red dot revolution

src/main.rs

@@ -1,96 +1,76 @@
-use iced::mouse;
+mod polygon_draw;
+use iced::Subscription;
 use iced::widget::canvas;
-use iced::widget::canvas::Stroke;
-use iced::widget::canvas::Style;
-use iced::widget::{button, column, row, text};
-use iced::{Color, Rectangle, Renderer, Theme};
+use iced::widget::{Checkbox, button, checkbox, column, row, text};
+use iced::{
+    Task,
+    time::{self, Duration},
+};
+use polygon_draw::PolygonFrame;
+use std::f32::consts::PI;
+use std::time::Instant;
+use tokio::time::sleep;
 
 fn main() -> iced::Result {
-    iced::run("My App", MyApp::update, MyApp::view)
+    iced::application("My App", MyApp::update, MyApp::view)
+        .subscription(MyApp::subscription)
+        .run_with(MyApp::new)
 }
 
 #[derive(Debug, Clone)]
 enum Message {
     ButtonPressedIncrement,
     ButtonPressedDecrement,
+    Tick,
 }
 
-#[derive(Default)]
 struct MyApp {
-    counter: f32,
+    polys: PolygonFrame,
+    time_last_frame: Instant,
+    revo_per_sec: f32,
 }
 
 impl MyApp {
+    fn new() -> (Self, Task<Message>) {
+        (
+            Self {
+                revo_per_sec: 1.0 / 2.0,
+                time_last_frame: Instant::now(),
+                polys: PolygonFrame {
+                    radius: 128.0,
+                    teta: 0.0,
+                },
+            },
+            Task::none(),
+        )
+    }
     fn update(&mut self, message: Message) {
         match message {
-            Message::ButtonPressedIncrement => self.counter += 32.0,
-            Message::ButtonPressedDecrement => {
-                if self.counter > 0.0 {
-                    self.counter -= 32.0
-                }
+            Message::ButtonPressedIncrement => self.revo_per_sec *= 2.0,
+            Message::ButtonPressedDecrement => self.revo_per_sec /= 2.0,
+            Message::Tick => {
+                let time_btw = Instant::now().duration_since(self.time_last_frame);
+                self.polys.teta +=
+                    2.0 * PI * self.revo_per_sec * (time_btw.as_millis() as f32 / 1_000.0);
+                self.polys.teta %= 2.0 * PI;
+                println!("Teta : {}", self.polys.teta);
+                self.time_last_frame = Instant::now();
             }
         }
     }
 
     fn view(&self) -> iced::Element<Message> {
         column![
-            text(self.counter),
+            text(self.polys.radius),
             row![
                 button("Increment").on_press(Message::ButtonPressedIncrement),
                 button("Decrement").on_press(Message::ButtonPressedDecrement),
             ],
-            canvas(Circle {
-                radius: self.counter
-            })
-            .height(500)
-            .width(500),
+            canvas(&self.polys).height(500).width(500),
         ]
         .into()
     }
-}
-
-struct Circle {
-    radius: f32,
-}
-
-impl<Message> canvas::Program<Message> for Circle {
-    // No internal state
-    type State = ();
-
-    fn draw(
-        &self,
-        _state: &(),
-        renderer: &Renderer,
-        _theme: &Theme,
-        bounds: Rectangle,
-        _cursor: mouse::Cursor,
-    ) -> Vec<canvas::Geometry> {
-        // We prepare a new `Frame`
-        //println!("w:{}, h:{}", bounds.size().width, bounds.size().height);
-        let mut frame = canvas::Frame::new(renderer, bounds.size());
-
-        // We create a `Path` representing a simple circle
-        let circle = canvas::Path::circle(frame.center(), self.radius);
-        let line = canvas::Path::line(frame.center(), iced::Point { x: 0.0, y: 0.0 });
-        frame.stroke(
-            &line,
-            Stroke {
-                width: 5.0,
-                ..Stroke::default()
-            },
-        );
-
-        // And fill it with some color
-        frame.stroke(
-            &circle,
-            Stroke {
-                width: 5.0,
-                style: Style::Solid(Color::from_rgba(0.0, 0.0, 0.0, 1.0)),
-                ..Stroke::default()
-            },
-        );
-
-        // Then, we produce the geometry
-        vec![frame.into_geometry()]
+    fn subscription(&self) -> iced::Subscription<Message> {
+        time::every(Duration::from_millis(1)).map(|_| Message::Tick)
     }
 }

src/polygon_draw.rs

@@ -0,0 +1,75 @@
+use std::f32::consts::PI;
+
+use iced::Vector;
+use iced::mouse;
+use iced::widget::canvas;
+use iced::widget::canvas::Stroke;
+use iced::widget::canvas::Style;
+use iced::{Color, Rectangle, Renderer, Theme};
+use std::time::SystemTime;
+
+pub trait RotationExt {
+    fn rotate(&mut self, teta: f32) -> Self;
+}
+
+impl RotationExt for Vector {
+    fn rotate(&mut self, teta: f32) -> Self {
+        let temp_x = self.x;
+        let temp_y = self.y;
+        self.x = temp_x * teta.cos() - temp_y * teta.sin();
+        self.y = temp_x * teta.sin() + temp_y * teta.cos();
+        *self
+    }
+}
+pub struct PolygonFrame {
+    pub radius: f32,
+    pub teta: f32,
+}
+
+impl<Message> canvas::Program<Message> for PolygonFrame {
+    // No internal state
+    type State = ();
+
+    fn draw(
+        &self,
+        _state: &(),
+        renderer: &Renderer,
+        _theme: &Theme,
+        bounds: Rectangle,
+        _cursor: mouse::Cursor,
+    ) -> Vec<canvas::Geometry> {
+        // We prepare a new `Frame`
+        let mut frame = canvas::Frame::new(renderer, bounds.size());
+
+        // We create a `Path` representing a simple circle
+        let circle = canvas::Path::circle(frame.center(), self.radius);
+        let mut vec = Vector::new(0.0, -self.radius);
+        let line = canvas::Path::line(
+            frame.center() + vec,
+            frame.center() + vec.rotate(2.0 * PI / 3.0),
+        );
+        let dot = canvas::Path::circle(frame.center() + vec.rotate(self.teta), 10.0);
+
+        frame.stroke(
+            &line,
+            Stroke {
+                width: 5.0,
+                ..Stroke::default()
+            },
+        );
+
+        // And fill it with some color
+        frame.stroke(
+            &circle,
+            Stroke {
+                width: 5.0,
+                style: Style::Solid(Color::from_rgba(0.0, 0.0, 0.0, 1.0)),
+                ..Stroke::default()
+            },
+        );
+        frame.fill(&dot, Color::from_rgb(1.0, 0.0, 0.0));
+
+        // Then, we produce the geometry
+        vec![frame.into_geometry()]
+    }
+}