├── css
    └── demo.css
├── LICENSE
├── README.md
├── js
    ├── packer.js
    ├── packer.growing.js
    ├── demo.js
    └── jquery.js
└── index.html


/css/demo.css:
--------------------------------------------------------------------------------
 1 | 
 2 | #settings                  { width: 12em; padding: 1em; display: inline-block; float: left; border: 1px solid #999; background-color: #EEE; }
 3 | #settings .examples        { margin-bottom: 1em; }
 4 | #settings .blocks          { }
 5 | #settings .blocks .example { color: #999; font-style: italic; float: right; margin-right: 1em; }
 6 | #settings .size            { clear: both; float: right; }
 7 | #settings .sort            { clear: both; float: right; }
 8 | #settings .color           { clear: both; float: right; margin-bottom: 1em; }
 9 | #settings .ratio           { clear: both; border: 1px solid #999; padding: 1em; }
10 | #settings .nofit           { display: none; border: 1px solid red; margin-top: 1em; padding: 1em; }
11 | 
12 | #packing                   { margin-left: 15em; }
13 | #canvas                    { background-color: #FBFBFB; }
14 | #unsupported               { border: 1px solid red; background-color: #FFFFAD; padding: 1em; margin: 1em; }
15 | 
16 | textarea { resize: none; }
17 | select   { width: 8em;   }
18 | 
19 | 
20 | 


--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
 1 | Copyright (c) 2011, 2012, 2013, 2014, 2015, 2016 Jake Gordon and contributors
 2 | 
 3 | Permission is hereby granted, free of charge, to any person obtaining a copy
 4 | of this software and associated documentation files (the "Software"), to deal
 5 | in the Software without restriction, including without limitation the rights
 6 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 7 | copies of the Software, and to permit persons to whom the Software is
 8 | furnished to do so, subject to the following conditions:
 9 | 
10 | The above copyright notice and this permission notice shall be included in all
11 | copies or substantial portions of the Software.
12 | 
13 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
18 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
19 | SOFTWARE.
20 | 
21 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | Binary Tree Algorithm for 2D Bin Packing
 2 | ========================================
 3 | 
 4 | This project is a javascript experiment to write a binary tree based
 5 | bin packing algorithm that is suitable for generating
 6 | [CSS sprites](https://github.com/jakesgordon/sprite-factory).
 7 | 
 8 |  * You can play with the [demo here](http://codeincomplete.com/posts/2011/5/7/bin_packing/example/)
 9 |  * You can find a [description here](http://codeincomplete.com/posts/2011/5/7/bin_packing/)
10 | 
11 | Demo
12 | ====
13 | 
14 | Clone this repository
15 | 
16 |     git clone https://github.com/jakesgordon/bin-packing
17 | 
18 | View the index.html file in your favorite browser for examples of algorithm in use with lots of configurable options.
19 | 
20 | Usage
21 | =====
22 | 
23 | If you want to use this in your own javascript projects, you need something like this:
24 | 
25 |     <script src='packer.growing.js'></script>
26 |     <script>
27 |       var packer = new Packer(1000, 1000);   // or:  new GrowingPacker();
28 |       var blocks = [
29 |         { w: 100, h: 100 },
30 |         { w: 100, h: 100 },
31 |         { w:  80, h:  80 },
32 |         { w:  80, h:  80 },
33 |         etc
34 |         etc
35 |       ];
36 | 
37 |       blocks.sort(function(a,b) { return (b.h < a.h); }); // sort inputs for best results
38 |       packer.fit(blocks);
39 |   
40 |       for(var n = 0 ; n < blocks.length ; n++) {
41 |         var block = blocks[n];
42 |         if (block.fit) {
43 |           DrawRectangle(block.fit.x, block.fit.y, block.w, block.h);
44 |         }
45 |       }
46 |     </script>
47 | 
48 | See source code comments for more details.
49 | 
50 | License
51 | =======
52 | 
53 | See [LICENSE](https://github.com/jakesgordon/bin-packing/blob/master/LICENSE) file.
