code on 2008-12-19

by seyself 18 Dec 2008

Embed

package {
[SWF(width="465", height="465", backgroundColor="#141414", frameRate="30")]
dynamic public class Main extends MovieClip { 
public function Main() { screen = this; container = this; 

//----------------------------- ここから

x = 465 / 2;
y = 465 / 2;

var h:uint = 0;

loop = function():void
{
    var c:DisplayObject = addChild(circle( 4, h += 28, 0.15));
    Tweener.addTween(c, 
    {
        width:600, 
        height:600, 
        alpha:0, 
        time:0.68,
        onComplete : function():void
        {
            removeChild(this);
        }
    });
}

function circle(radius:Number, hue:uint, alpha:Number):Shape
{
    var color2:uint = hsl(hue     , 0.8, 0.80);
    var color1:uint = hsl(hue + 30, 0.6, 0.65);
    var s:Shape = new Shape();
    s.graphics.beginGradientFill
        ("radial", [color1, color2, color2, color1], [0, 0.15, 0.2, 0], 
        [0xB6, 0xE6, 0xE8, 0xFF], gradientBox(-radius, -radius, radius*2, radius*2));
    s.graphics.drawCircle(0, 0, radius);
    s.graphics.endFill();
    return s;
}

function gradientBox(x:Number, y:Number, width:Number, height:Number):Matrix
{
    var m:Matrix = new Matrix();
    m.createGradientBox(width, height, 0, x, y);
    return m;
}


//----------------------------- ここまで

} // end of constructor

public function set loop (value:Function) : void {
if (value is Function) { _loop = function(e:Event):void { value.call(screen, null); }; addEventListener("enterFrame", _loop); }
else { removeEventListener("enterFrame", _loop); }}
private var _loop:Function;

} // end of class

import flash.display.*;
import flash.geom.*;
import flash.filters.*;
import flash.text.*;
import flash.events.*;
import flash.utils.*;
import caurina.transitions.Tweener;
import caurina.transitions.properties.*;

{ // initialize
    ColorShortcuts.init();
    FilterShortcuts.init();
}

} // end of package

var screen:*;
var container:*;
const PI:Number = 3.141592653589793;
const PI2:Number = 6.283185307179586;
const PI_HALF:Number = 1.5707963267948966;
const PI_QUOT:Number = 0.7853981633974483;
const PI_RADIAN:Number = 0.017453292519943295;
const PI_DEGREE:Number = 57.29577951308232;
const E:Number = 2.71828182845905;
function cos (v:Number):Number { return Math.cos(v); }
function sin (v:Number):Number { return Math.sin(v); }
function tan (v:Number):Number { return Math.tan(v); }
function log (v:Number):Number { return Math.log(v); }
function sqrt (v:Number):Number { return Math.sqrt(v); }
function pow (v:Number, n:Number):Number { return Math.pow(v, n); }
function atan2 (y:Number, x:Number):Number { return Math.atan2(y, x); }
function random (max:Number=1, min:Number=0):Number { return Math.random() * (max - min) + min; }
function rgb (r:uint, g:uint, b:uint, a:Number = 0):uint { return a * 0xFF << 24 | r << 16 | g << 8 | b << 0; }
function hsl (h:Number, s:Number, l:Number, a:Number = 0.0):uint { var r:Number = 0, g:Number = 0, b:Number = 0, cmin:Number, cmax:Number; if (s < 0) s = 0; if (s > 1) s = 1; if (l < 0) l = 0; if (l > 1) l = 1; h = h % 360; if (h < 0) h = h + 360; if (l <= 0.5) { cmin = l * ( 1 - s ); cmax = 2 * l - cmin; } else { cmax = l * ( 1 - s ) + s; cmin = 2 * l - cmax; }; r = _h2v(h + 120, cmin, cmax) * 0xFF; g = _h2v(h, cmin, cmax) * 0xFF; b = _h2v(h - 120, cmin, cmax) * 0xFF; a *= 0xFF; return a << 24 | r << 16 | g << 8 | b << 0; }
function _h2v (h:Number, min:Number, max:Number):Number { h = h % 360; if (h <    0) h = h + 360; if (h <   60) return min + (max - min) * h / 60; if (h >=  60 && h < 180) return max; if (h >= 180 && h < 240) return min + (max - min) * (240 - h) / 60; return min; }