Geogebra 3.2 beta: Now with animation
The next version of Geogebra is nearing release, with quite an impressive list of changes and additions. One of the key additions, for me, is the integration of animation into Geogebra itself. It takes the approach of animating sliders: you can specify the increment, the speed, and what to do when you hit a boundary (bounce, or repeat).
At first I didn’t think there was any way of getting the animation to start automatically, but it looks like all you need to do is to save the worksheet with the animation running. It will then still be running when you reload it. This means we no longer need Javascript to kludge together animated Geogebra files on webpages.
Here, for example, are some animated rotating squares, which originally appeared in non-animated form last year:
You need to enable Java to see this Geogebra applet.(Source: rotating_tesselation_2.ggb)
The only change I had to made was to alter the animation properties, right click on the slider, and select ‘Animation On’. To put it on the webpage I basically copy-and-pasted the ‘applet’ tag from the ‘Dynamic Webpage’ export option. No extra Javascript is needed.
The pre-release isn’t quite ready for prime time yet (when I tested it, it had a habit of losing its containing window, for example), but I look forward to spending some time exploring the other features, like the spreadsheet view. There also seem to be a whole host of statistics-related features (such as the drawing of histograms and box-and-whisker plots).
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Tags: animation, geogebra, linkages, visualisation