamera

           if( Input.GetMouseButton(0))

           {

               x += Input.GetAxis("Mouse X") * xSpeed *0.02f;

               y -= Input.GetAxis("Mouse Y") * ySpeed *0.02f;

               y = ClampAngle(y, yMinLimit,yMaxLimit);

               //print(Input.GetAxis("MouseX"));

               //print( Input.GetAxis("MouseY"));

               //print(x);

               //print(y);

               //Unity3D教程手册：[url]www.unitymanual.com[/url]

           }

            distance -= Input.GetAxis("MouseScrollWheel")*mSpeed;

           distance = Mathf.Clamp(distance, minDistance,maxDistance);

           Quaternion rotation = Quaternion.Euler(y, x,0.0f);

           Vector3 disVector = new Vector3( 0.0f, 0.0f, -distance);

           Vector3 position = rotation * disVector +target.position;

           //adjust the camera

           if( needDamping )

           {

               transform.rotation = Quaternion.Lerp(transform.rotation, rotation,Time.deltaTime*damping);

               transform.position = Vector3.Lerp(transform.position, position,Time.deltaTime*damping);

           }

           else

           {

               transform.rotation =rotation;

               transform.position =position;

           }

             //Unity3D教程手册：[url]www.unitymanual.com[/url]

       }

   }

    static floatClampAngle (float angle, float min, floatmax)

   {

    if (angle< -360)

       angle += 360;

    if (angle> 360)

       angle -= 360;

    returnMathf.Clamp (angle, min,max);

   }

}

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