311 	def compileDeltaValues_(deltas):  argument
329 		while pos < len(deltas):
330 			value = deltas[pos]
332 				pos = TupleVariation.encodeDeltaRunAsZeroes_(deltas, pos, stream)
334 				pos = TupleVariation.encodeDeltaRunAsBytes_(deltas, pos, stream)
336 				pos = TupleVariation.encodeDeltaRunAsWords_(deltas, pos, stream)
340 	def encodeDeltaRunAsZeroes_(deltas, offset, stream):  argument
343 		numDeltas = len(deltas)
344 		while pos < numDeltas and runLength < 64 and deltas[pos] == 0:
352 	def encodeDeltaRunAsBytes_(deltas, offset, stream):  argument
355 		numDeltas = len(deltas)
357 			value = deltas[pos]
368 			if value == 0 and pos+1 < numDeltas and deltas[pos+1] == 0:
375 			stream.write(struct.pack('b', otRound(deltas[i])))
379 	def encodeDeltaRunAsWords_(deltas, offset, stream):  argument
382 		numDeltas = len(deltas)
384 			value = deltas[pos]
402 			if isByteEncodable(value) and pos+1 < numDeltas and isByteEncodable(deltas[pos+1]):
409 			stream.write(struct.pack('>h', otRound(deltas[i])))
425 					deltas = array.array("h")
428 					deltas = array.array("b")
430 				deltas.fromstring(data[pos:pos+deltasSize])
431 				if sys.byteorder != "big": deltas.byteswap()
432 				assert len(deltas) == numDeltasInRun
434 				result.extend(deltas)
708 	deltas = [None] * pointCount
715 				deltas[p] = delta
724 				deltas[p] = (x, y)
726 	return TupleVariation(axes, deltas)