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1. • CommentAuthorLanceMango
   • CommentTimeMay 19th 2011

    
   Hello,
   i have a growing gras animation. 3 buttons: start the animation, pause the animation and one for cleanig up the stage.
   Start and Pause are working without problems, but i'm desperating with the cleaning button. i tried many many ways, nothing worked.
   please, can anyone help?
   here ist the code:
   
   <?xml version="1.0" encoding="utf-8"?>
   <s:Application
   xmlns:fx="http://ns.adobe.com/mxml/2009"
   xmlns:s="library://ns.adobe.com/flex/spark"
   xmlns:f="http://flintparticles.org/2009/flint2d"
   width="500" height="500"
   backgroundColor="#000000">
   
   <fx:Script>
   <![CDATA[
   import mx.core.mx_internal;
   
   import org.flintparticles.common.events.EmitterEvent;
   import org.flintparticles.common.events.ParticleEvent;
   import org.flintparticles.common.particles.Particle;
   import org.flintparticles.twoD.particles.Particle2D;
   import org.flintparticles.twoD.particles.Particle2DUtils;
   import org.flintparticles.twoD.particles.ParticleCreator2D;
   
   protected function start(event:MouseEvent):void
   {
   emitter.start();
   
   }
   
   protected function pause(event:MouseEvent):void
   {
   emitter.pause();
   }
   
   protected function reset(event:MouseEvent):void
   {
   // emitter.killAllParticles();
   // emitter.removeParticles( emitter.particles ) ;
   
   }
   
   ]]>
   </fx:Script>
   <s:Rect width="500" height="500" x="0" y="0">
   <s:fill>
   <s:BitmapFill source="@Embed('bilder/bg.png')"/>
   
   </s:fill>
   </s:Rect>
   
   <f:BitmapLineRenderer width="500" height="500">
   <f:emitters>
   <f:Emitter id="emitter" autoStart="false" x="250" y="400" runAheadTime="0" >
   <f:counter>
   <f:Blast startCount="100"/>
   </f:counter>
   <f:initializers >
   <f:Position>
   <f:DiscZone centerX="0" centerY="0" outerRadius="100"/>
   </f:Position>
   <f:Velocity>
   <f:DiscSectorZone centerX="0" centerY="0" outerRadius="80" innerRadius="40" minAngle="{-5 * Math.PI / 8}" maxAngle="{-3 * Math.PI / 8}"/>
   </f:Velocity>
   <f:ColorInit minColor="0xFF718f3a" maxColor="0xFF8dac35"/>
   <f:Lifetime lifetime="7"/>
   </f:initializers>
   <f:actions>
   
   <f:Move/>
   <f:Age/>
   <f:Accelerate x="0" y="10"/>
   <f:ScaleImage startScale="1" endScale="1"/>
   
   </f:actions>
   </f:Emitter>
   </f:emitters>
   </f:BitmapLineRenderer>
   
   <s:Group x="100" y="470">
   
   <s:Button x="0" label="start" click="start(event)"/>
   <s:Button x="120" label="stop!" click="pause(event)"/>
   <s:Button x="220" id="cut" label="clean stage" click="reset(event)"/>
   
   </s:Group>
   
   </s:Application>
2. • CommentAuthorRichard
   • CommentTimeMay 23rd 2011 edited

    
   Hmm. Don't know how I missed the need to clear the content of the renderer. Until I add such a method, you'll have to clear the renderer by hand...
   
   protected function reset(event:MouseEvent):void
{
emitter.killAllParticles();
renderer.bitmapData.fillRect( emitter.bitmapData.rect, 0 );
}

...

<f:BitmapLineRenderer id="renderer" width="500" height="500">