Add polygon graph

1 files changed, 8 insertions, 0 deletions

diff --git a/src/math/line_segment.rs b/src/math/line_segment.rs
index 7dacf54..1c2c01c 100644
--- a/src/math/line_segment.rs
+++ b/src/math/line_segment.rs
@@ -126,6 +126,14 @@ impl<T: Scalar + Copy> LineSegment<T> {
             }
         }
     }
+
+    /// Checks if this line segment and the other line segment are the same, ignoring the direction
+    /// in which the lines are going, in other words, which of the vectors the line starts at and which
+    /// vector the line ends at is irrelevant.
+    pub fn eq_ignore_dir(&self, other: &LineSegment<T>) -> bool {
+        (self.start == other.start && self.end == other.end)
+            || (self.end == other.start && self.start == other.end)
+    }
 }
 
 #[derive(PartialEq, Eq)]