Tuple point and vector take any time

.vscode/launch.json

@@ -0,0 +1,45 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "type": "lldb",
+            "request": "launch",
+            "name": "Debug executable 'ray-tracer'",
+            "cargo": {
+                "args": [
+                    "build",
+                    "--bin=ray-tracer",
+                    "--package=ray-tracer"
+                ],
+                "filter": {
+                    "name": "ray-tracer",
+                    "kind": "bin"
+                }
+            },
+            "args": [],
+            "cwd": "${workspaceFolder}"
+        },
+        {
+            "type": "lldb",
+            "request": "launch",
+            "name": "Debug unit tests in executable 'ray-tracer'",
+            "cargo": {
+                "args": [
+                    "test",
+                    "--no-run",
+                    "--bin=ray-tracer",
+                    "--package=ray-tracer"
+                ],
+                "filter": {
+                    "name": "ray-tracer",
+                    "kind": "bin"
+                }
+            },
+            "args": [],
+            "cwd": "${workspaceFolder}"
+        }
+    ]
+}

Cargo.lock

@@ -22,6 +22,7 @@ name = "features"
 version = "0.1.0"
 dependencies = [
  "approx",
+ "num-traits",
 ]
 
 [[package]]

features/Cargo.lock

@@ -22,6 +22,7 @@ name = "features"
 version = "0.1.0"
 dependencies = [
  "approx",
+ "num-traits",
 ]
 
 [[package]]

features/Cargo.toml

@@ -7,3 +7,4 @@ edition = "2018"
 
 [dependencies]
 approx = "0.5"
+num-traits = "0.2"

features/src/lib.rs

@@ -1,5 +1,6 @@
 #[macro_use]
 extern crate approx;
+extern crate num_traits;
 
 pub mod structs;
 pub mod color;

features/src/structs.rs

@@ -1,6 +1,9 @@
 use std::fmt;
 use std::ops;
 
+use num_traits::NumCast;
+use num_traits::cast;
+
 #[derive(Debug, Copy, Clone)]
 pub struct Tuple {
     x: f32,
@@ -9,13 +12,24 @@ pub struct Tuple {
     w: f32,
 }
 
+macro_rules! num_traits_cast {
+    ($tt:ident) => {
+        cast($tt).unwrap()
+    };
+}
+
 impl Tuple {
-    pub fn new(x: f32, y: f32, z: f32, w: f32) -> Tuple {
+    pub fn new<X, Y, Z, W>(x: X, y: Y, z: Z, w: W) -> Tuple
+    where X: NumCast,
+    Y: NumCast,
+    Z: NumCast,
+    W: NumCast,
+     {
         Tuple {
-            x,
+            x: num_traits_cast!(x),
-            y,
+            y: num_traits_cast!(y),
-            z,
+            z: num_traits_cast!(z),
-            w,
+            w: num_traits_cast!(w),
         }
     }
 
@@ -28,20 +42,28 @@ impl Tuple {
         }
     }
 
-    pub fn point(x: f32, y: f32, z: f32) -> Tuple {
+    pub fn point<T, U, V>(x: T, y: U, z: V) -> Tuple
+    where T: NumCast,
+    U: NumCast,
+    V: NumCast,
+
+     {
         Tuple {
-            x,
+            x: num_traits_cast!(x),
-            y,
+            y: num_traits_cast!(y),
-            z,
+            z: num_traits_cast!(z),
             w: 1.0,
         }
     }
 
-    pub fn vector(x: f32, y: f32, z: f32) -> Tuple {
+    pub fn vector<X, Y, Z>(x: X, y: Y, z: Z) -> Tuple
+    where X: NumCast,
+    Y: NumCast,
+    Z: NumCast {
         Tuple {
-            x,
+            x: num_traits_cast!(x),
-            y,
+            y: num_traits_cast!(y),
-            z,
+            z: num_traits_cast!(z),
             w: 0.0,
         }
     }
@@ -424,4 +446,39 @@ mod tests {
          let b_cross_a = Tuple::vector(1.0, -2.0, 1.0);
          assert_eq!(b_cross_a, b.cross(&a));
      }
+
+     #[test]
+     fn works_with_i32() {
+         let a = Tuple::new(1, 2, 3, 0);
+         assert_eq!(1.0, a.x());
+         assert_eq!(2.0, a.y());
+         assert_eq!(3.0, a.z());
+     }
+
+     #[test]
+     fn works_with_mixed_types() {
+         let a = Tuple::new(1.1, 2.2, 3, 0);
+         assert_eq!(1.1, a.x());
+         assert_eq!(2.2, a.y());
+         assert_eq!(3.0, a.z());
+     }
+
+     #[test]
+     fn point_with_mixed_types() {
+         let a = Tuple::point(1.0, 2.2, 3);
+         assert_eq!(1.0, a.x());
+         assert_eq!(2.2, a.y());
+         assert_eq!(3.0, a.z());
+         assert_eq!(1.0, a.w());
+     }
+
+     #[test]
+     fn vector_with_mixed_types() {
+         let a = Tuple::vector(1.0, 2.2, 3);
+         assert_eq!(1.0, a.x());
+         assert_eq!(2.2, a.y());
+         assert_eq!(3.0, a.z());
+         assert_eq!(0.0, a.w());
+
+     }
 }

src/main.rs

@@ -175,7 +175,7 @@ fn clock() {
     let mut canvas = Canvas::new(1024, 1024);
     let color = Color::new(1.0, 0.0, 0.0);
     let middle = 1024.0 / 2.0;
-    canvas.write_pixel(middle as usize, middle as usize, Color::new(0.0, 1.0, 0.0));
+
     let middle_point = &Tuple::point_zero() * &Matrix::translation(middle, middle, 0.0);
     draw_cross(&mut canvas, &middle_point, Color::new(0.0, 1.0, 0.0));