Brownian Motion
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This example simulates Brownian Motion. It demonstrates Flint’s built-in collision handling between particles.
The example also includes a custom action created to show and hide the air particles.
package
{
import org.flintparticles.threeD.emitters.Emitter3D;
import org.flintparticles.threeD.geom.Point3D;
import org.flintparticles.threeD.renderers.DisplayObjectRenderer;
import org.flintparticles.threeD.renderers.controllers.OrbitCamera;
import flash.display.Sprite;
import flash.text.TextField;
[SWF(width='400', height='400', frameRate='61', backgroundColor='#000000')]
public class Main extends Sprite
{
private var emitter:Emitter3D;
private var orbitter:OrbitCamera;
public function Main()
{
var txt:TextField = new TextField();
txt.text = "Hold down the shift key to hide the air particles.";
txt.autoSize = "left";
txt.textColor = 0xFFFFFF;
addChild( txt );
emitter = new BrownianMotion( stage );
var renderer:DisplayObjectRenderer = new DisplayObjectRenderer();
renderer.x = 200;
renderer.y = 200;
renderer.addEmitter( emitter );
addChild( renderer );
renderer.camera.position = new Point3D( 0, 0, -400 );
renderer.camera.target = new Point3D( 0, 0, 0 );
renderer.camera.projectionDistance = 400;
orbitter = new OrbitCamera( stage, renderer.camera );
orbitter.start();
emitter.start();
}
}
}package
{
import org.flintparticles.common.counters.Blast;
import org.flintparticles.common.displayObjects.Dot;
import org.flintparticles.common.initializers.ChooseInitializer;
import org.flintparticles.common.initializers.CollisionRadiusInit;
import org.flintparticles.common.initializers.ColorInit;
import org.flintparticles.common.initializers.ImageClass;
import org.flintparticles.common.initializers.InitializerGroup;
import org.flintparticles.common.initializers.MassInit;
import org.flintparticles.threeD.actions.BoundingBox;
import org.flintparticles.threeD.actions.Collide;
import org.flintparticles.threeD.actions.Move;
import org.flintparticles.threeD.emitters.Emitter3D;
import org.flintparticles.threeD.geom.Point3D;
import org.flintparticles.threeD.geom.Vector3D;
import org.flintparticles.threeD.initializers.Position;
import org.flintparticles.threeD.initializers.Velocity;
import org.flintparticles.threeD.zones.BoxZone;
import org.flintparticles.threeD.zones.SphereZone;
import flash.display.DisplayObject;
public class BrownianMotion extends Emitter3D
{
public function BrownianMotion( stage:DisplayObject )
{
counter = new Blast( 250 );
var air:InitializerGroup = new InitializerGroup();
air.addInitializer( new ImageClass( Dot, 2 ) );
air.addInitializer( new ColorInit( 0xFF666666, 0xFF666666 ) );
air.addInitializer( new MassInit( 1 ) );
air.addInitializer( new CollisionRadiusInit( 2 ) );
var smoke:InitializerGroup = new InitializerGroup();
smoke.addInitializer( new ImageClass( Dot, 10 ) );
smoke.addInitializer( new ColorInit( 0xFFFFFFFF, 0xFFFFFFFF ) );
smoke.addInitializer( new MassInit( 5 ) );
smoke.addInitializer( new CollisionRadiusInit( 10 ) );
addInitializer( new Position( new BoxZone( 280, 280, 280, new Point3D( 0, 0, 0 ), new Vector3D( 0, 1, 0 ), new Vector3D( 0, 0, 1 ) ) ) );
addInitializer( new Velocity( new SphereZone( new Point3D( 0, 0, 0 ), 150, 100 ) ) );
