code: private static boolean envelopeInfContainsEnvelope_(Envelope2D env_a,
  			Envelope2D env_b, double tolerance) {
  		Envelope2D env_a_inflated = new Envelope2D();
  		env_a_inflated.setCoords(env_a);
  		env_a_inflated.inflate(tolerance, tolerance);
  		return env_a_inflated.contains(env_b);
  	}
docs: Returns true if env_a inflated contains env_b.