sfml 0.20.0

Rust binding for sfml
Documentation 
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use sfml::{
    graphics::{Color, CustomShape, CustomShapePoints, RenderTarget, RenderWindow, Shape},
    system::Vector2f,
    window::{Event, Key, Style},
};

#[derive(Clone, Copy)]
pub struct TriangleShape;

impl CustomShapePoints for TriangleShape {
    fn point_count(&self) -> usize {
        3
    }

    fn point(&self, point: usize) -> Vector2f {
        match point {
            0 => Vector2f { x: 20., y: 580. },
            1 => Vector2f { x: 400., y: 20. },
            2 => Vector2f { x: 780., y: 580. },
            p => panic!("Non-existent point: {p}"),
        }
    }
}

fn main() {
    let mut window = RenderWindow::new(
        (800, 600),
        "Custom shape",
        Style::CLOSE,
        &Default::default(),
    );
    window.set_vertical_sync_enabled(true);

    let mut shape = CustomShape::new(Box::new(TriangleShape));
    shape.set_fill_color(Color::RED);
    shape.set_outline_color(Color::GREEN);
    shape.set_outline_thickness(3.);

    loop {
        while let Some(event) = window.poll_event() {
            match event {
                Event::Closed
                | Event::KeyPressed {
                    code: Key::Escape, ..
                } => return,
                _ => {}
            }
        }

        window.clear(Color::BLACK);
        window.draw(&shape);
        window.display();
    }
}