forked from: forked from: Mosaic
/**
* Copyright heroboy ( http://wonderfl.net/user/heroboy )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/68md
*/
// forked from abakane's forked from: Mosaic
// forked from Saqoosha's Mosaic
package {
import Box2D.Collision.Shapes.b2CircleDef;
import Box2D.Collision.Shapes.b2PolygonDef;
import Box2D.Collision.b2AABB;
import Box2D.Common.Math.b2Vec2;
import Box2D.Dynamics.b2Body;
import Box2D.Dynamics.b2BodyDef;
import Box2D.Dynamics.b2DebugDraw;
import Box2D.Dynamics.b2World;
import com.bit101.components.Label;
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.display.DisplayObject;
import flash.display.Loader;
import flash.display.LoaderInfo;
import flash.display.Sprite;
import flash.display.StageQuality;
import flash.display.StageScaleMode;
import flash.events.Event;
import flash.events.MouseEvent;
import flash.net.URLRequest;
import flash.system.LoaderContext;
import flash.geom.Matrix;
[SWF(backgroundColor="0x0", frameRate="60", width="465", height="465")]
public class Mosaic extends Sprite {
private static const NUM_CIRCLES:int = 400;
private static const DEBUG_DRAW:Boolean = false;
private static const TO_PHYSICS_SCALE:Number = 1.0 / 30.0;
private static const TO_DRAW_SCALE:Number = 1 / TO_PHYSICS_SCALE;
private static const ITERATIONS:int = 5;
private static const TIME_STEP:Number = 1.0 / 30.0;
private static const STEP1_SIMULATE:int = 0;
private static const STEP2_WAIT_FOR_SLEEP:int = 1;
private static const STEP3_RECONSTRUCTION:int = 2;
private static const SCALE_DOWN:int = 8;
private var _label:Label;
private var _refImage:BitmapData;
private var _refImage2:BitmapData;
private var _world:b2World;
private var _objects:Array = [];
private var _frameCount:int = 0;
private var _maxFrames:int;
private var _step:int = STEP1_SIMULATE;
private var _enterFrameHandler:Function;
public function Mosaic(){
stage.scaleMode = StageScaleMode.NO_SCALE;
stage.quality = StageQuality.BEST;
_label = new Label(this, 10, 5, 'LOADING.....PLEASE BE PATIENT.....');
var loader:Loader = new Loader();
loader.contentLoaderInfo.addEventListener(Event.COMPLETE, _onLoadComplete);
loader.load(new URLRequest('http://bkmrk.abakane.com/lab/lib/monalisa_265.jpg'), new LoaderContext(true));
}
private function _onLoadComplete(event:Event):void {
_label.text = "load ok";
var loader:Loader = LoaderInfo(event.target).loader;
_refImage = Bitmap(loader.content).bitmapData;
_refImage2 = new BitmapData(_refImage.width/SCALE_DOWN,_refImage.height/SCALE_DOWN,false,0);
var mat:Matrix = new Matrix();
mat.scale(1/SCALE_DOWN,1/SCALE_DOWN);
_refImage2.draw(_refImage,mat);
var worldAABB:b2AABB = new b2AABB();
worldAABB.lowerBound.Set(-1000.0, -1000.0);
worldAABB.upperBound.Set(1000.0, 1000.0);
_world = new b2World(worldAABB, new b2Vec2(0.0, 10.0), true);
_world.SetWarmStarting(true);
_buildStaticBox(100, 465*0.5, 10, 1000);
_buildStaticBox(365, 465*0.5, 10, 1000);
_buildStaticBox(465*0.5, 365, 1000, 10);
if (DEBUG_DRAW) {
var dbgDraw:b2DebugDraw = new b2DebugDraw();
dbgDraw.m_sprite = this;
dbgDraw.m_drawScale = 30.0;
dbgDraw.m_fillAlpha = 0.0;
dbgDraw.m_lineThickness = 1.0;
dbgDraw.m_drawFlags = 0xFFFFFFFF;
_world.SetDebugDraw(dbgDraw);
}
_enterFrameHandler = _step1;
addEventListener(Event.ENTER_FRAME, _onEnterFrame, false, 0, true);
}
private function _buildStaticBox(centerX:Number, centerY:Number, width:Number, height:Number):b2Body
{
var bodyDef:b2BodyDef = new b2BodyDef();
bodyDef.position.Set(centerX * TO_PHYSICS_SCALE, centerY * TO_PHYSICS_SCALE);
var boxDef:b2PolygonDef = new b2PolygonDef();
boxDef.SetAsBox(width * TO_PHYSICS_SCALE / 2, height * TO_PHYSICS_SCALE / 2);
boxDef.friction = 0.3;
boxDef.density = 0;
var body:b2Body = _world.CreateBody(bodyDef);
body.CreateShape(boxDef);
body.SetMassFromShapes();
return body;
