From d946ab2b442df0118dc7e3d2d51ab30f3fb583cd Mon Sep 17 00:00:00 2001
From: Gary Martin <gary@garycmartin.com>
Date: Tue, 05 Oct 2010 21:19:32 +0000
Subject: More pylint fixes (mainly trailing spaces).

---
(limited to 'helpers.py')

diff --git a/helpers.py b/helpers.py
index 3348f15..889534b 100644
--- a/helpers.py
+++ b/helpers.py
@@ -24,37 +24,37 @@
 import math
 # distance calculator, pt1 and pt2 are ordred pairs
 def distance(pt1, pt2):
-        return math.sqrt((pt1[0] - pt2[0]) ** 2 + (pt1[1] -pt2[1]) ** 2)
+        return math.sqrt((pt1[0] - pt2[0]) ** 2 + (pt1[1] - pt2[1]) ** 2)
 
 # returns the angle between the line segment from pt1 --> pt2 and the x axis, from -pi to pi
 def getAngle(pt1,pt2):
     xcomp = pt2[0] - pt1[0]
     ycomp = pt1[1] - pt2[1]
-    return math.atan2(ycomp,xcomp)
+    return math.atan2(ycomp, xcomp)
 
 # returns a list of ordered pairs that describe an equilteral triangle around the segment from pt1 --> pt2
 def constructTriangleFromLine(p1,p2):
-    halfHeightVector = (0.57735*(p2[1] - p1[1]), 0.57735*(p2[0] - p1[0]))
+    halfHeightVector = (0.57735 * (p2[1] - p1[1]), 0.57735 * (p2[0] - p1[0]))
     p3 = (p1[0] + halfHeightVector[0], p1[1] - halfHeightVector[1])
     p4 = (p1[0] - halfHeightVector[0], p1[1] + halfHeightVector[1])
-    return [p2,p3,p4]
+    return [p2, p3, p4]
 
 # returns the area of a polygon
 def polyArea(vertices):
     n = len(vertices)
     A = 0
-    p=n-1
+    p=n - 1
     q=0
-    while q<n:
-        A+=vertices[p][0]*vertices[q][1] - vertices[q][0]*vertices[p][1]
+    while q < n:
+        A+=vertices[p][0] * vertices[q][1] - vertices[q][0] * vertices[p][1]
         p=q
         q += 1
-    return A/2.0
+    return A / 2.0
 
 #Some polygon magic, thanks to John W. Ratcliff on www.flipcode.com
     
 # returns true if pt is in triangle
-def insideTriangle(pt,triangle):
+def insideTriangle(pt, triangle):
 
     ax = triangle[2][0] - triangle[1][0]
     ay = triangle[2][1] - triangle[1][1]
@@ -68,74 +68,73 @@ def insideTriangle(pt,triangle):
     bpy= pt[1] - triangle[1][1]
     cpx= pt[0] - triangle[2][0]
     cpy= pt[1] - triangle[2][1]
-    
-    aCROSSbp = ax*bpy - ay*bpx
-    cCROSSap = cx*apy - cy*apx
-    bCROSScp = bx*cpy - by*cpx  
-    return aCROSSbp >= 0.0 and bCROSScp >= 0.0 and cCROSSap >= 0.0    
 
-def polySnip(vertices,u,v,w,n):
+    aCROSSbp = ax * bpy - ay * bpx
+    cCROSSap = cx * apy - cy * apx
+    bCROSScp = bx * cpy - by * cpx  
+    return aCROSSbp >= 0.0 and bCROSScp >= 0.0 and cCROSSap >= 0.0
+
+def polySnip(vertices, u, v, w, n):
     EPSILON = 0.0000000001
-    
+
     Ax = vertices[u][0]
     Ay = vertices[u][1]
-    
+
     Bx = vertices[v][0]
     By = vertices[v][1]
-    
+
     Cx = vertices[w][0]
     Cy = vertices[w][1]
-    
-    if EPSILON > (((Bx-Ax)*(Cy-Ay)) - ((By-Ay)*(Cx-Ax))):  return False
-    
-    for p in range(0,n):
+
+    if EPSILON > (((Bx-Ax) * (Cy - Ay)) - ((By - Ay) * (Cx - Ax))):  return False
+
+    for p in range(0, n):
         if p == u or p == v or p == w: continue
-        Px = vertices[p][0];
-        Py = vertices[p][1];        
-        if insideTriangle((Px,Py),((Ax,Ay),(Bx,By),(Cx,Cy))): return False;
-    
-    return True;
-    
-    
+        Px = vertices[p][0]
+        Py = vertices[p][1]
+        if insideTriangle((Px, Py), ((Ax, Ay), (Bx, By), (Cx, Cy))): return False
+
+    return True
+
+
 # decomposes a polygon into its triangles
 def decomposePoly(vertices):
     vertices = list(vertices)
     n = len(vertices)
     result = []
     if(n < 3): return [] # not a poly!
-    
+
     # force a counter-clockwise polygon
     if 0 >= polyArea(vertices):
         vertices.reverse()
-    
-    # remove nv-2 vertices, creating 1 triangle every time        
+
+    # remove nv-2 vertices, creating 1 triangle every time
     nv = n
-    count = 2*nv # error detection
-    m=0
-    v=nv-1
-    while nv>2:
+    count = 2 * nv # error detection
+    m = 0
+    v = nv - 1
+    while nv > 2:
         count -= 1
-        if 0>= count:
+        if 0 >= count:
             return [] # Error -- probably bad polygon
-        
+
         # three consecutive vertices
         u = v 
-        if nv<=u: u = 0      # previous
-        v = u+1
-        if nv<=v: v = 0    # new v
-        w = v+1
-        if nv<=w: w = 0    # next
-
-        if(polySnip(vertices,u,v,w,nv)):
-            
+        if nv <= u: u = 0      # previous
+        v = u + 1
+        if nv <= v: v = 0    # new v
+        w = v + 1
+        if nv <= w: w = 0    # next
+
+        if(polySnip(vertices, u, v, w, nv)):
+
             # record this triangle
-            result.append((vertices[u],vertices[v],vertices[w]))
-            
-            m+=1
+            result.append((vertices[u], vertices[v], vertices[w]))
+
+            m += 1
             # remove v from remaining polygon
             vertices.pop(v)
             nv -= 1
             # reset error detection
-            count = 2*nv
-    return result
-
+            count = 2 * nv
+    return result
\ No newline at end of file
--
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