Sand Traveler

Sand Traveler
stage click to reset

@see http://www.complexification.net/gallery/machines/sandTraveler/index.php
Special commission for Sónar 2004, Barcelona
sand painter implementation of City Traveler + complexification.net

j.tarbell May, 2004
Albuquerque, New Mexico
complexification.net

Processing 0085 Beta syntax update
j.tarbell April, 2005

@mxmlc -o bin/SandTraveler.swf -load-config+=obj\Alltest3Config.xml
@author jc at bk-zen.com

bkzen

forked:10
favorite:51
lines:204
license : MIT License
modified : 2010-01-30 20:57:35

Embed: Tweet

package 
{
	import flash.display.Bitmap;
	import flash.display.BitmapData;
	import flash.display.Sprite;
	import flash.display.StageAlign;
	import flash.display.StageScaleMode;
	import flash.events.Event;
	import flash.events.MouseEvent;
	
	/**
	 * Sand Traveler
	 * stage click to reset
	 * 
	 * @see http://www.complexification.net/gallery/machines/sandTraveler/index.php
	 * Special commission for Sónar 2004, Barcelona
	 * sand painter implementation of City Traveler + complexification.net
	 * 
	 * j.tarbell   May, 2004
	 * Albuquerque, New Mexico
	 * complexification.net
	 * 
	 * Processing 0085 Beta syntax update
	 * j.tarbell   April, 2005
	 * 
	 * @mxmlc -o bin/SandTraveler.swf -load-config+=obj\Alltest3Config.xml
	 * @author jc at bk-zen.com
	 */
	[SWF (backgroundColor = "0xFFFFFF", frameRate = "60", width = "465", height = "465")]
	public class SandTraveler extends Sprite
	{
		private var cities:Vector.<City>;
		private var bmd: BitmapData;
		private var w: int;
		private var h: int;
		private var size: int;
		private var bmp:Bitmap;
		private var cnt:int;
		
		public function SandTraveler() 
		{
			Wonderfl.capture_delay( 30 );
			if (stage) init();
			else addEventListener(Event.ADDED_TO_STAGE, init);
		}
		
		private function init(e: Event = null): void 
		{
			removeEventListener(Event.ADDED_TO_STAGE, init);
			//
			stage.scaleMode = StageScaleMode.NO_SCALE;
			stage.align = StageAlign.TOP_LEFT;
			cities = new Vector.<City>(LENGTH, true);
			addChild(bmp = new Bitmap(null, "auto", true));
			resetAll();
			addEventListener(Event.ENTER_FRAME, loop);
			stage.addEventListener(Event.RESIZE, onResize);
			stage.addEventListener(MouseEvent.CLICK, onClick);
		}
		
		private function onClick(e: MouseEvent): void 
		{
			resetAll();
		}
		
		private function onResize(e: Event): void 
		{
			resetAll();
		}
		
		private function loop(e: Event): void 
		{
			var c: City, f: City, i: int, j: int, k: int, t: Number, dx: Number, dy: Number, dst: uint, src: uint, tdx: int, tdy: int;
			var rd: int, gd: int, bd: int, rs: int, gs: int, bs: int, s: SandPainter, ww: Number, a: Number;
			bmd.lock();
			for (i = 0; i < LENGTH; i++) 
			{
				c = cities[i], f = c.friend;
				c.x += (c.vx = (c.vx + (f.x - c.x) / size) * 0.936);
				c.y += (c.vy = (c.vy + (f.y - c.y) / size) * 0.936);
				for (j = 0; j < RLENGTH; j++) 
				{
					t = random(PI2);
					dx = tdx = (Math.sin(t) * (c.x - f.x) + (c.x + f.x)) * 0.5;
					dy = tdy = (Math.sin(t) * (c.y - f.y) + (c.y + f.y)) * 0.5;
					if (random(1000) > 990) dx += random(3) - random(3), dy += random(3) - random(3);
					dst = bmd.getPixel(dx, dy);
					src = f.color;
					rd = (dst >> 16) & 0xFF;
					gd = (dst >>  8) & 0xFF;
					bd =  dst        & 0xFF;
					rs = (src >> 16) & 0xFF;
					gs = (src >>  8) & 0xFF;
					bs =  src        & 0xFF;
					bmd.setPixel(dx, dy, ((rd * 0.8125 + rs * 0.1875) << 16) | ((gd * 0.8125 + gs * 0.1875) << 8) | (bd * 0.8125 + bs * 0.1875));
					dx = -1 * tdx;
					dy = -1 * tdy;
					if (random(1000) > 990) dx += random(3) - random(3), dy += random(3) - random(3);
					dst = bmd.getPixel(dx, dy);
					src = f.color;
					rd = (dst >> 16) & 0xFF;
					gd = (dst >>  8) & 0xFF;
					bd =  dst        & 0xFF;
					rs = (src >> 16) & 0xFF;
					gs = (src >>  8) & 0xFF;
					bs =  src        & 0xFF;
					bmd.setPixel(dx, dy, ((rd * 0.8125 + rs * 0.1875) << 16) | ((gd * 0.8125 + gs * 0.1875) << 8) | (bd * 0.8125 + bs * 0.1875));
				}
				for (j = 0; j < SLENGTH; j++) 
				{
					s = c.sands[j];
					dx = f.x + (c.x - f.x) * Math.sin(s.p);
					dy = f.y + (c.y - f.x) * Math.sin(s.p);
					dst = bmd.getPixel(dx, dy);
					src = s.c;
					rd = (dst >> 16) & 0xFF;
					gd = (dst >>  8) & 0xFF;
					bd =  dst        & 0xFF;
					rs = (src >> 16) & 0xFF;
					gs = (src >>  8) & 0xFF;
					bs =  src        & 0xFF;
					bmd.setPixel(dx, dy, ((rd * 0.890625 + rs * 0.109375) << 16) | ((gd * 0.890625 + gs * 0.109375) << 8) | (bd * 0.890625 + bs * 0.109375));
					s.g += random( -0.05, 0.05);
					if (s.g < -0.22) s.g = -0.22;
					if (s.g >  0.22) s.g =  0.22;
					s.p += random( -0.05, 0.05);
					if (s.p < 0) s.p = 0;
					if (s.p > 1) s.p = 1;
					ww = s.g * 0.1;
					for (k = 0; k < RLENGTH; k++) 
					{
						a = (0.1 - k * 0.009) * 0.00390625;
						dx = f.x + (c.x - f.x) * Math.sin(s.p + Math.sin(k * ww));
						dy = f.y + (c.y - f.y) * Math.sin(s.p + Math.sin(k * ww));
						dst = bmd.getPixel(dx, dy);
						rd = (dst >> 16) & 0xFF;
						gd = (dst >>  8) & 0xFF;
						bd =  dst        & 0xFF;
						bmd.setPixel(dx, dy, ((rd * (1 - a) + rs * a) << 16) | ((gd * (1-a) + gs * a) << 8) | (bd * (1 - a) + bs * a));
						
