forked from: forked from: Metaballs shader + beat detection
Wonderfl won't let me change the license, but most of
_mutast's original code is gone (see the diff).
I don't know (or care) what that implies legally, but
as far as I'm concerned you can do whatever you want
with the code.
...
@author swc
音はTsabeat より拝借
http://www.ektoplazm.com/free-music/tsabeat-warp-speed-ep/
// forked from bradsedito's forked from: Metaballs shader + beat detection
// forked from yonatan's Metaballs shader + beat detection
// forked from _mutast's ビートを検知してpv3dでエフェクト
// Wonderfl won't let me change the license, but most of
// _mutast's original code is gone (see the diff).
//
// I don't know (or care) what that implies legally, but
// as far as I'm concerned you can do whatever you want
// with the code.
package
{
/**
* ...
* @author swc
* 音はTsabeat より拝借
* http://www.ektoplazm.com/free-music/tsabeat-warp-speed-ep/
*/
import flash.display.*;
import flash.events.*;
import flash.filters.*;
import flash.media.*;
import flash.net.URLRequest;
import flash.system.Security;
import flash.utils.*;
import flash.geom.*;
import mx.utils.*;
import caurina.transitions.Tweener;
[SWF(backgroundColor="#00fff0", frameRate=30)]
public class Main extends Sprite {
private var channel:SoundChannel;
private var trans:SoundTransform;
private var mySound:Sound;
private var beats:Number = 0;
private var shader:Shader;
private var filter:ShaderFilter;
public static const SIZE:Number = 465/2;
public var r:Number = 0;
public var br:Number = 1;
public var exp:Number = 20;
public var offset:Number = 0;
public var cvs:Bitmap;
public var bmd:BitmapData;
public function Main() {
stage.quality = "low";
Wonderfl.capture_delay(15);
Security.loadPolicyFile("http://mutast.heteml.jp/crossdomain.xml");
mySound = new Sound();
mySound.addEventListener(Event.COMPLETE, play);
mySound.load(new URLRequest("http://commondatastorage.googleapis.com/bradsedito/audio/Leo%20Abrahams%20-%20Spider.mp3"));
init();
}
public function init():void {
var dec:Base64Decoder = new Base64Decoder;
dec.decode(shaderString);
filter = new ShaderFilter(shader = new Shader(dec.drain()));
shader.data["size"]["value"] = [SIZE, SIZE];
shader.data["center1"]["value"] = [SIZE/2, SIZE/2, 1];
shader.data["center2"]["value"] = [SIZE/2, SIZE/2, 1];
shader.data["center3"]["value"] = [SIZE/2, SIZE/2, 1];
bmd = new BitmapData(SIZE, SIZE);
cvs = new Bitmap(bmd);
cvs.scaleX = cvs.scaleY = 2;
addChild(cvs);
exp = 0;
Tweener.addTween(this, {r: SIZE/4, br: 1000, exp: 20, time: 10, transition: "easeInSine"});
addEventListener(Event.ENTER_FRAME, loop);
}
public function play(e:Event):void {
var channel:SoundChannel = new SoundChannel();
channel = mySound.play();
channel.addEventListener(Event.SOUND_COMPLETE, byebye);
}
public function byebye(e:Event):void {
Tweener.addTween( this, {
exp: 0,
offset: 20,
r: 0,
br: 1,
delay: 0.2,
time: 10,
transition: "easeOutSine",
onComplete: function():void {
removeEventListener(Event.ENTER_FRAME, loop);
}
});
}
public function hit():void {
if (!beats) {
Tweener.removeAllTweens();
}
beats++;
exp = 0;
Tweener.addTween(this, {
