Just another update

Task/Sierpinski-triangle-Graphical/D/sierpinski-triangle-graphical.d

@@ -1,6 +1,6 @@
-import grayscale_image;
-
 void main() {
+    import grayscale_image;
+
     enum order = 8,
          margin = 10,
          width = 2 ^^ order;
@@ -8,8 +8,8 @@ void main() {
     auto im = new Image!Gray(width + 2 * margin, width + 2 * margin);
     im.clear(Gray.white);
 
-    foreach (y; 0 .. width)
-        foreach (x; 0 .. width)
+    foreach (immutable y; 0 .. width)
+        foreach (immutable x; 0 .. width)
             if ((x & y) == 0)
                 im[x + margin, y + margin] = Gray.black;
     im.savePGM("sierpinski.pgm");

Task/Sierpinski-triangle-Graphical/Java/sierpinski-triangle-graphical.java

@@ -0,0 +1,58 @@
+import javax.swing.*;
+import java.awt.*;
+
+/**
+* SierpinskyTriangle.java
+* Draws a SierpinskyTriangle in a JFrame
+* The order of complexity is given from command line, but
+* defaults to 3
+*
+* @author Istarnion
+*/
+
+class SierpinskyTriangle {
+
+	public static void main(String[] args) {
+		int i = 3;		// Default to 3
+		if(args.length >= 1) {
+			try {
+				i = Integer.parseInt(args[0]);
+			}
+			catch(NumberFormatException e) {
+				System.out.println("Usage: 'java SierpinskyTriangle [level]'\nNow setting level to "+i);
+			}
+		}
+		final int level = i;
+
+		JFrame frame = new JFrame("Sierpinsky Triangle - Java");
+		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+
+		JPanel panel = new JPanel() {
+			@Override
+			public void paintComponent(Graphics g) {
+				g.setColor(Color.BLACK);
+				drawSierpinskyTriangle(level, 20, 20, 360, (Graphics2D)g);
+			}
+		};
+
+		panel.setPreferredSize(new Dimension(400, 400));
+
+		frame.add(panel);
+		frame.pack();
+		frame.setResizable(false);
+		frame.setLocationRelativeTo(null);
+		frame.setVisible(true);
+	}
+
+	private static void drawSierpinskyTriangle(int level, int x, int y, int size, Graphics2D g) {
+		if(level <= 0) return;
+
+		g.drawLine(x, y, x+size, y);
+		g.drawLine(x, y, x, y+size);
+		g.drawLine(x+size, y, x, y+size);
+
+		drawSierpinskyTriangle(level-1, x, y, size/2, g);
+		drawSierpinskyTriangle(level-1, x+size/2, y, size/2, g);
+		drawSierpinskyTriangle(level-1, x, y+size/2, size/2, g);
+	}
+}

Task/Sierpinski-triangle-Graphical/Python/sierpinski-triangle-graphical-1.py

@@ -0,0 +1,20 @@
+#!/usr/bin/env python
+##########################################################################################
+# import necessary modules
+# ------------------------
+from numpy import *
+import turtle
+
+##########################################################################################
+#	Functions defining the drawing actions
+#       (used by the function DrawSierpinskiTriangle).
+#	----------------------------------------------
+def Left(turn, point, fwd, angle, turt):
+	turt.left(angle)
+	return [turn, point, fwd, angle, turt]
+def Right(turn, point, fwd, angle, turt):
+	turt.right(angle)
+	return [turn, point, fwd, angle, turt]
+def Forward(turn, point, fwd, angle, turt):
+	turt.forward(fwd)
+	return [turn, point, fwd, angle, turt]

Task/Sierpinski-triangle-Graphical/Python/sierpinski-triangle-graphical-2.py

@@ -1,28 +1,10 @@
-#!/usr/bin/env python
-################################################################################################
-# import necessary modules
-# ------------------------
-from numpy import *
-import turtle
-################################################################################################
-#	Functions defining the drawing actions (used by the function DrawSierpinskiTriangle).
-#	-------------------------------------------------------------------------------------
-def Left(turn, point, fwd, angle, turt):
-	turt.left(angle)
-	return [turn, point, fwd, angle, turt]
-def Right(turn, point, fwd, angle, turt):
-	turt.right(angle)
-	return [turn, point, fwd, angle, turt]
-def Forward(turn, point, fwd, angle, turt):
-	turt.forward(fwd)
-	return [turn, point, fwd, angle, turt]
-################################################################################################
+##########################################################################################
 #		The drawing function
 #		--------------------
 #
 # level		level of Sierpinski triangle (minimum value = 1)
 # ss		screensize (Draws on a screen of size ss x ss. Default value = 400.)
-#-----------------------------------------------------------------------------------------------
+#-----------------------------------------------------------------------------------------
 def DrawSierpinskiTriangle(level, ss=400):
 	# typical values
 	turn = 0		# initial turn (0 to start horizontally)
@@ -73,6 +55,6 @@ def DrawSierpinskiTriangle(level, ss=400):
 	# Draw it.
 	for i in path:
 		[turn, point, fwd, angle, turt]=decode[i](turn, point, fwd, angle, turt)
-################################################################################################
+##########################################################################################
 
 DrawSierpinskiTriangle(5)