						dx = f.x + (c.x - f.x) * Math.sin(s.p - Math.sin(k * ww));
						dy = f.y + (c.y - f.y) * Math.sin(s.p - Math.sin(k * ww));
						dst = bmd.getPixel(dx, dy);
						rd = (dst >> 16) & 0xFF;
						gd = (dst >>  8) & 0xFF;
						bd =  dst        & 0xFF;
						bmd.setPixel(dx, dy, ((rd * (1 - a) + rs * a) << 16) | ((gd * (1-a) + gs * a) << 8) | (bd * (1 - a) + bs * a));
					}
				}
			}
			bmd.unlock();
			if (cnt++ > 5000) resetAll();
		}
		
		private function resetAll():void
		{
			var vt: Number, vvt: Number = 0.2, ot: Number = random(PI2);
			var t: int, tinc: Number, vx: Number, vy: Number, c: City;
			cnt = 0;
			if (w != stage.stageWidth || h != stage.stageHeight)
			{
				if (bmd) bmd.dispose();
				bmd = new BitmapData(w = stage.stageWidth, h = stage.stageHeight, false);
				bmp.bitmapData = bmd;
				bmp.smoothing = true;
				size = (w + h) / 2;
			}
			vt = size / 40;
			bmd.lock();
			bmd.fillRect(bmd.rect, 0xFFFFFF);
			bmd.unlock();
			for (t = 0; t < LENGTH; t++) 
			{
				tinc = ot + (3.1 - t / LENGTH) * 2 * t * PI2 / LENGTH;
				vx = vt * Math.sin(tinc), vy = vt * Math.cos(tinc);
				cities[t] = new City(w / 2 + vx * 2, h / 2 + vy * 2, vx, vy, t);
				vvt -= 0.00033;
				vt += vvt;
			}
			for (t = 0; t < LENGTH; t++) 
			{
				c = cities[t];
				c.friend = cities[(c.idx + int(random(LENGTH / 5))) % LENGTH];
			}
		}
		
	}

}

class City
{
	public var x: Number, y: Number, vx: Number, vy: Number, idx: int, color: uint;
	public var friend: City;
	public var sands: Vector.<SandPainter>;
	function City(x: Number, y: Number, vx: Number, vy: Number, idx: int)
	{
		this.x = x, this.y = y, this.vx = vx, this.vy = vy, this.idx = idx;
		color = goodcolor[int(random(goodcolor.length))];
		sands = new Vector.<SandPainter>(SLENGTH, true);
		for (var i:int = 0; i < SLENGTH; i++) sands[i] = new SandPainter();
	}
}

class SandPainter
{
	public var p: Number, c: uint, g: Number;
	function SandPainter() { p = random(1), c = goodcolor[int(random(goodcolor.length))], g = random(0.01, 0.1); }
}

const PI2: Number = 6.28318530717958647693;
const LENGTH: int = 100;
const SLENGTH: int = 3;
const RLENGTH: int = 11;
const goodcolor: Array = [
	0x3a242b, 0x3b2426, 0x352325, 0x836454, 0x7d5533, 0x8b7352, 0xb1a181, 0xa4632e, 0xbb6b33, 
	0xb47249, 0xca7239, 0xd29057, 0xe0b87e, 0xd9b166, 0xf5eabe, 0xfcfadf, 0xd9d1b0, 0xfcfadf, 
	0xd1d1ca, 0xa7b1ac, 0x879a8c, 0x9186ad, 0x776a8e, 0x000000, 0x000000, 0x000000, 0x000000, 
	0x000000, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0x000000, 0x000000, 0x000000, 
	0x000000, 0x000000, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF
];

function random(...args: Array): Number
{
	switch (args.length)
	{
		case 1:
			return Math.random() * args[0];
		break;
		case 2:
		default:
			var min: Number = args[0];
			return Math.random() * (args[1] - min) - min;
		break;
	}
	return Math.random();
}

Code Fullscreen

Preview Fullscreen