addInitializer( new ChooseInitializer( [ air, smoke ], [ 19, 1 ] ) );
addAction( new Move() );
addAction( new Collide( 1 ) );
addAction( new BoundingBox( -150, 150, -150, 150, -150, 150, 1 ) );
addAction( new ShowAirAction( stage ) );
}
}
}package
{
import org.flintparticles.common.actions.ActionBase;
import org.flintparticles.common.emitters.Emitter;
import org.flintparticles.common.particles.Particle;
import flash.display.DisplayObject;
import flash.events.KeyboardEvent;
import flash.ui.Keyboard;
public class ShowAirAction extends ActionBase
{
private var _isDown:Boolean;
public function ShowAirAction( stage:DisplayObject )
{
_isDown = false;
stage.addEventListener( KeyboardEvent.KEY_DOWN, keyDownListener, false, 0, true );
stage.addEventListener( KeyboardEvent.KEY_UP, keyUpListener, false, 0, true );
}
private function keyDownListener( ev:KeyboardEvent ):void
{
if( ev.keyCode == Keyboard.SHIFT )
{
_isDown = true;
}
}
private function keyUpListener( ev:KeyboardEvent ):void
{
if( ev.keyCode == Keyboard.SHIFT )
{
_isDown = false;
}
}
override public function update( emitter:Emitter, particle:Particle, time:Number ):void
{
if( particle.mass == 1 )
{
if( _isDown )
{
particle.color = 0;
}
else
{
particle.color = 0xFF666666;
}
}
}
}
}import org.flintparticles.common.counters.*; import org.flintparticles.common.displayObjects.Dot; import org.flintparticles.common.initializers.*; import org.flintparticles.threeD.actions.*; import org.flintparticles.threeD.emitters.Emitter3D; import org.flintparticles.threeD.geom.Point3D; import org.flintparticles.threeD.geom.Vector3D; import org.flintparticles.threeD.initializers.*; import org.flintparticles.threeD.renderers.*; import org.flintparticles.threeD.renderers.controllers.OrbitCamera; import org.flintparticles.threeD.zones.*; var txt:TextField = new TextField(); txt.text = "Hold down the shift key to hide the air particles."; txt.autoSize = "left"; txt.textColor = 0xFFFFFF; addChild( txt ); var emitter:Emitter3D = new Emitter3D(); emitter.counter = new Blast( 250 ); var air:InitializerGroup = new InitializerGroup(); air.addInitializer( new ImageClass( Dot, 2 ) ); air.addInitializer( new ColorInit( 0xFF666666, 0xFF666666 ) ); air.addInitializer( new MassInit( 1 ) ); air.addInitializer( new CollisionRadiusInit( 2 ) ); var smoke:InitializerGroup = new InitializerGroup(); smoke.addInitializer( new ImageClass( Dot, 10 ) ); smoke.addInitializer( new ColorInit( 0xFFFFFFFF, 0xFFFFFFFF ) ); smoke.addInitializer( new MassInit( 5 ) ); smoke.addInitializer( new CollisionRadiusInit( 10 ) ); emitter.addInitializer( new Position( new BoxZone( 280, 280, 280, new Point3D( 0, 0, 0 ), new Vector3D( 0, 1, 0 ), new Vector3D( 0, 0, 1 ) ) ) ); emitter.addInitializer( new Velocity( new SphereZone( new Point3D( 0, 0, 0 ), 150, 100 ) ) ); emitter.addInitializer( new ChooseInitializer( [ air, smoke ], [ 19, 1 ] ) ); emitter.addAction( new Move() ); emitter.addAction( new Collide( 1 ) ); emitter.addAction( new BoundingBox( -150, 150, -150, 150, -150, 150, 1 ) ); emitter.addAction( new ShowAirAction( stage ) ); var renderer:DisplayObjectRenderer = new DisplayObjectRenderer(); renderer.x = 200; renderer.y = 200; renderer.addEmitter( emitter ); addChild( renderer ); renderer.camera.position = new Point3D( 0, 0, -400 ); renderer.camera.target = new Point3D( 0, 0, 0 ); renderer.camera.projectionDistance = 400; var orbitter:OrbitCamera = new OrbitCamera( stage, renderer.camera ); orbitter.start(); emitter.start();
