1 files changed, 2 insertions, 2 deletions
diff --git a/src/math/surface.rs b/src/math/surface.rs
index 088ac47..21c3865 100644
--- a/src/math/surface.rs
+++ b/src/math/surface.rs
@@ -2,7 +2,7 @@
 
 use super::{LineSegment, Polygon, Rect, Vec2};
 use float_cmp::ApproxEq;
-use nalgebra::RealField;
+use nalgebra::{RealField, Scalar};
 
 /// Trait that describes an area in the vector space on the field of T, with T unable to be
 /// used without rounding.
@@ -28,7 +28,7 @@ where
 }
 
 /// The same as Surface, but the vector space will be assumed to be perfectly divideable or checkable.
-pub trait ExactSurface<T: RealField> {
+pub trait ExactSurface<T: Scalar + Copy> {
     /// Checks if a point lies on this surface.
     fn contains_point(&self, point: &Vec2<T>) -> bool;