Make a start

.gitignore

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+/target
+**/*.rs.bk

Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "rust_prog2_tut2"
+version = "0.1.0"
+

Cargo.toml

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+[package]
+name = "rust_prog2_tut2"
+version = "0.1.0"
+authors = ["expectocode <expectocode@gmail.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

src/geometry.rs

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+use std::ops::Add;
+
+#[derive(Debug, Copy, Clone)]
+pub struct Point {
+    x: u32,
+    y: u32,
+}
+
+#[derive(Debug, Copy, Clone)]
+pub struct Rectangle {
+    x: u32,
+    y: u32,
+    width: u32,
+    height: u32,
+}
+
+impl Point {
+    pub fn new(x: u32, y: u32) -> Self {
+        Self { x, y }
+    }
+
+    pub fn origin() -> Self {
+        Self { x: 0, y: 0 }
+    }
+
+    pub fn with_x(&mut self, x: u32) -> &mut Self {
+        self.x = x;
+        self
+    }
+
+    pub fn with_y(&mut self, y: u32) -> &mut Self {
+        self.y = y;
+        self
+    }
+
+    pub fn x(&self) -> u32 {
+        self.x
+    }
+
+    pub fn y(&self) -> u32 {
+        self.y
+    }
+
+    pub fn left_of(&self, other: &Self) -> bool {
+        self.x < other.x
+    }
+
+    pub fn right_of(&self, other: &Self) -> bool {
+        self.x > other.x
+    }
+
+    pub fn above(&self, other: &Self) -> bool {
+        self.y < other.y
+    }
+
+    pub fn below(&self, other: &Self) -> bool {
+        self.y > other.y
+    }
+}
+
+impl Add for Point {
+    type Output = Point;
+
+    fn add(self, other: Point) -> Point {
+        Point {
+            x: self.x + other.x,
+            y: self.y + other.y,
+        }
+    }
+}
+
+impl PartialEq for Point {
+    fn eq(&self, other: &Self) -> bool {
+        self.x == other.x && self.y == other.y
+    }
+}
+
+impl Eq for Point {}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_point_get_x() {
+        assert_eq!(Point::new(42, 52).x(), 42);
+    }
+
+    #[test]
+    fn test_point_get_y() {
+        assert_eq!(Point::new(42, 52).y(), 52);
+    }
+
+    #[test]
+    fn test_point_set_x() {
+        assert_eq!(Point::new(42, 52).with_x(12), &Point::new(12, 52));
+    }
+
+    #[test]
+    fn test_point_set_y() {
+        assert_eq!(Point::new(42, 52).with_y(12), &Point::new(42, 12));
+    }
+
+    #[test]
+    fn test_point_left_of() {
+        assert!(Point::new(10, 20).left_of(&Point::new(20, 20)));
+        assert!(!Point::new(10, 11).left_of(&Point::new(10, 11)));
+        assert!(!Point::new(10, 11).left_of(&Point::new(8, 11)));
+    }
+
+    #[test]
+    fn test_point_right_of() {
+        assert!(Point::new(10, 20).right_of(&Point::new(0, 20)));
+        assert!(!Point::new(10, 11).right_of(&Point::new(10, 11)));
+        assert!(!Point::new(10, 11).right_of(&Point::new(12, 11)));
+    }
+
+    #[test]
+    fn test_point_above() {
+        assert!(Point::new(1, 1).above(&Point::new(1, 2)));
+        assert!(!Point::new(10, 11).above(&Point::origin()));
+    }
+
+    #[test]
+    fn test_point_below() {
+        assert!(Point::new(1, 1).below(&Point::new(1, 0)));
+        assert!(!Point::new(10, 11).below(&Point::new(12, 11)));
+    }
+
+    #[test]
+    fn test_point_add() {
+        assert_eq!(Point::new(1, 1) + Point::new(10, 10), Point::new(11, 11));
+        assert_eq!(
+            Point::new(10, 0) + Point::new(0, 10),
+            Point::new(0, 10) + Point::new(10, 0)
+        );
+    }
+}

src/main.rs

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+mod geometry;
+
+fn main() {
+    let p = geometry::Point::new(2, 3);
+    let y = p;
+    dbg!(p + y);
+}