package
{
import org.flintparticles.common.actions.ActionBase;
import org.flintparticles.common.emitters.Emitter;
import org.flintparticles.common.particles.Particle;
import flash.display.DisplayObject;
import flash.events.KeyboardEvent;
import flash.ui.Keyboard;
public class ShowAirAction extends ActionBase
{
private var _isDown:Boolean;
public function ShowAirAction( stage:DisplayObject )
{
_isDown = false;
stage.addEventListener( KeyboardEvent.KEY_DOWN, keyDownListener, false, 0, true );
stage.addEventListener( KeyboardEvent.KEY_UP, keyUpListener, false, 0, true );
}
private function keyDownListener( ev:KeyboardEvent ):void
{
if( ev.keyCode == Keyboard.SHIFT )
{
_isDown = true;
}
}
private function keyUpListener( ev:KeyboardEvent ):void
{
if( ev.keyCode == Keyboard.SHIFT )
{
_isDown = false;
}
}
override public function update( emitter:Emitter, particle:Particle, time:Number ):void
{
if( particle.mass == 1 )
{
if( _isDown )
{
particle.color = 0;
}
else
{
particle.color = 0xFF666666;
}
}
}
}
}<?xml version="1.0" encoding="utf-8"?>
<mx:Application
xmlns:mx="http://www.adobe.com/2006/mxml"
xmlns:f="http://flintparticles.org/2009/flint3d"
xmlns:local="*"
layout="absolute" width="500" height="500"
backgroundColor="#000000">
<mx:Script>
<![CDATA[
import org.flintparticles.common.displayObjects.Dot;
]]>
</mx:Script>
<mx:Label text="Hold down the shift key to hide the air particles." color="0xFFFFFF"/>
<f:DisplayObjectRenderer id="renderer" width="500" height="500">
<f:camera>
<f:Camera projectionDistance="400">
<f:position>
<f:Point3D x="0" y="0" z="-400"/>
</f:position>
</f:Camera>
</f:camera>
<f:emitters>
<f:Emitter id="emitter" autoStart="true">
<f:counter>
<f:Blast startCount="250"/>
</f:counter>
<f:initializers>
<f:Position>
<f:BoxZone width="280" height="280" depth="280"/>
</f:Position>
<f:Velocity>
<f:SphereZone innerRadius="100" outerRadius="150"/>
</f:Velocity>
<f:ChooseInitializer weights="1,19">
<f:InitializerGroup>
<f:ImageClass imageClass="{Dot}" parameters="10"/>
<f:CollisionRadiusInit radius="10"/>
<f:MassInit mass="5"/>
<f:ColorInit minColor="0xFFFFFFFF" maxColor="0xFFFFFFFF"/>
</f:InitializerGroup>
<f:InitializerGroup>
<f:ImageClass imageClass="{Dot}" parameters="2"/>
<f:CollisionRadiusInit radius="2"/>
<f:MassInit mass="1"/>
<f:ColorInit minColor="0xFF666666" maxColor="0xFF666666"/>
</f:InitializerGroup>
</f:ChooseInitializer>
</f:initializers>
<f:actions>
<f:Move/>
<f:Collide bounce="1"/>
<f:BoundingBox minX="-150" maxX="150" minY="-150" maxY="150" minZ="-150" maxZ="150"/>
<local:ShowAirAction/>
</f:actions>
</f:Emitter>
</f:emitters>
</f:DisplayObjectRenderer>
</mx:Application>package
{
import flash.display.DisplayObject;
import flash.events.Event;
import flash.events.KeyboardEvent;
import flash.ui.Keyboard;
import mx.core.IMXMLObject;
import org.flintparticles.common.actions.ActionBase;
import org.flintparticles.common.emitters.Emitter;
import org.flintparticles.common.particles.Particle;
public class ShowAirAction extends ActionBase implements IMXMLObject
{
private var _isDown:Boolean;
