This can display poses from the robot

ch-13/2-displaying-a-pose/robot/arena.py

@@ -0,0 +1,46 @@
+"""Represent the lines and target zone of the arena"""
+
+
+boundary_lines = [
+    [(0,0), (0, 1500)],
+    [(0, 1500), (1500, 1500)],
+    [(1500, 1500), (1500, 500)],
+    [(1500, 500), (1000, 500)],
+    [(1000, 500), (1000, 0)],
+    [(1000, 0), (0, 0)],
+]
+
+
+target_zone = [
+  [(1100, 900), (1100, 1100)],
+  [(1100, 1100), (1250, 1100)],
+  [(1250, 1100), (1250, 900)],
+  [(1250, 900), (1100, 900)],
+]
+
+width = 1500
+height = 1500
+
+def point_is_inside_arena(point):
+  """Return True if the point is inside the arena"""
+  # cheat a little, the arena is a rectangle, with a cutout.
+  # if the point is inside the rectangle, but not inside the cutout, it's inside the arena.
+  # this is far simpler than any line intersection method.
+  
+  # is it inside the rectangle?
+  if point[0] < 0 or point[0] > width \
+    or point[1] < 0 or point[1] > height:
+    return False
+  # is it inside the cutout?
+  if point[0] > 1000 and point[1] < 500:
+    return False
+  return True
+
+def point_is_inside_target_zone(point):
+  """Return True if the point is inside the target zone"""
+  # cheat a little, the target zone is a rectangle.
+  # if the point is inside the rectangle, it's inside the target zone.
+  if point[0] < 1100 or point[0] > 1250 \
+    or point[1] < 900 or point[1] > 1100:
+    return False
+  return True