Move containment of points/ lines into trait

1 files changed, 10 insertions, 0 deletions

diff --git a/src/math/mod.rs b/src/math/mod.rs
index e72a7a4..6f83c98 100644
--- a/src/math/mod.rs
+++ b/src/math/mod.rs
@@ -10,8 +10,18 @@ pub use self::rect::*;
 pub use self::triangle::*;
 pub use self::vec2::*;
 
+use nalgebra::Scalar;
 use std::cmp::Ordering;
 
+/// Trait that describes an area in the vector space on the field of T
+pub trait Surface<T: Scalar + Copy> {
+    /// Checks if a point lies on this surface.
+    fn contains_point(&self, point: &Vec2<T>) -> bool;
+
+    /// Checks if a line segment is entirely contained by this surface.
+    fn contains_line_segment(&self, line_segment: &LineSegment<T>) -> bool;
+}
+
 /// Round a floating point number to the nearest step given by the step argument. For instance, if
 /// the step is 0.5, then all numbers from 0.0 to 0.24999... will be 0., while all numbers from
 /// 0.25 to 0.74999... will be 0.5 and so on.