Changed to f64 floating point

src/light.rs

@@ -2,20 +2,20 @@ use nalgebra::{Point3, Vector3};
 
 #[derive(Clone)]
 pub struct Light {
-    pub position: Point3<f32>,
-    pub colour: Vector3<f32>,
-    pub falloff: Vector3<f32>,
+    pub position: Point3<f64>,
+    pub colour: Vector3<f64>,
+    pub falloff: Vector3<f64>,
 }
 
 impl Light {
-    pub fn new(position: Point3<f32>, colour: Vector3<f32>, falloff: Vector3<f32>) -> Self {
+    pub fn new(position: Point3<f64>, colour: Vector3<f64>, falloff: Vector3<f64>) -> Self {
         Light {
             position,
             colour,
             falloff,
         }
     }
-    pub fn white(position: Point3<f32>) -> Self {
+    pub fn white(position: Point3<f64>) -> Self {
         let colour = Vector3::new(1.0, 1.0, 1.0);
         let falloff = Vector3::new(1.0, 0.0, 0.0);
         Light::new(position, colour, falloff)