// Written as an example of HTML5 and Canvas 2010 by Brett Donovan. /* Licensed under the MIT license: http://www.opensource.org/licenses/mit-license.php */ var canvas, ctx; var mass = 10.0; var g = 100.0; var gradient; var xbox = ybox = 50; var s; // stores displacement var time_initial_sec; function init() { tool = new shift_gradient(); canvas [...]
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