flash as利用Bitmap特效打造被风吹散效果

　　Bitmap特效，被风吹散效果。

详细代码：

1. package
   
2. 
   
3. {
   
4. 
   
5. import flash.display.Bitmap;
   
6. 
   
7. import flash.display.BitmapData;
   
8. 
   
9. import flash.display.MovieClip;
   
10. 
    
11. import flash.display.Sprite;
    
12. 
    
13. import flash.events.Event;
    
14. 
    
15. import flash.filters.BlurFilter;
    
16. 
    
17. import flash.geom.Point;
    
18. 
    
19. import flash.geom.Rectangle;
    
20. 
    
21. 
    
22. 
    
23. /**
    
24. 
    
25. * ...
    
26. 
    
27. * @author flashk
    
28. 
    
29. */
    
30. 
    
31. public class Min extends Sprite
    
32. 
    
33. {
    
34. 
    
35. public var a_mc:MovieClip;
    
36. 
    
37. 
    
38. 
    
39. private var bd:BitmapData;
    
40. 
    
41. private var bds:BitmapData;
    
42. 
    
43. private var ps:Array;
    
44. 
    
45. 
    
46. 
    
47. public function Min() {
    
48. 
    
49. bd = new BitmapData(1420, 300, true);
    
50. 
    
51. bds = new BitmapData(a_mc.width, a_mc.height, true);
    
52. 
    
53. bds.draw(a_mc);
    
54. 
    
55. var bp:Bitmap = new Bitmap();
    
56. 
    
57. bp.bitmapData = bd;
    
58. 
    
59. this.addChild(bp);
    
60. 
    
61. start();
    
62. 
    
63. }
    
64. 
    
65. private function start():void {
    
66. 
    
67. ps = new Array();
    
68. 
    
69. for (var i:int = 1; i <= bds.width; i++) {
    
70. 
    
71. for (var j:int = 1; j <= bds.height; j++) {
    
72. 
    
73. ps.push(new Po(i, j, bds.getPixel32(i, j),bds.width));
    
74. 
    
75. }
    
76. 
    
77. }
    
78. 
    
79. this.addEventListener(Event.ENTER_FRAME, render);
    
80. 
    
81. this.removeChild(a_mc);
    
82. 
    
83. }
    
84. 
    
85. private function render(event:Event):void {
    
86. 
    
87. var po;
    
88. 
    
89. //bd.fillRect(new Rectangle(0, 0, bd.width, bd.height), 0);
    
90. 
    
91. bd.applyFilter(bd, new Rectangle(0, 0, bd.width, bd.height), new Point(0, 0), new BlurFilter(2, 2, 1));
    
92. 
    
93. bd.lock();
    
94. 
    
95. var len = ps.length;
    
96. 
    
97. for (var i:int = 0 ; i < len; i+=1) {
    
98. 
    
99. po = ps[i];
    
100. 
     
101. po.move();
     
102. 
     
103. bd.setPixel32(po.x, po.y+80, po.color);
     
104. 
     
105. }
     
106. 
     
107. bd.unlock();
     
108. 
     
109. }
     
110. 
     
111. }
     
112. 
     
113. 
     
114. 
     
115. }
     
116. 
     
117. class Po {
     
118. 
     
119. public var x:Number;
     
120. 
     
121. public var y:Number;
     
122. 
     
123. public var color:uint;
     
124. 
     
125. private var speed:Number;
     
126. 
     
127. private var r:Number = 0;
     
128. 
     
129. private var by:Number;
     
130. 
     
131. 
     
132. 
     
133. public function Po(x:Number, y:Number, color:uint,w:Number) {
     
134. 
     
135. this.x = x;
     
136. 
     
137. this.y = y;
     
138. 
     
139. this.color = color;
     
140. 
     
141. this.speed = Math.random() * 10 - (w - x) / 2;
     
142. 
     
143. //r = Math.random() * 50;
     
144. 
     
145. this.by = y;
     
146. 
     
147. }
     
148. 
     
149. public function move():void {
     
150. 
     
151. speed += 0.5;
     
152. 
     
153. if(speed>0){
     
154. 
     
155. this.x += speed;
     
156. 
     
157. r += 10;
     
158. 
     
159. this.y = this.by + Math.sin(r* Math.PI/180)*50;
     
160. 
     
161. }
     
162. 
     
163. }
     
164. 
     
165. }

源文件和swf下载s2demo.rar：

再来玩个加鼠标控制的，美女被风吹散...

1. package
   
2. 
   
3. {
   
4. 
   
5. import flash.display.Bitmap;
   
6. 
   
7. import flash.display.BitmapData;
   
8. 
   
9. import flash.display.MovieClip;
   
10. 
    
11. import flash.display.Sprite;
    
12. 
    
13. import flash.events.Event;
    
14. 
    
15. import flash.filters.BlurFilter;
    
16. 
    
17. import flash.filters.ColorMatrixFilter;
    
18. 
    
19. import flash.geom.ColorTransform;
    
20. 
    
21. import flash.geom.Point;
    
22. 
    
23. import flash.geom.Rectangle;
    
24. 
    
25. 
    
26. 
    
27. /**
    
28. 
    
29. * ...
    
30. 
    
31. * @author flashk
    
32. 
    
33. */
    
34. 
    
35. public class Min extends Sprite
    
36. 
    
37. {
    
38. 
    
39. public var a_mc:MovieClip;
    
40. 
    
41. 
    
42. 
    
43. private var bd:BitmapData;
    
44. 
    
