add audio but better with kira

src/polygon_draw.rs

@@ -6,6 +6,7 @@ use iced::widget::canvas;
 use iced::widget::canvas::Stroke;
 use iced::widget::canvas::Style;
 use iced::{Color, Rectangle, Renderer, Theme};
+use std::time::Instant;
 
 pub trait RotationExt {
     fn rotate(&mut self, teta: f32) -> Self;
@@ -24,6 +25,17 @@ pub struct PolygonFrame {
     pub polygons: Vec<Polygon>,
 }
 
+impl PolygonFrame {
+    pub fn have_point_polygon_btw(&self, before: f32, after: f32) -> bool {
+        for poly in &self.polygons {
+            if poly.have_points_btw(before, after) {
+                return true;
+            }
+        }
+        false
+    }
+}
+
 impl<Message> canvas::Program<Message> for PolygonFrame {
     // No internal state
     type State = ();
@@ -97,6 +109,19 @@ pub struct Polygon {
 }
 #[warn(dead_code)]
 impl Polygon {
+    pub fn have_points_btw(&self, before: f32, after: f32) -> bool {
+        let mut p_g;
+        for p in self.points_teta.clone() {
+            p_g = p + self.global_teta;
+            if before < p_g && p_g < after {
+                return true;
+            }
+            if p_g > after {
+                return false;
+            };
+        }
+        false
+    }
     pub fn n_gon(teta: f32, n_side: u8) -> Self {
         let mut v: Vec<f32> = Vec::with_capacity(n_side as usize);
         for i in 0..n_side {
@@ -112,11 +137,11 @@ impl Polygon {
     }
 
     pub fn triangle(teta: f32) -> Self {
-        Polygon::n_gon(teta, 2)
+        Polygon::n_gon(teta, 3)
     }
 
     pub fn square(teta: f32) -> Self {
-        Polygon::n_gon(teta, 2)
+        Polygon::n_gon(teta, 4)
     }
 
     pub fn nr_6_in_30(teta: f32) -> Self {