<Entity name="GranularBody" source="Particle">
  <Attribute.Scalar name="angularVelocity" type="Vec3"/>
  <Attribute.Scalar name="oldAngularVelocity" type="Vec3"/>
	<Attribute.Scalar name="rotation" type="Quat"/>
	<Attribute.Scalar name="torque" type="Vec3"/>
	<!-- I = (2/5)*m*R^2 in all directions because of body symmetry -->
  <Attribute.Scalar name="inertia" type="Real"/>
  <Attribute.Scalar name="invInertia" type="Real"/>
</Entity>
