polygons

src/main.rs

@@ -3,43 +3,32 @@ mod turtle;
 use turtle::{defaults, Turtle};
 
 #[allow(dead_code)]
-fn square() {
+fn polygon(corners_number: u32, steps_count: u32, output_path: &'static str) {
-    let mut turtle = Turtle::new();
-    let default_pos = defaults::position();
-    let steps_count = 20;
-
-    turtle.set_pos((
-        default_pos.0 - (turtle.step_length() * steps_count / 2) as i32, 
-        default_pos.1 + (turtle.step_length() * steps_count / 2) as i32
-    ));
-
-    turtle.left_forward(90.0, steps_count);
-    for _ in 0..3 {
-        turtle.right_forward(90.0, steps_count);
-    }
-    turtle.save("imgs/square.png").unwrap();
-}
-
-#[allow(dead_code)]
-fn circle() {
     let mut turtle = Turtle::new();
     let default_pos = defaults::position();
 
-    let circumference = (36 * 2 * defaults::STEP_LENGTH) as f64;
+    let degree = 360.0 / corners_number as f64;
+    let circumference = (corners_number * steps_count * defaults::STEP_LENGTH) as f64;
     let radius = circumference / (2.0 * std::f64::consts::PI);
 
     turtle.set_pos((
-        default_pos.0 - (turtle.step_length() * 2 / 2) as i32,
+        default_pos.0 - (turtle.step_length() * steps_count / 2) as i32,
         default_pos.1 - radius as i32
     ));
     
-    for _ in 0..36 {
+    for _ in 0..corners_number {
-        turtle.forward_right(2, 10.0);
+        turtle.forward_right(steps_count, degree);
     }
-    turtle.save("imgs/circle.png").unwrap();
+    turtle.save(output_path).unwrap();
 }
 
 fn main() {
-    square();
+    polygon(3, 10, "imgs/polygons/triangle.png");
-    circle();
+    polygon(4, 10, "imgs/polygons/square.png");
+    polygon(5, 10, "imgs/polygons/pentagon.png");
+    polygon(6, 10, "imgs/polygons/hexagon.png");
+    polygon(7, 10, "imgs/polygons/heptagon.png");
+    polygon(8, 10, "imgs/polygons/octagon.png");
+    polygon(9, 5, "imgs/polygons/nonagon.png");
+    polygon(36, 2, "imgs/polygons/circle.png");
 }