public function ShowAirAction()
{
_isDown = false;
}
public function initialized( document:Object, id:String ):void
{
if( document.stage )
{
setStage( document.stage );
}
else
{
DisplayObject( document ).addEventListener( Event.ADDED_TO_STAGE, addedToStage );
}
}
private function addedToStage( ev:Event ):void
{
setStage( ev.target.stage );
}
private function setStage( stage:DisplayObject ):void
{
stage.addEventListener( KeyboardEvent.KEY_DOWN, keyDownListener, false, 0, true );
stage.addEventListener( KeyboardEvent.KEY_UP, keyUpListener, false, 0, true );
}
private function keyDownListener( ev:KeyboardEvent ):void
{
if( ev.keyCode == Keyboard.SHIFT )
{
_isDown = true;
}
}
private function keyUpListener( ev:KeyboardEvent ):void
{
if( ev.keyCode == Keyboard.SHIFT )
{
_isDown = false;
}
}
override public function update( emitter:Emitter, particle:Particle, time:Number ):void
{
if( particle.mass == 1 )
{
if( _isDown )
{
particle.color = 0;
}
else
{
particle.color = 0xFF666666;
}
}
}
}
}package
{
import away3d.containers.View3D;
import org.flintparticles.threeD.away3d.Away3DRenderer;
import org.flintparticles.threeD.emitters.Emitter3D;
import flash.display.Sprite;
import flash.events.Event;
[SWF(width='400', height='400', frameRate='61', backgroundColor='#000000')]
public class Main extends Sprite
{
private var emitter:Emitter3D;
private var view:View3D;
private var renderer:Away3DRenderer;
public function Main()
{
emitter = new BrownianMotion( stage );
view = new View3D({x:200,y:200});
addChild(view);
renderer = new Away3DRenderer( view.scene );
renderer.addEmitter( emitter );
emitter.start();
addEventListener( Event.ENTER_FRAME, render, false, 0, true );
}
private function render( ev:Event ):void
{
// render the view
view.render();
}
}
}package
{
import org.flintparticles.common.counters.Blast;
import org.flintparticles.common.displayObjects.Dot;
import org.flintparticles.common.initializers.ChooseInitializer;
import org.flintparticles.common.initializers.CollisionRadiusInit;
import org.flintparticles.common.initializers.ColorInit;
import org.flintparticles.common.initializers.InitializerGroup;
import org.flintparticles.common.initializers.MassInit;
import org.flintparticles.threeD.actions.BoundingBox;
import org.flintparticles.threeD.actions.Collide;
import org.flintparticles.threeD.actions.Move;
import org.flintparticles.threeD.away3d.initializers.A3DDisplayObjectClass;
import org.flintparticles.threeD.emitters.Emitter3D;
import org.flintparticles.threeD.geom.Point3D;
import org.flintparticles.threeD.geom.Vector3D;
import org.flintparticles.threeD.initializers.Position;
import org.flintparticles.threeD.initializers.Velocity;
import org.flintparticles.threeD.zones.BoxZone;
import org.flintparticles.threeD.zones.SphereZone;
import flash.display.DisplayObject;
public class BrownianMotion extends Emitter3D
{
public function BrownianMotion( stage:DisplayObject )
{
counter = new Blast( 250 );
var air:InitializerGroup = new InitializerGroup();
air.addInitializer( new A3DDisplayObjectClass( Dot, 2 ) );
air.addInitializer( new ColorInit( 0xFF666666, 0xFF666666 ) );
air.addInitializer( new MassInit( 1 ) );
air.addInitializer( new CollisionRadiusInit( 2 ) );
var smoke:InitializerGroup = new InitializerGroup();
