Coverage for /home/travis/build/RobotLocomotion/director/build/src/director-build/lib/python2.7/dist-packages/director/simpletimer : 0%
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import time
class SimpleTimer(object):
def __init__(self): self.reset()
def now(self): return time.time()
def elapsed(self): return self.now() - self.t0
def reset(self): self.t0 = self.now()
class FPSCounter(object):
def __init__(self): self.averageComputer = MovingAverageComputer() self.printToConsole = False
def tick(self): newAverage = self.averageComputer.timer.elapsed() > self.averageComputer.timeWindow self.averageComputer.update(1) if newAverage and self.printToConsole: print 'fps:', self.getAverageFPS()
def getAverageFPS(self): return self.averageComputer.getAverage()
class AverageComputer(object):
def __init__(self): self.timer = SimpleTimer() self.quantity = 0.0
def update(self, quantitySinceLastUpdate): self.quantity += quantitySinceLastUpdate
def getAverage(self): return self.quantity / self.timer.elapsed()
def reset(self): self.quantity = 0.0 self.timer.reset()
class MovingAverageComputer(object):
def __init__(self): self.timer = SimpleTimer() self.alpha = 0.9 self.timeWindow = 1.0 self.average = 0.0 self.quantityThisWindow = 0.0
def update(self, quantitySinceLastUpdate): self.quantityThisWindow += quantitySinceLastUpdate self._updateAverage()
def getAverage(self): self._updateAverage() return self.average
def _updateAverage(self):
elapsedTime = self.timer.elapsed()
if elapsedTime > self.timeWindow:
# compute FPS for this time window averageThisWindow = self.quantityThisWindow / elapsedTime
# update moving average self.average = self.alpha * averageThisWindow + (1.0 - self.alpha) * self.average
# reset self.timer.reset() self.quantityThisWindow = 0.0 |