Diagram.py: simplify draw_star()

[experiments/RadialSymmetry.git] / Diagram.py

diff --git a/Diagram.py b/Diagram.py
index fa35d32..3a03949 100755 (executable)
--- a/Diagram.py
+++ b/Diagram.py
@@ -23,7 +23,7 @@ from math import *
 
 class Diagram(object):
 
-    def __init__(self, width, height, background=[1, 1, 1]):
+    def __init__(self, width, height, background=[1, 1, 1], font_size=20):
         self.width = width
         self.height = height
         self.background = background
@@ -38,7 +38,7 @@ class Diagram(object):
 
         cr.select_font_face("Georgia", cairo.FONT_SLANT_NORMAL,
                             cairo.FONT_WEIGHT_NORMAL)
-        cr.set_font_size(20)
+        cr.set_font_size(font_size)
 
         # Adjust the font matrix to left-bottom origin
         M = cr.get_font_matrix()
@@ -125,11 +125,9 @@ class Diagram(object):
     def draw_star(self, cx, cy, verts, stroke_color=[0, 0, 0]):
         cr = self.cr
 
-        v = verts[0]
-        cr.move_to(cx, cy)
         for v in verts:
-            cr.line_to(v[0], v[1])
             cr.move_to(cx, cy)
+            cr.line_to(v[0], v[1])
 
         r, g, b, a = self.color_to_rgba(stroke_color)
         cr.set_source_rgba(r, g, b, a)