smoke.addInitializer( new A3DDisplayObjectClass( Dot, 10 ) );
smoke.addInitializer( new ColorInit( 0xFFFFFFFF, 0xFFFFFFFF ) );
smoke.addInitializer( new MassInit( 5 ) );
smoke.addInitializer( new CollisionRadiusInit( 10 ) );
addInitializer( new Position( new BoxZone( 280, 280, 280, new Point3D( 0, 0, 0 ), new Vector3D( 0, 1, 0 ), new Vector3D( 0, 0, 1 ) ) ) );
addInitializer( new Velocity( new SphereZone( new Point3D( 0, 0, 0 ), 150, 100 ) ) );
addInitializer( new ChooseInitializer( [ air, smoke ], [ 19, 1 ] ) );
addAction( new Move() );
addAction( new Collide( 1 ) );
addAction( new BoundingBox( -150, 150, -150, 150, -150, 150, 1 ) );
addAction( new ShowAirAction( stage ) );
}
}
}package
{
import org.flintparticles.common.actions.ActionBase;
import org.flintparticles.common.emitters.Emitter;
import org.flintparticles.common.particles.Particle;
import flash.display.DisplayObject;
import flash.events.KeyboardEvent;
import flash.ui.Keyboard;
public class ShowAirAction extends ActionBase
{
private var _isDown:Boolean;
public function ShowAirAction( stage:DisplayObject )
{
_isDown = false;
stage.addEventListener( KeyboardEvent.KEY_DOWN, keyDownListener, false, 0, true );
stage.addEventListener( KeyboardEvent.KEY_UP, keyUpListener, false, 0, true );
}
private function keyDownListener( ev:KeyboardEvent ):void
{
if( ev.keyCode == Keyboard.SHIFT )
{
_isDown = true;
}
}
private function keyUpListener( ev:KeyboardEvent ):void
{
if( ev.keyCode == Keyboard.SHIFT )
{
_isDown = false;
}
}
override public function update( emitter:Emitter, particle:Particle, time:Number ):void
{
if( particle.mass == 1 )
{
if( _isDown )
{
particle.color = 0;
}
else
{
particle.color = 0xFF666666;
}
}
}
}
}package
{
import org.flintparticles.threeD.emitters.Emitter3D;
import org.flintparticles.threeD.papervision3d.PV3DParticleRenderer;
import org.papervision3d.cameras.Camera3D;
import org.papervision3d.core.geom.Particles;
import org.papervision3d.render.BasicRenderEngine;
import org.papervision3d.scenes.Scene3D;
import org.papervision3d.view.Viewport3D;
import flash.display.Sprite;
import flash.events.Event;
[SWF(width='400', height='400', frameRate='61', backgroundColor='#000000')]
public class Main extends Sprite
{
private var viewport:Viewport3D;
private var emitter:Emitter3D;
private var pv3dRenderer:BasicRenderEngine;
private var flintRenderer:PV3DParticleRenderer;
private var scene:Scene3D;
private var camera:Camera3D;
public function Main()
{
viewport = new Viewport3D( 400, 400 );
addChild( viewport );
pv3dRenderer = new BasicRenderEngine();
scene = new Scene3D();
camera = new Camera3D();
camera.z = -400;
var particles:Particles = new Particles();
scene.addChild( particles );
emitter = new BrownianMotion( stage );
flintRenderer = new PV3DParticleRenderer( particles );
flintRenderer.addEmitter( emitter );
emitter.start();
addEventListener( Event.ENTER_FRAME, render );
}
private function render( ev:Event ):void
{
// render the view
pv3dRenderer.renderScene( scene, camera, viewport);
}
}
}package
{
import org.flintparticles.common.counters.Blast;
import org.flintparticles.common.initializers.ChooseInitializer;
import org.flintparticles.common.initializers.CollisionRadiusInit;
import org.flintparticles.common.initializers.ColorInit;
import org.flintparticles.common.initializers.InitializerGroup;
