add clock and bezier example

turtle-lib/examples/clock.rs

@@ -0,0 +1,91 @@
+//! Animated clock example
+//!
+//! This example draws an animated clock that shows the current time.
+//! The clock updates every second to reflect the actual time.
+
+use chrono::{Local, Timelike};
+use macroquad::prelude::{clear_background, is_key_pressed, next_frame, KeyCode, WHITE};
+use turtle_lib::{create_turtle_plan, vec2, DirectionalMovement, Turnable, TurtleApp};
+
+#[macroquad::main("Clock")]
+async fn main() {
+    const HOURS: i32 = 12;
+    const MINUTES: f32 = 60.0;
+    const SECONDS: f32 = 60.0;
+    const FULL_CIRCLE: f32 = 360.0;
+
+    let mut app = TurtleApp::new();
+    let mut last_update = Local::now();
+
+    loop {
+        clear_background(WHITE);
+
+        let now = Local::now();
+
+        // Only redraw when the time changes
+        if now.second() != last_update.second() {
+            let mut turtle = create_turtle_plan();
+            turtle.reset().set_speed(1100).left(90.0); // Instant mode for smooth updates
+
+            // Draw the clock circle and hour markers
+            for i in 1..=HOURS {
+                turtle
+                    .pen_up()
+                    .go_to(vec2(0.0, 0.0))
+                    .right(FULL_CIRCLE / HOURS as f32)
+                    .forward(205.0);
+
+                let pen_size = if (i) % 3 == 0 { 7.0 } else { 2.0 };
+                turtle
+                    .set_pen_width(pen_size)
+                    .pen_down()
+                    .forward(10.0)
+                    .right(90.0)
+                    .write_text(format!("{i}"), 2 * pen_size as i32 + 10)
+                    .left(90.0);
+            }
+
+            // Draw the hour hand
+            turtle
+                .pen_up()
+                .go_to(vec2(0.0, 0.0))
+                .set_heading(90.0)
+                .right(FULL_CIRCLE / HOURS as f32 * (now.hour() % 12) as f32)
+                .set_pen_width(5.0)
+                .pen_down()
+                .forward(120.0);
+
+            // Draw the minute hand
+            turtle
+                .pen_up()
+                .go_to(vec2(0.0, 0.0))
+                .set_heading(90.0)
+                .right(FULL_CIRCLE / MINUTES * now.minute() as f32)
+                .set_pen_width(3.0)
+                .pen_down()
+                .forward(150.0);
+
+            // Draw the second hand
+            turtle
+                .pen_up()
+                .go_to(vec2(0.0, 0.0))
+                .set_heading(90.0)
+                .right(FULL_CIRCLE / SECONDS * now.second() as f32)
+                .set_pen_width(1.0)
+                .pen_down()
+                .forward(180.0);
+
+            app = TurtleApp::new().with_commands(turtle.build());
+            last_update = now;
+        }
+
+        app.update();
+        app.render();
+
+        if is_key_pressed(KeyCode::Escape) || is_key_pressed(KeyCode::Q) {
+            break;
+        }
+
+        next_frame().await;
+    }
+}