54 | 
55 | Contact
56 | =======
57 | 
58 | If you have any ideas, feedback, requests or bug reports, you can reach me at
59 | [jake@codeincomplete.com](mailto:jake@codeincomplete.com), or via
60 | my website: [Code inComplete](http://codeincomplete.com/posts/2011/5/7/bin_packing/)
61 | 
62 | 


--------------------------------------------------------------------------------
/js/packer.js:
--------------------------------------------------------------------------------
 1 | /******************************************************************************
 2 | 
 3 | This is a very simple binary tree based bin packing algorithm that is initialized
 4 | with a fixed width and height and will fit each block into the first node where
 5 | it fits and then split that node into 2 parts (down and right) to track the
 6 | remaining whitespace.
 7 | 
 8 | Best results occur when the input blocks are sorted by height, or even better
 9 | when sorted by max(width,height).
10 | 
11 | Inputs:
12 | ------
13 | 
14 |   w:       width of target rectangle
15 |   h:      height of target rectangle
16 |   blocks: array of any objects that have .w and .h attributes
17 | 
18 | Outputs:
19 | -------
20 | 
21 |   marks each block that fits with a .fit attribute pointing to a
22 |   node with .x and .y coordinates
23 | 
24 | Example:
25 | -------
26 | 
27 |   var blocks = [
28 |     { w: 100, h: 100 },
29 |     { w: 100, h: 100 },
30 |     { w:  80, h:  80 },
31 |     { w:  80, h:  80 },
32 |     etc
33 |     etc
34 |   ];
35 | 
36 |   var packer = new Packer(500, 500);
37 |   packer.fit(blocks);
38 | 
39 |   for(var n = 0 ; n < blocks.length ; n++) {
40 |     var block = blocks[n];
41 |     if (block.fit) {
42 |       Draw(block.fit.x, block.fit.y, block.w, block.h);
43 |     }
44 |   }
45 | 
46 | 
47 | ******************************************************************************/
48 | 
49 | Packer = function(w, h) {
50 |   this.init(w, h);
51 | };
52 | 
53 | Packer.prototype = {
54 | 
55 |   init: function(w, h) {
56 |     this.root = { x: 0, y: 0, w: w, h: h };
57 |   },
58 | 
59 |   fit: function(blocks) {
60 |     var n, node, block;
61 |     for (n = 0; n < blocks.length; n++) {
62 |       block = blocks[n];
63 |       if (node = this.findNode(this.root, block.w, block.h))
64 |         block.fit = this.splitNode(node, block.w, block.h);
65 |     }
66 |   },
67 | 
68 |   findNode: function(root, w, h) {
69 |     if (root.used)
70 |       return this.findNode(root.right, w, h) || this.findNode(root.down, w, h);
71 |     else if ((w <= root.w) && (h <= root.h))
72 |       return root;
73 |     else
74 |       return null;
75 |   },
76 | 
77 |   splitNode: function(node, w, h) {
78 |     node.used = true;
79 |     node.down  = { x: node.x,     y: node.y + h, w: node.w,     h: node.h - h };
80 |     node.right = { x: node.x + w, y: node.y,     w: node.w - w, h: h          };
81 |     return node;
82 |   }
83 | 
84 | }
85 | 
86 | 


--------------------------------------------------------------------------------
/index.html:
--------------------------------------------------------------------------------
 1 | <!DOCTYPE HTML>
 2 | <html>
 3 | <head>
 4 |   <meta charset='utf-8' />
 5 |   <title>Bin Packing Algorithm</title>
 6 |   <link href='css/demo.css' rel='stylesheet' type='text/css' media='screen' />
 7 | </head>
 8 | <body>
 9 | 
10 |   <h1>Bin Packing Algorithm</h1>
11 | 
12 |   <div id="settings">
13 | 
14 |     <div class='examples'>
15 |       <label for='examples'>Examples: </label>
16 |       <select id='examples'>
17 |         <option value='simple'>   simple        </option>
18 |         <option value='square'>   square        </option>
19 |         <option value='tall'>     tall          </option>
