Piston - Nearest point interpolation

main.rs

extern crate piston_window;
extern crate find_folder;
extern crate graphics;

use piston_window::*;
use graphics::rectangle::square;
use std::default::Default;

fn main() {
    println!("Hello, world!");

    let assets = find_folder::Search::ParentsThenKids(3, 3)
        .for_folder("assets").unwrap();

    let mut window: PistonWindow = 
        WindowSettings::new("Hello Piston!", [64, 48])
        .exit_on_esc(true)
        .build()
        .unwrap();

    let texture_settings = TextureSettings::new()
        .filter(piston_window::texture::Filter::Nearest);
    let texture = Texture::from_path(
        &mut window.factory,
        &(assets.join("sprite.png")),
        Flip::None,
        &texture_settings
    ).unwrap_or_else(|e| { panic!("Failed to load assets: {}", e) });
    let image= Image::new()
        .rect(square(0.0, 0.0, 40.0));

    let mut events = window.events();
    while let Some(e) = events.next(&mut window) {
        if let Some(_r) = e.render_args() {
            window.draw_2d(&e, |c, g| {
                clear([0.75; 4], g);
                image.draw(&texture, &Default::default(), c.zoom(4.).transform, g);
            });
        }
    }
}