offset: Math.random() * (beats%2 ? 2 : -2),
time: 0.36, transition: "easeInQuart",
br: Math.random() * 1500 + 300,
r: Math.random() * SIZE / 4 + SIZE / 6 });
}
public function loop(e:Event):void {
var bytes:ByteArray = new ByteArray();
SoundMixer.computeSpectrum(bytes, false, 0);
bytes.position = 0;
var rf:Number;
var count:int = 0;
for (var q:int = 0; bytes.bytesAvailable >= 4; q++) {
rf = bytes.readFloat();
var t:Number = Math.abs(rf);
if (t >= 0.4 && q >256) {
count ++;
}
if (count >= 110) {
hit();
}
}
var time:Number = offset + getTimer() / 600;
var s:Function = Math.sin;
var c:Function = Math.cos;
var pi:Number = Math.PI;
var ctr:Number = SIZE/2;
var t1:Number = time;
var t2:Number = time + 3.14 * 2 / 3;
var t3:Number = time + 3.14 * 4 / 3;
shader.data["size"]["value"] = [SIZE, SIZE];
shader.data["exponent"]["value"] = [exp];
if(beats) {
var pow:Number = Math.max(0, 15 - count/150*15);
if( exp < pow ) {
exp = (exp*11+pow) / 12;
} else {
exp = pow;
}
shader.data["center1"]["value"] = [ctr + r*s(t1) - r/3*c(t1*1.5), ctr - r*c(t1) + r/4*s(t1*1.5), br + br * s(t1) / 2];
shader.data["center2"]["value"] = [ctr + r*s(t2) - r/3*c(t2*1.5), ctr - r*c(t2) + r/4*s(t2*1.5), br + br * s(t2) / 2];
shader.data["center3"]["value"] = [ctr + r*s(t3) - r/3*c(t3*1.5), ctr - r*c(t3) + r/4*s(t3*1.5), br + br * s(t3) / 2];
} else {
shader.data["center1"]["value"] = [ctr + r*s(t1) - r/3*c(t1), ctr - r*c(t1) + r/4*s(t1), br + br/2*s(t1*5)];
shader.data["center2"]["value"] = [ctr + r*s(t2) - r/3*c(t2), ctr - r*c(t2) + r/4*s(t2), br + br/2*s(t2*5)];
shader.data["center3"]["value"] = [ctr + r*s(t3) - r/3*c(t3), ctr - r*c(t3) + r/4*s(t3), br + br/2*s(t3*5)];
}
bmd.applyFilter(bmd, bmd.rect, new Point(0,0), filter);
}
private var shaderString:String = "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";
}
}
/* Shader:
parameter "_OutCoord", float2, f0.rg, in
texture "src", t0
parameter "dst", float4, f1, out
parameter "size", float2, f2.rg, in
meta "defaultValue", 512, 512
meta "minValue", 0, 0
meta "maxValue", 512, 512
parameter "exponent", float, f4.r, in ; cutoff
meta "defaultValue", 10
meta "minValue", 0
meta "maxValue", 100
parameter "center1", float3, f5.rgb, in ; x, y, size
meta "defaultValue", 150, 160, 10160
meta "minValue", 0, 0, 0
meta "maxValue", 1, 1, 40000
parameter "center2", float3, f6.rgb, in
meta "defaultValue", 100, 400, 11160
meta "minValue", 0, 0, 0
meta "maxValue", 1, 1, 40000
parameter "center3", float3, f7.rgb, in
meta "defaultValue", 400, 50, 11160
meta "minValue", 0, 0, 0
meta "maxValue", 1, 1, 40000
;----------------------------------------------------------
set f1.rgb, 0
mov f3.ba, f5.rg
sub f3.ba, f0.rg
mul f3.ba, f3.ba
add f3.a, f3.b
mov f3.b, f5.b
div f3.b, f3.a
add f1.r, f3.b
mov f3.ba, f6.rg
sub f3.ba, f0.rg
mul f3.ba, f3.ba
add f3.a, f3.b
mov f3.b, f6.b
div f3.b, f3.a
add f1.r, f3.b
mov f3.ba, f7.rg
sub f3.ba, f0.rg
mul f3.ba, f3.ba
add f3.a, f3.b
mov f3.b, f7.b
div f3.b, f3.a
add f1.r, f3.b
pow f1.r, f4.r
mov f1.g, f1.r
mov f1.b, f1.r
set f1.a, 1
assembler: http://wonderfl.net/code/ff8dbc0a3468ef771745856eb977672e61cf0fdb/fullscreen
*/