flash on 2010-2-21
/**
* Copyright termat ( http://wonderfl.net/user/termat )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/lDl5
*/
package
{
import flash.display.MovieClip;
import flash.display.Sprite;
import flash.events.Event;
import flash.filters.BlurFilter;
import flash.text.TextFormat;
import flash.display.BitmapData;
import flash.display.Bitmap;
import flash.filters.BitmapFilterQuality;
[SWF(width=480,height=480,backgroundColor=0x000000)]
public class Practice30 extends Sprite {
private var bmpdata:BitmapData;
private var bmp:Bitmap;
private var wx:Number;
private var wy:Number;
private var angle:Number;
private var filter:BlurFilter;
private const SPARK_COLOR:uint = 0x664020;
public function Practice30() {
bmpdata = new BitmapData(480, 480, false, 0x000000);
bmp = new Bitmap(bmpdata);
filter = new BlurFilter(16, 16, BitmapFilterQuality.HIGH);
var mc:MovieClip = new MovieClip();
mc.filters = [filter];
mc.addChild(bmp);
addChild(mc);
angle = 0;
for (var i:int = 0; i < 100; i++){
var tf:TextFormat = new TextFormat();
tf.size = 24*Math.random();
tf.color = 0xff0000;
tf.bold = true;
var tt:TextImage = new TextImage("火", tf, 0xffffff);
tt.update();
var f:Fire = new Fire();
f.addChild(tt);
f.x = 480 * Math.random();
f.y = 480 * Math.random();
f.rotationZ = 360 * Math.random();
f.size = tf.size as Number;
this.addChild(f) ;
this.addEventListener(Event.ENTER_FRAME, update);
}
}
private function updateWind():void {
angle += 5 * Math.random() - 2.5;
angle = Math.min(Math.max(angle, -15), 15);
wx = Math.cos(angle / 180 * Math.PI)+1;
wy = Math.sin(angle / 180 * Math.PI);
}
private function update(e:Event):void {
bmpdata.lock();
bmpdata.draw(this);
bmpdata.unlock();
updateWind();
for (var i:int = 1; i < this.numChildren; i++) {
var obj:Fire = this.getChildAt(i) as Fire;
obj.y += 9.8 * 0.1667 * 0.1667 + wy;
if (obj.y > 480) obj.y = obj.y - 480;
if (obj.y < 0) obj.y = 480 + obj.y;
obj.x += wx+obj.size/10;
if (obj.x > 480) obj.x = obj.x - 480;
if (obj.x < 0) obj.x = 480 + obj.x;
obj.rotationZ += Math.random()*2;
obj.update();
}
}
}
}
import flash.display.GradientType;
import flash.display.MovieClip;
import flash.geom.Matrix;
import flash.text.TextField;
import flash.text.TextFormat;
import flash.display.Bitmap;
import flash.display.BitmapData;
class Fire extends MovieClip {
private static const SPARK_COLOR:uint = 0x664020;
private static const REFLECTION_COLOR:uint = 0xFF1800;
private const radius:Number = 50;
public var size:Number;
public function update():void {
graphics.clear();
var rr:Number = radius - this.x / 4;
if (rr < 0) return;
var matrix:Matrix = new Matrix();
matrix.createGradientBox(rr * 2, rr * 2, 0, 0, 0);
graphics.beginGradientFill(GradientType.RADIAL, [ SPARK_COLOR, REFLECTION_COLOR ], [ 1, 0 ], [ 0, 255 ], matrix);
graphics.drawCircle(0, 0, rr);
graphics.endFill();
}
}
class TextImage extends MovieClip {
private var backGround:uint;
private var str:String;
private var format:TextFormat;
public function TextImage(s:String, f:TextFormat, c:uint):void {
str = s;
backGround = c;
format = f;
}
public function update():void {
while (this.numChildren > 0) this.removeChildAt(this.numChildren - 1);
var text:TextField = new TextField();
text.defaultTextFormat = format;
text.text = str;
text.width = text.textWidth;
text.height = text.textHeight;
var mc_tmp:MovieClip = new MovieClip();
mc_tmp.addChild(text);
var bd:BitmapData = new BitmapData(text.textWidth + 2, text.textHeight + 2);
bd.fillRect(bd.rect,backGround);
bd.lock();
bd.draw(mc_tmp);
bd.unlock();
var mc:MovieClip = new MovieClip();
mc.addChild(new Bitmap(bd, "auto", true));
mc.x = -text.textWidth/2;
mc.y = -text.textHeight/2;
addChild(mc);
}
}