Change to f64 as the preferred floating point number

1 files changed, 7 insertions, 3 deletions

diff --git a/src/math/mod.rs b/src/math/mod.rs
index b84d270..279affc 100644
--- a/src/math/mod.rs
+++ b/src/math/mod.rs
@@ -11,6 +11,7 @@ pub use self::triangle::*;
 pub use self::vec2::*;
 
 use nalgebra::Scalar;
+use num_traits::Float;
 use std::cmp::Ordering;
 
 /// Trait that describes an area in the vector space on the field of T
@@ -31,11 +32,14 @@ pub trait Surface<T: Scalar + Copy> {
 /// 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.
-pub fn round(num: f32, step: f32) -> f32 {
+pub fn round<T>(num: T, step: T) -> T
+where
+    T: Float,
+{
     // Only positive steps will be accepted.
-    assert!(step > 0.);
+    assert!(step > T::zero());
 
-    let lower_bound = ((num / step) as i32) as f32 * step;
+    let lower_bound = (num / step).floor() * step;
     let upper_bound = lower_bound + step;
 
     // Compare the distances and prefer the smaller. If they are the same, prefer the upper bound.