鼠标划过的表现

 1 这是一段拖动物体的代码，比较简洁明了，对了解unity3d脚本概念有些帮助！在此加上注释分享！
 2 
 3 var mouseOverColor = Color.blue;//声明变量为蓝色
 4 private var originalColor : Color;//声明变量存储本来颜色
 5 
 6 function Start () {
 7     originalColor = renderer.sharedMaterial.color;//开始时得到物体本来着色
 8 }
 9 
10 function OnMouseEnter () {
11     renderer.material.color = mouseOverColor;//当鼠标滑过时改变物体颜色为蓝色
12 }
13 
14 function OnMouseExit () {
15     renderer.material.color = originalColor;//当鼠标滑出时恢复物体本来颜色
16 }
17 
18 function OnMouseDown () {
19     var screenSpace = Camera.main.WorldToScreenPoint(transform.position);//三维物体坐标转屏幕坐标
20     //将鼠标屏幕坐标转为三维坐标，再算出物体位置与鼠标之间的距离
21     var offset = transform.position - Camera.main.ScreenToWorldPoint(Vector3(Input.mousePosition.x, Input.mousePosition.y, screenSpace.z));
22     print("down");
23     while (Input.GetMouseButton(0))
24     {
25         //print("button0");
26         var curScreenSpace = Vector3(Input.mousePosition.x, Input.mousePosition.y, screenSpace.z);
27      var curPosition = Camera.main.ScreenToWorldPoint(curScreenSpace) + offset;
28         transform.position = curPosition;
29         yield;//这个很重要，循环执行
30     }
31 }