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	<title>Real-Time Physics Simulation Forum</title>
	
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	<updated>2014-01-30T23:13:44+00:00</updated>

	<author><name><![CDATA[Real-Time Physics Simulation Forum]]></name></author>
	<id>https://pybullet.org/Bullet/phpBB3/app.php/feed/topic/9721</id>

		<entry>
		<author><name><![CDATA[pccsoares]]></name></author>
		<updated>2014-01-30T23:13:44+00:00</updated>

		<published>2014-01-30T23:13:44+00:00</published>
		<id>https://pybullet.org/Bullet/phpBB3/viewtopic.php?p=32754#p32754</id>
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		<title type="html"><![CDATA[Restitution with CCD - bouncing sphere]]></title>

		
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I've just enable CCD on a fast moving sphere on my bullet application.<br><br>On the images bellow you can see my sphere bouncing without CCD on the left, and with CCD on the right to prevent tunneling with faster velocities.<br>The ground surface is the same on both examples and it's the same sphere.<br><br><img src="http://farm3.staticflickr.com/2880/12227607675_ebe7cbd4b7_b.jpg" class="postimage" alt="Image"><br><br>The restitution values are the same on both examples, but with CCD the sphere looses momentum after collision.<br>I have checked the sphere velocity on collision and with CCD enabled, it's much lower than without.<br><br>This might be explained from the force bullet is applying to prevent penetration.<br><br>Is there a way to improve the sphere collision response with CCD?<br>I'm trying to avoid setting an higher FPS on the simulation.<p>Statistics: Posted by <a href="https://pybullet.org/Bullet/phpBB3/memberlist.php?mode=viewprofile&amp;u=10669">pccsoares</a> — Thu Jan 30, 2014 11:13 pm</p><hr />
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