From c2ab70eefefcccf826c5264eccfcd2fed86b02e6 Mon Sep 17 00:00:00 2001
From: Florian Festi <florian@festi.info>
Date: Wed, 22 Mar 2017 21:56:50 +0100
Subject: [PATCH] Add Boxes.circle() primitive

---
 boxes/__init__.py | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/boxes/__init__.py b/boxes/__init__.py
index da55c6f..4e3f06c 100755
--- a/boxes/__init__.py
+++ b/boxes/__init__.py
@@ -877,6 +877,26 @@ class Boxes:
                 self.moveTo(self.spacing / 2.0, self.spacing / 2.0)
         return dontdraw
 
+    @restore
+    def circle(self, x, y, r):
+        """
+        Draw a round disc
+
+        :param x: position
+        :param y: postion
+        :param r: radius
+
+        """
+        r += self.burn
+        self.moveTo(x + r, y)
+        a = 0
+        n = 10
+        da = 2 * math.pi / n
+        for i in range(n):
+            self.ctx.arc(-r, 0, r, a, a+da)
+            a += da
+        self.ctx.stroke()
+
     @restore
     @holeCol
     def hole(self, x, y, r):