20 |         <option value='wide'>     wide          </option>
21 |         <option value='tallwide'> tall and wide </option>
22 |         <option value='power2'>   powers of 2   </option>
23 |         <option value='oddeven'>  odd and even  </option>
24 |         <option value='complex'>  complex       </option>
25 |       </select>
26 |     </div>
27 |       
28 |     <div class='blocks'>
29 |       <label for='blocks'>Blocks: <span class='example'><b>W</b>x<b>H</b>[x<b>N</b>]</span></label>
30 |       <textarea id='blocks' rows=12></textarea>
31 |     </div>
32 | 
33 |     <div class='size'>
34 |       <label for='size'>size: </label>
35 |       <select id='size'>
36 |         <option>500x500</option>
37 |         <option>800x600</option>
38 |         <option selected>automatic</option>
39 |       </select>
40 |     </div>
41 | 
42 |     <div class='sort'>
43 |       <label for='sort'>sort: </label>
44 |       <select id='sort'>
45 |         <option>none</option>
46 |         <option>width</option>
47 |         <option>height</option>
48 |         <option selected>maxside</option>
49 |         <option>area</option>
50 |         <option>random</option>
51 |       </select>
52 |     </div>
53 | 
54 |     <div class='color'>
55 |       <label for='color'>color: </label>
56 |       <select id='color'>
57 |         <option>pastel</option>
58 |         <option>basic</option>
59 |         <option>gray</option>
60 |         <option>vintage</option>
61 |         <option>solarized</option>
62 |         <option>none</option>
63 |       </select>
64 |     </div>
65 | 
66 |     <div class="ratio">
67 |       Filled: <span id='ratio'>0</span>%
68 |     </div>
69 | 
70 |     <div id="nofit" class="nofit">
71 |     </div>
72 | 
73 |   </div>
74 | 
75 |   <div id="packing">
76 |     <canvas id="canvas">
77 |       <div id="unsupported">
78 |         Sorry, this example cannot be run because your browser does not support the &lt;canvas&gt; element
79 |       </div>
80 |     </canvas>
81 |   </div>
82 | 
83 |   <script src='js/jquery.js'>        </script>
84 |   <script src='js/packer.js'>        </script>
85 |   <script src='js/packer.growing.js'></script>
86 |   <script src='js/demo.js'>          </script>
87 | 
88 | </body>
89 | </html>
90 | 
91 | 


--------------------------------------------------------------------------------
/js/packer.growing.js:
--------------------------------------------------------------------------------
  1 | /******************************************************************************
  2 | 
  3 | This is a binary tree based bin packing algorithm that is more complex than
  4 | the simple Packer (packer.js). Instead of starting off with a fixed width and
  5 | height, it starts with the width and height of the first block passed and then
  6 | grows as necessary to accomodate each subsequent block. As it grows it attempts
  7 | to maintain a roughly square ratio by making 'smart' choices about whether to
  8 | grow right or down.
  9 | 
 10 | When growing, the algorithm can only grow to the right OR down. Therefore, if
 11 | the new block is BOTH wider and taller than the current target then it will be
 12 | rejected. This makes it very important to initialize with a sensible starting
 13 | width and height. If you are providing sorted input (largest first) then this
 14 | will not be an issue.
 15 | 
 16 | A potential way to solve this limitation would be to allow growth in BOTH
 17 | directions at once, but this requires maintaining a more complex tree
 18 | with 3 children (down, right and center) and that complexity can be avoided
 19 | by simply chosing a sensible starting block.
 20 | 
 21 | Best results occur when the input blocks are sorted by height, or even better
 22 | when sorted by max(width,height).
