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	<title>Real-Time Physics Simulation Forum</title>
	
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	<updated>2020-08-14T17:40:30+00:00</updated>

	<author><name><![CDATA[Real-Time Physics Simulation Forum]]></name></author>
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		<entry>
		<author><name><![CDATA[rfunes]]></name></author>
		<updated>2020-08-14T17:40:30+00:00</updated>

		<published>2020-08-14T17:40:30+00:00</published>
		<id>https://pybullet.org/Bullet/phpBB3/viewtopic.php?p=43067#p43067</id>
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		<title type="html"><![CDATA[Doubt about Flags, Filters &amp; Masks]]></title>

		
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Hello Experts !<br><br>Could you please help me understand the difference / relationship between these 4 flags/filters/masks?<br><ul><li>ContactCallbackFlag</li></ul><ul><li>ContactCallbackFilter</li></ul><ul><li>CollisionFilterGroup</li></ul><ul><li>CollisionFilterMask</li></ul>I am using CollisionFilterMask to ignore rayTest results from a few objects, but during development I noticed that I keep making a lot of confusion between these 4 concepts.<br><br>Best Regards !<br>Ricardo<p>Statistics: Posted by <a href="https://pybullet.org/Bullet/phpBB3/memberlist.php?mode=viewprofile&amp;u=13685">rfunes</a> — Fri Aug 14, 2020 5:40 pm</p><hr />
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