trpomoais2018 · korosidis · Jun 20, 2018 · Jun 21, 2018 · Jun 21, 2018 · disturm
diff --git a/Harter–Heighway dragon.html b/Harter–Heighway dragon.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<html>
+
+<head>
+    <meta charset=UTF-8">
+    <title>Harter–Heighway dragon</title>
+</head>
+
+<body>
+    <canvas id="myCanvas" width="1000" height="1000"></canvas>
+    <script src="Harter–Heighway dragon.js">
+    </script>
+</body>
+
+</html>
diff --git a/Harter–Heighway dragon.js b/Harter–Heighway dragon.js
@@ -0,0 +1,23 @@
+window.onload = function() {
+            var canvas = document.getElementById('myCanvas');
+            var context = canvas.getContext('2d');
+            canvas.width = 1000, canvas.height = 1000;
+            context.beginPath();
+            recurs(context, 17, 400, 250, 400, 550, 1); //рекурсивная функция, рисующая фрактальную кривую
+            context.stroke();
+        };
+        var angle = 45 * Math.PI / 180; //переводим углы в радианы
+        var angle2;
+
+        function recurs(context, n, x0, y0, x1, y1, k) { //n итераций, Точки A1(x0,y0) и A2(x1,y1)
+            if (n == 0) {
+                context.moveTo(x0, y0);
+                context.lineTo(x1, y1);
+            } else {
+                angle2 = angle * k;
+                var xx = Math.cos(angle2) * ((x1 - x0) * Math.cos(angle2) - (y1 - y0) * Math.sin(angle2)) + x0;
+                var yy = Math.cos(angle2) * ((x1 - x0) * Math.sin(angle2) + (y1 - y0) * Math.cos(angle2)) + y0; //находим точку A3
+                recurs(context, n - 1, x0, y0, xx, yy, 1); //A1, A3
+                recurs(context, n - 1, xx, yy, x1, y1, -1); //A3, A2
+            }
+        }
diff --git a/images/Thumbs.db b/images/Thumbs.db
diff --git a/index.html b/index.html