forked from: forked from: forked from: flash on 2009-10-5
なんとなく
/**
* Copyright jong ( http://wonderfl.net/user/jong )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/smq5
*/
// forked from ShutheSL's forked from: forked from: flash on 2009-10-5
// forked from uwi's forked from: flash on 2009-10-5
// forked from yd_niku's flash on 2009-10-5
// なんとなく
package {
import flash.display.*;
import flash.events.*;
import flash.geom.*;
[SWF(backgroundColor=0x00,frameRate=60)]
public class FlashTest extends Sprite {
private function init( e:Event = null ):void {
stage.scaleMode = StageScaleMode.EXACT_FIT;
//graphics.beginFill(0x5f0e17);
graphics.beginFill(0x0);
graphics.drawRect(0, 0, stage.stageWidth, stage.stageHeight);
graphics.endFill();
setupSnow();
//testPaletteMap();
}
private function testPaletteMap():void {
var colors:Array = Palette.getColors();
var palette:Sprite = addChild( new ColorMap( colors ) ) as Sprite;
palette.x = (stage.stageWidth - palette.width)/2 >>0;
palette.y = (stage.stageHeight - palette.height)/2 >>0;
}
private var _snow:Vector.<Snow> = new Vector.<Snow>();
private const SLOW_LENGTH:int = 3000;
private function setupSnow():void {
const w:int = stage.stageWidth;
const h:int = stage.stageHeight;
const RADIAN:Number = Math.PI*2;
const CENTER:Point = new Point( w/2>>0, h/2>>0 );
const COLORS:Array = Palette.getColors();
var snow:Snow;
var speed:Number, angle:Number;
for( var i :int = 0; i<SLOW_LENGTH; ++i ) {
snow = new Snow;
snow.y = Math.random()*h;
snow.x = CENTER.x + (Math.random()-0.5)*(30 + snow.y / 2);
snow.vx = Math.random()*2-1;
snow.vy = Math.random()-1;
snow.color = COLORS[COLORS.length*Math.random()>>0];
_snow.push( snow );
}
_canvas = new BitmapData( w, h, true, 0 );
var cbm :Bitmap = addChild( new Bitmap( _canvas ) ) as Bitmap;
cbm.smoothing = true;
_twincles = new BitmapData( w/4>>0, h/4>>0, true, 0 );
_matrix = new Matrix(0.25, 0, 0, 0.25);
var tbm:Bitmap = addChild( new Bitmap( _twincles ) ) as Bitmap;
tbm.scaleX = tbm.scaleY = 4;
tbm.smoothing = true;
tbm.blendMode = BlendMode.ADD;
addEventListener( Event.ENTER_FRAME, updateSnow );
}
private var _matrix:Matrix;
private var _twincles:BitmapData;
private var _canvas:BitmapData;
private var _ctf:ColorTransform = new ColorTransform( 0.98, 0.98, 0.98, 0.99 );
private function updateSnow(e:Event):void {
const w:int = stage.stageWidth;
const h:int = stage.stageHeight;
const CENTER:Point = new Point( w/2>>0, h/2>>0 );
_canvas.lock();
for each( var snow:Snow in _snow ) {
if(snow.color != 0xf0f0f0){
snow.vx += Math.random()*0.1-0.05;
snow.vy += 0.015;
snow.vx *= 0.99;
snow.vy *= 0.99;
}else{
snow.x += Math.random()*0.3-0.15;
}
snow.x += snow.vx;
snow.y += snow.vy;
_canvas.setPixel32( snow.x, snow.y, snow.color | 0xFF<<24 );
if( snow.x > w +50 || snow.x <-50|| snow.y > h + 50|| snow.y <-50 ) {
if(snow.color == 0xf0f0f0){
snow.y = Math.random() * h;
snow.x = Math.random() * 465;
snow.vx = 0;
snow.vy = Math.random() * 0.1 + 0.1;
}else{
snow.y = Math.random()*h;
snow.x = CENTER.x + (Math.random()-0.5)*(30 + snow.y / 2);
snow.vx = Math.random() -0.5;
snow.vy = Math.random()-1;
}
}
}
_canvas.colorTransform( _canvas.rect, _ctf );
_canvas.unlock();
_twincles.draw( _canvas, _matrix );
}
public function FlashTest() {
if( stage ) init();
else addEventListener( Event.ADDED_TO_STAGE, init );
}
}
}
class Palette {
public static const WHITE:uint = 0xF0F0F0;
public static const GREEN:uint = 0x008800;
public static const DARK_GREEN:uint = 0x004400;
public static const RED:uint = 0xCC0000;
public static const YELLOW:uint = 0xFFCC00;
public static const BLACK:uint = 0x101010;
public static const COLORS:Array = [ WHITE, GREEN, RED, YELLOW, GREEN, DARK_GREEN ];
public static function getColors():Array { return COLORS.slice(); }
}
import flash.display.*;
class ColorMap extends Sprite {
public function ColorMap(colors:Array) {
var l:int = colors.length;
var rect:Sprite;
for( var i:int=0; i<l; ++i ) {
addChild( rect = new ColorRect( colors[ i ] ) );
rect.x =i * ColorRect.WIDTH;
rect.y =0;
}
}
}
class ColorRect extends Sprite {
public static const WIDTH:int = 140;
public static const HEIGHT:int = 240;
public function ColorRect( color:uint ) {
super();
graphics.beginFill( color, 1 );
graphics.drawRect( 0, 0, WIDTH, HEIGHT );
graphics.endFill();
}
}
class Snow {
public var x:Number = 0;
public var y:Number = 0;
public var vx:Number = 0;
public var vy:Number = 0;
public var color:uint = 0x00;
}