flash on 2009-8-19

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lines:258
license : MIT License
modified : 2009-08-19 02:31:54

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1.// forked from shinseki09's forked from: NoiseMaker
2.// forked from kappaLab's NoiseMaker
3.package  
4.{
5.    
6.    import flash.display.Sprite
7.    import flash.display.Shape
8.    import flash.events.Event;
9.    import flash.filters.BlurFilter;
10.    import flash.filters.GlowFilter;
11.    import flash.media.SoundMixer;
12.    import flash.utils.ByteArray;
13.
14.    import flash.events.SampleDataEvent;
15.    import flash.events.TimerEvent;
16.    import flash.media.Sound;
17.    import flash.utils.Timer;
18.    
19.    [SWF(backgroundColor=0x000000, frameRate=60)]
20.
21.    public class NoiseMaker extends Sprite 
22.    {
23.        
24.        private var monitor:Vector.<Shape> = new Vector.<Shape>()
25.        
26.        public function NoiseMaker() 
27.        {   
28.            for (var i:int = 0; i < 256; i++) 
29.            {
30.                var s:Shape = new Shape()
31.                s.graphics.beginFill(0xFFFFFF * Math.random());
32.                s.graphics.drawCircle(0, 0, 20)
33.                //s.x = Math.sin(i) * (stage.stageWidth/2) + stage.stageWidth/2;
34.                //s.y = Math.cos(i) * stage.stageHeight/2 + stage.stageHeight/2;
35.                s.x = stage.stageWidth * i / 256
36.                s.y = stage.stageHeight/2
37.                monitor.push(s)
38.                addChild(s)
39.            }
40.            addEventListener(Event.ENTER_FRAME, onEnterFrame);
41.            filters = [new BlurFilter(5, 5)]
42.            
43.            var count:int = 0
44.            function setVol():void
45.            {
46.                count++
47.                
48.                if (count > 240) {
49.                    count = 1
50.                }
51.                
52.
53.                
54.                if (count < 20) return;
55.                if (count % 20 == 0) {
56.                    volB = 2
57.                }
58.                if (count % 20 == 1
59.                    || count % 20 == 2
60.                    || count % 20 == 3
61.                    || count % 20 == 4
62.                    || count % 20 == 5
63.                    || count % 20 == 6) {
64.                    if(Math.random() > .5)
65.                    volB2 = 2
66.                }
67.                if (count < 40) return;
68.
69.                if (count % 40 == 0) {
70.                    volP = 1
71.                }
72.                if (count % 40 == 5) {
73.                    volP2 = 1
74.                    volN = 1
75.                }
76.                
77.                if (count % 40 == 5
78.                    || count % 40 == 6
79.                    || count % 40 == 7
80.                    || count % 40 == 8
81.                    || count % 40 == 9
82.                    || count % 40 == 10) {
83.                    if(Math.random() > .5)
84.                    volN = 2
85.                    
86.                }
87.                
88.                if (count < 120) return;
89.
90.                if (count % 120 == 0) {
91.                    volK2 = 1
92.                }
93.                if (count % 120 == 11
94.                    || count % 120 == 12
95.                    || count % 120 == 13
96.                    || count % 120 == 14
97.                    || count % 120 == 15
98.                    || count % 120 == 16) {
99.                    if(Math.random() > .3)
100.                    volK = 1
101.                }
102.                if (count % 120 == 11
103.                    || count % 120 == 12
104.                    || count % 120 == 13
105.                    || count % 120 == 14
106.                    || count % 120 == 15
107.                    || count % 120 == 16) {
108.                    if(Math.random() > .1)
109.                    volK3 = 1
110.                }
111.                if (count % 120 == 14
112.                    || count % 120 == 15
113.                    || count % 120 == 16
114.                    || count % 120 == 17
115.                    || count % 120 == 18
116.                    || count % 120 == 19) {
117.                    if(Math.random() > .1)
118.                    volK2 = 1
119.                    volP  = 1
120.                }
121.
122.            }
123.            
124.            var volB:Number  = 0
125.            var volB2:Number = 0
126.            var volK:Number  = 0
127.            var volR:Number  = 0
128.            var volP:Number  = 0
129.            var volP2:Number  = 0
130.            var volN:Number  = 0
131.            var volN2:Number = 0
132.            var volK2:Number  = 0
133.            var volK3:Number  = 0
134.            