45. private var bds:BitmapData;
    
46. 
    
47. private var ps:Array;
    
48. 
    
49. private var ns:uint;
    
50. 
    
51. private var checks:Array;
    
52. 
    
53. private var noise:BitmapData;
    
54. 
    
55. private var randomSeed:Number;
    
56. 
    
57. private var image:BitmapData;
    
58. 
    
59. private var rect:Rectangle;
    
60. 
    
61. private var cTra:ColorTransform;
    
62. 
    
63. private var vectorList:Array;
    
64. 
    
65. private var num:uint = 10000;
    
66. 
    
67. 
    
68. 
    
69. public function Min() {
    
70. 
    
71. 
    
72. 
    
73. noise = new BitmapData(a_mc.width, a_mc.height, false, 0x000000);
    
74. 
    
75. randomSeed = Math.floor(Math.random() * 0xFFFF);
    
76. 
    
77. noise.perlinNoise(a_mc.width, a_mc.height, 4, randomSeed, false, false, 1 | 2 | 0 | 0 );
    
78. 
    
79. image = new BitmapData(465, 465, true, 0);
    
80. 
    
81. this.addChild(new Bitmap(image));
    
82. 
    
83. rect = new Rectangle( 0, 0, 465, 465 )
    
84. 
    
85. cTra = new ColorTransform(1, 1, 1, 0.9, 0, 0, 0, 0)
    
86. 
    
87. 
    
88. 
    
89. bd = new BitmapData(600, 450, true);
    
90. 
    
91. bds = new BitmapData(a_mc.width, a_mc.height, true,0x00FFFFFF);
    
92. 
    
93. bds.draw(a_mc);
    
94. 
    
95. var bp:Bitmap = new Bitmap();
    
96. 
    
97. bp.bitmapData = bd;
    
98. 
    
99. ps = new Array();
    
100. 
     
101. start(1);
     
102. 
     
103. this.removeChild(a_mc);
     
104. 
     
105. }
     
106. 
     
107. private function start(s:uint):void {
     
108. 
     
109. ns = s;
     
110. 
     
111. vectorList = [];
     
112. 
     
113. for (var i:int = s; i <= bds.width; i++) {
     
114. 
     
115. for (var j:int = 1; j <= bds.height; j++) {
     
116. 
     
117. vectorList.push(new Po(i, j, bds.getPixel32(i, j),bds.width,this));
     
118. 
     
119. }
     
120. 
     
121. }
     
122. 
     
123. this.addEventListener(Event.ENTER_FRAME, render);
     
124. 
     
125. }
     
126. 
     
127. private function render(event:Event):void {
     
128. 
     
129. image.colorTransform( rect, cTra );
     
130. 
     
131. image.lock();
     
132. 
     
133. var len:uint = vectorList.length;
     
134. 
     
135. for (var i:uint = 0; i < len; i++) {
     
136. 
     
137. var body:Po = vectorList[i];
     
138. 
     
139. body.speed += 0.4;
     
140. 
     
141. if(body.speed>0){
     
142. 
     
143. var col:Number = noise.getPixel(body.px, body.py);
     
144. 
     
145. body.ax += ((col >> 16 & 0xFF) - 128)/1000;
     
146. 
     
147. body.ay += ((col >> 8 & 0xFF) -128)/1000;
     
148. 
     
149. 
     
150. 
     
151. body.vx += body.ax;
     
152. 
     
153. body.vy += body.ay;
     
154. 
     
155. body.px += body.vx;
     
156. 
     
157. body.py += body.vy;
     
158. 
     
159. 
     
160. 
     
161. body.ax *= .975;
     
162. 
     
163. body.ay *= .975;
     
164. 
     
165. body.vx *= .92;
     
166. 
     
167. body.vy *= .92;
     
168. 
     
169. }
     
170. 
     
171. if (body.px < 0) {
     
172. 
     
173. vectorList.splice(i, 1);
     
174. 
     
175. len -= 1;
     
176. 
     
177. }
     
178. 
     
179. image.setPixel32( body.px, body.py+100, body.color );
     
180. 
     
181. }
     
182. 
     
183. image.unlock();
     
184. 
     
185. }
     
186. 
     
187. }
     
188. 
     
189. }
     
190. 
     
191. class Po {
     
192. 
     
193. public var x:Number;
     
194. 
     
195. public var y:Number;
     
196. 
     
197. public var color:uint;
     
198. 
     
199. public var speed:Number;
     
200. 
     
201. private var r:Number = 0;
     
202. 
     
203. private var by:Number;
     
204. 
     
205. public var vx:Number = 0;
     
206. 
     
207. public var vy:Number = 0;
     
208. 
     
209. public var ax:Number = 0;
     
210. 
     
211. public var ay:Number = 0;
     
212. 
     
213. public var px:Number;
     
214. 
     
215. public var py:Number;
     
216. 
     
217. 
     
218. 
     
219. public function Po(x:Number, y:Number, color:uint,w:Number,eventLis:Object) {
     
220. 
     
221. this.x = x;
     
222. 
     
223. this.y = y;
     
224. 
     
225. this.px = x;
     
226. 
     
227. this.py = y;
     
228. 
     
229. this.color = color;
     
230. 
     
231. this.speed = Math.random() * 15 - (w - x) / 3 -20;
     
232. 
     
233. this.by = y;
     
234. 
     
235. }
     
236. 
     
237. }

鼠标控制swf效果：s2wind-mouseControl.rar