added polyline instead of line

mapgen.py

@@ -1,8 +1,6 @@
 #!/usr/bin/python
 # -*- coding: utf-8 -*-
 
-# http://stackoverflow.com/questions/8997099/algorithm-to-generate-random-2d-polygon
-
 import os, glob, errno
 import math, random
 from PIL import Image, ImageDraw
@@ -11,7 +9,7 @@ import datetime
 from sympy.geometry import Circle, Point
 
 
-
+#  http://stackoverflow.com/questions/8997099/algorithm-to-generate-random-2d-polygon
 def generatePolygon( ctrX, ctrY, aveRadius, irregularity, spikeyness, numVerts ) :
    '''Start with the centre of the polygon at ctrX, ctrY,
     then creates the polygon by sampling points on a circle around the centre.
@@ -57,10 +55,9 @@ def generatePolygon( ctrX, ctrY, aveRadius, irregularity, spikeyness, numVerts )
 
      angle = angle + angleSteps[i]
 
-   for i in range(10):
-      points = fractalize(points)
+   lines = fractalize(points)
 
-   return points
+   return lines
 
 def clip(x, min, max) :
    if( min > max ) :  return x
@@ -69,26 +66,46 @@ def clip(x, min, max) :
    else :             return x
 
 
-def fractalize(pts) :
-   print("Fractalize")
-   print(pts)
-   points = []
-   for v in range(0, len(pts)):
-      p1 = pts[v]
-      print(p1)
-      points.append(p1)
-      p2 = pts[0] if v >= len(pts)-1 else pts[v+1];
-      d = distance(p1,p2)
-      # print(d)
-      r = d*0.52
-      ps1,ps2 = circle_intersection((p1[0],p1[1],r), (p2[0],p2[1],r))
-      print(ps1)
-      # print(ps2)
-      if random.randint(1,2) == 2:
-         points.append(ps2)
-      else:
-         points.append(ps1)
-   return points
+def fractalize(points) :
+   # print("Fractalize")
+   # print(points)
+   lines = []
+   for p in range(0, len(points)):
+      p1 = points[p]
+      # print(p1)
+      # points.append(p1)
+      p2 = points[0] if p >= len(points)-1 else points[p+1];
+      pts = [p1,p2]
+
+      # fractalize the line
+      if random.randint(1,10) > 3:
+         # number of fracatllization
+         for i in range(10):
+            # loop throug points to divide then
+            fpts = []
+            for v in range(0, len(pts)-1):
+               fp1 = pts[v]
+               fpts.append(fp1)
+               fp2 = pts[v+1];
+               d = distance(fp1,fp2)
+               # print(d)
+               r = d*0.52
+               fps1,fps2 = circle_intersection((fp1[0],fp1[1],r), (fp2[0],fp2[1],r))
+               # print(fps1)
+               # print(ps2)
+               if random.randint(1,2) == 2:
+                  fpts.append(fps2)
+               else:
+                  fpts.append(fps1)
+
+            # add the last point
+            fpts.append(fp2)
+            pts = fpts
+
+      # add the line, fractalized or not
+      lines.append(pts)
+
+   return lines
 
 # Distance function
 def distance(p1,p2):
@@ -143,10 +160,11 @@ except OSError as exception:
       raise
 
 
-for i in range(0, 1):
-
+for i in range(0, 99):
+   print(i)
    nv = random.randint(5,30)
-   verts = generatePolygon( ctrX=500, ctrY=500, aveRadius=300, irregularity=1, spikeyness=0.4, numVerts=nv )
+   lines = generatePolygon( ctrX=500, ctrY=500, aveRadius=300, irregularity=1, spikeyness=0.4, numVerts=nv )
+   # print(lines)
 
    index = str(i) if i > 9 else '0'+str(i)
 
@@ -158,27 +176,40 @@ for i in range(0, 1):
 
    svg = svgwrite.Drawing(filename = directory+"/map"+index+".svg",size = ("1000px", "1000px"))
 
-   # print(len(verts))
-   for v in range(0, len(verts)):
-      # print('---- '+str(v)+' ----')
-      p1 = verts[v]
-      p2 = verts[0] if v >= len(verts)-1 else verts[v+1];
-      # print(p1)
-      # print(p2)
-
-      # if random.randint(0,10) > 8:
-      #    sda = "4 4"
-      #    sdo = "5"
-      # else:
-      sda = "0 0"
-      sdo = "0"
+   # polygone (white background)
+   polygone = []
+   for l in range(0, len(lines)):
+      for p in range(0, len(lines[l])):
+         polygone.append(lines[l][p])
+
+   bgline = svg.polyline(polygone,
+      stroke = "white",
+      stroke_width = "30",
+      stroke_linejoin= "round",
+      stroke_linecap = "round",
+      fill = "white")
+   svg.add(bgline)
+
+   # strokes
+   for l in range(0, len(lines)):
+      # change randomly stroke attributes
+      if random.randint(0,10) > 8: # and len(lines[L]) < 3:
+         sw = "1"
+         sda = "4 4"
+         sdo = "5"
+      else:
+         sw = "1"
+         sda = "0 0"
+         sdo = "0"
 
-      line = svg.line(p1, p2,
-         stroke_width = "1",
+      line = svg.polyline(lines[l],
          stroke = "black",
+         stroke_width = sw,
+         stroke_linejoin= "round",
          stroke_linecap = "round",
          stroke_dasharray = sda,
-         stroke_dashoffset = sdo)
+         stroke_dashoffset = sdo,
+         fill = "none")
       svg.add(line)
 
    svg.save()