 23 | 
 24 | Inputs:
 25 | ------
 26 | 
 27 |   blocks: array of any objects that have .w and .h attributes
 28 | 
 29 | Outputs:
 30 | -------
 31 | 
 32 |   marks each block that fits with a .fit attribute pointing to a
 33 |   node with .x and .y coordinates
 34 | 
 35 | Example:
 36 | -------
 37 | 
 38 |   var blocks = [
 39 |     { w: 100, h: 100 },
 40 |     { w: 100, h: 100 },
 41 |     { w:  80, h:  80 },
 42 |     { w:  80, h:  80 },
 43 |     etc
 44 |     etc
 45 |   ];
 46 | 
 47 |   var packer = new GrowingPacker();
 48 |   packer.fit(blocks);
 49 | 
 50 |   for(var n = 0 ; n < blocks.length ; n++) {
 51 |     var block = blocks[n];
 52 |     if (block.fit) {
 53 |       Draw(block.fit.x, block.fit.y, block.w, block.h);
 54 |     }
 55 |   }
 56 | 
 57 | 
 58 | ******************************************************************************/
 59 | 
 60 | GrowingPacker = function() { };
 61 | 
 62 | GrowingPacker.prototype = {
 63 | 
 64 |   fit: function(blocks) {
 65 |     var n, node, block, len = blocks.length;
 66 |     var w = len > 0 ? blocks[0].w : 0;
 67 |     var h = len > 0 ? blocks[0].h : 0;
 68 |     this.root = { x: 0, y: 0, w: w, h: h };
 69 |     for (n = 0; n < len ; n++) {
 70 |       block = blocks[n];
 71 |       if (node = this.findNode(this.root, block.w, block.h))
 72 |         block.fit = this.splitNode(node, block.w, block.h);
 73 |       else
 74 |         block.fit = this.growNode(block.w, block.h);
 75 |     }
 76 |   },
 77 | 
 78 |   findNode: function(root, w, h) {
 79 |     if (root.used)
 80 |       return this.findNode(root.right, w, h) || this.findNode(root.down, w, h);
 81 |     else if ((w <= root.w) && (h <= root.h))
 82 |       return root;
 83 |     else
 84 |       return null;
 85 |   },
 86 | 
 87 |   splitNode: function(node, w, h) {
 88 |     node.used = true;
 89 |     node.down  = { x: node.x,     y: node.y + h, w: node.w,     h: node.h - h };
 90 |     node.right = { x: node.x + w, y: node.y,     w: node.w - w, h: h          };
 91 |     return node;
 92 |   },
 93 | 
 94 |   growNode: function(w, h) {
 95 |     var canGrowDown  = (w <= this.root.w);
 96 |     var canGrowRight = (h <= this.root.h);
 97 | 
 98 |     var shouldGrowRight = canGrowRight && (this.root.h >= (this.root.w + w)); // attempt to keep square-ish by growing right when height is much greater than width
 99 |     var shouldGrowDown  = canGrowDown  && (this.root.w >= (this.root.h + h)); // attempt to keep square-ish by growing down  when width  is much greater than height
100 | 
101 |     if (shouldGrowRight)
102 |       return this.growRight(w, h);
103 |     else if (shouldGrowDown)
104 |       return this.growDown(w, h);
105 |     else if (canGrowRight)
106 |      return this.growRight(w, h);
107 |     else if (canGrowDown)
108 |       return this.growDown(w, h);
109 |     else
110 |       return null; // need to ensure sensible root starting size to avoid this happening
111 |   },
112 | 
113 |   growRight: function(w, h) {
114 |     this.root = {
115 |       used: true,
116 |       x: 0,
117 |       y: 0,
118 |       w: this.root.w + w,
119 |       h: this.root.h,
120 |       down: this.root,
121 |       right: { x: this.root.w, y: 0, w: w, h: this.root.h }
122 |     };
123 |     if (node = this.findNode(this.root, w, h))
124 |       return this.splitNode(node, w, h);
125 |     else
126 |       return null;
127 |   },
128 | 
129 |   growDown: function(w, h) {
130 |     this.root = {
131 |       used: true,
132 |       x: 0,
133 |       y: 0,
134 |       w: this.root.w,
135 |       h: this.root.h + h,
136 |       down:  { x: 0, y: this.root.h, w: this.root.w, h: h },
137 |       right: this.root
138 |     };
139 |     if (node = this.findNode(this.root, w, h))
140 |       return this.splitNode(node, w, h);
141 |     else
142 |       return null;
143 |   }
144 | 
145 | }
146 | 
147 | 
148 | 


--------------------------------------------------------------------------------
/js/demo.js:
--------------------------------------------------------------------------------
  1 | /******************************************************************************
  2 | 
  3 |  This is a demo page to experiment with binary tree based
  4 |  algorithms for packing blocks into a single 2 dimensional bin.
  5 | 
  6 |  See individual .js files for descriptions of each algorithm:
  7 | 
  8 |   * packer.js         - simple algorithm for a fixed width/height bin
  9 |   * packer.growing.js - complex algorithm that grows automatically
 10 | 
 11 |  TODO
 12 |  ====
 13 |   * step by step animated render to watch packing in action (and help debug)
 14 |   * optimization - mark branches as "full" to avoid walking them
 15 |   * optimization - dont bother with nodes that are less than some threshold w/h (2? 5?)
