unity3d中判断鼠标是不是在屏幕指定区域内

Posted 2023-03-22

如图，游戏界面内有3个camera，处于屏幕中不同范围
用鼠标可以控制camera视角，如滚轮缩放，右键旋转等，但要求只有在屏幕中该camera范围内操作鼠标才可以控制，并且一次只能控制单个camera
现在我有控制的脚本，但无论在屏幕哪个位置操作鼠标，三个镜头都会跟着一起动。

参考技术A 下面是unity自带的,在Scripts资源包里有拖拽代码，这个拖拽物体必须附加Rigidbody刚体组件。
DragRigidbody.js

var spring = 50.0;
var damper = 5.0;
var drag = 10.0;
var angularDrag = 5.0;
var distance = 0.2;
var attachToCenterOfMass = false;

private var springJoint : SpringJoint;

function Update ()

// Make sure the user pressed the mouse down
if (!Input.GetMouseButtonDown (0))
return;

var mainCamera = FindCamera();

// We need to actually hit an object
var hit : RaycastHit;
if (!Physics.Raycast(mainCamera.ScreenPointToRay(Input.mousePosition), hit, 100))
return;
// We need to hit a rigidbody that is not kinematic
if (!hit.rigidbody || hit.rigidbody.isKinematic)
return;

if (!springJoint)

var go = new GameObject("Rigidbody dragger");
var body : Rigidbody = go.AddComponent ("Rigidbody") as Rigidbody;
springJoint = go.AddComponent ("SpringJoint");
body.isKinematic = true;


springJoint.transform.position = hit.point;
if (attachToCenterOfMass)

var anchor = transform.TransformDirection(hit.rigidbody.centerOfMass) + hit.rigidbody.transform.position;
anchor = springJoint.transform.InverseTransformPoint(anchor);
springJoint.anchor = anchor;

else

springJoint.anchor = Vector3.zero;


springJoint.spring = spring;
springJoint.damper = damper;
springJoint.maxDistance = distance;
springJoint.connectedBody = hit.rigidbody;

StartCoroutine ("DragObject", hit.distance);


function DragObject (distance : float)

var oldDrag = springJoint.connectedBody.drag;
var oldAngularDrag = springJoint.connectedBody.angularDrag;
springJoint.connectedBody.drag = drag;
springJoint.connectedBody.angularDrag = angularDrag;
var mainCamera = FindCamera();
while (Input.GetMouseButton (0))

var ray = mainCamera.ScreenPointToRay (Input.mousePosition);
springJoint.transform.position = ray.GetPoint(distance);
yield;

if (springJoint.connectedBody)

springJoint.connectedBody.drag = oldDrag;
springJoint.connectedBody.angularDrag = oldAngularDrag;
springJoint.connectedBody = null;



function FindCamera ()

if (camera)
return camera;
else
return Camera.main;


编程回忆录已经有八年的历史，是教程团队旗下的一个在线网络培训机构，目前已录制十三个科目，涉及到互联网开发，软件开发，游戏开发（虚拟现实开发）,现在编程回忆录的Unity3D是国内唯一一家中文连载的大型视频教程。零基础开始讲解，通俗易懂 ,以实战为目地，受到众多网友的一致好评。