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lucprincen/save-canvas-thumb.js

Last active December 21, 2020 03:10
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Save a copy of the canvas as a thumnail. Requires EaselJS and returns a base64 string.
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save-canvas-thumb.js
function saveCanvasThumbnail( scale ){
if( scale === undefined ) scale = .3;
var canvas = getElementById( 'canvas' );
var bitmap = new createjs.Bitmap( canvas );
bitmap.cache( 0, 0, canvas.width, canvas.height, scale );
var base64 = bitmap.getCacheDataURL();
return base64;
}
var thumbnail_data = saveCanvasThumbnail( .5 );
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