cache_dir != '') { $cache_file = $this->cache_dir.'/rsscache_'.md5($rss_url); $timedif = @ (time() - filemtime($cache_file)); if ($timedif < $this->cache_time) { // cached file is fresh enough, return cached array $result = unserialize(join('', file($cache_file))); // set 'cached' to 1 only if cached file is correct if ($result) $result['cached'] = 1; } else { // cached file is too old, create new $result = $this->Parse($rss_url); $serialized = serialize($result); if ($f = @ fopen($cache_file, 'w')) { fwrite($f, $serialized, strlen($serialized)); fclose($f); } if ($result) $result['cached'] = 0; } } // If CACHE DISABLED >> load and parse the file directly else { $result = $this->Parse($rss_url); if ($result) $result['cached'] = 0; } // return result return $result; } // ------------------------------------------------------------------- // Modification of preg_match(); return trimed field with index 1 // from 'classic' preg_match() array output // ------------------------------------------------------------------- function my_preg_match($pattern, $subject) { // start regullar expression preg_match($pattern, $subject, $out); // if there is some result... process it and return it if (isset ($out[1])) { // Process CDATA (if present) if ($this->CDATA == 'content') { // Get CDATA content (without CDATA tag) $out[1] = strtr($out[1], array (' '', ']]>' => '')); } elseif ($this->CDATA == 'strip') { // Strip CDATA $out[1] = strtr($out[1], array (' '', ']]>' => '')); } // If code page is set convert character encoding to required if ($this->cp != '') //$out[1] = $this->MyConvertEncoding($this->rsscp, $this->cp, $out[1]); $out[1] = iconv($this->rsscp, $this->cp.'//TRANSLIT', $out[1]); // Return result return trim($out[1]); } else { // if there is NO result, return empty string return ''; } } // ------------------------------------------------------------------- // Replace HTML entities &something; by real characters // ------------------------------------------------------------------- function unhtmlentities($string) { // Get HTML entities table $trans_tbl = get_html_translation_table(HTML_ENTITIES, ENT_QUOTES); // Flip keys<==>values $trans_tbl = array_flip($trans_tbl); // Add support for ' entity (missing in HTML_ENTITIES) $trans_tbl += array (''' => "'"); // Replace entities by values return strtr($string, $trans_tbl); } // ------------------------------------------------------------------- // Parse() is private method used by Get() to load and parse RSS file. // Don't use Parse() in your scripts - use Get($rss_file) instead. // ------------------------------------------------------------------- function Parse($rss_url) { // Open and load RSS file $urlParts = parse_url($rss_url); $host = $urlParts['host']; $uri = $urlParts['path']; if (strcmp($urlParts['query'], '') != 0) { $uri .= '?'.$urlParts['query']; } if (strcmp($urlParts['fragment'], '') != 0) { $fragment = $urlParts['fragment']; $fragment = substr($fragment, 4, strlen($fragment) - 3); $uri = $uri.$fragment; } if ($f = fsockopen($host, 80, $errno, $errstr, $this->connection_time)) { $rss_content = ''; fputs($f, "GET $uri HTTP/1.0\r\nHost: $host\r\n\r\n"); while (!feof($f)) { $rss_content .= fgets($f, 512); } fclose($f); // Parse document encoding $result['encoding'] = $this->my_preg_match("'encoding=[\'\"](.*?)[\'\"]'si", $rss_content); // if document codepage is specified, use it if ($result['encoding'] != '') { $this->rsscp = $result['encoding']; } // This is used in my_preg_match() // otherwise use the default codepage else { $this->rsscp = $this->default_cp; } // This is used in my_preg_match() // Parse CHANNEL info preg_match("'(.*?)'si", $rss_content, $out_channel); foreach($this->channeltags as $channeltag) { $temp = $this->my_preg_match("'<$channeltag.*?>(.*?)'si", $out_channel[1]); if ($temp != '') $result[$channeltag] = $temp; // Set only if not empty } // If date_format is specified and lastBuildDate is valid if ($this->date_format != '' && ($timestamp = strtotime($result['lastBuildDate'])) !== -1) { // convert lastBuildDate to specified date format $result['lastBuildDate'] = date($this->date_format, $timestamp); } // Parse TEXTINPUT info preg_match("']*[^/])>(.*?)'si", $rss_content, $out_textinfo); // This a little strange regexp means: // Look for tag with or without any attributes, but skip truncated version (it's not beggining tag) if (isset ($out_textinfo[2])) { foreach ($this->textinputtags as $textinputtag) { $temp = $this->my_preg_match("'<$textinputtag.*?>(.*?)'si", $out_textinfo[2]); if ($temp != '') $result['textinput_'.$textinputtag] = $temp; // Set only if not empty } } // Parse IMAGE info preg_match("']*>(.*?)'si", $rss_content, $out_imageinfo); if (isset ($out_imageinfo[1])) { foreach ($this->imagetags as $imagetag) { $temp = $this->my_preg_match("'<$imagetag.*?>(.*?)'si", $out_imageinfo[1]); if ($temp != '') $result['image_'.$imagetag] = $temp; // Set only if not empty } } // Parse ITEMS preg_match_all("'(.*?)'si", $rss_content, $items); $rss_items = $items[2]; $i = 0; $result['items'] = array (); // create array even if there are no items foreach ($rss_items as $rss_item) { // If number of items is lower then limit: Parse one item if ($i < $this->items_limit || $this->items_limit == 0) { foreach ($this->itemtags as $itemtag) { $temp = $this->my_preg_match("'<$itemtag.*?>(.*?)'si", $rss_item); if ($temp != '') $result['items'][$i][$itemtag] = $temp; // Set only if not empty } // Strip HTML tags and other bullshit from DESCRIPTION if ($this->stripHTML && $result['items'][$i]['description']) $result['items'][$i]['description'] = strip_tags($this->unhtmlentities(strip_tags($result['items'][$i]['description']))); // Strip HTML tags and other bullshit from TITLE if ($this->stripHTML && $result['items'][$i]['title']) $result['items'][$i]['title'] = strip_tags($this->unhtmlentities(strip_tags($result['items'][$i]['title']))); // If date_format is specified and pubDate is valid if ($this->date_format != '' && ($timestamp = strtotime($result['items'][$i]['pubDate'])) !== -1) { // convert pubDate to specified date format $result['items'][$i]['pubDate'] = date($this->date_format, $timestamp); } // Item counter $i ++; } } $result['items_count'] = $i; return $result; } else { return False; //die("Network error: $errstr ($errno)"); } } } ?> blog:ludens » products

