鼠标拉近旋转拖拽模型

来源：互联网发布：毒药超女网络海选编辑：程序博客网时间：2024/05/24 02:19
把如下代码直接挂在摄像机对象上。最近心情很down，有点懒了就不写注释了，如果有朋友有疑问欢迎给我留言。。
C#
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usingUnityEngine;
usingSystem.Collections;
 
publicclassScript_07_11:MonoBehaviour
{
 
publicTransformtarget;
privateintMouseWheelSensitivity=1;
privateintMouseZoomMin=1;
privateintMouseZoomMax=5;
privatefloatnormalDistance=3;
 
privateVector3normalized;
 
privatefloatxSpeed=250.0f;
privatefloatySpeed=120.0f;
 
privateintyMinLimit=-20;
privateintyMaxLimit=80;
 
privatefloatx=0.0f;
privatefloaty=0.0f;
 
privateVector3screenPoint;
privateVector3offset;
 
privateQuaternionrotation=Quaternion.Euler(newVector3(30f,0f,0f));
privateVector3CameraTarget;
voidStart()
{
 
CameraTarget=target.position;
 
floatz=target.transform.position.z-normalDistance;
transform.position=rotation*newVector3(transform.position.x,transform.position.y,z);
 
transform.LookAt(target);
 
varangles=transform.eulerAngles;
    x=angles.y;
    y=angles.x;
}
 
voidUpdate()
{
 
if(Input.GetMouseButton(1))
{
    x+=Input.GetAxis("Mouse X")*xSpeed*0.02f;
        y-=Input.GetAxis("Mouse Y")*ySpeed*0.02f;
 
y=ClampAngle(y,yMinLimit,yMaxLimit);
 
        varrotation=Quaternion.Euler(y,x,0);
        varposition=rotation*newVector3(0.0f,0.0f,-normalDistance)+CameraTarget;
 
        transform.rotation=rotation;
        transform.position=position;
 
}elseif(Input.GetAxis("Mouse ScrollWheel")!=0)
{
    normalized=(transform.position-CameraTarget).normalized;
 
if(normalDistance>=MouseZoomMin&&normalDistance<=MouseZoomMax)
{
normalDistance-=Input.GetAxis("Mouse ScrollWheel")*MouseWheelSensitivity;
}
if(normalDistance<MouseZoomMin)
{
normalDistance=MouseZoomMin;
}
if(normalDistance>MouseZoomMax)
{
normalDistance=MouseZoomMax;
}
transform.position=    normalized*normalDistance;
 
}elseif(Input.GetMouseButtonDown(2))
{
    screenPoint=Camera.main.WorldToScreenPoint(target.transform.position);
    offset=target.transform.position-Camera.main.ScreenToWorldPoint(newVector3(Input.mousePosition.x,Input.mousePosition.y,screenPoint.z));
}
 
if(Input.GetMouseButton(2))
{
Vector3curScreenPoint=newVector3(Input.mousePosition.x,Input.mousePosition.y,screenPoint.z);
 
Vector3curPosition=Camera.main.ScreenToWorldPoint(curScreenPoint)+offset;
target.transform.position=curPosition;
}
transform.LookAt(CameraTarget);
 
}
 
staticfloatClampAngle(floatangle,floatmin,float  max)
{
if(angle<-360)
angle+=360;
if(angle>360)
angle-=360;
returnMathf.Clamp(angle,min,max);
}
}
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