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13
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1 class Interpolator(object):
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2 def __init__(self, values=()):
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3 self.values = tuple(values)
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4 self.start_values = tuple(values)
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5 self.end_values = tuple(values)
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6 self.start_frame = 0
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7 self.end_frame = 0
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8
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9
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10 def set_interpolation_start(self, frame, values):
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11 self.start_values = tuple(values)
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12 self.start_frame = frame
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13
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14
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15 def set_interpolation_end(self, frame, values):
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16 self.end_values = tuple(values)
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17 self.end_frame = frame
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18
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19
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20 def set_interpolation_end_frame(self, end_frame):
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21 self.end_frame = end_frame
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22
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23
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24 def set_interpolation_end_values(self, values):
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25 self.end_values = tuple(values)
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26
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27
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28 def update(self, frame):
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29 if frame >= self.end_frame:
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30 self.values = tuple(self.end_values)
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31 self.start_values = tuple(self.end_values)
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32 self.start_frame = frame
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33 else:
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34 truc = float(frame - self.start_frame) / float(self.end_frame - self.start_frame)
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35 self.values = tuple(start_value + truc * (end_value - start_value)
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36 for (start_value, end_value) in zip(self.start_values, self.end_values))
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