interpolated 0.1.2

Generic, smooth value interpolation and easing functions for Rust.
Documentation 
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#[derive(Clone, Copy, Debug, PartialEq)]
struct Vec2 {
    x: f32,
    y: f32,
}

impl Vec2 {
    fn new(x: f32, y: f32) -> Self {
        Self { x, y }
    }
}

use std::ops::{Add, Sub, Mul};
use std::time::Duration;
use interpolated::{ease_out_elastic, Interpolated};

impl Add for Vec2 {
    type Output = Vec2;
    fn add(self, rhs: Vec2) -> Vec2 {
        Vec2 { x: self.x + rhs.x, y: self.y + rhs.y }
    }
}

impl Sub for Vec2 {
    type Output = Vec2;
    fn sub(self, rhs: Vec2) -> Vec2 {
        Vec2 { x: self.x - rhs.x, y: self.y - rhs.y }
    }
}

impl Mul<f32> for Vec2 {
    type Output = Vec2;
    fn mul(self, rhs: f32) -> Vec2 {
        Vec2 { x: self.x * rhs, y: self.y * rhs }
    }
}

fn main() {
    let mut pos = Interpolated::new(Vec2::new(0.0, 0.0));
    pos.set_duration(Duration::from_secs_f32(1.25));
    pos.transition = ease_out_elastic;
    // or: pos.transition = linear;
    pos.set(Vec2::new(200.0, 50.0));
    while !pos.is_finished() {
        let v = pos.value();
        println!("pos = {{ x: {:.2}, y: {:.2} }}", v.x, v.y);
        std::thread::sleep(Duration::from_millis(100));
    }
    println!("done at {{ x: {:.2}, y: {:.2} }}", pos.value().x, pos.value().y);
}