everything in products


Just launched: Repper Gallery

~ studio:ludens @ 22:45 Europe/Amsterdam

We’ve been planning this for a while, but it is finally there: the Repper Gallery! With the gallery, you can explore all the patterns that you and other people have made with the Repper pattern making tool. All patterns in the gallery are released under the Creative Commons license for non-commercial use.

Repper Gallery

We have provided you with some options to find patterns in every shape, color or style you can think of. You can search on:

  • Tags: find patterns with a certain subject or style. And if you find a nice pattern, please help all other people and yourself search for them by adding tags yourself. (we’ve just launched it, so not very many patterns have been tagged yet. We need your help!)
  • Color: we’re really excited about this one! It’s still in beta-stage, but you can search for patterns in a certain color. Click the color box next to the search field to select the color you want and get inspired by the amazing variety of patterns out there.
  • Size: different sizes of patterns can be used for different things. Small patterns often look really good as a stylish Twitter (video), MySpace or desktop background. Big patterns are good for situations where you need a lot of detail: use it in your personal art project or send a postcard with the pattern on it to your friends! (thanks to our partner!)

As always, we’d very much like to know what you think of this new option. Repper is a community-driven project and we’d like to hear what you want to do with it. We’ve already got some new features planned…

More on this soon!

Go to the Gallery

Your own patterns with Repper


Super easy pattern making with ‘Repper’

~ studio:ludens @ 16:20 Europe/Amsterdam


What started as a weekend project has developed into a working product for you to get your hands on, for free! We are proud to present to you: Repper, the pattern creator. This nifty app turns any image into a pattern you can use in your favourite image program, your social networking profile background or your website. I posted a video for you on youtube and vimeo so you can check out how it works.

Repper Youtube

Youtube Video

repper vimeo

Vimeo video

Give it a go! And tell us what you think! If you have comments, suggestions for improvement, requests for new features or praise, you are more than welcome to send it to us. We need your input to improve this tool, and that’s what we want to do.

Stay tuned for updates and new features to Repper over the coming weeks.

And, of course, happy pattern making!


Dutch Design Week 2008 a big success!

~ studio:ludens @ 15:39 Europe/Amsterdam

With over a thousand visitors from all over the world our humble presentation stand was hitting it big time. This year we were to be found in the Klokgebouw building on Strijp S. Together with over a hundred other independent design studio’s we presented our new exciting ideas to the world.

