Make everything generic

src/geometry.rs

@@ -1,39 +1,39 @@
 use crate::math::{Point3, Vector3};
 
-pub struct Plane {
-    point: Point3,
-    normal: Vector3,
+pub struct Plane<T> {
+    point: Point3<T>,
+    normal: Vector3<T>,
 }
 
-impl Plane {
-    pub fn new(point: Point3, normal: Vector3) -> Plane {
+impl<T> Plane<T> {
+    pub fn new(point: Point3<T>, normal: Vector3<T>) -> Plane<T> {
         Plane { point, normal }
     }
 }
 
-pub struct Line {
-    point: Point3,
-    direction: Vector3,
+pub struct Line<T> {
+    point: Point3<T>,
+    direction: Vector3<T>,
 }
 
-pub struct Sphere {
-    point: Point3,
-    radius: f64,
+pub struct Sphere<T> {
+    point: Point3<T>,
+    radius: T,
 }
 
-impl Sphere {
-    pub fn new(point: Point3, radius: f64) -> Sphere {
+impl<T> Sphere<T> {
+    pub fn new(point: Point3<T>, radius: T) -> Sphere<T> {
         Sphere { point, radius }
     }
 }
 
-pub enum Geometry {
-    Sphere(Sphere),
-    Plane(Plane),
-    Line(Line),
+pub enum Geometry<T> {
+    Sphere(Sphere<T>),
+    Plane(Plane<T>),
+    Line(Line<T>),
 }
 
-impl Geometry {
+impl<T> Geometry<T> {
     pub fn draw(&self) {
         match self {
             Geometry::Sphere(_) => {

src/main.rs

@@ -42,14 +42,18 @@ impl Texture<f64> {
     }
 }
 
-struct RenderableGeometry {
+struct RenderableGeometry<T> {
     transform: Mat4x4,
-    geometry: Geometry,
+    geometry: Geometry<T>,
     texture: Rc<Texture<f64>>,
 }
 
-impl RenderableGeometry {
-    fn new(transform: Mat4x4, geometry: Geometry, texture: Rc<Texture<f64>>) -> RenderableGeometry {
+impl<T> RenderableGeometry<T> {
+    fn new(
+        transform: Mat4x4,
+        geometry: Geometry<T>,
+        texture: Rc<Texture<f64>>,
+    ) -> RenderableGeometry<T> {
         RenderableGeometry {
             transform,
             geometry,
@@ -62,19 +66,19 @@ trait Renderable {
     fn render(&self);
 }
 
-impl Renderable for Sphere {
+impl<T> Renderable for Sphere<T> {
     fn render(&self) {
         println!("Rendering Sphere!");
     }
 }
 
-impl Renderable for Plane {
+impl<T> Renderable for Plane<T> {
     fn render(&self) {
         println!("Rendering Plane!");
     }
 }
 
-impl Renderable for Line {
+impl<T> Renderable for Line<T> {
     fn render(&self) {
         println!("Rendering Line!");
     }

src/math.rs

@@ -78,30 +78,36 @@ where
 }
 
 #[derive(Copy, Clone, PartialEq, Debug)]
-pub struct Point3 {
-    x: f64,
-    y: f64,
-    z: f64,
+pub struct Point3<T> {
+    x: T,
+    y: T,
+    z: T,
 }
 
-impl Point3 {
-    pub fn new(x: f64, y: f64, z: f64) -> Point3 {
+impl<T> Point3<T> {
+    pub fn new(x: T, y: T, z: T) -> Point3<T> {
         Point3 { x, y, z }
     }
 }
 
-impl Add<Vector3<T>> for Point3 {
-    type Output = Point3;
+impl<T> Add<Vector3<T>> for Point3<T>
+where
+    T: Add<Output = T>,
+{
+    type Output = Point3<T>;
 
     fn add(self, rhs: Vector3<T>) -> Self::Output {
         Point3::new(self.x + rhs.x, self.y + rhs.y, self.z + rhs.z)
     }
 }
 
-impl Sub for Point3 {
+impl<T> Sub for Point3<T>
+where
+    T: Sub<Output = T>,
+{
     type Output = Vector3<T>;
 
-    fn sub(self, rhs: Point3) -> Self::Output {
+    fn sub(self, rhs: Point3<T>) -> Self::Output {
         Vector3::new(self.x - rhs.x, self.y - rhs.y, self.z - rhs.z)
     }
 }