public void setAngularSleepingThreshold(float angularSleepingThreshold) {
        constructionInfo.angularSleepingThreshold = angularSleepingThreshold;
        rBody.setSleepingThresholds(constructionInfo.linearSleepingThreshold, angularSleepingThreshold);
    }
sets the sleeping thresholds, these define when the object gets deactivated
to save resources. Low values keep the object active when it barely moves
@param linear the linear sleeping threshold
@param angular the angular sleeping threshold
jme3-jbullet/src/main/java/com/jme3/bullet/objects/PhysicsRigidBody.java