 16 | 
 17 | *******************************************************************************/
 18 | 
 19 | Demo = {
 20 | 
 21 |   init: function() {
 22 | 
 23 |     Demo.el = {
 24 |       examples: $('#examples'),
 25 |       blocks:   $('#blocks'),
 26 |       canvas:   $('#canvas')[0],
 27 |       size:     $('#size'),
 28 |       sort:     $('#sort'),
 29 |       color:    $('#color'),
 30 |       ratio:    $('#ratio'),
 31 |       nofit:    $('#nofit')
 32 |     };
 33 | 
 34 |     if (!Demo.el.canvas.getContext) // no support for canvas
 35 |       return false;
 36 | 
 37 |     Demo.el.draw = Demo.el.canvas.getContext("2d");
 38 |     Demo.el.blocks.val(Demo.blocks.serialize(Demo.blocks.examples.current()));
 39 |     Demo.el.blocks.change(Demo.run);
 40 |     Demo.el.size.change(Demo.run);
 41 |     Demo.el.sort.change(Demo.run);
 42 |     Demo.el.color.change(Demo.run);
 43 |     Demo.el.examples.change(Demo.blocks.examples.change);
 44 |     Demo.run();
 45 | 
 46 |     Demo.el.blocks.keypress(function(ev) {
 47 |       if (ev.which == 13)
 48 |         Demo.run(); // run on <enter> while entering block information
 49 |     });
 50 |   },
 51 | 
 52 |   //---------------------------------------------------------------------------
 53 | 
 54 |   run: function() {
 55 | 
 56 |     var blocks = Demo.blocks.deserialize(Demo.el.blocks.val());
 57 |     var packer = Demo.packer();
 58 | 
 59 |     Demo.sort.now(blocks);
 60 | 
 61 |     packer.fit(blocks);
 62 | 
 63 |     Demo.canvas.reset(packer.root.w, packer.root.h);
 64 |     Demo.canvas.blocks(blocks);
 65 |     Demo.canvas.boundary(packer.root);
 66 |     Demo.report(blocks, packer.root.w, packer.root.h);
 67 |   },
 68 | 
 69 |   //---------------------------------------------------------------------------
 70 | 
 71 |   packer: function() {
 72 |     var size = Demo.el.size.val();
 73 |     if (size == 'automatic') {
 74 |       return new GrowingPacker();
 75 |     }
 76 |     else {
 77 |       var dims = size.split("x");
 78 |       return new Packer(parseInt(dims[0]), parseInt(dims[1]));
 79 |     }
 80 |   },
 81 | 
 82 |   //---------------------------------------------------------------------------
 83 | 
 84 |   report: function(blocks, w, h) {
 85 |     var fit = 0, nofit = [], block, n, len = blocks.length;
 86 |     for (n = 0 ; n < len ; n++) {
 87 |       block = blocks[n];
 88 |       if (block.fit)
 89 |         fit = fit + block.area;
 90 |       else
 91 |         nofit.push("" + block.w + "x" + block.h);
 92 |     }
 93 |     Demo.el.ratio.text(Math.round(100 * fit / (w * h)));
 94 |     Demo.el.nofit.html("Did not fit (" + nofit.length + ") :<br>" + nofit.join(", ")).toggle(nofit.length > 0);
 95 |   },
 96 | 
 97 |   //---------------------------------------------------------------------------
 98 | 
 99 |   sort: {
100 | 
101 |     random  : function (a,b) { return Math.random() - 0.5; },
102 |     w       : function (a,b) { return b.w - a.w; },
103 |     h       : function (a,b) { return b.h - a.h; },
104 |     a       : function (a,b) { return b.area - a.area; },
105 |     max     : function (a,b) { return Math.max(b.w, b.h) - Math.max(a.w, a.h); },
106 |     min     : function (a,b) { return Math.min(b.w, b.h) - Math.min(a.w, a.h); },
107 | 
108 |     height  : function (a,b) { return Demo.sort.msort(a, b, ['h', 'w']);               },
109 |     width   : function (a,b) { return Demo.sort.msort(a, b, ['w', 'h']);               },
110 |     area    : function (a,b) { return Demo.sort.msort(a, b, ['a', 'h', 'w']);          },
111 |     maxside : function (a,b) { return Demo.sort.msort(a, b, ['max', 'min', 'h', 'w']); },
112 | 
