From 76ab78d565a3480ba82238da3aae629df7633f14 Mon Sep 17 00:00:00 2001
From: Weird Constructor <weirdconstructor@gmail.com>
Date: Sun, 25 Jul 2021 15:53:51 +0200
Subject: [PATCH] Added function for flipping CellDir directions

---
 src/cell_dir.rs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/cell_dir.rs b/src/cell_dir.rs
index 9e08bc9..cecbc4b 100644
--- a/src/cell_dir.rs
+++ b/src/cell_dir.rs
@@ -27,6 +27,18 @@ impl CellDir {
         }
     }
 
+    pub fn flip(&self) -> Self {
+        match self {
+            CellDir::TR => CellDir::BL,
+            CellDir::BR => CellDir::TL,
+            CellDir::B  => CellDir::T,
+            CellDir::BL => CellDir::TR,
+            CellDir::TL => CellDir::BR,
+            CellDir::T  => CellDir::B,
+            CellDir::C  => CellDir::T,
+        }
+    }
+
     #[inline]
     pub fn is_output(&self) -> bool {
         let e = self.as_edge();