For us, this was the opportunity to let everybody meet and play with our new design tools. What made it even more exciting is that people could see their own design being made in front of their eyes! The kind people at Trotec lend us a laser cutter to complete our production process and fulfill our goal: show people they can be creative. And creative they were! Over 150 designs were made by the visitors, and our stand grew in coolness with every design we put up there. Check it out:

Apart from letting people create their own coaster designs we showcased another product: ‘Create your own carpet’.  We presented two carpet designs made from the best carpets in the Netherlands. It worked out quite wonderful and we are now discussing with a carpet producer about bringing it to the market. More on this soon!


Dutch Design Week 2008

~ studio:ludens @ 0:39 Europe/Amsterdam

Dutch Design WeekOnce again, we are present and showing our products on the Dutch Design Week 2008 in Eindhoven. This time, we have something new to show you. If you want to check out what we’ve been working on the past months, you should definitely check us out! you can find us at the Klokgebouw building on Strijp S.

Official Dutch Design Week website

Our flyer front


Klokgebouw   Strijp-S
Beukenlaan 10151
5616 VJ Eindhoven
Za/18 okt    12:00 - 19:00
Zo/19 okt t/m Wo/22 okt   12:00 - 18:00
Do/25okt t/m Za/25 oct   12:00 - 21:00
Zo/26 okt    12:00 - 18:00

Design your own…

Who wouldn’t want to own a unique lamp, carpet or
coaster, designed by oneself?
With the digital design tools from studio:ludens everyone
can playfully design their own product. The easy controls
provide you with full creative freedom to make something
that tightly fits your personal taste.
…and take your own design-coaster home for free!

Come around and design your own Escher-inspired
coaster. With a laser cutter we’ll produce your design on
the spot. Impress everyone at home with your design


epa:kato, our new product

~ studio:ludens @ 17:44 Europe/Amsterdam

epa:kato online design tool

After a couple of weeks of testing, tweaking and tuning, we are ready to present to you epa:kato, ‘design your own coaster’. With this on-line design tool (based on Flash), you can play with shape, patterns and repetition to create a unique design. Read more on the product page

Example coasters - with pouch

The pattern system

To help you design a shape that always fits together (really, all shapes always fit together!) we use the system of regular tilings in our application. So, when you create a piece of the shape, it will be repeated in different ways to create the eventual design.


epa:kato is a new type of mass customization application. When we design something, we like the open-endedness of the process. We have as much freedom as the materials and production process can give us. We try to translate this feeling of freedom and control to an intuitive interface in our design tools. You shouldn’t be forced to select options from a list, but have as much of the possibilities the production process provides as possible. That’s why we are experimenting with a free form spline tool.

Application screenshot

Your feedback

We realise our design tool is far from perfect. We would like to see this as an experiment where we include you in the design process. After all, it’s you we’re designing the design tools for :).

We would love to hear your responses to our application. So, if you have comments, critique, questions, suggestions for improvement or praise, please let us know by posting a comment to this blog post.


Coaster 2.0 update

~ studio:ludens @ 15:29 Europe/Amsterdam

coaster 2.0

Now with text!

Well, we updated our coaster:2.0 design application with a number of new things. First of all, we implemented a way to add your own text to the coaster. It’s working now with four different fonts.

Coaster 2.0 now with text

Six pattern types

More patternsSecondly, you have now the ability to experiment with six different pattern types. We got a little bored with the same square rotational pattern, so we made it into a little pattern family. Each pattern has it’s own style, peculiarities and possibilities. Additionally, the hexagonal shapes will give you some more safety margin in creating a sturdy coaster.

And remember: we want designing, experimenting and learning to be free! Our ordering and production system is nearing completion, so soon you will be able to transform your design into a real tangible product. Happy designing!


coaster:2.0 - a creative design tool

~ studio:ludens @ 15:26 Europe/Amsterdam

coaster 2.0

a new sound in mass-customization

Mass-customization has giving you more control over the appearance of the products you buy. You can change the colors of your shoes (Puma) and turn a photo of your pet into everything from a mug to a teddybear ( We however missed the element of creativity in this process. Therefore, studio:ludens says “genere ludens!” (or “create through play!” for all us non-Romans).

a new design-tool for everyone

We hereby launch our very first online creative design tool: coaster:2.0. This tool gives you a major say in the design process of your own coasters. In a nutshell, this application offers you:

  • a fun and easy-to-use design interface
  • cool patterns in no-time
  • infinite design possibilities
  • an option to order your designs online (coming soon)

At the moment you can already design, log in and save designs you make. Very soon the order system will be up and running, allowing you to order your favorite design(s)!


Click the screenshot to start designing or read on for some examples of what you can create with this tool.