88 		deltas = self._model.getDeltas(master_values)
89 		base = otRound(deltas.pop(0))
90 		return base, self.storeDeltas(deltas)
92 	def storeDeltas(self, deltas):  argument
96 		deltas = [otRound(d) for d in deltas]
97 		if len(deltas) == len(self._supports) + 1:
98 			deltas = tuple(deltas[1:])
100 			assert len(deltas) == len(self._supports)
101 			deltas = tuple(deltas)
103 		varIdx = self._cache.get(deltas)
113 			return self.storeDeltas(deltas)
114 		self._data.addItem(deltas)
117 		self._cache[deltas] = varIdx
120 def VarData_addItem(self, deltas):  argument
121 	deltas = [otRound(d) for d in deltas]
124 	countThem = len(deltas)
126 		deltas = tuple(deltas[1:])
129 		deltas = tuple(deltas)
130 	self.Item.append(list(deltas))
166 	def interpolateFromDeltasAndScalars(deltas, scalars):  argument
168 		for d,s in zip(deltas, scalars):
177 		deltas = varData[major].Item[minor]
178 		return self.interpolateFromDeltasAndScalars(deltas, scalars)
180 	def interpolateFromDeltas(self, varDataIndex, deltas):  argument
184 		return self.interpolateFromDeltasAndScalars(deltas, scalars)