style: stop renaming external crate

src/camera.rs

@@ -1,7 +1,5 @@
-extern crate nalgebra as na;
-
-use na::geometry::{Point2, Point3};
-use na::*;
+use nalgebra::geometry::{Point2, Point3};
+use nalgebra::*;
 
 use crate::util::Ray;
 

src/main.rs

@@ -1,10 +1,8 @@
-extern crate nalgebra as na;
-
 use std::fs::File;
 use std::io::Write;
 use std::time::Instant;
 
-use na::*;
+use nalgebra::*;
 
 mod camera;
 use camera::*;

src/object/bound.rs

@@ -1,7 +1,5 @@
-extern crate nalgebra as na;
-
 // use na::distance;
-use na::geometry::Point3;
+use nalgebra::geometry::Point3;
 
 use crate::util::*;
 

src/object/plane.rs

@@ -1,7 +1,5 @@
-extern crate nalgebra as na;
-
-use na::geometry::Point3;
-use na::*;
+use nalgebra::geometry::Point3;
+use nalgebra::*;
 
 use super::{bound::*, Surface};
 use crate::util::*;

src/object/point_light.rs

@@ -1,6 +1,4 @@
-extern crate nalgebra as na;
-
-use na::*;
+use nalgebra::*;
 
 use super::*;
 use crate::util::*;

src/object/sphere.rs

@@ -1,9 +1,7 @@
-extern crate nalgebra as na;
-
 use std::f64::consts::PI;
 
-use na::geometry::Point3;
-use na::*;
+use nalgebra::geometry::Point3;
+use nalgebra::*;
 
 use super::{bound::*, Surface};
 use crate::util::*;

src/object/triangle.rs

@@ -1,9 +1,7 @@
-extern crate nalgebra as na;
-
 use std::cmp::Ordering;
 
-use na::geometry::Point3;
-use na::*;
+use nalgebra::geometry::Point3;
+use nalgebra::*;
 
 use super::{bound::*, Surface};
 use crate::util::*;

src/render.rs

@@ -1,5 +1,3 @@
-extern crate nalgebra as na;
-
 use std::cmp::Ordering;
 use std::f64::consts::PI;
 

src/util.rs

@@ -1,9 +1,7 @@
-extern crate nalgebra as na;
-
 use std::ops::{Add, Mul};
 
-use na::geometry::Point3;
-use na::*;
+use nalgebra::geometry::Point3;
+use nalgebra::*;
 
 pub type Point3f = Point3<f64>;
 pub type Vector3f = Vector3<f64>;