Merge pull request #2113 from hannobraun/winding

Add convenience methods for `Winding`

crates/fj-math/src/triangle.rs

@@ -132,10 +132,23 @@ pub struct NotATriangle<const D: usize> {
 pub enum Winding {
     /// Counter-clockwise
     Ccw,
+
     /// Clockwise
     Cw,
 }
 
+impl Winding {
+    /// Indicate whether the winding is counter-clockwise
+    pub fn is_ccw(&self) -> bool {
+        matches!(self, Self::Ccw)
+    }
+
+    /// Indicate whether the winding is clockwise
+    pub fn is_cw(&self) -> bool {
+        matches!(self, Self::Cw)
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use crate::{Point, Vector};