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from operationscore.SmootCoreObject import *
from logger import main_log
import pdb
class PixelMapper(SmootCoreObject):
"""PixelMapper is the parent class for PixelMappers. Inheriting classes should define
mappingFunction which takes an eventLocation and a screen and returns a list of (weight, pixels). PixelMapper
handles caching automatically."""
def init(self):
self.mem = {} #Dictionary of all seen events
self.totalCalls = 0
self.cachehits = 0
def mapEvent(self, eventLocation, screen):
self.totalCalls += 1
if self.totalCalls % 100 == 0:
main_log.info('Cache percentage for :', self['Id'], self.cachehits /\
float(self.totalCalls))
if eventLocation in self.mem:
self.cachehits += 1
return self.mem[eventLocation]
else:
self.mem[eventLocation] = self.mappingFunction(eventLocation, screen)
return self.mem[eventLocation]
#Takes a Screen and returns a list of tuples
#(pixel, weight), with the sum of weights = 1
def mappingFunction(self,eventLocation, screen):
"""Takes a Screen and event location and returns a list of tuples (pixel,weight) with
sum(weights)=1"""
raise Exception('Mapping function not defined!')
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