wielokąt żółwiem

src/turtle/Kwadrat.java

+package turtle;
+
+public class Kwadrat {
+
+	public static void main(String[] args) {
+		Turtle turtle = new Turtle();
+		
+		/*
+		turtle.forward(100);
+		turtle.left(90);
+		turtle.forward(100);
+		turtle.left(90);
+		turtle.forward(100);
+		turtle.left(90);
+		turtle.forward(100);
+		turtle.left(90);
+		*/
+		for(int i = 0; i < 4; i++) {
+			turtle.forward(100);
+			turtle.left(90);
+		}
+		
+	}
+
+}

src/turtle/Wielokat.java

+package turtle;
+
+import javax.swing.JOptionPane;
+
+public class Wielokat {
+
+	public static void main(String[] args) {
+        final int OBWOD = 2000;
+        int n = Integer.parseInt(JOptionPane.showInputDialog("Podaj liczbę boków"));
+        double kat = 360.0 / n;
+        double bok = (double)OBWOD / n;
+
+        // za pomocą żółwia narysuj wielokąt foremny o tylu wierzchołkach / bokach
+        Turtle.setCanvasSize(OBWOD / 2, OBWOD / 2);
+        Turtle t = new Turtle(-bok/2, -OBWOD/(Math.PI * 2));
+        t.penColor("blue");
+        t.width(5);
+
+		for(int i = 0; i < n; i++) {
+			t.forward(bok);
+			t.left(kat);
+		}
+	}
+
+}

src/turtle/Wielokat_v1.java

+package turtle;
+
+import javax.swing.JOptionPane;
+
+public class Wielokat_v1 {
+
+	public static void main(String[] args) {
+		int n = Integer.parseInt(JOptionPane.showInputDialog("Podaj liczbę boków"));
+		// za pomocą żółwia narysuj wielokąt foremny o n bokach
+		Turtle turtle = new Turtle();
+		double kat = 360.0 / n;
+		for(int i = 0; i < n; i++) {
+			turtle.forward(100);
+			turtle.right(kat);
+		}
+	}
+
+}