AS3»ù´¡£ºÍ¼Æ¬ÈÆÖÐÐĵãÐýת(Matrix) ÓëÖ±½Órotation²»»á·¢Ðé

1. package
2. {
3. import flash.display.Bitmap;
4. import flash.display.DisplayObject;
5. import flash.display.Loader;
6. import flash.display.MovieClip;
7. import flash.events.Event;
8. import flash.events.MouseEvent;
9. import flash.events.TimerEvent;
10. import flash.geom.Matrix;
11. import flash.media.Sound;
12. import flash.net.NetStream;
13. import flash.net.URLRequest;
14. import flash.utils.Timer;
16. /**
17. * ...
18. * @author hacker47
19. */
20. public class Main extends MovieClip
21. {
22. private var loader:Loader;
23. private var url:String = "1.jpg";
24. private var bitmap:Bitmap;
25. private var matrix:Matrix;
26. private var angle:Number = 0;
27. private var speed:Number = .05;
29. public function Main()
30. {
31. if (stage) init();
32. else
33. addEventListener(Event.ADDED_TO_STAGE, init);
34. }
36. private function init(e:Event = null):void {
37. loader = new Loader();
38. loader.contentLoaderInfo.addEventListener(Event.COMPLETE, onComplete);
39. loader.load(new URLRequest(url));
41. }
44. private function onComplete(e:Event):void {
45. bitmap = e.target.content as Bitmap;
47. bitmap.x = (stage.stageWidth - bitmap.width) / 2;
48. bitmap.y = (stage.stageHeight - bitmap.height) / 2;
49. addChild(bitmap);
51. matrix = bitmap.transform.matrix;
53. //½«Í¼Æ¬Ðýת30¶È
54. //rotate(bitmap, 30, bitmap.width / 2, bitmap.height / 2, matrix);
55. stage.addEventListener(MouseEvent.MOUSE_MOVE, running1);
57. }
60. private function running(e:Event = null):void {
61. bitmap.x = (stage.stageWidth - bitmap.width) / 2;
62. bitmap.y = (stage.stageHeight - bitmap.height) / 2;
63. rotate(bitmap, angle, bitmap.width / 2, bitmap.height / 2, matrix);
64. angle += speed;
65. //trace(angle);
66. }
68. private function running1(e:MouseEvent):void {
69. bitmap.x = (stage.stageWidth - bitmap.width) / 2;
70. bitmap.y = (stage.stageHeight - bitmap.height) / 2;
72. var dy:Number = mouseY - (bitmap.y + bitmap.height / 2);
73. var dx:Number = mouseX - (bitmap.x + bitmap.width / 2);
74. //bitmap.rotation = Math.atan2(dy, dx) * 180 / Math.PI;
76. rotate(bitmap, Math.atan2(dy, dx), bitmap.width / 2, bitmap.height / 2, matrix);
77. }
79. private function rotate(dis:DisplayObject,rotation:int,px:int,py:int,srcMatrix:Matrix):void {
80. var tx:int = dis.x + px;
81. var ty:int = dis.y + py;
83. var m:Matrix = srcMatrix.clone();
84. m.translate(-tx, -ty);
85. m.rotate(rotation * 180 / Math.PI);
86. m.translate(tx, ty);
87. dis.transform.matrix = m;
89. }
91. }
93. }