point/examples/mathmatics.rs

use point::Point;

fn main() {
    // Defining 2 Points
    let p: Point<i32> = Point::from((3_i32, 2));
    let p1: Point<i32> = Point::from((1_i32, 2));
    //            ^
    //            Both are i32

    // Use a number to add to both x and y
    let p2 = p.clone() + 1;
    //                      ^
    //                      Clone is needed because + operator takes ownership
    //                      (So we'd lose access to p)
    assert_eq!(p2.x, 4, "p2.x = {} (expected 4)", p2.x);
    assert_eq!(p2.y, 3, "p2.y = {} (expected 3)", p2.y);

    // Or use a tuple of 2 numbers to add to x and y respectively
    let p3 = p1.clone() + (1, 2);
    assert_eq!(p3.x, 2, "p3.x = {} (expected 2)", p3.x);
    assert_eq!(p3.y, 4, "p3.y = {} (expected 4)", p3.y);

    // Let's clone p so we can manipulate it directly
    let mut p4 = p.clone();
    p4 += 2; // Change p4 directly (Clone it if you don't want to modify it directly)
    assert_eq!(p4.x, 5, "p4.x = {} (expected 5)", p4.x);
    assert_eq!(p4.y, 4, "p4.y = {} (expected 4)", p4.y);

    let mut p4 = p1.clone();
    p4 += (-1, 0); // Because it's i32, we can use negative to subtract (or just use -= operator)
    assert_eq!(p4.x, 0, "p4.x = {} (expected 0)", p4.x);
    assert_eq!(p4.y, 2, "p4.y = {} (expected 2)", p4.y);

    // Operators that return a new Point
    // Add +
    // Sub -
    // Mul *
    // Div /
    // Rem %
    // Operators that modify their Point (modifies self)
    // AddAssign +=
    // SubAssign -=
    // MulAssign *=
    // DivAssign /=
    // RemAssign %=
}