rameters
</b></font></td></tr>
</table>
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<pre>
ID
</pre>
<blockquote>
Integer
<br>
ID number of the rigid body
</blockquote>
<pre>
density#
</pre>
<blockquote>
Float
<br>
new density, the default is 0.0 and the range is from 0 to infinity
</blockquote>
<pre>
total mass#
</pre>
<blockquote>
Float
<br>
new mass, the default is 0.0 and the range is from 0 to infinity
</blockquote>
</font>
<BR>
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