Merged changes in close()

cadquery/cq.py

@@ -1874,7 +1874,14 @@ class Workplane(CQ):
 
             s = Workplane().lineTo(1,0).lineTo(1,1).close().extrude(0.2)
         """
-        self.lineTo(self.ctx.firstPoint.x, self.ctx.firstPoint.y)
+        endPoint = self._findFromPoint(True)
+        startPoint = self.ctx.firstPoint
+
+        # Check if there is a distance between startPoint and endPoint
+        # that is larger than what is considered a numerical error.
+        # If so; add a line segment between endPoint and startPoint
+        if endPoint.sub(startPoint).Length > 1e-6:
+            self.lineTo(self.ctx.firstPoint.x, self.ctx.firstPoint.y)
 
         # Need to reset the first point after closing a wire
         self.ctx.firstPoint = None