now with the main loop

Cargo.lock

@@ -885,6 +885,7 @@ name = "gears"
 version = "0.1.0"
 dependencies = [
  "flo_draw",
+ "futures",
  "glam",
 ]
 

Cargo.toml

@@ -5,4 +5,5 @@ edition = "2024"
 
 [dependencies]
 flo_draw = "0.3.1"
+futures = "0.3.31"
 glam = "0.30.5"

src/main.rs

@@ -1,9 +1,14 @@
-use std::f32::consts::PI;
+use std::{
+	f32::consts::PI,
+	pin::pin,
+	task::{Context, Poll, Waker},
+};
 
 use flo_draw::{
 	canvas::{Color::Rgba, GraphicsContext, GraphicsPrimitives},
-	create_drawing_window, with_2d_graphics,
+	create_drawing_window, create_drawing_window_with_events, with_2d_graphics,
 };
+use futures::{StreamExt, executor, pin_mut};
 use glam::{FloatExt, Mat2, Vec2, vec2};
 
 const fn rad(deg: f32) -> f32 {
@@ -92,7 +97,13 @@ fn main() {
 		let sat = gear_shape(N_TEETH_SAT);
 		let crown = gear_shape_outer(N_TEETH_SKY);
 
-		let canvas = create_drawing_window("Canvas window");
+		let (canvas, mut events) = create_drawing_window_with_events("Canvas window");
+		'main: loop {
+			while let Poll::Ready(event) =
+				events.poll_next_unpin(&mut Context::from_waker(Waker::noop()))
+			{
+				let Some(_event) = event else { break 'main };
+			}
 			canvas.draw(|gc| {
 				gc.clear_canvas(Rgba(0.1, 0.1, 0.1, 1.0));
 
@@ -100,7 +111,7 @@ fn main() {
 				gc.line_width(0.25);
 
 				gc.new_path();
-			for pt in sun {
+				for pt in &sun {
 					let pt = R_SUN * pt;
 					gc.line_to(pt.x, pt.y);
 				}
@@ -121,7 +132,7 @@ fn main() {
 				}
 
 				gc.new_path();
-			for pt in crown {
+				for pt in &crown {
 					let pt = R_SKY * pt;
 					gc.line_to(pt.x, pt.y);
 				}
@@ -129,5 +140,6 @@ fn main() {
 				gc.stroke_color(Rgba(0.1, 0.4, 0.8, 1.0));
 				gc.stroke();
 			});
+		}
 	});
 }