Initial data commit

Task/Pythagoras-tree/BASIC256/pythagoras-tree.basic

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+Subroutine pythagoras_tree(x1, y1, x2, y2, depth)
+	If depth > 10 Then Return
+
+	dx = x2 - x1 : dy = y1 - y2
+	x3 = x2 - dy : y3 = y2 - dx
+	x4 = x1 - dy : y4 = y1 - dx
+	x5 = x4 + (dx - dy) / 2
+	y5 = y4 - (dx + dy) / 2
+	#draw the box
+	Line x1, y1, x2, y2 : Line x2, y2, x3, y3
+	Line x3, y3, x4, y4 : Line x4, y4, x1, y1
+
+	Call pythagoras_tree(x4, y4, x5, y5, depth +1)
+	Call pythagoras_tree(x5, y5, x3, y3, depth +1)
+End Subroutine
+
+w = 800 : h = w * 11 \ 16
+w2 = w \ 2 : diff = w \ 12
+
+Clg
+FastGraphics
+Graphsize w, h
+Color green
+Call pythagoras_tree(w2 - diff, h - 10, w2 + diff, h - 10, 0)
+Refresh
+ImgSave "pythagoras_tree.jpg", "jpg"
+End