interpolated 0.1.2

Generic, smooth value interpolation and easing functions for Rust.
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# interpolated

Generic, smooth value interpolation and easing functions for Rust.

[![Crates.io](https://img.shields.io/crates/v/interpolated.svg)](https://crates.io/crates/interpolated)
[![Docs.rs](https://docs.rs/interpolated/badge.svg)](https://docs.rs/interpolated)

## Features

- Animate any `T: Copy + Add + Sub + Mul<f32>` over time
- Configurable duration and easing function per interpolation
- Built-in easing functions:
    - `none` (instant jump)
    - `linear`
    - `ease_in_out_expo`
    - `ease_out_back`
    - `ease_in_back`
    - `ease_out_elastic`

## Installation

Add to your `Cargo.toml`:

```toml
[dependencies]
interpolated = "0.1.2"
```

Or via the command line:

```bash
cargo add interpolated
```

## Quick Start

```rust
use interpolated::{Interpolated, ease_out_elastic, linear};
use std::time::Duration;

fn main() {
    // Create an interpolator for f32 values
    let mut interp = Interpolated::new(0.0f32);
    // Animate over 1 second
    interp.set_duration(Duration::from_secs_f32(1.0));
    // Choose easing curve
    interp.transition = ease_out_elastic;
    // Set target value
    interp.set(10.0);

    // In your update loop...
    while !interp.is_finished() {
        let current = interp.value();
        println!("Value: {:.2}", current);
        std::thread::sleep(Duration::from_millis(100));
    }

    // Final value reached
    assert_eq!(interp.value(), 10.0);
}
```

## API Overview

### `struct Interpolated<T>`

- `new(initial: T) -> Self`
- `set_duration(&mut self, duration: Duration)`
- `pub transition: fn(f32) -> f32`
- `set(&mut self, new_end: T)`
- `value(&self) -> T`
- `is_finished(&self) -> bool`

### Easing Functions

```rust
use interpolated::{
    none, linear, ease_in_out_expo,
    ease_out_back, ease_in_back, ease_out_elastic,
};
```

Each function has the signature `fn(f32) -> f32`, mapping `t ∈ [0,1]` to an eased ratio.

For full docs, see https://docs.rs/interpolated

## License

Licensed under:

- MIT license (LICENSE-MIT or https://opensource.org/licenses/MIT)