40 lines
1.4 KiB
Python
40 lines
1.4 KiB
Python
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from direct.directnotify import DirectNotifyGlobal
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import RingAction
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class RingTrack:
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notify = DirectNotifyGlobal.directNotify.newCategory('RingTrack')
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def __init__(self, actions, actionDurations = None, reverseFlag = 0):
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if actionDurations == None:
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actionDurations = [1.0 / float(len(actions))] * len(actions)
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sum = 0.0
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for duration in actionDurations:
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sum += duration
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if sum != 1.0:
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self.notify.warning('action lengths do not sum to 1.; sum=' + str(sum))
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self.actions = actions
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self.actionDurations = actionDurations
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self.reverseFlag = reverseFlag
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return
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def eval(self, t):
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t = float(t)
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if self.reverseFlag:
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t = 1.0 - t
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actionStart = 0.0
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for action, duration in zip(self.actions, self.actionDurations):
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actionEnd = actionStart + duration
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if t < actionEnd:
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actionT = (t - actionStart) / duration
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return action.eval(actionT)
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else:
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actionStart = actionEnd
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if t == actionStart:
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self.notify.debug('time value is at end of ring track: ' + str(t) + ' == ' + str(actionStart))
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else:
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self.notify.debug('time value is beyond end of ring track: ' + str(t) + ' > ' + str(actionStart))
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lastAction = self.actions[len(self.actions) - 1]
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return lastAction.eval(1.0)
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