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use piston_window::grid::Grid;
use piston_window::*;
use sdl2_window::Sdl2Window;
pub const BLACK: [f32; 4] = [0.0, 0.0, 0.0, 0.8];
fn main() {
let mut window: PistonWindow<Sdl2Window> = WindowSettings::new("Hello there!", [1000, 1000])
.build()
.expect("Could not initialise window");
let mut pixels_per_m = 64.;
let grid_line = Line::new(BLACK, 1.5);
let mut events = Events::new(EventSettings::new().lazy(true));
while let Some(e) = events.next(&mut window) {
e.mouse_scroll(|[_, y]| {
if y < 0. {
pixels_per_m *= 1.2;
} else if y > 0. {
pixels_per_m /= 1.2;
}
});
if let Some(Button::Keyboard(Key::Escape)) = e.press_args() {
window.set_should_close(true);
}
let win_size = window.draw_size();
let grid = Grid {
cols: (win_size.width / pixels_per_m) as u32 + 1,
rows: (win_size.height / pixels_per_m) as u32 + 1,
units: pixels_per_m,
};
window.draw_2d(&e, |c, g, _device| {
clear([1.0; 4], g);
grid.draw(&grid_line, &c.draw_state, c.transform, g);
});
}
}
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