Reworked the core examples to exclude contributed examples.

examples/Ex011_Mirroring_Symmetric_Geometry.py

@@ -0,0 +1,20 @@
+import cadquery as cq
+
+# 1.  Establishes a workplane that an object can be built on.
+# 1a. Uses the named plane orientation "front" to define the workplane, meaning
+#     that the positive Z direction is "up", and the negative Z direction
+#     is "down".
+# 2.  A horizontal line is drawn on the workplane with the hLine function.
+# 2a. 1.0 is the distance, not coordinate. hLineTo allows using xCoordinate
+#     not distance.
+r = cq.Workplane("front").hLine(1.0)
+
+# 3.  Draw a series of vertical and horizontal lines with the vLine and hLine
+#     functions.
+r = r.vLine(0.5).hLine(-0.25).vLine(-0.25).hLineTo(0.0)
+
+# 4.  Mirror the geometry about the Y axis and extrude it into a 3D object.
+result = r.mirrorY().extrude(0.25)
+
+# Displays the result of this script
+show_object(result)