135.            var mySound:Sound = new Sound();
136.            function gen(e:SampleDataEvent):void {
137.                
138.                setVol()
139.                
140.                for ( var c:int = 0; c < 2048; c++ ) {
141.                    
142.                    var i:Number = Number(c + e.position)
143.                    var arr:Vector.<Number> = new Vector.<Number>()
144.                    
145.                    var bass:Number = 0;
146.                    volB += (0 - volB) * .0001;
147.                    bass = sine(i,60);
148.                    bass *=  volB
149.                    arr.push(bass)
150.                    
151.                    var bass2:Number = 0;
152.                    volB2 += (0 - volB2) * .0008;
153.                    bass2 = sine(i,20) ;
154.                    bass2 *=  volB2;
155.                    arr.push(bass2)
156.                    
157.                    var kick:Number = 0;
158.                    volK += (0 - volK) * .0001;
159.                    kick = triangle(i, 60);
160.                    kick = (kick < .1)?0:kick;
161.                    kick *=  (volK > .5)?1:volK; 
162.                    arr.push(kick)
163.                    
164.                    var kick2:Number = 0;
165.                    volK2 += (0 - volK2) * .0008;
166.                    kick2 =  square(i, .5) + square(i-1, 5) + noise();
167.                    kick2 *=  volK2                     
168.                    arr.push(kick2)
169.                    
170.                    var kick3:Number = 0;
171.                    volK3 += (0 - volK3) * .0006;
172.                    kick3 =  triangle(i, 2) + square(i,1)
173.                    kick3 *=  volK3                 
174.                    arr.push(kick3)
175.                    
176.                    var piano:Number = 0;
177.                    volP += (0 - volP) * .0001;
178.                    piano = sine(i,2.5)
179.                    piano *=  volP
180.                    arr.push(piano)
181.                    
182.                    var piano2:Number = 0;
183.                    volP2 += (0 - volP2) * .0001;
184.                    piano2 = sine(i,2.75)
185.                    piano2 *=  volP2
186.                    arr.push(piano2)
187.                    
188.                    var nis:Number = 0
189.                    volN += (0 - volN) * .0005;
190.                    nis = noise()
191.                    nis *= volN;
192.                    arr.push(nis)
193.                    
194.                    var nis2:Number = 0
195.                    volN2 += (0 - volN2) * .001 ;
196.                    nis2 = noise() + square(i,.5)
197.                    nis2 *= volN2;
198.                    arr.push(nis2)
199.
200.                    var smpl:Number = 0
201.                    for each (var p:Number in arr) {
202.                        smpl += p
203.                    }
204.                    e.data.writeFloat(smpl);
205.                    e.data.writeFloat(smpl);
206.                }
207.            }
208.
209.            mySound.addEventListener(SampleDataEvent.SAMPLE_DATA,gen);
210.            mySound.play();            
211.            
212.        }
213.        
214.        private function onEnterFrame(e:Event):void 
215.        {
216.            var bytes:ByteArray = new ByteArray();
217.            SoundMixer.computeSpectrum(bytes, false, 0);
218.            
219.            if (bytes.length == 1) return
220.            //trace(bytes.readFloat())
221.            bytes.position = 0
222.            
223.            for (var i:int = 0; i < 256 ; i++ ){
224.                var sample:Number = bytes.readFloat()
225.                monitor[i].scaleX = sample * 1
226.                monitor[i].scaleY = sample * 1
227.            }
228.        }
229.        private function sine(i:Number,f:Number):Number 
230.        {
231.            var smpl:Number = Math.sin(i / Math.PI / f);
232.            return smpl
233.        }
234.        private function square(i:Number, f:Number):Number 
235.        {
236.            var smpl:Number = Math.sin(i/Math.PI/f);
237.            smpl = (smpl > 0)?1: -1;
238.            return smpl
239.        }
240.        private function saw(i:Number,f:Number):Number 
241.        {
242.            f *= 25
243.            var smpl:Number = 1 - (i % f) / f * 2;
244.            return smpl
245.        }
246.        private function triangle(i:Number,f:Number):Number 
247.        {
248.            f *= 25
249.            var smpl:Number =Math.abs(((i) % f) / f - .5) * 4 - 1;
250.            return smpl
251.        }
252.        private function noise():Number
253.        {
254.            return Math.random() * 2 - 1;
255.        }
256.    }
257.    
258.}

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