fjangulob0915

URL: http://

* ========================================================================== */
/* Integer-partition demo: */
/* Copyright (c) 2009 Laurens Rodriguez Oscanoa */
/* http://www.opensource.org/licenses/mit-license.php */
/* -------------------------------------------------------------------------- */

package {

import flash.display.Sprite;
import flash.text.TextField;
import flash.text.TextFormat;

// Compiled with Flex 3.2.0.
[SWF(backgroundColor="#FFFFFF", frameRate="30", width="640", height="280")]

public class partitions extends Sprite {

private const N:int = 7;
private var count:int = 0;

public function partitions() {
// Draw all the integer partitions of [N]
listPartitions(N, new Array());
}

private function listPartitions(sum:int, list:Array):void {
// Get minimum value we can add to the list, because the list is sorted
// in ascending order this value would be the last array element.
// In case the array is empty [min] would be 1.
var min:int = (list.length > 0)? list[list.length - 1] : 1;

for (var k:int = min; k <= sum; ++k) {
// Create an array that is a copy of array [list]
var mz:Array = list.concat();

// Add [k] as last element to array copy.
mz.push(k);

// If we reached the target goal: (sum - k) == 0, draw the [list],
// in other case continue recursion.
if (sum - k == 0) {
addChild(Graphics.node(25 + (28 * count), 20, 12, String(count + 1),
0xFFFFFF, 0xCCBB00, 0x887700));
addChild(Graphics.strip(25 + (28 * count), 50, 28, 11, mz,
Graphics.warmColor(), 0x998800));
++count;
}
else {
listPartitions(sum - k, mz);
}
}
}
}
}

import flash.display.Sprite;
import flash.text.TextField;
import flash.text.TextFormat;

class Graphics {

// Return a "warm" color.
public static function warmColor():Number {
var b:int = 192 + (16 * Math.random());
var r:int = 240 + (16 * Math.random());
var g:int = 224 + (16 * Math.random());
return (r << 16 | g << 8 | b);
}

// Return a "strip", that is a list of nodes joined by a line.
public static function strip(x:int,
y:int,
offset:int,
radius:Number,
list:Array,
colorBody:Number,
colorBorder:Number,
vertical:Boolean = true,
colorText:Number = 0,
borderSize:Number = 0.5,
font:String = "Verdana"):Sprite {

var strip:Sprite = new Sprite();

strip.graphics.lineStyle(3 * borderSize, colorBorder);
strip.graphics.beginFill(colorBody);
strip.graphics.moveTo(x, y);
if (vertical) {
strip.graphics.lineTo(x, y + (offset * (list.length - 1)));
}
else {
strip.graphics.lineTo(x + (offset * (list.length - 1)), y);
}
strip.graphics.endFill();

var node:Sprite;
for (var k:int = 0; k < list.length; ++k) {
if (vertical) {
node = Graphics.node(x, y + (offset * k), radius,
list[k], colorBody, colorBorder,
colorText, borderSize, font);
}
else {
node = Graphics.node(x + (offset * k), y, radius,
list[k], colorBody, colorBorder,
colorText, borderSize, font);
}
strip.addChild(node);
}
return strip;
}

// Return a "node", that is a circle with a label.
public static function node(x:int,
y:int,
radius:Number,
caption:String,
colorBody:Number,
colorBorder:Number,
colorText:Number = 0,
borderSize:Number = 0.5,
font:String = "Verdana"):Sprite {
var format:TextFormat = new TextFormat();
format.font = font;
format.color = colorText;
format.size = 12;
format.bold = true;

var label:TextField = new TextField();
label.selectable = false;
label.defaultTextFormat = format;
label.text = caption;
label.x = -2*label.textWidth/3; // need to fix this ad-hoc solution
label.y = -2*label.textHeight/3; // for centering text.

var node:Sprite = new Sprite();
node.graphics.lineStyle(borderSize, colorBorder);
node.graphics.beginFill(colorBody);
node.graphics.drawCircle(0, 0, radius);
node.graphics.endFill();
node.addChild(label);
node.x = x;
node.y = y;
return node;
}
}