}
private function _buildDynamicCircle(centerX:Number, centerY:Number, radius:Number, graphic:DisplayObject = null):b2Body
{
var bodyDef:b2BodyDef = new b2BodyDef();
bodyDef.position.Set(centerX * TO_PHYSICS_SCALE, centerY * TO_PHYSICS_SCALE);
var circleDef:b2CircleDef = new b2CircleDef();
circleDef.radius = radius * TO_PHYSICS_SCALE;
circleDef.density = 1.0;
circleDef.friction = 0.5;
circleDef.restitution = 0.3;
var body:b2Body = _world.CreateBody(bodyDef);
body.CreateShape(circleDef);
body.SetMassFromShapes();
return body;
}
private function _onEnterFrame(event:Event):void {
if (_enterFrameHandler is Function) {
_enterFrameHandler();
}
}
private function _step1():void {
if (_frameCount % 2 == 0) {
var px:Number = 465*0.5;
var py:Number = -20;
var r:Number = Math.random()*Math.random()*7 + 6;
var b:b2Body = _buildDynamicCircle(px, py, r);
var v:Number = (Math.random() - 0.5)*5;
b.ApplyImpulse(new b2Vec2(v, 0), new b2Vec2());
var sp:Recorder = new Recorder();
sp.frameOffset = _frameCount;
b.SetUserData(sp);
_objects.push({
px: px,
py: py,
r: r,
v: v,
b: b,
sp: sp
});
addChild(sp);
if (_objects.length == NUM_CIRCLES) {
_step = STEP2_WAIT_FOR_SLEEP;
_enterFrameHandler = _step2;
_maxFrames = _frameCount;
_frameCount = 0;
}
}
_step2();
}
private function _step2():void {
_world.Step(TIME_STEP, ITERATIONS);
if (DEBUG_DRAW && _frameCount % 30 == 0) {
_world.DrawDebugData();
}
for (var bb:b2Body = _world.GetBodyList(); bb; bb = bb.GetNext()){
var rec:Recorder = bb.GetUserData() as Recorder;
if (rec) {
var pos:b2Vec2 = bb.GetPosition();
rec.save(pos.x * TO_DRAW_SCALE, pos.y * TO_DRAW_SCALE);
}
}
_frameCount++;
if (_step == Mosaic.STEP2_WAIT_FOR_SLEEP && _frameCount > 300) {
_enterFrameHandler = null;
_step = STEP3_RECONSTRUCTION;
graphics.clear();
var n:int = _objects.length;
for (var i:int = 0; i < n; ++i) {
var info:Object = _objects[i];
var b:b2Body = info.b;
var p:b2Vec2 = b.GetPosition();
var dx:Number = p.x * TO_DRAW_SCALE;
var dy:Number = p.y * TO_DRAW_SCALE;
var c:uint = _refImage.getPixel(dx/465*_refImage.width, dy/465*_refImage.height);
var sp:Recorder = info.sp;
sp.draw(c, info.r);
_objects[i] = sp;
}
_maxFrames += _frameCount;
_frameCount = 0;
_label.text = 'CLICK TO START';
stage.addEventListener(MouseEvent.CLICK, _onClickStage);
_onClickStage();//
}
else
{
for (i=0;i<_objects.length;++i)
{
info = _objects[i];
b = info.b;
sp = info.sp;
p = b.GetPosition();
dx = sp.x;
dy = sp.y;
var xx:Number = dx/465 * _refImage2.width;
var yy:Number = dy/465 * _refImage2.height;
if (xx >= _refImage2.width) xx = _refImage2.width-1;
if (yy >= _refImage2.height) yy = _refImage2.height-1;
c = _refImage2.getPixel(xx,yy);
sp.draw(c,info.r);
}
}
}
private function _step3():void {
var n:int = _objects.length;
for (var i:int = 0; i < n; ++i) {
var sp:Recorder = _objects[i];
if (sp.frameOffset <= _frameCount) {
if (!sp.parent) {
addChild(sp);
}
sp.restore(_frameCount - sp.frameOffset);
}
}
_frameCount++;
}
private function _onClickStage(event:MouseEvent=null):void {
var n:int = numChildren;
while (n--) {
removeChildAt(n);
}
_frameCount = 0;
_enterFrameHandler = _step3;
}
}
}
import flash.display.Sprite;
class Recorder extends Sprite {
public var frameOffset:int = 0;
private var _px:Vector.<Number>;
private var _py:Vector.<Number>;
public function Recorder() {
_px = new Vector.<Number>();
_py = new Vector.<Number>();
}
public function save(rx:Number = NaN, ry:Number = NaN):void {
if (isNaN(rx)) {
_px.push(x);
_py.push(y);
} else {
_px.push(rx);
_py.push(ry);
this.x = rx;
this.y = ry;
}
}
public function restore(frame:int):void {
if (frame < _px.length) {
x = _px[frame];
y = _py[frame];
}
}
public function draw(color:uint, radius:Number):void {
graphics.clear();
graphics.beginFill(color);
graphics.drawCircle(0, 0, radius);
graphics.endFill();
}
}