Add simpe box demonstration the bed bolts

box.py

@@ -0,0 +1,35 @@
+#!/usr/bin/python
+
+from boxes import *
+
+class Box(Boxes):
+    def __init__(self, x, y, h):
+        self.x, self.y, self.h = x, y, h
+        Boxes.__init__(self, width=x+y+40, height=y+2*h+50)
+
+    def render(self):
+        x, y, h = self.x, self.y, self.h
+        t = self.thickness
+
+        d2 = Bolts(2)
+        d3 = Bolts(3)
+
+        self.moveTo(t, t)
+        self.rectangularWall(x, h, "FfeF", bedBolts=[d2])
+        self.moveTo(x+3*t, 0)
+        self.rectangularWall(y, h, "FfeF", bedBolts=[d3])
+        self.moveTo(-x-3*t, h+3*t)
+
+        self.rectangularWall(x, h, "FfeF", bedBolts=[d2])
+        self.moveTo(x+3*t, 0)
+        self.rectangularWall(y, h, "FfeF", bedBolts=[d3])
+        self.moveTo(-x-2*t, h+5*t)
+        
+        self.rectangularWall(x, y, "ffff", bedBolts=[d2, d3, d2, d3])
+
+        self.ctx.stroke()
+        self.surface.flush()
+
+
+b = Box(100, 150, 70)
+b.render()