Source Code for Module SmootLight.operationscore.PixelMapper

 1  from operationscore.SmootCoreObject import * 
 2  from logger import main_log 
 3  import pdb 
 4 -class PixelMapper(SmootCoreObject): 
 5      """PixelMapper is the parent class for PixelMappers.  Inheriting classes should define 
 6      mappingFunction which takes an eventLocation and a screen and returns a list of (weight, pixels).  PixelMapper 
 7      handles caching automatically.""" 
 8 -    def init(self): 
 9          self.mem = {} #Dictionary of all seen events 
10          self.totalCalls = 0 
11          self.cachehits = 0 
12 -    def mapEvent(self, eventLocation, screen): 
13          self.totalCalls += 1 
14          if self.totalCalls % 100 == 0: 
15              main_log.info('Cache percentage for :', self['Id'], self.cachehits /\ 
16                  float(self.totalCalls)) 
17          if eventLocation in self.mem: 
18              self.cachehits += 1 
19              return self.mem[eventLocation] 
20          else: 
21              self.mem[eventLocation] = self.mappingFunction(eventLocation, screen) 
22              return self.mem[eventLocation] 
23      #Takes a Screen and returns a list of tuples 
24      #(pixel, weight), with the sum of weights = 1 
25 -    def mappingFunction(self,eventLocation, screen): 
26          """Takes a Screen and event location and returns a list of tuples (pixel,weight) with 
27          sum(weights)=1""" 
28          raise Exception('Mapping function not defined!') 
29