Source Code for Module SmootLight.util.Geo

 1  #Geometry code 
 2  import math 
 3  from bisect import * 
 4  import random 
 5 -def pointWithinBoundingBox(point, bb):  
 6      """Returns whether or not a point (x,y) is within a bounding box (xmin, ymin, xmax, ymax)""" 
 7      return all([(point[i % 2] <= bb[i]) == (i>1) for i in range(4)]) 
 8   
 9 -def addLocations(l1,l2): 
10      return tuple([l1[i]+l2[i] for i in range(len(l1))]) 
11   
12 -def gaussian(x,height,center,width): 
13      a=height 
14      b=center 
15      c=width 
16      return a*math.exp(-((x-b)**2)/(2*c**2)) 
17   
18 -def dist(l1, l2): 
19      return math.sqrt((l1[0]-l2[0])**2+(l1[1]-l2[1])**2) #For speed 
20   
21 -def randomLoc(boundingBox): #TODO: make less shitty 
22      loc = [] 
23      loc.append(random.randint(0, boundingBox[0])) 
24      loc.append(random.randint(0, boundingBox[1])) 
25      return tuple(loc) 
26   
27 -def approxexp(x): 
28      """Approximates exp with a 3 term Taylor Series.""" 
29      return 1+x+x**2/2+x**3/6 
30   
31 -def windtrail(x,y,height,center,width): 
32      a=height 
33      b=center 
34      c=width 
35      return a*((math.exp(-((x-b))/(c)))**2)*(math.exp(-((y))/(0.2*c)))**2 
36   
37 -class Location(object): 
38 -    def __init__(self,x=0,y=0): 
39          self.x = x 
40          self.y = y 
41 -    def __add__(self, b): 
42          return Location(self.x+b.x, self.y+b.y) 
43