Data commit

Task/Fractal-tree/Scala/fractal-tree.scala

@@ -0,0 +1,31 @@
+import swing._
+import java.awt.{RenderingHints, BasicStroke, Color}
+
+object FractalTree extends SimpleSwingApplication {
+  val DEPTH = 9
+
+  def top = new MainFrame {
+    contents = new Panel {
+      preferredSize = new Dimension(600, 500)
+
+      override def paintComponent(g: Graphics2D) {
+        draw(300, 460, -90, DEPTH)
+
+        def draw(x1: Int, y1: Int, angle: Double, depth: Int) {
+          if (depth > 0) {
+            val x2 = x1 + (math.cos(angle.toRadians) * depth * 10).toInt
+            val y2 = y1 + (math.sin(angle.toRadians) * depth * 10).toInt
+
+            g.setColor(Color.getHSBColor(0.25f - depth * 0.125f / DEPTH, 0.9f, 0.6f))
+            g.setStroke(new BasicStroke(depth))
+            g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON)
+            g.drawLine(x1, y1, x2, y2)
+
+            draw(x2, y2, angle - 20, depth - 1)
+            draw(x2, y2, angle + 20, depth - 1)
+          }
+        }
+      }
+    }
+  }
+}