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/*!
* Signature Pad v2.3.2
* https://github.com/szimek/signature_pad
*
* Copyright 2017 Szymon Nowak
* Released under the MIT license
*
* The main idea and some parts of the code (e.g. drawing variable width Bézier curve) are taken from:
* http://corner.squareup.com/2012/07/smoother-signatures.html
*
* Implementation of interpolation using cubic Bézier curves is taken from:
* http://benknowscode.wordpress.com/2012/09/14/path-interpolation-using-cubic-bezier-and-control-point-estimation-in-javascript
*
* Algorithm for approximated length of a Bézier curve is taken from:
* http://www.lemoda.net/maths/bezier-length/index.html
*
*/
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