113 |     msort: function(a, b, criteria) { /* sort by multiple criteria */
114 |       var diff, n;
115 |       for (n = 0 ; n < criteria.length ; n++) {
116 |         diff = Demo.sort[criteria[n]](a,b);
117 |         if (diff != 0)
118 |           return diff;  
119 |       }
120 |       return 0;
121 |     },
122 | 
123 |     now: function(blocks) {
124 |       var sort = Demo.el.sort.val();
125 |       if (sort != 'none')
126 |         blocks.sort(Demo.sort[sort]);
127 |     }
128 |   },
129 | 
130 |   //---------------------------------------------------------------------------
131 | 
132 |   canvas: {
133 | 
134 |     reset: function(width, height) {
135 |       Demo.el.canvas.width  = width  + 1; // add 1 because we draw boundaries offset by 0.5 in order to pixel align and get crisp boundaries
136 |       Demo.el.canvas.height = height + 1; // (ditto)
137 |       Demo.el.draw.clearRect(0, 0, Demo.el.canvas.width, Demo.el.canvas.height);
138 |     },
139 | 
140 |     rect:  function(x, y, w, h, color) {
141 |       Demo.el.draw.fillStyle = color;
142 |       Demo.el.draw.fillRect(x + 0.5, y + 0.5, w, h);
143 |     },
144 | 
145 |     stroke: function(x, y, w, h) {
146 |       Demo.el.draw.strokeRect(x + 0.5, y + 0.5, w, h);
147 |     },
148 | 
149 |     blocks: function(blocks) {
150 |       var n, block;
151 |       for (n = 0 ; n < blocks.length ; n++) {
152 |         block = blocks[n];
153 |         if (block.fit)
154 |           Demo.canvas.rect(block.fit.x, block.fit.y, block.w, block.h, Demo.color(n));
155 |       }
156 |     },
157 |     
158 |     boundary: function(node) {
159 |       if (node) {
160 |         Demo.canvas.stroke(node.x, node.y, node.w, node.h);
161 |         Demo.canvas.boundary(node.down);
162 |         Demo.canvas.boundary(node.right);
163 |       }
164 |     }
165 |   },
166 | 
167 |   //---------------------------------------------------------------------------
168 | 
169 |   blocks: {
170 | 
171 |     examples: {
172 | 
173 |       simple: [
174 |         { w: 500, h: 200, num:  1 },
175 |         { w: 250, h: 200, num:  1 },
176 |         { w: 50,  h: 50,  num: 20 }
177 |       ],
178 | 
179 |       square: [
180 |         { w: 50, h: 50, num: 100 }
181 |       ],
182 | 
183 |       power2: [
184 |         { w:   2, h:   2, num: 256 },
185 |         { w:   4, h:   4, num: 128 },
186 |         { w:   8, h:   8, num:  64 },
187 |         { w:  16, h:  16, num:  32 },
188 |         { w:  32, h:  32, num:  16 },
189 |         { w:  64, h:  64, num:   8 },
190 |         { w: 128, h: 128, num:   4 },
191 |         { w: 256, h: 256, num:   2 }
192 |       ],
193 | 
194 |       tall: [
195 |         { w: 50,  h: 400, num:  2 },
196 |         { w: 50,  h: 300, num:  5 },
197 |         { w: 50,  h: 200, num: 10 },
198 |         { w: 50,  h: 100, num: 20 },
199 |         { w: 50,  h:  50, num: 40 }
200 |       ],
201 | 
202 |       wide: [
203 |         { w: 400, h:  50, num:  2 },
204 |         { w: 300, h:  50, num:  5 },
205 |         { w: 200, h:  50, num: 10 },
206 |         { w: 100, h:  50, num: 20 },
207 |         { w:  50, h:  50, num: 40 }
208 |       ],
209 | 
210 |       tallwide: [ /* alternate tall then wide */
211 |         { w: 400, h: 100 },
212 |         { w: 100, h: 400 },
213 |         { w: 400, h: 100 },
214 |         { w: 100, h: 400 },
215 |         { w: 400, h: 100 },
216 |         { w: 100, h: 400 }
217 |       ],
218 | 
219 |       oddeven: [ /* both odd and even sizes leaves little areas of whitespace */
220 |         { w:  50, h:  50, num: 20 },
221 |         { w:  47, h:  31, num: 20 },
222 |         { w:  23, h:  17, num: 20 },
223 |         { w: 109, h:  42, num: 20 },
