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	<title>Comments on: Rolling a Sphere with Keyboard and Box2DFlash Physics</title>
	<atom:link href="http://pv3d.org/2009/01/15/rolling-a-sphere-with-keyboard-and-box2dflash-physics/feed/" rel="self" type="application/rss+xml" />
	<link>http://pv3d.org/2009/01/15/rolling-a-sphere-with-keyboard-and-box2dflash-physics/</link>
	<description>Papervision3D, ActionScript, and Flex examples and tutorials by John Lindquist</description>
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		<title>By: Rolling a Sphere with Keyboard and Box2DFlash Physics pv3d org &#124; Outdoor Ceiling Fans</title>
		<link>http://pv3d.org/2009/01/15/rolling-a-sphere-with-keyboard-and-box2dflash-physics/comment-page-1/#comment-2118</link>
		<dc:creator>Rolling a Sphere with Keyboard and Box2DFlash Physics pv3d org &#124; Outdoor Ceiling Fans</dc:creator>
		<pubDate>Sun, 31 May 2009 06:56:06 +0000</pubDate>
		<guid isPermaLink="false">http://pv3d.org/?p=325#comment-2118</guid>
		<description>[...] Rolling a Sphere with Keyboard and Box2DFlash Physics pv3d org   Posted by root 24 minutes ago (http://pv3d.org)        Jan 15 2009 up isup false break case keyboard left isleft false break case keyboard var ceilingbodydef b2bodydef new b2bodydef var ceiling b2body top and bottom shape definition leave a comment name required pv3d org is powered by wordpress wordpress them        Discuss&#160;  &#124;&#160; Bury &#124;&#160;    News &#124; Rolling a Sphere with Keyboard and Box2DFlash Physics pv3d org [...]</description>
		<content:encoded><![CDATA[<p>[...] Rolling a Sphere with Keyboard and Box2DFlash Physics pv3d org   Posted by root 24 minutes ago (<a href="http://pv3d.org" rel="nofollow">http://pv3d.org</a>)        Jan 15 2009 up isup false break case keyboard left isleft false break case keyboard var ceilingbodydef b2bodydef new b2bodydef var ceiling b2body top and bottom shape definition leave a comment name required pv3d org is powered by wordpress wordpress them        Discuss&nbsp;  |&nbsp; Bury |&nbsp;    News | Rolling a Sphere with Keyboard and Box2DFlash Physics pv3d org [...]</p>
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	<item>
		<title>By: J</title>
		<link>http://pv3d.org/2009/01/15/rolling-a-sphere-with-keyboard-and-box2dflash-physics/comment-page-1/#comment-1435</link>
		<dc:creator>J</dc:creator>
		<pubDate>Thu, 09 Apr 2009 21:21:04 +0000</pubDate>
		<guid isPermaLink="false">http://pv3d.org/?p=325#comment-1435</guid>
		<description>Question: what exactly does startRendering() call?  Is it tied to extending BasicView?</description>
		<content:encoded><![CDATA[<p>Question: what exactly does startRendering() call?  Is it tied to extending BasicView?</p>
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		<title>By: oliver_l1</title>
		<link>http://pv3d.org/2009/01/15/rolling-a-sphere-with-keyboard-and-box2dflash-physics/comment-page-1/#comment-561</link>
		<dc:creator>oliver_l1</dc:creator>
		<pubDate>Sun, 01 Feb 2009 20:11:07 +0000</pubDate>
		<guid isPermaLink="false">http://pv3d.org/?p=325#comment-561</guid>
		<description>pv3d and box2d rocks! great examples as always.</description>
		<content:encoded><![CDATA[<p>pv3d and box2d rocks! great examples as always.</p>
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	<item>
		<title>By: 3dSec</title>
		<link>http://pv3d.org/2009/01/15/rolling-a-sphere-with-keyboard-and-box2dflash-physics/comment-page-1/#comment-453</link>
		<dc:creator>3dSec</dc:creator>
		<pubDate>Mon, 19 Jan 2009 00:45:09 +0000</pubDate>
		<guid isPermaLink="false">http://pv3d.org/?p=325#comment-453</guid>
		<description>yeh i get it now.. 
but y cant we do this? 
var gravity:b2Vec2 = new b2Vec2(0.0, 0.0);
set the gravity to zero</description>
		<content:encoded><![CDATA[<p>yeh i get it now..<br />
but y cant we do this?<br />
var gravity:b2Vec2 = new b2Vec2(0.0, 0.0);<br />
set the gravity to zero</p>
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	<item>
		<title>By: John Lindquist</title>
		<link>http://pv3d.org/2009/01/15/rolling-a-sphere-with-keyboard-and-box2dflash-physics/comment-page-1/#comment-451</link>
		<dc:creator>John Lindquist</dc:creator>
		<pubDate>Sun, 18 Jan 2009 21:19:31 +0000</pubDate>
		<guid isPermaLink="false">http://pv3d.org/?p=325#comment-451</guid>
		<description>@3dSec - it&#039;s a way to nullify the gravity in box2dflash. Since gravity is required for any of the physics to work, you have to apply an opposite force to keep everything &quot;floating&quot;. Try downloading the example and commenting out those lines and you&#039;ll see what I mean.</description>
		<content:encoded><![CDATA[<p>@3dSec &#8211; it&#8217;s a way to nullify the gravity in box2dflash. Since gravity is required for any of the physics to work, you have to apply an opposite force to keep everything &#8220;floating&#8221;. Try downloading the example and commenting out those lines and you&#8217;ll see what I mean.</p>
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	<item>
		<title>By: 3dSec</title>
		<link>http://pv3d.org/2009/01/15/rolling-a-sphere-with-keyboard-and-box2dflash-physics/comment-page-1/#comment-443</link>
		<dc:creator>3dSec</dc:creator>
		<pubDate>Sun, 18 Jan 2009 05:26:29 +0000</pubDate>
		<guid isPermaLink="false">http://pv3d.org/?p=325#comment-443</guid>
		<description>can some 1 explain what&#039;s going on in this line?

var gravityOffset:b2Vec2 = world.m_gravity.Copy();
				gravityOffset.Multiply(-bb.m_mass);
				bb.ApplyForce(gravityOffset, bb.GetWorldCenter() );</description>
		<content:encoded><![CDATA[<p>can some 1 explain what&#8217;s going on in this line?</p>
<p>var gravityOffset:b2Vec2 = world.m_gravity.Copy();<br />
				gravityOffset.Multiply(-bb.m_mass);<br />
				bb.ApplyForce(gravityOffset, bb.GetWorldCenter() );</p>
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	<item>
		<title>By: BeechyBoy</title>
		<link>http://pv3d.org/2009/01/15/rolling-a-sphere-with-keyboard-and-box2dflash-physics/comment-page-1/#comment-421</link>
		<dc:creator>BeechyBoy</dc:creator>
		<pubDate>Thu, 15 Jan 2009 09:54:46 +0000</pubDate>
		<guid isPermaLink="false">http://pv3d.org/?p=325#comment-421</guid>
		<description>Some great potential here. Thanks for posting this :)</description>
		<content:encoded><![CDATA[<p>Some great potential here. Thanks for posting this <img src='http://pv3d.org/wp-includes/images/smilies/icon_smile.gif' alt=':)' class='wp-smiley' /> </p>
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