Merge pull request #1590 from hannobraun/math

Make various improvements to `fj-math`

crates/fj-math/src/line.rs

@@ -115,6 +115,7 @@ impl<const D: usize> Line<D> {
     /// Create a new instance that is reversed
     #[must_use]
     pub fn reverse(mut self) -> Self {
+        self.origin += self.direction;
         self.direction = -self.direction;
         self
     }

crates/fj-math/src/point.rs

@@ -164,6 +164,15 @@ where
     }
 }
 
+impl<V, const D: usize> ops::AddAssign<V> for Point<D>
+where
+    V: Into<Vector<D>>,
+{
+    fn add_assign(&mut self, rhs: V) {
+        *self = *self + rhs;
+    }
+}
+
 impl<V, const D: usize> ops::Sub<V> for Point<D>
 where
     V: Into<Vector<D>>,

crates/fj-math/src/vector.rs

@@ -323,6 +323,15 @@ where
     }
 }
 
+impl<S, const D: usize> ops::MulAssign<S> for Vector<D>
+where
+    S: Into<Scalar>,
+{
+    fn mul_assign(&mut self, rhs: S) {
+        *self = *self * rhs;
+    }
+}
+
 impl<S, const D: usize> ops::Div<S> for Vector<D>
 where
     S: Into<Scalar>,