Pause and UnPause a Rigidbody in Unity 2

Nerd stuff ahead.  I needed to freeze a Rigidbody attached to an Object during a scene transition and then unfreeze and maintain the same velocity after the scene has finished loading. It sounds simple but Unity does not appear to have pausing/resuming functionality natively on a Rigidbody. You may be thinking that Sleep or WakeUp functions will help you; They will not. And setting an object isKinematic destroys velocity variables.

The most elegant solution I came up with was a class extension for Rigidbody that would store and recover key variables. With this file present anywhere in your project, you can call rigidbody.Pause() and rigidbody.UnPause() without having to make any new object references.

#RigidBodyExtension.cs
using UnityEngine;
using System.Collections;

public static class RigidbodyExtension  {

	static Vector3 velocity;
	static Vector3 angularVelocity;

	public static void Pause(this Rigidbody rb)
	{
		velocity = rb.velocity;
		angularVelocity = rb.angularVelocity;
		rb.isKinematic = true;

	}
	public static void UnPause(this Rigidbody rb)
	{
		rb.isKinematic = false;
		rb.velocity = velocity;
		rb.angularVelocity = angularVelocity;
	}
}

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