Al MacDonald recently posted https://bocoup.com/weblog/javascript-typed-arrays – which is an interesting look at the benchmarkable speed differences between FireFox 4’s Float32Array constructor and the traditional Array constructor. As expected, the Typed Arrays are definitively faster due entirely to native optimization: they only allow integer or floating point numbers (respectively to their Int or Float prefix); additionally […]

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Today I came across that annoying situation where you build something that throws an error, but the build process spits out so much text to your terminal, that the error is lost. The terminal can only hold so-much text in memory. So what to do? Record the terminal output to a text file: ls> output.txt […]

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You probably know by now that JavaScript is getting a lot of upgrades at the moment. One of the upgrades that WebGL is bringing along for the ride is JavaScript Typed Arrays. A JavaScript Typed Array is very quick! It exists as a fixed block of memory that can be accessed with JavaScript, where as […]

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Popcorn.js, which I wrote about recently, is an infant javascript library that allows film makers to better showcase their videos on the web using html5’s video element. Using popcorn, directors can incorporating social media and integrate several features such as subtitles and credits that may be beneficial in the context of the web. Although typically, […]

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Contents What a Difference a Day MakesTesting Processing.jsWhat Works & What SucksFeature TestsComparing SpeedBugs Submitted & Re-OpenedConclusion What a Difference a Day Makes If you have not yet heard the big news, Internet Explorer 9 is shipping with Canvas support! Also with the Video and Audio tags, WOFF Fonts and tons other other HTML5 goodness. […]

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.NET Magazine: Mom will be proud! I was asked back at the start of the year by .NET Magazine (Practical Web Design in the US) to write a JavaScript article on the subject of my choice. I doubt you read the article because I went to the stores and bought all the copies. (Had to […]

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Use the code below to try out everything that I talk about in this post, and check out the live demo over on code.bocoup.com. modified-x-axis-intervals-and-labels.js //based on the source of http://g.raphaeljs.com/linechart.html var options = { axis: "0 0 1 1", // Where to put the labels (trbl) axisxstep: 16 // How many x interval labels […]

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In my excitement and haste upon discovering new SharedWorker() support in the Opera 10.60 Beta, I neglected to snoop around the window object of my two favorites, Chrome 5+ and FireFox 3.6+ … WHOOPS! If I had done so, I would’ve discovered, as I did just now, that Chrome 5+ ALSO supports new SharedWorker(). Of […]

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One of the things I have been working on over the last couple of days, is a convenient set of functions to manipulate a Processing.js Canvas for use in the CubicVR WebGL Engine. You may already know that a OpenGL performs best with textures with 2^n (power of 2) dimensions. To minimize CPU load, We […]

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One of the questions that came up in the Processing track was: “Can you pass the image data from a Canvas to a Web-Worker for processing?” My assumption was “yes” as the specs declare you can paste any complex object to and from workers so long as you’re not trying to pass a DOM element. […]

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