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Prototype.js Polar Clock
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05/15/2009 by Agrath
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I've recently discovered a type of clock, called a polar clock. It has arcs which extend from 0 degrees to 360 degrees as that interval (eg: hour, min, sec) extend. The arcs roll back once they reach the end of the interval. A windows and MacOSX implementation in Flash compiled into a screensaver can be found at PixelBreaker As i've never used Canvas before now, i'm going to be showing you how to use Canvas with Prototype 1.6 and throw in some more advanced techniques.
Internet Explorer doesn't support the Canvas tag, but all the other major browsers do. To get around this problem, we'll be using exCanvas to provide support via it's native VML (similar to SVG) drawing markup.
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