import org.flintparticles.common.initializers.MassInit;
import org.flintparticles.threeD.actions.BoundingBox;
import org.flintparticles.threeD.actions.Collide;
import org.flintparticles.threeD.actions.Move;
import org.flintparticles.threeD.emitters.Emitter3D;
import org.flintparticles.threeD.geom.Point3D;
import org.flintparticles.threeD.geom.Vector3D;
import org.flintparticles.threeD.initializers.Position;
import org.flintparticles.threeD.initializers.Velocity;
import org.flintparticles.threeD.papervision3d.initializers.ApplyMaterial;
import org.flintparticles.threeD.papervision3d.initializers.PV3DObjectClass;
import org.flintparticles.threeD.zones.BoxZone;
import org.flintparticles.threeD.zones.SphereZone;
import org.papervision3d.core.geom.renderables.Particle;
import org.papervision3d.materials.special.ParticleMaterial;
import flash.display.DisplayObject;
public class BrownianMotion extends Emitter3D
{
public function BrownianMotion( stage:DisplayObject )
{
counter = new Blast( 250 );
var air:InitializerGroup = new InitializerGroup();
air.addInitializer( new PV3DObjectClass( Particle, null, 4 ) );
air.addInitializer( new ColorInit( 0xFF666666, 0xFF666666 ) );
air.addInitializer( new MassInit( 1 ) );
air.addInitializer( new CollisionRadiusInit( 2 ) );
air.addInitializer( new ApplyMaterial( ParticleMaterial, 0x666666, 1, ParticleMaterial.SHAPE_CIRCLE ) );
var smoke:InitializerGroup = new InitializerGroup();
smoke.addInitializer( new PV3DObjectClass( Particle, null, 20 ) );
smoke.addInitializer( new ColorInit( 0xFFFFFFFF, 0xFFFFFFFF ) );
smoke.addInitializer( new MassInit( 5 ) );
smoke.addInitializer( new CollisionRadiusInit( 10 ) );
smoke.addInitializer( new ApplyMaterial( ParticleMaterial, 0xFFFFFF, 1, ParticleMaterial.SHAPE_CIRCLE ) );
addInitializer( new Position( new BoxZone( 280, 280, 280, new Point3D( 0, 0, 0 ), new Vector3D( 0, 1, 0 ), new Vector3D( 0, 0, 1 ) ) ) );
addInitializer( new Velocity( new SphereZone( new Point3D( 0, 0, 0 ), 150, 100 ) ) );
addInitializer( new ChooseInitializer( [ air, smoke ], [ 19, 1 ] ) );
addAction( new Move() );
addAction( new Collide( 1 ) );
addAction( new BoundingBox( -150, 150, -150, 150, -150, 150, 1 ) );
addAction( new ShowAirAction( stage ) );
}
}
}package
{
import org.flintparticles.common.actions.ActionBase;
import org.flintparticles.common.emitters.Emitter;
import org.flintparticles.common.particles.Particle;
import flash.display.DisplayObject;
import flash.events.KeyboardEvent;
import flash.ui.Keyboard;
public class ShowAirAction extends ActionBase
{
private var _isDown:Boolean;
public function ShowAirAction( stage:DisplayObject )
{
_isDown = false;
stage.addEventListener( KeyboardEvent.KEY_DOWN, keyDownListener, false, 0, true );
stage.addEventListener( KeyboardEvent.KEY_UP, keyUpListener, false, 0, true );
}
private function keyDownListener( ev:KeyboardEvent ):void
{
if( ev.keyCode == Keyboard.SHIFT )
{
_isDown = true;
}
}
private function keyUpListener( ev:KeyboardEvent ):void
{
if( ev.keyCode == Keyboard.SHIFT )
{
_isDown = false;
}
}
override public function update( emitter:Emitter, particle:Particle, time:Number ):void
{
if( particle.mass == 1 )
{
if( _isDown )
{
particle.color = 0;
}
else
{
particle.color = 0xFF666666;
}
}
}
}
}
