/**
* Copyright mtok ( http://wonderfl.net/user/mtok )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/hn7N
*/
// forked from checkmate's Checkmate vol4 Massmedian
package {
import flash.display.*;
import flash.events.*;
import flash.net.*;
import flash.geom.*;
[SWF(backgroundColor=0x00,frameRate=60)]
public class FlashTest extends Sprite {
/*
* [Checkmate Vol4 by MASSMEDIAN]
* Please produce the illumination freely with a color palette.
*
* usage of Palette class
* A single value is used.
* var white:uint = Palette.WHITE;
* var green:uint = Palette.GREEN;
* var red:uint = Palette.RED;
* var gold:uint = Palette.GOLD;
* var silver:uint = Palette.SILVER;
* var black:uint = Palette.BLACK;
* All the values are used.
* var colors:Array = Palette.getColors();
*/
private function init( e:Event = null ):void {
resize();
drawXmasTree()
createSnow();
//showPaletteMap();
}
public var rect:Rectangle= new Rectangle();
public var center:Point = new Point();
private const SLOW_LENGTH:int = 1000;
private var _snow:Vector.<Snow> = new Vector.<Snow>();
private var _twincles:BitmapData;
private var _canvas:BitmapData;
private var _matrix:Matrix;
private var _ctf:ColorTransform = new ColorTransform( 0.75, 0.8, 0.8, 0.95 );
private function createSnow():void {
// The value used for generation is prepared.
const RADIAN:Number = Math.PI*2;
const COLORS:Array = Palette.getColors();
// The canvas to draw in illumination.
var snow:Snow, speed:Number, angle:Number;
for( var i :int = 0; i<SLOW_LENGTH; ++i ) {
snow = new Snow();
snow.x = (Math.random()-0.5)*50 + center.x;
snow.y = Math.random()*rect.height;
snow.vx = (Math.random()-0.5) * 4;
snow.vy = Math.random()*-2;
snow.color = COLORS[int(COLORS.length*Math.random())];
_snow.push( snow );
}
// The canvas to draw in illumination.
_canvas = new BitmapData( rect.height, rect.height, true, 0 );
var cbm :Bitmap = addChild( new Bitmap( _canvas ) ) as Bitmap;
cbm.smoothing = true;
// The canvas to draw in twincles.
_twincles = new BitmapData( rect.width/4>>0, rect.height/4>>0, true, 0 );
var tbm:Bitmap = addChild( new Bitmap( _twincles ) ) as Bitmap;
tbm.scaleX = tbm.scaleY = 4;
tbm.smoothing = true;
tbm.blendMode = BlendMode.ADD;
// Matrix to draw by size of 1/4
_matrix = new Matrix(0.25, 0, 0, 0.25);
addEventListener( Event.ENTER_FRAME, updateSnow );
}
private function updateSnow(e:Event):void {
_canvas.lock();
for each( var snow:Snow in _snow ) {
// The Brownian motion is added.
snow.vx += (Math.random()-0.5)*0.04;
snow.vy += (Math.random()-0.5)*0.04;
// Gravity is added.
//snow.vy += 0.015;
// The wind drag is added.
snow.vx *= 0.987;
snow.vy *= 0.987;
// The speed is added to the position.
snow.x += snow.vx;
snow.y += snow.vy;
// draw to canvas in position.
_canvas.setPixel32( snow.x, snow.y, snow.color | 0xFF<<24 );
// It resets it when going out of the area.
if( snow.x < rect.x -50 || snow.y < rect.y -50 || snow.x > rect.width +50 || snow.y > rect.height + 50 ) {
snow.x = center.y + (Math.random() -0.5) * 10;
snow.y = Math.random() *-30;
snow.vx = (Math.random() -0.5) * 3;
snow.vy = Math.random() *-3;
}
}
// ColorTransform(effect that dose blackout) is made to adjust.
_canvas.colorTransform( _canvas.rect, _ctf );
_canvas.unlock();
// draw to canvas in twincles by using Matrix.
_twincles.draw( _canvas, _matrix );
}
private function resize( e:Event = null ):void {
rect.width = stage.stageWidth;
rect.height= stage.stageHeight;
center.x = rect.width /2>>0;
center.y = rect.height /2>>0;
}
private function drawXmasTree():void {
var loader :Loader = new Loader();
addChild( loader );
loader.load( new URLRequest("http://swf-dev.wonderfl.net/static/assets/checkmate04/tree.jpg") );
}
private function showPaletteMap():void {
var colors:Array = Palette.getColors();
var palette:Sprite = addChild( new ColorMap( colors ) ) as Sprite;
palette.x = ( rect.width - palette.width ) /2 >>0;
palette.y = ( rect.height- palette.height ) /2 >>0;
}
public function FlashTest() {
if( stage ) init();
else addEventListener( Event.ADDED_TO_STAGE, init );
}
}
}
/* for Checkmate */
class Palette {
public static const WHITE:uint = 0xF0F0F0;
public static const GREEN:uint = 0x008800;
public static const RED:uint = 0xCC0000;
public static const GOLD:uint = 0xFFCC66;
public static const SILVER:uint = 0xCCCCCC;
public static const BLACK:uint = 0x101010;
public static const COLORS:Array = [ WHITE, GREEN, RED, GOLD, SILVER, BLACK ];
public static function getColors():Array { return COLORS.slice(); }
}
/* for Example. */
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;
}
/* for debug. */
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;
}
}
}
/* for debug. */
class ColorRect extends Sprite {
public static const WIDTH:int = 40;
public static const HEIGHT:int = 40;
public function ColorRect( color:uint ) {
super();
graphics.beginFill( color, 1 );
graphics.drawRect( 0, 0, WIDTH, HEIGHT );
graphics.endFill();
}
}