Mathie

Overview

Mathie is a rust math type library which contains the 3 basic types for doing anything 2D.

• Value A single number value.
• Vec2 A two-dimensional position.
• Rect A two-dimensional area that has an origin and a size.

Math

Doing math with the builtin types is designed to be simple and powerful. All of them support Addition, Subtraction, Multiplication, Division and Remainder.

fn add() {
    assert_eq!(Vec2D::new(0.5, 0.5) + Vec2D::new(1.0, 1.0), Vec2D::new(1.5, 1.5));
    assert_eq!(Vec2D::new(0.5, 0.5) + 1.0,                  Vec2D::new(1.5, 1.5));
}

Units

This library runs on the optional concept of units which may be sized and are designed to be easily converted between without thinking about it.

fn cm_to_m() {
    let v0 = Vec2D::<f32, Centimeter>::new_def(250.0, 250.0);
    // () is base unit. In all cases its Meter
    let v1 = v0.convert_def::<()>().unwrap();
    assert_eq!(v1, Vec2D::new_def(2.5, 2.5));
}

There are builtin units that are optional.

• metric_units 20 Metric prefixes
• imperial_units 10 Imperial prefixes
• nautical_units Nautical mile

Compatibility

This library has optional features for compatibility between other math type libraries like euclid.

fn euclid_compat() {
    let _: Vec2D<f32, ()> = euclid::Vector2D::new(1.0, 1.0).into();
}