Source Code for Module SmootLight.pixelevents.DecayEvent

 1  from operationscore.PixelEvent import * 
 2  import math 
 3  from util.ColorOps import *  
 4  import util.Geo as Geo 
 5 -class DecayEvent(PixelEvent): 
 6      """DecayEvent is a pixel event that can decay either Exponentially or Proportionally.  Specify: 
 7      <DecayType> -- Exponential or Proportional 
 8      <Coefficient> -- Controls the speed of decay.""" 
 9   
10 -    def initEvent(self): 
11          self.coefficient = float(abs(self.Coefficient)) 
12          if self.DecayType == 'Exponential': 
13              self.decayType = 1 
14          else: 
15              self.decayType = 2 
16          self.color = self.Color    
17           
18      #SUBVERTING DESIGN FOR THE SAKE OF EFFICIENCY -- RUSSELL COHEN (2011-01-03-23:18)     
19 -    def state(self,timeDelay): 
20          if self.decayType == 1: 
21              decay = Geo.approxexp(timeDelay*-1*self.coefficient) 
22          if self.decayType == 2: 
23              decay = self.coefficient / timeDelay 
24          color = multiplyColor(self.color, decay) 
25          return color if (color[0] + color[1] + color[2]) > 5 else None 
26           
27      @staticmethod 
28 -    def generate(decayType, coefficient, color): 
29          args = {'DecayType': decayType, 'Coefficient':coefficient, 'Color':color} 
30          return DecayEvent(args) 
31