224 |         { w:  42, h: 109, num: 20 },
225 |         { w:  17, h:  33, num: 20 },
226 |       ],
227 | 
228 |       complex: [
229 |         {w: 100, h: 100, num:   3},
230 |         {w:  60, h:  60, num:   3},
231 |         {w:  50, h:  20, num:  20},
232 |         {w:  20, h:  50, num:  20},
233 |         {w: 250, h: 250, num:   1},
234 |         {w: 250, h: 100, num:   1},
235 |         {w: 100, h: 250, num:   1},
236 |         {w: 400, h:  80, num:   1},
237 |         {w: 80,  h: 400, num:   1},
238 |         {w:  10, h:  10, num: 100},
239 |         {w:   5, h:   5, num: 500}
240 |       ],
241 | 
242 |       current: function() {
243 |         return Demo.blocks.examples[Demo.el.examples.val()];
244 |       },
245 | 
246 |       change: function() {
247 |         Demo.el.blocks.val(Demo.blocks.serialize(Demo.blocks.examples.current()));
248 |         Demo.run();
249 |       }
250 |     },
251 | 
252 |     deserialize: function(val) {
253 |       var i, j, block, blocks = val.split("\n"), result = [];
254 |       for(i = 0 ; i < blocks.length ; i++) {
255 |         block = blocks[i].split("x");
256 |         if (block.length >= 2)
257 |           result.push({w: parseInt(block[0]), h: parseInt(block[1]), num: (block.length == 2 ? 1 : parseInt(block[2])) });
258 |       }
259 |       var expanded = [];
260 |       for(i = 0 ; i < result.length ; i++) {
261 |         for(j = 0 ; j < result[i].num ; j++)
262 |           expanded.push({w: result[i].w, h: result[i].h, area: result[i].w * result[i].h});
263 |       }
264 |       return expanded;
265 |     },
266 | 
267 |     serialize: function(blocks) {
268 |       var i, block, str = "";
269 |       for(i = 0; i < blocks.length ; i++) {
270 |         block = blocks[i];
271 |         str = str + block.w + "x" + block.h + (block.num > 1 ? "x" + block.num : "") + "\n";
272 |       }
273 |       return str;
274 |     }
275 | 
276 |   },
277 | 
278 |   //---------------------------------------------------------------------------
279 | 
280 |   colors: {
281 |     pastel:         [ "#FFF7A5", "#FFA5E0", "#A5B3FF", "#BFFFA5", "#FFCBA5" ],
282 |     basic:          [ "silver", "gray", "red", "maroon", "yellow", "olive", "lime", "green", "aqua", "teal", "blue", "navy", "fuchsia", "purple" ],
283 |     gray:           [ "#111", "#222", "#333", "#444", "#555", "#666", "#777", "#888", "#999", "#AAA", "#BBB", "#CCC", "#DDD", "#EEE" ],
284 |     vintage:        [ "#EFD279", "#95CBE9", "#024769", "#AFD775", "#2C5700", "#DE9D7F", "#7F9DDE", "#00572C", "#75D7AF", "#694702", "#E9CB95", "#79D2EF" ],
285 |     solarized:      [ "#b58900", "#cb4b16", "#dc322f", "#d33682", "#6c71c4", "#268bd2", "#2aa198", "#859900" ],
286 |     none:           [ "transparent" ]
287 |   },
288 | 
289 |   color: function(n) {
290 |     var cols = Demo.colors[Demo.el.color.val()];
291 |     return cols[n % cols.length];
292 |   }
293 | 
294 |   //---------------------------------------------------------------------------
295 | 
296 | }
297 | 
298 | $(Demo.init);
299 | 
300 | 


--------------------------------------------------------------------------------
/js/jquery.js:
--------------------------------------------------------------------------------
 1 | /*!
 2 |  * jQuery JavaScript Library v1.6
 3 |  * http://jquery.com/
 4 |  *
 5 |  * Copyright 2011, John Resig
 6 |  * Dual licensed under the MIT or GPL Version 2 licenses.
 7 |  * http://jquery.org/license
 8 |  *
 9 |  * Includes Sizzle.js
10 |  * http://sizzlejs.com/
11 |  * Copyright 2011, The Dojo Foundation
12 |  * Released under the MIT, BSD, and GPL Licenses.
13 |  *
14 |  * Date: Mon May 2 13:50:00 2011 -0400
15 |  */
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