annotate pytouhou/utils/interpolator.py @ 54:b383b09bc735

Fix anim cycling
author Thibaut Girka <thib@sitedethib.com>
date Mon, 22 Aug 2011 23:43:40 +0200
parents ab826bc29aa2
children 694f25881d0f
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1 # -*- encoding: utf-8 -*-
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2 ##
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3 ## Copyright (C) 2011 Thibaut Girka <thib@sitedethib.com>
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4 ##
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5 ## This program is free software; you can redistribute it and/or modify
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6 ## it under the terms of the GNU General Public License as published
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7 ## by the Free Software Foundation; version 3 only.
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8 ##
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9 ## This program is distributed in the hope that it will be useful,
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10 ## but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 ## GNU General Public License for more details.
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13 ##
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15
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16 class Interpolator(object):
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17 def __init__(self, values=()):
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18 self.values = tuple(values)
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19 self.start_values = tuple(values)
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20 self.end_values = tuple(values)
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21 self.start_frame = 0
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22 self.end_frame = 0
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23 self._frame = 0
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26 def set_interpolation_start(self, frame, values):
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27 self.start_values = tuple(values)
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28 self.start_frame = frame
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31 def set_interpolation_end(self, frame, values):
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32 self.end_values = tuple(values)
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33 self.end_frame = frame
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36 def set_interpolation_end_frame(self, end_frame):
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37 self.end_frame = end_frame
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40 def set_interpolation_end_values(self, values):
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41 self.end_values = tuple(values)
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42
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43
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44 def update(self, frame):
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45 self._frame = frame
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46 if frame >= self.end_frame:
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47 self.values = tuple(self.end_values)
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48 self.start_values = tuple(self.end_values)
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49 self.start_frame = frame
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50 return frame == self.end_frame
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51 else:
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52 truc = float(frame - self.start_frame) / float(self.end_frame - self.start_frame)
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53 self.values = tuple(start_value + truc * (end_value - start_value)
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54 for (start_value, end_value) in zip(self.start_values, self.end_values))
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55 return True
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