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	<title>Real-Time Physics Simulation Forum</title>
	
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	<updated>2014-02-03T05:59:45+00:00</updated>

	<author><name><![CDATA[Real-Time Physics Simulation Forum]]></name></author>
	<id>https://pybullet.org/Bullet/phpBB3/app.php/feed/topic/9729</id>

		<entry>
		<author><name><![CDATA[xerion]]></name></author>
		<updated>2014-02-03T05:59:45+00:00</updated>

		<published>2014-02-03T05:59:45+00:00</published>
		<id>https://pybullet.org/Bullet/phpBB3/viewtopic.php?p=32809#p32809</id>
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		<title type="html"><![CDATA[Collission test not returning all contacts]]></title>

		
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Hey all,<br><br>I am doing some frustrum culling and then narrowphase collision detection but it seems that in some cases not all the collisions are returned.<br>For example I have a plane object represented in bullet as a convex shape of 4 points (the issue I am seeing is mainly related to convex shapes and not with box, sphere, etc..).<br><br>You can see in the attached screenshot, the plane along with the bullet object ( debugDrawWorld() ).<br>The other object is a btPairCachingGhostObject and its shape is the convex of the frustrum (8 points) that is constructed on mouse click.<br>It clearly has a contact with the plane convex shape but in this case there are no contacts returned.<br><br>Depending where I click I either get a contact result or not.<br><br>Any ideas of what's possibly going on ?<dl class="file"><dt class="attach-image"><img src="https://pybullet.org/Bullet/phpBB3/download/file.php?id=1184" class="postimage" alt="Untitled.png" onclick="viewableArea(this);" /></dt></dl><p>Statistics: Posted by <a href="https://pybullet.org/Bullet/phpBB3/memberlist.php?mode=viewprofile&amp;u=10684">xerion</a> — Mon Feb 03, 2014 5:59 am</p><hr />
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