物品展示必备代码（旋转与缩放代码）

using

UnityEngine;

02

using

System.Collections;

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//
直接放在相机上，控制相机的旋转和缩放 //

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public

class

CameraContro
: MonoBehaviour {

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public

Transform
target;

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public

float

xSpeed=200,
ySpeed=200, mSpeed=10;

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public

float

yMinLimit=-50,
yMaxLimit=50;

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public

float

distance=7,
minDistance=2, maxDistance=30;

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//bool
needDamping = false;

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public

bool

needDamping
=

true

;

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float

damping
= 5.0f;

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public

float

x
= 0.0f;

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public

float

y
= 0.0f;

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18

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public

void

SetTarget(
GameObject go )

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21

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{

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target
= go.transform;

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}

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//
Use this for initialization

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void

Start
() {

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Vector3
angles = transform.eulerAngles;

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x
= angles.y;

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y
= angles.x;

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}

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//
Update is called once per frame

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void

LateUpdate
()

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{

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if

(target)

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{

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//use
the light button of mouse to rotate the camera

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if

(
Input.GetMouseButton(0) )

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{

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x
+= Input.GetAxis(

"Mouse
X"

)
* xSpeed * 0.02f;

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y
-= Input.GetAxis(

"Mouse
Y"

)
* ySpeed * 0.02f;

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y
= ClampAngle(y, yMinLimit, yMaxLimit);

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//print(Input.GetAxis("Mouse
X"));

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//print(
Input.GetAxis("Mouse Y"));

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//print(x);

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//print(y);

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//<a
href="http://www.unitymanual.com" target="_blank" class="relatedlink">unity3d</a>教程手册：www.unitymanual.com

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}

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distance
-= Input.GetAxis(

"Mouse
ScrollWheel"

)*mSpeed;

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

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

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Vector3
disVector =

new

Vector3(
0.0f, 0.0f, -distance );

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Vector3
position = rotation * disVector +target.position;

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//adjust
the camera

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if

(
needDamping )

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{

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

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

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}

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else

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{

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transform.rotation
= rotation;

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transform.position
= position;

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}

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//Unity3D教程手册：www.unitymanual.com

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}

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}

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static

float

ClampAngle
(

float

angle,

float

min,

float

max)

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{

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if

(angle
<-360)

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angle
+= 360;

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if

(angle
>360)

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angle
-= 360;

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return

Mathf.Clamp
(angle,min,max);

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}

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}