Fix roll joint collision detection

Switch to a simpler check between the min amd max coordinates in each of
the 3 dimensions.

Signed-off-by: milind-u <milind.upadhyay@gmail.com>
Change-Id: Ib7fb98aa7812ae4fae3d9e8795aa2ecfe56ea8f9
diff --git a/y2023/control_loops/python/graph_edit.py b/y2023/control_loops/python/graph_edit.py
index 689401a..9340d1a 100644
--- a/y2023/control_loops/python/graph_edit.py
+++ b/y2023/control_loops/python/graph_edit.py
@@ -439,6 +439,7 @@
         elif keyval == Gdk.KEY_k:
             self.index += 1
             self.index = self.index % len(self.segments)
+            print("Switched to segment:", self.segments[self.index].name)
 
         elif keyval == Gdk.KEY_t:
             # Toggle between theta and xy renderings