FpsCounter

Complexity

Total Complexity

4

Size/Duplication

Total Lines	34
Duplicated Lines	0 %

3 Methods

Rating	Name	Duplication	Size	Complexity
A	get_fps()	0	11	2
A	tick()	0	12	1
A	__init__()	0	7	1

import platform
import time
import sys

pyVer = sys.version_info

# Choose best time function for what we are running on
if pyVer.major == 3 and pyVer.minor >= 3:
    time_func = time.monotonic
elif platform.system() == 'Windows':
    time_func = time.clock
else:
    time_func = time.time

class Timer(object):
    ''' General purpose timing class. '''
    def __init__(self):
        self.currentTime = self.previousTime = self.time()

        self.tickDelta = 0

    def time(self):
        ''' Get current time in miliseconds '''
        return int(time_func() * 1000)

    def tick(self):
        ''' Get time delta since last call of tick '''
        self.previousTime = self.currentTime

        self.currentTime = self.time()

        self.tickDelta = self.currentTime - self.previousTime

        return self.tickDelta

class FpsCounter(Timer):
    ''' Helper class for Frames per Second calculation '''
    def __init__(self):

        super(FpsCounter, self).__init__()

        self.frames = 0
        self.fpsTime = 0
        self.fps = 0

    def tick(self):
        '''
        Calculate Time delta, and keep running total of frames since last
        fps calculation.
        Must be called once per rendered frame.
        '''
        super(FpsCounter, self).tick()

        self.fpsTime += self.tickDelta
        self.frames += 1

        return self.tickDelta

    def get_fps(self):
        ''' Calculate and return the estimated Frames Per Second '''
        if self.fpsTime == 0:
            self.fpsTime += 1

        self.fps = self.frames / (self.fpsTime / 1000.0)

        self.fpsTime = 0
        self.frames = 0

        return self.fps