HistoryGraph – Introduction

At IPO48 2011 in Prague I introduced my idea of HistoryGraph – web based educational app displaying historical events sorted by topic in interactive timelines.  The idea did not get enough people to start up at IPO48, in fact there was only me in the team and the minimum was 3 people 🙂 I have since then revised the idea, simplified it and came to terms with the fact that it will not make me rich.  The simplified version will only read data from tables on a web site and render a visualisation graph. In this approach it will be …

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Fun with Dojo animation

Best way to learn is by doing. About a year ago when I needed to learn Dojo I created this simple animation. It is also my tribute to Avatar movie.  Click the image to see it in action. It looks really cool on full screen [press F11] 🙂 How it works When page loads dojo.addOnLoad() fires callback function. First it calculates dimension of the <img> used as background. In this case Avatar wallpaper.  Then it creates overlay <div> with same dimension as background image and insert grid of tiles. Number of tiles is calculated dependending on their width and height …

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